MC MC MC SC41343 SC41344

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1 SEMICONDUCTOR TECHNICAL DATA Order this document by MC5026/D CMOS These devices are designed to be used as encoder/decoder pairs in remote control applications. The MC5026 encodes nine lines of information and serially sends this information upon receipt of a transmit enable (TE) signal. The nine lines may be encoded with trinary data (low, high, or open) or binary data (low or high). The words are transmitted twice per encoding sequence to increase security. The MC5027 decoder receives the serial stream and interprets five of the trinary digits as an address code. Thus, 23 addresses are possible. If binary data is used at the encoder, 32 addresses are possible. The remaining serial information is interpreted as four bits of binary data. The valid transmission (VT) output goes high on the MC5027 when two conditions are met. First, two addresses must be consecutively received (in one encoding sequence) which both match the local address. Second, the bits of data must match the last valid data received. The active VT indicates that the information at the Data output pins has been updated. The MC5028 decoder treats all nine trinary digits as an address which allows 9,683 codes. If binary data is encoded, 52 codes are possible. The VT output goes high on the MC5028 when two addresses are consecutively received (in one encoding sequence) which both match the local address. Operating Temperature Range: 0 to + 85 C Very Low Standby Current for the Encoder: 300 na 25 C Interfaces with RF, Ultrasonic, or Infrared Modulators and Demodulators RC Oscillator, No Crystal Required High External Component Tolerance; Can Use ± 5% Components Internal Power On Reset Forces All Decoder Outputs Low Operating Voltage Range: MC5026 = 2.5 to 8 V* MC5027, MC5028 =.5 to 8 V Low Voltage Versions Available: SC33 = 2.8 to V Version of the MC5027 SC3 = 2.8 to V Version of the MC5028 For Infrared Applications, See Application Note AN6/D P SUFFIX PLASTIC DIP CASE 68 D SUFFIX SOG PACKAGE CASE 75B DW SUFFIX SOG PACKAGE CASE 75G ORDERING INFORMATION MC5026P Plastic DIP MC5026D SOG Package MC5027P, SC33P Plastic DIP MC5027DW, SC33DW SOG Package MC5028P, SC3P Plastic DIP MC5028DW, SC3DW SOG Package PIN ASSIGNMENTS MC5026 ENCODER MC5027/SC33 DECODERS MC5028/SC3 DECODERS A 6 A 6 A 6 A2 2 Dout A2 2 D6 A2 2 A6 A3 3 TE A3 3 D7 A3 3 A7 A 3 RTC A 3 D8 A 3 A8 A5 5 2 CTC A5 5 2 D9 A5 5 2 A9 A6/D6 6 RS R 6 VT R 6 VT A7/D7 7 A9/D9 C 7 R2/C2 C 7 R2/C2 VSS 8 9 A8/D8 VSS 8 9 Din VSS 8 9 Din * All MC5026 devices manufactured after date code 93 or 3 are guaranteed over this wider voltage range. All previous designs using the low voltage SC32 should convert to the MC5026, which is a drop in replacement. The SC32 part number has been discontinued. REV 2 /98 Motorola, Inc. 998

2 RS RTC CTC TE PIN OSCILLATOR AND ENABLE DIVIDER DATA SELECT AND BUFFER Dout RING COUNTER AND OF 9 DECODER A A2 A3 A A5 A6/D6 A7/D7 A8/D8 A9/D TRINARY DETECTOR = PIN 6 VSS = PIN 8 Figure. MC5026 Encoder Block Diagram VT CONTROL LOGIC SEQUENCER CIRCUIT BIT SHIFT REGISTER LATCH D6 D7 3 D8 2 D A A2 A3 A A DATA EXTRACTOR C 7 6 R C2 R2 9 D in = PIN 6 VSS = PIN 8 Figure 2. MC5027 Decoder Block Diagram 2

3 CONTROL LOGIC VT SEQUENCER CIRCUIT A A2 A3 A A5 A6 A7 A8 A DATA EXTRACTOR C 7 6 R C2 R2 9 BIT SHIFT REGISTER 9 D in = PIN 6 VSS = PIN 8 Figure 3. MC5028 Decoder Block Diagram MAXIMUM RATINGS* (Voltages Referenced to VSS) Rating Symbol Value Unit DC Supply Voltage (except SC33, SC3) 0.5 to + 8 V DC Supply Voltage (SC33, SC3 only) 0.5 to + V Vin DC Input Voltage 0.5 to V Vout DC Output Voltage 0.5 to V Iin DC Input Current, per Pin ± ma Iout DC Output Current, per Pin ± ma PD Power Dissipation, per Package 500 mw Tstg Storage Temperature 65 to + 0 C TL Lead Temperature, mm from Case for Seconds 260 C * Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the limits in the Electrical Characteristics tables or Pin Descriptions section. This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high impedance circuit. For proper operation, Vin and Vout should be constrained to the range VSS (Vin or Vout). 3

4 ELECTRICAL CHARACTERISTICS MC5026*, MC5027, and MC5028 (Voltage Referenced to VSS) Symbol Characteristic VOL Low Level Output Voltage (Vin = or 0) VOH High Level Output Voltage (Vin = 0 or ) VIL VIH IOH IOL Iin Iin Iin Low Level Input Voltage High Level Input Voltage High Level Output Current Low Level Output Current Input Current TE (MC5026, Pull Up Device) (Vout =.5 or 0.5 V) (Vout = 9.0 or.0 V) (Vout = 3.5 or.5 V) (Vout = 0.5 or.5 V) (Vout =.0 or 9.0 V) (Vout =.5 or 3.5 V) (Vout = 2.5 V) (Vout =.6 V) (Vout = 9.5 V) (Vout = 3.5 V) (Vout = 0. V) (Vout = 0.5 V) (Vout =.5 V) Input Current RS (MC5026), Din (MC5027, MC5028) Input Current A A5, A6/D6 A9/D9 (MC5026), A A5 (MC5027), A A9 (MC5028) Guaranteed Limit 0 C 25 C 85 C V Min Max Min Max Min Max Unit ± 0.3 ± 0.3 ±.0 µa ± ± 500 ± 00 Cin Input Capacitance (Vin = 0) 7.5 pf IDD Quiescent Current MC5026 IDD Quiescent Current MC5027, MC5028 Idd Idd Dynamic Supply Current MC5026 (fc = 20 khz) Dynamic Supply Current MC5027, MC5028 (fc = 20 khz) * Also see next Electrical Characteristics table for 2.5 V specifications V V V V ma ma µa µa µa µa µa µa

5 ELECTRICAL CHARACTERISTICS MC5026 (Voltage Referenced to VSS) Guaranteed Limit 0 C 25 C 85 C Symbol Characteristic V Min Max Min Max Min Max Unit VOL Low Level Output Voltage (Vin = 0 V or ) 2.5 V VOH High Level Output Voltage (Vin = 0 V or ) V VIL Low Level Input Voltage (Vout = 0.5 V or 2.0 V) V VIH High Level Input Voltage (Vout = 0.5 V or 2.0 V) V IOH High Level Output Current (Vout =.25 V) ma IOL Low Level Output Current (Vout = 0. V) ma Iin Input Current (TE Pull Up Device) µa Iin Input Current (A A5, A6/D6 A9/D9) 2.5 ± 25 µa IDD Quiescent Current 2.5 µa Idd Dynamic Supply Current (fc = 20 khz) µa ELECTRICAL CHARACTERISTICS SC33 and SC3 (Voltage Referenced to VSS) Symbol Characteristic VOL Low Level Output Voltage (Vin = 0 V or ) 2.8 VOH High Level Output Voltage (Vin = 0 V or ) 2.8 VIL VIH IOH IOL Low Level Input Voltage High Level Input Voltage High Level Output Current Low Level Output Current (Vout = 2.3 V or 0.5 V) (Vout =.5 V or 0.5 V) (Vout = 9.0 V or.0 V) (Vout = 0.5 V or 2.3 V) (Vout = 0.5 V or.5 V) (Vout =.0 V or 9.0 V) (Vout =. V) (Vout =.5 V) (Vout = 9.0 V) (Vout = 0. V) (Vout = 0.5 V) (Vout =.0 V) Guaranteed Limit 0 C 25 C 85 C V Min Max Min Max Min Max Unit Iin Input Current Din ± 0.3 ± 0.3 ±.0 µa Iin Input Current A A5 (SC33) A A9 (SC3) ± 30 ± 0 ± 600 Cin Input Capacitance (Vin = 0) 7.5 pf IDD Quiescent Current 2.8 Idd Dynamic Supply Current (fc = 20 khz) V V V V ma ma µa µa µa 5

6 SWITCHING CHARACTERISTICS MC5026*, MC5027, and MC5028 (CL = 50 pf, TA = 25 C) Symbol Characteristic ttlh, tthl Output Transition Time,8 tr Din Rise Time Decoders 5 tf Din Fall Time Decoders 5 fosc Encoder Clock Frequency 6 f Decoder Frequency Referenced to Encoder Clock 2 tw TE Pulse Width Encoders 7 * Also see next Switching Characteristics table for 2.5 V specifications. Guaranteed Limit Figure No. Min Max Unit ns µs µs MHz khz ns SWITCHING CHARACTERISTICS MC5026 (CL = 50 pf, TA = 25 C) Figure Guaranteed Limit Symbol Characteristic No. Min Max Unit ttlh, tthl Output Transition Time, ns fosc Encoder Clock Frequency khz tw TE Pulse Width µs SWITCHING CHARACTERISTICS SC33 and SC3 (CL = 50 pf, TA = 25 C) Symbol Characteristic ttlh, tthl Output Transition Time, tr Din Rise Time tf Din Fall Time f Decoder Frequency Referenced to Encoder Clock Guaranteed Limit Figure No. Min Max Unit ns µs µs khz 6

7 ANY OUTPUT 90% % ttlh tthl 90% Din % tf tr VSS Figure. Figure 5. /fosc RTC 50% TE 50% VSS tw Figure 6. Figure 7. TEST POINT DEVICE UNDER TEST OUTPUT CL* * Includes all probe and fixture capacitance. Figure 8. Test Circuit 7

8 MC5026 OPERATING CHARACTERISTICS The encoder serially transmits trinary data as defined by the state of the A A5 and A6/D6 A9/D9 input pins. These pins may be in either of three states (low, high, or open) allowing 9,683 possible codes. The transmit sequence is initiated by a low level on the TE input pin. Upon power up, the MC5026 can continuously transmit as long as TE remains low (also, the device can transmit two word sequences by pulsing TE low). However, no MC5026 application should be designed to rely upon the first data word transmitted immediately after power up because this word may be invalid. Between the two data words, no signal is sent for three data periods (see Figure ). Each transmitted trinary digit is encoded into pulses (see Figure ). A logic 0 (low) is encoded as two consecutive short pulses, a logic (high) as two consecutive long pulses, and an open (high impedance) as a long pulse followed by a short pulse. The input state is determined by using a weak output device to try to force each input high then low. If only a high state results from the two tests, the input is assumed to be hardwired to. If only a low state is obtained, the input is assumed to be hardwired to VSS. If both a high and a low can be forced at an input, an open is assumed and is encoded as such. The high and low levels are 70% and 30% of the supply voltage as shown in the Electrical Characteristics table. The weak output device sinks/sources up to µa at a 5 V supply level, 500 µa at V, and ma at V. The TE input has an internal pull up device so that a simple switch may be used to force the input low. While TE is high and the second word transmission has timed out, the encoder is completely disabled, the oscillator is inhibited, and the current drain is reduced to quiescent current. When TE is brought low, the oscillator is started and the transmit sequence begins. The inputs are then sequentially selected, and determinations are made as to the input logic states. This information is serially transmitted via the Dout pin. MC5027 This decoder receives the serial data from the encoder and outputs the data, if it is valid. The transmitted data, consisting of two identical words, is examined bit by bit during reception. The first five trinary digits are assumed to be the address. If the received address matches the local address, the next four (data) bits are internally stored, but are not transferred to the output data latch. As the second encoded word is received, the address must again match. If a match occurs, the new data bits are checked against the previously stored data bits. If the two nibbles of data (four bits each) match, the data is transferred to the output data latch by VT and remains until new data replaces it. At the same time, the VT output pin is brought high and remains high until an error is received or until no input signal is received for four data periods (see Figure ). Although the address information may be encoded in trinary, the data information must be either a or 0. A trinary (open) data line is decoded as a logic. MC5028 This decoder operates in the same manner as the MC5027 except that nine address lines are used and no data output is available. The VT output is used to indicate that a valid address has been received. For transmission security, two identical transmitted words must be consecutively received before a VT output signal is issued. The MC5028 allows 9,683 addresses when trinary levels are used. 52 addresses are possible when binary levels are used. PIN DESCRIPTIONS MC5026 ENCODER A A5, A6/D6 A9/D9 Address, Address/Data Inputs (Pins 7, 9, and ) These address/data inputs are encoded and the data is sent serially from the encoder via the Dout pin. RS, CTC, RTC (Pins, 2, and 3) These pins are part of the oscillator section of the encoder (see Figure 9). If an external signal source is used instead of the internal oscillator, it should be connected to the RS input and the RTC and CTC pins should be left open. TE Transmit Enable (Pin ) This active low transmit enable input initiates transmission when forced low. An internal pull up device keeps this input normally high. The pull up current is specified in the Electrical Characteristics table. Dout Data Out (Pin ) This is the output of the encoder that serially presents the encoded data word. VSS Negative Power Supply (Pin 8) The most negative supply potential. This pin is usually ground. Positive Power Supply (Pin 6) The most positive power supply pin. MC5027 AND MC5028 DECODERS A A5, A A9 Address Inputs (Pins 5) MC5027, Address Inputs (Pins 5,,, 3, 2) MC5028 These are the local address inputs. The states of these pins must match the appropriate encoder inputs for the VT pin to go high. The local address may be encoded with trinary or binary data. D6 D9 Data Outputs (Pins,, 3, 2) MC5027 Only These outputs present the binary information that is on encoder inputs A6/D6 through A9/D9. Only binary data is acknowledged; a trinary open at the MC5026 encoder is decoded as a high level (logic ). Din Data In (Pin 9) This pin is the serial data input to the decoder. The input voltage must be at CMOS logic levels. The signal source driving this pin must be dc coupled. 8

9 R, C Resistor, Capacitor (Pins 6, 7) As shown in Figures 2 and 3, these pins accept a resistor and capacitor that are used to determine whether a narrow pulse or wide pulse has been received. The time constant R x C should be set to.72 encoder clock periods: R C = 3.95 RTC CTC R2/C2 Resistor 2/Capacitor 2 (Pin ) As shown in Figures 2 and 3, this pin accepts a resistor and capacitor that are used to detect both the end of a received word and the end of a transmission. The time constant R2 x C2 should be 33.5 encoder clock periods (four data periods per Figure ): R2 C2 = 77 RTC CTC. This time constant is used to determine whether the Din pin has remained low for four data periods (end of transmission). A separate on chip comparator looks at the voltage equivalent two data periods (0. R2 C2) to detect the dead time between received words within a transmission. VT Valid Transmission Output (Pin ) This valid transmission output goes high after the second word of an encoding sequence when the following conditions are satisfied:. the received addresses of both words match the local decoder address, and 2. the received data bits of both words match. VT remains high until either a mismatch is received or no input signal is received for four data periods. VSS Negative Power Supply (Pin 8) The most negative supply potential. This pin is usually ground. Positive Power Supply (Pin 6) The most positive power supply pin. 9

10 RS CTC RTC 2 3 INTERNAL ENABLE This oscillator operates at a frequency determined by the external RC network; i.e., f (Hz) 2.3 RTC CTC for khz f 00 khz where: CTC = CTC + Clayout + 2 pf RS 2 RTC RS 20 k RTC k 00 pf < CTC < µf The value for RS should be chosen to be 2 times RTC. This range ensures that current through RS is insignificant compared to current through RTC. The upper limit for RS must ensure that RS x 5 pf (input capacitance) is small compared to RTC x CTC. For frequencies outside the indicated range, the formula is less accurate. The minimum recommended oscillation frequency of this circuit is khz. Susceptibility to externally induced noise signals may occur for frequencies below khz and/or when resistors utilized are greater than MΩ. Figure 9. Encoder Oscillator Information ENCODER TE PWmin 2 WORD TRANSMISSION CONTINUOUS TRANSMISSION ENCODER OSCILLATOR (PIN 2) Dout (PIN ) ST DIGIT TH DIGIT ST DIGIT TH DIGIT HIGH OPEN LOW ST WORD 2ND WORD ENCODING SEQUENCE DECODER. (R2C2) VT (PIN ) DATA OUTPUTS Figure. Timing Diagram

11 ENCODER OSCILLATOR (PIN 2) ENCODED ONE Dout (PIN ) ENCODED ZERO ENCODED OPEN DATA PERIOD Figure. Encoder Data Waveforms 500 f max (khz) (REF. TO ENCODER CLOCK) = V = V = 5 V Clayout (pf) ON PINS 5 (MC5027); PINS 5 AND 2 (MC5028) Figure 2. fmax vs Clayout Decoders Only

12 NO HAS THE TRANSMISSION BEGUN? DOES THE 5 BIT ADDRESS MATCH THE ADDRESS PINS? NO DISABLE VT ON THE ST ADDRESS MISMATCH STORE THE BIT DATA DOES THIS DATA MATCH THE PREVIOUSLY STORED DATA? NO DISABLE VT ON THE ST DATA MISMATCH IS THIS AT LEAST THE 2ND CONSECUTIVE MATCH SINCE VT DISABLE? NO LATCH DATA ONTO OUTPUT PINS AND ACTIVATE VT HAVE BIT TIMES PASSED? DISABLE VT NO NO HAS A NEW TRANSMISSION BEGUN? Figure 3. MC5027 Flowchart 2

13 NO HAS THE TRANSMISSION BEGUN? DOES THE ADDRESS MATCH THE ADDRESS PINS? NO DISABLE VT ON THE ST ADDRESS MISMATCH AND IGNORE THE REST OF THIS WORD IS THIS AT LEAST THE 2ND CONSECUTIVE MATCH SINCE VT DISABLE? NO ACTIVATE VT HAVE BIT TIMES PASSED? DISABLE VT NO NO HAS A NEW TRANSMISSION BEGUN? Figure. MC5028 Flowchart 3

14 MC5027 AND MC5028 TIMING To verify the MC5027 or MC5028 timing, check the waveforms on C (Pin 7) and R2/C2 (Pin ) as compared to the incoming data waveform on Din (Pin 9). The R C decay seen on C discharges down to /3 before being reset to. This point of reset (labelled DOS in Figure ) is the point in time where the decision is made whether the data seen on Din is a or 0. DOS should not be too close to the Din data edges or intermittent operation may occur. The other timing to be checked on the MC5027 and MC5028 is on R2/C2 (see Figure 6). The R C decay is continually reset to as data is being transmitted. Only between words and after the end of transmission (EOT) does R2/C2 decay significantly from. R2/C2 can be used to identify the internal end of word (EOW) timing edge which is generated when R2/C2 decays to 2/3. The internal EOT timing edge occurs when R2/C2 decays to /3. When the waveform is being observed, the R C decay should go down between the 2/3 and /3 levels, but not too close to either level before data transmission on Din resumes. Verification of the timing described above should ensure a good match between the MC5026 transmitter and the MC5027 and MC5028 receivers. Din C R2/C2 0 V 2/3 /3 0 V 2/3 /3 0 V DOS DOS Figure. R C Decay on Pin 7 (C) EOW Figure 6. R C Decay on Pin (R2/C2) EOT

15 5 TRINARY ADDRESSES BIT BINARY DATA A A2 A3 A A5 D6 D7 D8 D TE 6 MC µf Dout 3 RTC 2 CTC RS R2 0. µf Din 9 6 R 7 C C2 6 MC5027 OR SC D6 D7 D8 D9 VT A A2 A3 A A5 5 TRINARY ADDRESSES fosc = 2.3 RTCCTC RC = 3.95 RTCCTC R2C2 = 77 RTCCTC CTC = CTC + Clayout + 2 pf 0 pf CTC µf RTC kω; RS 2 RTC R kω C 00 pf R2 0 kω C2 700 pf REPEAT OF ABOVE REPEAT OF ABOVE Example R/C Values (All Resistors and Capacitors are ± 5%) (CTC = CTC + 20 pf) fosc (khz) RTC CTC RS R C R2 C k k k k k k 50 k 20 pf 20 pf 90 pf 20 pf 2020 pf 50 pf 50 pf 20 k 20 k 20 k 20 k 20 k 20 k 0 k k k k k k k 50 k 70 pf 9 pf 2000 pf 3900 pf 8200 pf 0.02 µf 0.02 µf 0 k 0 k 0 k 0 k 0 k 200 k 200 k 9 pf 800 pf 3900 pf 7500 pf 0.0 µf 0.02 µf 0. µf Figure 7. Typical Application

16 APPLICATIONS INFORMATION INFRARED TRANSMITTER In Figure 8, the MC5026 encoder is set to run at an oscillator frequency of about to 9 khz. Thus, the time required for a complete two word encoding sequence is about 20 to 0 ms. The data output from the encoder gates an RC oscillator running at 50 khz; the oscillator shown starts rapidly enough to be used in this application. When the send button is not depressed, both the MC5026 and oscillator are in a low power standby state. The RC oscillator has to be trimmed for 50 khz and has some drawbacks for frequency stability. A superior system uses a ceramic resonator oscillator running at 00 khz. This oscillator feeds a divider as shown in Figure 9. The unused inputs of the MC0UB must be grounded. The MLED8 IRED is driven with the 50 khz square wave at about 200 to 300 ma to generate the carrier. If desired, two IREDs wired in series can be used (see Application Note AN6 for more information). The bipolar IRED switch, shown in Figure 8, offers two advantages over a FET. First, a logic FET has too much gate capacitance for the MC0UB to drive without waveform distortion. Second, the bipolar drive permits lower supply voltages, which are an advantage in portable battery powered applications. The configuration shown in Figure 8 operates over a supply range of.5 to 8 V. A low voltage system which operates down to 2.5 V could be realized if the oscillator section of a MC7HC060 is used in place of the MC0UB. The data output of the MC5026 is inverted and fed to the RESET pin of the MC7HC060. Alternately, the MC7HCU0 could be used for the oscillator. Information on the MC0UB is in book number DL3/D. The MC7HCU0 and MC7HC060 are found in book number DL29/D. INFRARED RECEIVER The receiver in Figure 20 couples an IR sensitive diode to input preamp A, followed by band pass amplifier A2 with a gain of about. Limiting stage A3 follows, with an output of about 800 mv p p. The limited 50 khz burst is detected by comparator A that passes only positive pulses, and peak detected and filtered by a diode/rc network to extract the data envelope from the burst. Comparator A5 boosts the signal to logic levels compatible with the MC5027/28 data input. The Din pin of these decoders is a standard CMOS high impedance input which must not be allowed to float. Therefore, direct coupling from A5 to the decoder input is utilized. Shielding should be used on at least A and A2, with good ground and high sensitivity circuit layout techniques applied. For operation with supplies higher than + 5 V, limiter A s positive output swing needs to be limited to 3 to 5 V. This is accomplished via adding a zener diode in the negative feedback path, thus avoiding excessive system noise. The biasing resistor stack should be adjusted such that V3 is.25 to.5 V. This system works up to a range of about meters. The gains of the system may be adjusted to suit the individual design needs. The 0 Ω resistor in the emitter of the first 2N5088 and the kω resistor feeding A2 may be altered if different gain is required. In general, more gain does not necessarily result in increased range. This is due to noise floor limitations. The designer should increase transmitter power and/or increase receiver aperature with Fresnal lensing to greatly improve range. See Application Note AN6 for additional information. Information on the MC307 is in data book DL28/D. TRINARY SWITCH MANUFACTURERS Midland Ross Electronic Connector Div. Greyhill Augat/Alcoswitch Aries Electronics The above companies may not have the switches in a DIP. For more information, call them or consult eem Electronic Engineers Master Catalog or the Gold Book. Ask for SPDT with center OFF. Alternative: An SPST can be placed in series between a SPDT and the Encoder or Decoder to achieve trinary action. Motorola cannot recommend one supplier over another and in no way suggests that this is a complete listing of trinary switch manufacturers. 6

17 V+ SELECT FOR 200 ma TO 300 ma MLED8 USE OF 2 MLED8s IS OPTIONAL SEND MC0UB kω MPSA3 OR MPSW3 TE Dout MC0UB MC RS CTC RTC 00 pf 220 kω 0.0 µf SWITCHES 220 kω 0 kω FOR APPROX. khz 7 kω FOR APPROX. 9 khz ADJUST/SELECT FOR f = 50 khz (APPROX. 0 kω) Figure 8. IRED Transmitter Using RC Oscillator to Generate Carrier Frequency V+ MΩ X MC0UB X = 00 khz CERAMIC RESONATOR PANASONIC EFD A00K0B OR EQUIVALENT CLK MC02 RESET Q3 V+ MC0UB 50 khz TO DRIVER TRANSISTOR 70 pf 70 pf Dout FROM MC5026 Figure 9. Using a Ceramic Resonator to Generate Carrier Frequency 7

18 +5 V µf 22 kω kω kω 2N5088 A 2N5086 2N5088 µf mh TOKO TYPE 7PA OR PA OR EQUIVALENT 0.0 µf OPTICAL FILTER ÉÉ kω 0 Ω 6.8 kω 2.2 kω µf 0.0 µf kω V + A2 / MC307 N9.7 kω 0.0 µf N9 0 kω MΩ MΩ V A3 + / MC307 kω V2 + A / MC307 N9 kω 00 pf 7 kω 22 kω V3 + A5 / MC pf 390 kω FOR APPROX. khz 80 kω FOR APPROX. 9 khz 750 kω FOR APPROX. khz 0.0 µf 360 kω FOR APPROX. 9 khz +5 V.7 kω Din C R R2/C2 MC5027/28 VT 390 Ω V2 2.7 V V 2.5 V +5 V VSS 9 FOR MC FOR MC5028 DATA OUT MC5027 ONLY µf µf µf 2.2 kω 2.7 kω V3.3 V ADDRESS SWITCHES Figure 20. Infrared Receiver 8

19 PACKAGE DIMENSIONS P SUFFIX PLASTIC DIP (DUAL IN LINE PACKAGE) CASE H A 8 G F 9 D 6 PL B S C K 0.25 (0.0) M T SEATING T PLANE A M J L M NOTES:. DIMENSIONING AND TOLERANCING PER ANSI Y.5M, CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL.. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. INCHES MILLIMETERS DIM MIN MAX MIN MAX A B C D F G 0.0 BSC 2.5 BSC H 0 BSC.27 BSC J K L M 0 0 S D SUFFIX SOG (SMALL OUTLINE GULL WING) PACKAGE CASE 75B 05 T SEATING PLANE G A K B D 6 PL 0.25 (0.0) M T B S A S P 8 PL 0.25 (0.0) M B S C M R X 5 J F NOTES:. DIMENSIONING AND TOLERANCING PER ANSI Y.5M, CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION.. MAXIMUM MOLD PROTRUSION 0. (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.27 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS INCHES DIM MIN MAX MIN MAX A B C D F G.27 BSC 0 BSC J K M P R

20 DW SUFFIX SOG (SMALL OUTLINE GULL WING) PACKAGE CASE 75G 02 A 6 9 6X D X G B 0.0 (0.25) M T A S B S 8 K C 8X P T SEATING PLANE 0.0 (0.25) M J F M B M R X 5 NOTES:. DIMENSIONING AND TOLERANCING PER ANSI Y.5M, CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION.. MAXIMUM MOLD PROTRUSION 0. (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.3 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS INCHES DIM MIN MAX MIN MAX A B C D F G.27 BSC 0 BSC J K M P R Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.; SPD, Strategic Planning Office; -32-, P.O. Box 505, Denver, Colorado, or Nishi-Gotanda; Shinagawa-ku, Tokyo, Japan Mfax : RMFAX0@ .sps.mot.com TOUCHTONE ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, Motorola Fax Back System US & Canada ONLY Ting Kok Road, Tai Po, N.T., Hong Kong /mfax / HOME PAGE : / CUSTOMER FOCUS CENTER: MC5026/D