DATA SHEET MOS INTEGRATED CIRCUIT Bipolar Analog Integrated Circuit µpc TIMER CIRCUIT The µpc is a powerful integrated circuit. Adding a few external parts to it can turn it into various types of timing signal generators, such as monostable and astable multivibrators. It has trigger, threshold, and control pins. Inputting a signal to the reset pin can stop the circuit operation easily. In addition, the output can sink current as high as 00 ma (maximum). So, it can be used to drive relays and lamps. TYPICAL CHARACTERISTICS FEATURES Supply voltage : 4. to V Monostable and astable oscillation Circuit current (VCC = V) : ma Interfacing directly with TTL-level signals Output current capacity : 00 ma Variable duty cycle Temperature stability : 0.00%/ C Rising and falling time : 0 ns ORDERING INFORMATION PIN CONFIGURATION (TOP VIEW) Part number Package µpcc 8-pin plastic DIP (00 mil) GND 8 VCC µpcg 8-pin plastic SOP ( mil) Trigger COMP R 7 Discharge Flip-flop R Output Output stage R COMP Threshold Reset 4 Control voltage VREF EQUIVALENT CIRCUIT 8 VCC Q Threshold (VCC) Control GND Trigger 4 Reset 7 Discharge Q4 Q Q Q Q Q Q4 R kω Q7 Q8 Q Q R kω Q9 Q Q R kω R4 kω Q R kω Q Q Q7 Q8 Q9 Q R 7.kΩ R7 4.7 kω R. kω Q0 R8 0 Ω Q Q7 R.9 kω Q4 R 0 R9.kΩ Q8 Q Output Document No. G49EJV0DS00 (th edition) (Previous No. IC-979) Date Published November 99 P Printed in Japan 98
ABSOLUTE MAXIMUM RATINGS (TA = C) Parameter Symbol µpcc Rated value µpcg Unit Supply voltage VCC 0. to +8 0. to +8 V Input voltage VIN 0. to VCC + 0. 0. to VCC + 0. V (trigger, threshold, reset, control) Applicable output voltage Note 4 VO 0. to VCC + 0. 0. to VCC + 0. V (output and discharge) Output current IO 00Note 00Note ma Power dissipation PT 00Note 440Note mw Operating temperature TA 0 to +80 0 to +80 C Storage temperature Tstg to + to + C Notes. Be sure to use the product within the Power dissipation.. For TA C, the total loss is derated at TJ MAX = C and mw/ C. (See the PT-TA characteristic curve.). For TA C, the total loss is derated at TJ MAX = C and 4.4 mw/ C. (See the PT-TA characteristic curve.) 4. This is an external voltage that can be applied to the output pin without deteriorating the quality of the product or causing damage to the product. Be sure to use the product within the rated value under any conditions where coils are inserted or power is turned on or off. The output voltage that can be obtained during normal operation is within the output saturation voltage range. RECOMMENDED OPERATING CONDITIONS (TA = C) Parameter Symbol Conditions MIN. MAX. Unit Supply voltage VCC 4. V Oscillation frequency f VCC = to V 0. 0 k Hz Output pulse width tw (OUT) VCC = to V µ Sec Input voltage (trigger, threshold) VIN 0 VCC V Input voltagenote (control) VIN.0 VCC. V Reset voltage (high level) Vreset H VCC = to V.0 VCC V Reset voltage (low level) Vreset L VCC = to V 0 0.4 V Note. This parameter defines the voltage that can be applied when a PWM mode application circuit is configured by applying an external voltage to the control pin. Usually, a capacitance of 0.0 µf is connected as shown in the application circuit.
ELECTRICAL CHARACTERISTICS (TA = C, VCC = to V) Parameter Symbol Conditions MIN. TYP. MAX. Unit Supply voltage VCC 4. V Supply current ICC VCC = V, RL =, VO = L Note 0 ma VCC = V, RL =, VO = L Note 0 ma Threshold voltage Vth / VCC V Threshold current Ith Note 7 0 0. 0. µa Trigger voltage Vtr VCC = V V VCC = V.7 V Trigger current Itr 0. µa Reset voltage Vreset Note 8 0.4 0.7.0 V Reset current Ireset 0. ma Control voltage Vcont VCC = V 9.0 V VCC = V.. 4 V Output saturation voltage L VOL VCC = V, ISINK = ma 0 0. 0. V VCC = V, ISINK = 0 ma 0 0.4 0.7 V VCC = V, ISINK = 0 ma 0.0. V VCC = V, ISINK = 00 ma. V VCC = V, ISINK = ma 0 0. 0. V Output saturation voltage H VOH VCC = V, ISOURCE = 00 ma. V VCC = V, ISOURCE = 0 ma.7..0 V VCC = V, ISOURCE = 0 ma.7..0 V Propagation delay (L H) tplh 00 ns Propagation delay (H L) tphl 00 ns Minimum trigger pulse width tw (tr) VCC = V, Vtr min. =. V ns Minimum output pulse width tw (OUT) VCC = V, Vtr min. =. V tw (tr) = µs µs Minimum reset pulse width tw (reset) VCC = V, Vtr min. = 0 V 900 ns Timing error Astable multivibrator Initial accuracy RA, RB = to 0 kω % Temperature drift C = 0. µf 0 ppm/ C Supply voltage drift 0.0 %/V Notes. When the output is H, the circuit current decreases by approximately ma (when VCC = V). 7. The maximum allowable value for RA + RB is determined for a supply voltage of V. The maximum value is 0 MΩ. 8. When the reset pin is driven to a low level, discharge TrQ4 is turned on, stopping oscillation (the output state is undefined).
CHARACTERISTIC CURVES (TA = C, TYP.) Minimum trigger pulse width characteristic ICC-VCC characteristic Minimum trigger pulse width tw (tr) ( µ s). VCC = V.0 0.8 0. TJ = C 0.4 TI = C 0. 0 4 Circuit current ICC (ma) 8 4 0 0 C TA = C 70 C Minimum trigger pulse voltage Vtr min. (V) Supply voltage VCC (V) Output saturation voltage VCC-VOUT (V) ISOURCE-(VCC-VOUT) characteristic 0 C 70 C TA = C 0 0 0 0 Output saturation voltage VOUT (V) ISINK-VOUT characteristic VCC = V TA = 0 C C 70 C 0. 0.0.0.0.0 0 0 0 Output source current ISOURCE (ma) Output sink current ISINK (ma) ISINK-VOUT characteristic ISINK-VOUT characteristic Output saturation voltage VOUT (V) 0. VCC = V TA = C 70 C 0 C 0.0.0.0.0 0 0 0 0 C C 70 C Output saturation voltage VOUT (V) 0. VCC = V TA = C 70 C 0 C 0 C 0.0.0.0.0 0 0 0 Output sink current ISINK (ma) Output sink current ISINK (ma) 4
Propagation delay characteristic Discharge pin ISINK-VSAT characteristic Propagation delay ( µ s)..0 0.8 0. 0.4 0. 0 TA = C VCC = V VCC = V, V 0. 0. 0. Discharge pin saturation voltage VSAT (mv) 00 VCC = V 0 TA = 70 C C 0 C.0 0.0 0. 0 Minimum trigger pulse voltage ( VCC) Discharge pin (pin 7) sink current ISINK (ma) PT-TA characteristic tw-tw (tr) characteristic Total loss PT (mw) 700 00 00 400 00 00 0 C G Minimum output pulse width - trigger pulse width tw ( µ s) 4 VCC = V Vtr min =. V 0 40 0 80 0 0 4 8 Ambient temperature TA ( C) Trigger pulse width tw (tr) ( µ s) tw-ttr min. characteristic 7 VCC = V tw(tr) = sµ Minimum output pulse width - trigger pulse width tw ( µ s) 4 0 4 Minimum trigger pulse voltage Vtr min. (V)
PIN FUNCTIONS. Trigger pin (pin ) : Supplying one-third of VCC to the trigger pin triggers the circuit, changing the output voltage from low to high.. Output pin (pin ) : The maximum output current is 00 ma. Be careful not to exceed the total loss (see the PT-TA characteristic curve).. Reset pin (pin 4) : Supplying 0.4 V or less to the reset pin stops the circuit operation (such as monostable or astable multivibrator operation). When not used, the reset pin should be clamped at V to VCC. 4. Control voltage (pin ) : This voltage determines the threshold level of the comparator. It is set to two-thirds of VCC. It is possible to configure a PWM (pulse width modulation) or PPM (pulse position modulation) mode application circuit by supplying a control voltage from the outside. When this pin is not in use, it should be bypassed using a capacitor of approximately 0.0 µf for more table circuit operation.. Threshold pin (pin ) : The values of an external capacitor (C) and resistor (R) connected to this pin determine the width of the output pulse.. Discharge pin (pin 7) : This pin is used to discharge an external capacitor (if connected). It operates, when the internal flip-flop circuit is turned on, or a reset signal is applied.
APPLICATION CIRCUITS () Monostable multivibrator Fig. a Monostable Multivibrator Example VCC = to V Note Fig. b Monostable Response Waveform t = 0. ms/div Trigger input voltage: V/DIV RL R TRIGGER OUTPUT 4 8 µpc 7 C Control voltage 0.0 µ F Output voltage: V/DIV "H" "L" "L" Capacitor (C) voltage: V/DIV "H" When the µpc is configured as shown in Fig. a, it functions as a monostable multivibrator. Applying a voltage one-third as high as VCC or less (trigger pulse Note 9 ) to pin (trigger pin) drives the output to a high level. Under this condition, capacitor C starts charging through resistor R. When C is charged up to two-thirds as high as VCC, pin (threshold pin) is turned on and inverted to a low level. At this point, C starts discharging through pin 7. When a trigger pulse is applied to pin again, the same operation is repeated. Fig. b shows this operation. A capacitor connected to pin functions as a nose filter for the control voltage. If pin 4 (reset pin) is connected to V or higher (for example, by being connected to VCC), the circuit operation can be stopped by switching it from V or higher to a GND level. The output pulse width (delay) is determined theoretically by (see Fig. c): t =. C R (R = 9. kω, C = 0.0 µ F, RL = kω) Fig. c Interrelationships among Output Pulse Width, R, and C (approximate value obtained by calculation) Capacitor C capacitance ( µ F) 0.0 0. 0.0 t =. C R (R).0 kω 0.00 0.0 µ s µ s ms kω 0 kω MΩ ms 0 ms.0 s Output pulse width t MΩ s The value obtained by this equation is only an approximate value, however. If it is necessary to obtain an accurate output pulse width, determine R and C through actual measurement and confirmation; a trimmer should be used as required. Moreover, R should be 00 Ω or higher. Notes 9. Keep the trigger pulse width smaller than the output pulse width.. If the load is connected across the output and GND pins, a staircase occurs in the output waveform. The application circuits and their parameters are for references only and are not intended for use in actual design-in's. 7
() Astable multivibrator example Fig. d Astable Multivibrator Example VCC = to V Fig. e Astable Multivibrator Response Waveform t = 0. ms/div Note RL R Output voltage: V/DIV "H" "H" "H" OUTPUT Control voltage 0.0 µ F 4 8 µpc 7 R C "L" "L" Capacitor (C) voltage:.7 V/DIV (R = R = 4.8 kω, C = 0. µ F, RL = kω) When the µpc is used in a circuit configuration shown in Fig. d, the circuit is triggered by itself to operate as an astable multivibrator, because pin (trigger pin) and pin (threshold pin) are connected to each other. When the output voltage is high, capacitor C is charged through R and R. When C is charged up to a voltage two-thirds as high as VCC, the threshold pin is turned on, and the output pin becomes low. At this point C starts discharging through R. When C discharges, and the voltage across C decreases to a voltage one-third as high as VCC, the trigger pin is turned on, and the output voltage becomes high, causing the charge current to flow into C through R and R again. This operation is shown in Fig. e. Because C repeats charging and discharging between one-third as high as VCC and two-thirds as high as VCC, the oscillation frequency is not affected by the supply voltage. Oscillation is represented theoretically using the following expressions. When the output voltage is high, the charge time is : t = 0.9 (R + R) C... () When the output voltage is low, the discharge time is : t = 0.9 R C... () Adding expressions () and () determines period T : T = t + t = 0.9 (R + R) C... () Therefore, the oscillation frequency is (see Fig. f for reference) : f =.44 = T (R + R) C... (4) The duty cycle is determined by the equation () : D = Fig. f Interrelationships among Oscillation Frequency, R, R, and C (approximate value obtained by calculation) R R + R Oscillation frequency f (Hz) (Free running frequency)... () The values obtained this way are approximate values, however. If it is necessary to obtain an accurate oscillation frequency, determine R, R, and C through actual measurement and confirmation; a trimmer should be used as required. Moreover, R and R should be 00 Ω or higher. Capacitor C capacitance ( µ F) 0.0 0. 0.0 MΩ (R + R).0 MΩ 0 kω kω kω 0.00 0..0 0.0 k k 0 k 8 Note. If the load is connected across the output and GND pins, a staircase occurs in the output waveform.
8PIN PLASTIC DIP (00 mil) 8 4 A K I P L J H C G F B M R D N M NOTES ) Each lead centerline is located within 0. mm (0.0 inch) of its true position (T.P.) at maximum material condition. ) ltem "K" to center of leads when formed parallel. ITEM MILLIMETERS INCHES A. MAX. 0.400 MAX. B.7 MAX. 0.00 MAX. C.4 (T.P.) 0.0 (T.P.) D 0.0±0. 0.00 +0.004 0.00 F.4 MIN. 0.0 MIN. G.±0. 0.±0.0 H 0. MIN. 0.00 MIN. I 4. MAX. 0.70 MAX. J.08 MAX. 0.00 MAX. K 7. (T.P.) 0.00 (T.P.) L.4 0. M 0.+0. 0.0 0.0 +0.004 0.00 N 0. 0.0 P 0.9 MIN. 0.0 MIN. R 0~ 0~ P8C-0-00B,C- 9
8 PIN PLASTIC SOP ( mil) 8 detail of lead end 4 A F P H G I J E K C B L N D M M NOTE Each lead centerline is located within 0. mm (0.00 inch) of its true position (T.P.) at maximum material condition. ITEM MILLIMETERS INCHES A B C D.7 MAX. 0.78 MAX..7 (T.P.) 0.40 +0. 0.0 0. MAX. 0.0 MAX. 0.00 (T.P.) 0.0 +0.004 0.00 E F G H I J 0.±0..8 MAX..49.±0. 4.4. 0.004±0.004 0.07 MAX. 0.09 0.±0.0 0.7 0.04 K 0. +0. 0.0 0.00 +0.004 0.00 L 0.±0. 0.04 +0.008 0.009 M N 0. 0. 0.00 0.004 P +7 +7 S8GM-0-B-4
RECOMMENDED SOLDERING CONDITIONS The conditions listed below shall be met when soldering the µpc. Please consult with our sales offices in case any other soldering process is used, or in case soldering is done under different conditions. Surface-Mount Devices For details of the recommended soldering conditions, refer to our document SMD Surface Mount Technology Manual (IEI-07). µpcg Soldering process Soldering conditions Symbol Infrared reflow Peak package s surface temperature: 0 C IR0-00 Reflow time: 0 seconds or less (at C or more) Maximum allowable number of reflow processes: Exposure limit: NoneNote VPS Peak package s surface temperature: C VP-00 Reflow time: 40 seconds or less (at 00 C or more) Maximum allowable number of reflow processes: Exposure limit: NoneNote Wave soldering Temperature in the soldering vessel: 0 C or less WS0-00 Soldering time: seconds or less Maximum allowable number of reflow processes: Exposure limit: None Note Partial heating method Pin temperature: 00 C or less Flow time: seconds or less Exposure limit: NoneNote Note Exposure limit before soldering after dry-pack package is opened. Storage conditions: Temperature of C or less and maximum relative humidity of % or less Caution Do not apply more than a single process at once, except for Partial heating method. Through-Hole Mount Devices µpcc Soldering process Wave soldering Soldering conditions Temperature in the soldering vessel: 0 C or less Soldering time: seconds or less REFERENCE Document name NEC Semiconductor Device Reliability/Quality Control System Quality Grade on NEC Semiconductor Devices Semiconductor Device Mounting Technology Manual Semiconductor Device Package Manual Guide to Quality Assurance for Semiconductor Devices Semiconductor Selection Guide Document No. IEI- IEI-09 IEI-07 IEI- MEI-0 MF-4
[MEMO] No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others. While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices, the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or property arising from a defect in an NEC semiconductor device, customer must incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and anti-failure features. NEC devices are classified into the following three quality grades: Standard, Special, and Specific. The Specific quality grade applies only to devices developed based on a customer designated quality assurance program for a specific application. The recommended applications of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device before using it in a particular application. Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices in Standard unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact NEC Sales Representative in advance. Anti-radioactive design is not implemented in this product. M4 94.
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