PART MAX3183. MAX3181EUK-T -40 C to +85 C 5 SOT23-5 ADKG MAX3182EUK-T -40 C to +85 C 5 SOT23-5 ADKH MAX3183EUK-T -40 C to +85 C 5 SOT23-5 ADKI

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1 ; Rev 1; 7/99 +3 to +5.5, 1.5Mbps General Description The MAX318MAX3183 are single RS-232 receivers in a SOT23-5 package for space- and cost-cotrained applicatio requiring minimal RS-232 communicatio. These devices minimize power and heat dissipation by couming only.5µa supply current from a +3. to +5.5 supply voltage. They guarantee true RS-232 performance up to a 1.5Mbps data rate. The MAX318/MAX3182 feature a three-state TTL/ CMOS receiver output that is controlled by an EN logic input. The MAX3181/MAX3183 feature an INALID output that indicates valid RS-232 signals at the receiver input for applicatio requiring automatic system wakeup. The MAX318/MAX3181 receivers have a standard inverting output, while the MAX3182/MAX3183 receivers have a noninverting output. Diagnostic Ports Telecommunicatio Networking Equipment Applicatio Set-Top Boxes Digital Cameras Hand-Held Equipment Features Tiny SOT23-5 Package.5µA Supply Current 1.5Mbps Guaranteed Data Rate Meet EIA/TIA-232 and.28/.24 Specificatio Down to CC = +3. INALID Output Indicates alid RS-232 Signal at Receiver Input (MAX3181/MAX3183) Three-State TTL/CMOS Receiver Output (MAX318/MAX3182) Noninverting RS-232 Output (MAX3182/MAX3183) PART Ordering Information TEMP. RANGE PIN- PACKAGE TOP MARK MAX318EUK-T -4 C to +85 C 5 SOT23-5 ADKF MAX3181EUK-T -4 C to +85 C 5 SOT23-5 ADKG MAX3182EUK-T -4 C to +85 C 5 SOT23-5 ADKH MAX3183EUK-T -4 C to +85 C 5 SOT23-5 ADKI Selector Guide MAX318MAX3183 PART MAX318 PACKAGE SOT23-5 SUPPLY CURRENT (µa).5 EN INPUT INALID OUTPUT INERTING Pin Configuratio/Functional Diagrams NONINERTING MAX3181 SOT MAX3182 SOT MAX3183 SOT TOP IEW EN (INALID) GND 1 MAX318 5 MAX3181 5k 2 CC EN (INALID) GND 1 MAX MAX3183 5k 2 CC ( ) ARE FOR MAX3181/MAX3183 ONLY. SOT23-5 SOT23-5 Maxim Integrated Products 1 For free samples & the latest literature: or phone For small orders, phone

2 +3 to +5.5, 1.5Mbps MAX318MAX3183 ABSOLUTE MAXIMUM RATINGS CC to GND to +6 to GND...±25 EN,, INALID to GND to ( CC +.3) Continuous Power Dissipation (T A = +7 C) SOT23-5 (derate 7.1mW/ C above +7 C)...571mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditio beyond those indicated in the operational sectio of the specificatio is not implied. Exposure to absolute maximum rating conditio for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS Operating Temperature Range...-4 C to +85 C Storage Temperature Range C to +15 C Lead Temperature (soldering, 1sec)...+3 C ( CC = +3. to +5.5, T A = T MIN to T MAX, unless otherwise noted. Typical values are at CC = +5. and T A = +25 C.) (Note 1) Supply oltage Supply Current PARAMETER DC CHARACTERISTICS LOGIC INPUT (EN) Logic Threshold Low Logic Threshold High Leakage Current LOGIC OUTPUT INALID Output oltage Low INALID Output oltage High RECEIER INPUT Input oltage Range Input Threshold Low Input Threshold High Input Hysteresis Threshold to INALID Output High SYMBOL CC I CC IL IH I EN IOL IOH ITL ITH HYST ITOH CC = 3.3 or 5, = CC or GND, no load CC = 3.3 CC = 5. I SINK = 1.6mA I SOURCE = 1.mA CC = 3.3 CC = 5. CC = 3.3 CC = 5. Positive threshold Negative threshold CONDITIONS MIN TYP MAX CC ±.1 ± UNITS µa µa m Threshold to INALID Output Low ITOL Input Resistance R kω RECEIER OUTPUT Output Leakage Current I Receiver disabled ±.5 ±1 µa Output oltage Low OL I SINK = 1.6mA.4 Output oltage High OH I SOURCE = 1.mA CC - CC

3 +3 to +5.5, 1.5Mbps ELECTRICAL CHARACTERISTICS (continued) ( CC = +3. to +5.5, T A = T MIN to T MAX, unless otherwise noted. Typical values are at CC = +5. and T A = +25 C.) (Note 1) PARAMETER TIMING CHARACTERISTICS Maximum Data Rate Receiver Propagation Delay, High-to-Low Receiver Propagation Delay, Low-to-High Receiver Skew Receiver Output Enable Time Receiver Output Disable Time Receiver Positive or Negative Threshold to INALID High Receiver Positive or Negative Threshold to INALID Low SYMBOL t PHL t PLH t RS t ROE t ROD t INH t INL C L = 5pF CONDITIONS to ; C L = 15pF.15 µs to ; C L = 15pF.15 µs t PHL - t PLH, Figure 1 MIN TYP MAX UNITS Mbps µs MAX318MAX3183 Note 1: Specificatio are 1% tested at T A = +25 C. Limits over temperature are guaranteed by design. ( CC = +5, T A = +25 C, unless otherwise noted.) Typical Operating Characteristics SUPPLY CURRENT vs. DATA RATE TO INALID HIGH vs. SUPPLY OLTAGE.7.6 R L = 5kΩ C L = 1pF MAX MAX318-2 SUPPLY CURRENT (ma) CC = 5 CC = 3.3 tinh () DATA RATE (Mbps) CC () 3

4 +3 to +5.5, 1.5Mbps MAX318MAX3183 Typical Operating Characteristics (continued) ( CC = +5, T A = +25 C, unless otherwise noted.) tinl (µs) TO INALID LOW vs. SUPPLY OLTAGE CC () MAX318-3 ENABLE MAX318 ENABLE ASSERTION TO RESPONSE CC = 5. R L = 5kΩ C L = 1pF 5/div MAX318-4 Pin Description PIN MAX318 MAX3181 NAME MAX3182 MAX3183 FUNCTION 1 EN EN Receiver Output Enable INALID INALID Output of the alid Input Detector 2 GND GND GND GND Ground 3 Inverting Receiver Output Noninverting Receiver Output 4 Receiver Input 5 CC CC CC CC Supply oltage 4

5 +3 to +5.5, 1.5Mbps Detailed Description The MAX318MAX3183 are EIA/TIA-232 and.28/.24 communicatio receivers that convert RS-232 signals to CMOS logic levels. The devices operate on a supply voltage of +3 to +5.5 and have a 1.5Mbps data rate capability. They achieve a.5µa typical supply current. The MAX318/MAX3182 have a receiver enable control (EN), while the MAX3181/MAX3183 contain a signal invalid output (INALID). The MAX318/ MAX3181 invert the signal relative to. The MAX3182/MAX3183 are not inverted. The devices come in SOT23-5 packages. 5 5% 5% Signal Invalid Detector If no valid signal levels appear on for 3µs (typ), INALID goes low. This event typically occurs if the RS- 232 cable is disconnected or if the connected peripheral tramitter is turned off. INALID goes high when a valid level is applied to the RS-232 receiver input. Figure 2 shows the input levels and timing diagram for INALID operation. Enable Input The MAX318/MAX3182 feature an enable input. Drive EN high to force into a high-impedance state. In this state, the devices ignore incoming RS-232 signals. Drive EN low for normal operation. Power-Supply Decoupling In most circumstances, a.1µf CC bypass capacitor is adequate for power-supply decoupling. Connect the bypass capacitor as close to the IC as possible. MAX318MAX3183 t PLH t PHL OH 5% 5% OL Chip Information TRANSISTOR COUNT: 41 Figure 1. Receiver Propagation-Delay Timing RECEIER INPUT LEELS ALID SIGNALS (INALID = 1) INDETERMINATE INALID SIGNALS (INALID = ) INDETERMINATE ALID SIGNALS (INALID = 1) RECEIER INPUT OLTAGE () CC INALID OUTPUT () t INL t INH INALID REGION Figure 2. Input Levels and INALID Timing 5

6 +3 to +5.5, 1.5Mbps MAX318MAX3183 Package Information SOT5L.EPS Maxim cannot assume respoibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licees are implied. Maxim reserves the right to change the circuitry and specificatio without notice at any time. 6 Maxim Integrated Products, 12 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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