Details, datasheet, quote on part number: DS9637ACN
CategoryInterface and Interconnect => RS-422/RS-423
DescriptionDS9637A - Dual Differential Line Receiver, Package: Soic Narrow, Pin Nb=8
CompanyNational Semiconductor Corporation
DatasheetDownload DS9637ACN datasheet
Cross ref.Similar parts: 5962-8752401PA, UA9637ACP, UA9639
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Features, Applications

The is a Schottky dual differential line receiver which has been specifically designed to satisfy the requirements of EIA Standards RS-422 and RS-423. In addition, the DS9637A satisfies the requirements of MIL-STD 188-114 and is compatible with the International Standard CCITT recommendations. The DS9637A is suitable for use as a line receiver in digital data systems, using either single ended or differential, unipolar or bipolar transmission. It requires a single 5V power supply and has Schottky TTL compatible outputs. The DS9637A has an operational input common mode range 7V either differentially or to ground.


Dual channel Single 5V supply Satisfies EIA standards RS-422 and RS423 Built-in 35 mV hysteresis High input common mode voltage range High input impedance TTL compatible outputs Schottky technology Extended temperature range

Top View Order Number or DS9637ACN See NS Package Number or N08E For Complete Military Product Specifications, refer to the appropriate SMD or MDS. Order Number DS9637AMJ/883 See NS Package Number J08A

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Ceramic DIP + 175C Molded DIP + 150C Lead Temperature Ceramic DIP (Soldering, 30 seconds) 300C Molded DIP and SO Package (Soldering, 10 seconds) 265C Maximum Power Dissipation (Note at 25C Cavity Package 1300 mW Molded Package mW SO Package to 7.0V VCC Lead Potential to Ground

Input Potential to Ground Differential Input Voltage Output Potential to Ground Output Sink Current

DS9637AM Supply Voltage (VCC) Operating Temperature (TA) DS9637AC Supply Voltage (VCC) Operating Temperature (TA) Min Max Units V C

Note 1: Derate cavity package 8.7 mW/C above 25C; derate molded DIP package 7.5 mW/C above 25C; derate SO package 6.5 mW/C above 25C.

Over recommended operating temperature and supply voltage ranges, unless otherwise specified Symbol VTH VTH(R) II VOL VOH IOS ICC VHYST Parameter Differential Input Threshold Voltage (Note 6) Differential Input Threshold Voltage (Note 7) Input Current (Note 8) Output Voltage LOW Output Voltage HIGH Output Short Circuit Current (Note 5) Supply Current Input Hysteresis VCC = Max, VI+ = 0.5V, VI- = GND VCM 7.0V (See Curves) 10V, 0V VCC -10V, 0V VCC +5.5V IOL = 20 mA, VCC = Min IOH = -1.0 mA, VCC = Min = 0V, VCC = Max mA -7.0V VCM +0.4 V Conditions -7.0V VCM +7.0V Min -0.2 Typ Max +0.2 Units V

Note 2: "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The tables of "Electrical Characteristics" provide conditions for actual device operation. Note 3: Unless otherwise specified Min/Max limits apply across the to +125C temperature range for DS9637AM and across the to +70C range for the DS9637ASC. All typicals are given for VCC = 5V and = 25C. Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are referenced to ground unless otherwise specified. Note 5: Only one output at a time should be shorted. Note 6: VDIFF (Differential Input Voltage) = (VI+) - (VI-). VCM (Common Mode Input Voltage) = VI+ or VI-. Note in series with inputs. Note 8: The input not under test is tied to ground.

VCC = 25C Symbol tPLH tPHL Parameter Propagation Delay Time Low to High Propagation Delay Time High to Low See AC Test Circuit 25 ns Conditions See AC Test Circuit Min Typ 15 Max 25 Units ns


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