DS9639A TI1 | Alldatasheet
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DS9639A Dual Differential Line Receiver Literature Number: SNOSC38
Dual Differential Line Receiver General Description The DS9639A is a Schottky dual differential line receiver which has been specifically designed to satisfy the require- ments of EIA Standards RS-422, RS-423 and RS-232C. In addition, the DS9639A satisfies the requirements of MIL-STD 188-114 and is compatible with the International Standard CCITT recommendations. The DS9639A is suit- able for use as a line receiver in digital data systems, using either single ended or differential, unipolar or bipolar trans- mission. It requires a single 5.0V power supply and has Schottky TTL compatible outputs. The DS9639A has an op- erational input common mode range of ±7.0V either differen- tially or to ground.
Features
n Single 5.0V supply n Satisfies EIA Standards RS-422, RS-423 and RS-232C n Built-in±35 mV hysteresis n High input common mode voltage range n High input impedance n TTL compatible outputs n Schottky technology Connection Diagram 8-Lead DIP DS009623-1 Top View Order Number DS9639ACN See NS Package Number N08E February 1996 DS9639A Dual Differential Line Receiver © 1998 National Semiconductor Corporation DS009623 www.national.com
Absolute Maximum Ratings(Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range −65˚C to +175˚C Operating Temperature Range 0˚C to +70˚C Lead Temperature Molded DIP (soldering, 10 sec.) 265˚C V CC Lead Potential to Ground −0.5V to +7.0V Input Potential to Ground Lead ±25V Differential Input Voltage ±25V Output Differential to Ground Lead −0.5V to 5.5V Output Sink Current 50 mA Maximum Power Dissipation (Note 1) at 25˚C Molded Package 930 mW Recommended Operating Conditions Min Typ Max Units Supply Voltage (VCC ) 4.75 5.0 5.25 V Operating Temperature (TA) 0 25 70 ˚C Note 1:Derate molded DIP package 7.5mW/˚C above 25˚C. Electrical Characteristics(Notes 3, 4) Over recommended operating temperature and supply voltage ranges, unless otherwise specified Symbol Parameter Conditions (Note 2) Min Typ Max Units VTH Differential Input −7.0V ≤ VCM ≤ +7.0V −0.2 +0.2 V Threshold Voltage (Note 6) VTH(R) Differential Input −7.0V ≤ VCM ≤ +7.0V −0.4 +0.4 V Threshold Voltage (Note 7) II Input Current (Note 8) V I = 10V, 0V≤ VCC ≤ 5.5V 1.1 3.25 mA VOL Output Voltage LOW I OL = 20 mA, VCC = Min 0.35 0.5 V VOH Output Voltage HIGH I OH = −1.0 mA, VCC = Min 2.5 3.5 V IOS Output Short Circuit Current (Note 5) VO = 0V, VCC = Max −40 −75 −100 mA ICC Supply Current V CC = Max, VI+ = 0.5V, 35 50 mA VI− = GND VHYST Input Hysteresis V CM = ±7.0V (See Curves) 70 mV Switching Characteristics VCC = 5.0V, TA = 25˚C Symbol Parameter Conditions Min Typ Max Units tPLH Propagation Delay Time See AC Test Circuit 55 85 ns Low to High t PHL Propagation Delay Time See AC Test Circuit 50 75 ns High to Low 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 0˚C to +70˚C range for the DS9639A. All typicals are given for VCC = 5V and TA = 25˚C. 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 7:500Ω ±1% in series with inputs. Note 8:The input not under test is tied to ground. www.national.com 2
Physical Dimensionsinches (millimeters) unless otherwise noted LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI- CONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or sys- tems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose fail- ure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 Molded Dual-In-Line Package (N) Order Number DS9639ACN DS9639A Dual Differential Line Receiver National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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