DS9637A
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SNLS388D –MAY 1998–REVISED APRIL 2013
DS9637A Dual Differential Line Receiver
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1FEATURES DESCRIPTION
The DS9637A is a Schottky dual differential line
2• Dual Channel receiver which has been specifically designed to
• Single 5V Supply satisfy the requirements of EIA Standards RS-422
• Satisfies EIA Standards RS-422 and RS423 and RS-423. In addition, the DS9637A satisfies the
requirements of MIL-STD 188-114 and is compatible
• Built-in ±35 mV Hysteresis with the International Standard CCITT
• High Input Common Mode Voltage Range recommendations. The DS9637A is suitable for use
• High Input impedance as a line receiver in digital data systems, using either
single ended or differential, unipolar or bipolar
• TTL Compatible Outputs transmission. It requires a single 5V power supply
• Schottky Technology and has Schottky TTL compatible outputs. The
• Extended Temperature Range DS9637A has an operational input common mode
range of ±7V either differentially or to ground.
Connection Diagram
Top View
Figure 1. 8-Lead SOIC (D Package)
8-Lead PDIP (P Package)
For Complete Military Product Specifications,
refer to the appropriate SMD or MDS.
8-Lead CDIP (NAB Package)
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 1998–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
DS9637A
SNLS388D –MAY 1998–REVISED APRIL 2013
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings(1)(2)
Storage Temperature Range
CDIP −65°C to + 175°C
PDIP −65°C to + 150°C
Lead Temperature
CDIP
(Soldering, 30 seconds) 300°C
PDIP and SOIC Packages
(Soldering, 10 seconds) 265°C
Maximum Power Dissipation(3) at 25°C
CDIP 1300 mW
PDIP 930 mW
SOIC 810 mW
VCC Lead Potential to Ground −0.5V to 7.0V
Input Potential to Ground ±15V
Differential Input Voltage ±15V
Output Potential to Ground −0.5V to +5.5V
Output Sink Current 50 mA
ESD Susceptibility, HBM ≥2 kV
(1) Absolute Maximum Ratings are those values beyond which the safety of the device cannot be ensured. 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.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) Derate CDIP 8.7 mW/°C above 25°C; derate PDIP 7.5 mW/°C above 25°C; derate SOIC package 6.5 mW/°C above 25°C.
Recommended Operating Conditions
DS9637AM Min Max Units
Supply Voltage (VCC) 4.5 5.5 V
Operating Temperature (TA)−55 +125 °C
DS9637AC
Supply Voltage (VCC) 4.75 5.25 V
Operating Temperature (TA) 0 +70 °C
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DS9637A
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SNLS388D –MAY 1998–REVISED APRIL 2013
Electrical Characteristics(1)(2)
Over recommended operating temperature and supply voltage ranges, unless otherwise specified
Symbol Parameter Conditions Min Typ Max Units
VTH Differential Input Threshold −7.0V ≤VCM ≤+7.0V −0.2 +0.2 V
Voltage(3)
VTH(R) Differential Input Threshold −7.0V ≤VCM ≤+7.0V −0.4 +0.4 V
Voltage(4)
IIInput Current(5) VI= 10V, 0V ≤VCC ≤+5.5V 1.1 3.25 mA
VI=−10V, 0V ≤VCC ≤+5.5V −1.6 −3.25
VOL Output Voltage LOW IOL = 20 mA, VCC = Min 0.35 0.5 V
VOH Output Voltage HIGH IOH =−1.0 mA, VCC = Min 2.5 3.5 V
IOS Output Short Circuit Current(6) VO= 0V, VCC = Max −40 −75 −100 mA
ICC Supply Current VCC = Max, VI+ = 0.5V, 35 50 mA
VI−= GND
VHYST Input Hysteresis VCM = ±7.0V (See Curves) 70 mV
(1) Unless otherwise specified Min/Max limits apply across the −55°C to +125°C temperature range for DS9637AM and across the 0°C to
+70°C range for the DS9637ASC. All typicals are given for VCC = 5V and TA= 25°C.
(2) 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.
(3) VDIFF (Differential Input Voltage) = (VI+) −(VI−). VCM (Common Mode Input Voltage) = VI+ or VI−.
(4) 500Ω±1% in series with inputs.
(5) The input not under test is tied to ground.
(6) Only one output at a time should be shorted.
Switching Characteristics
VCC = 5.0V, TA= 25°C
Symbol Parameter Conditions Min Typ Max Units
tPLH Propagation Delay Time See AC Test Circuit 15 25 ns
Low to High
tPHL Propagation Delay Time See AC Test Circuit 13 25 ns
High to Low
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DS9637A
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SNLS388D –MAY 1998–REVISED APRIL 2013
AC TEST CIRCUIT AND WAVEFORMS
Notes:
CLincludes jig and probe capacitance.
All diodes are FD700 or equivalent.
Figure 5. AC Test Circuit and Waveforms
VI
Amplitude: 1.0V
Offset: 0.5V
Pulse Width: 100 ns
PRR: 5.0 MHz
tr= tf≤5.0 ns
Figure 6. Typical Applications
Notes:
RT≥50Ωfor RS-422 operation.
RTcombined with input impedance of receivers must be greater than 90Ω.
Figure 7. RS-422 System Application (FIPS 1020) Differential Simplex Bus Transmission
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DS9637A
SNLS388D –MAY 1998–REVISED APRIL 2013
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REVISION HISTORY
Changes from Revision C (April 2013) to Revision D Page
• Changed layout of National Data Sheet to TI format ............................................................................................................ 5
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