DS96173 National Semiconductor, DS96173 Datasheet

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DS96173

Manufacturer Part Number
DS96173
Description
RS-485/RS-422 Quad Differential Line Receivers
Manufacturer
National Semiconductor
Datasheet

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© 1998 National Semiconductor Corporation
DS96173/DS96175
RS-485/RS-422 Quad Differential Line Receivers
General Description
The DS96173 and DS96175 are high speed quad differential
line receivers designed to meet EIA Standard RS-485. The
devices have TRI-STATE
anced multipoint data bus transmission at rates up to 10
Mbps. The receivers feature high input impedance, input
hysteresis for increased noise immunity, and input sensitivity
of 200 mV over a common mode input voltage range of −7V
to +12V. The receivers are therefore suitable for multipoint
applications in noisy environments. The DS96173 features
an active high and active low Enable, common to all four re-
ceivers. The DS96175 features separate active high Enables
for each receiver pair. Compatible RS-485 drivers, transceiv-
ers, and repeaters are also offered to provide optimum bus
performance. The respective device types are DS96172,
DS96174, DS96176 and DS96177.
Connection Diagrams
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
16-Lead DIP
®
DS96173
outputs and are optimized for bal-
Order Number DS96173CN or DS96175CN
DS009628
DS009628-1
See NS Package Number N16E
Features
n Meets EIA Standard RS-485, RS-422A, RS-423A
n Designed for multipoint bus applications
n TRI-STATE Outputs
n Common mode input voltage range: −7V to +12V
n Operates from single +5V supply
n Input sensitivity of
n Input hysteresis of 50 mV typical
n High input impedance
n DS96173/DS96175 are lead and function compatible
with SN75173/75175 or the AM26LS32/MC3486
respectively
±
16-Lead DIP
200 mV over common mode range
DS96175
DS009628-2
www.national.com
June 1998

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DS96173 Summary of contents

Page 1

... DS96173/DS96175 RS-485/RS-422 Quad Differential Line Receivers General Description The DS96173 and DS96175 are high speed quad differential line receivers designed to meet EIA Standard RS-485. The devices have TRI-STATE ® outputs and are optimized for bal- anced multipoint data bus transmission at rates Mbps ...

Page 2

... 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 DS96173/DS96175. All typicals are given for V Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are reference to ground unless otherwise specified. ...

Page 3

... Output Enable Time to Low Level PZL t Output Disable Time from High Level PHZ t Output Disable Time from Low Level PLZ Function Tables (Each Receiver) DS96173 Differential Inputs High Level L = Low Level X = Immaterial Z = High Impedance (off) (Each Receiver) DS96175 Differential Inputs ...

Page 4

... Note 11: DS96173 with active high and active low Enables is shown here. DS96175 has active high Enable only. Note 12: All diodes are 1N916 or equivalent. Note 13: To test the active low Enable E of DS96173, ground E and apply an inverted input waveform DS96175 has active high Enable only. Typical Application Note: The line length should be terminated at both ends in its characteristic impedance ...

Page 5

5 ...

Page 6

... 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. Molded Dual-In-Line Package (N) Order Number DS96173CN or DS96175CN NS Package Number N16E 2 ...

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