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DS78C120J/883 Datasheet

  • DS78C120J/883

  • Dual CMOS Compatible Differential Line Receiver

  • 9頁(yè)

  • NSC

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DS78C120 Dual CMOS Compatible Differential Line Receiver
May 1999
DS78C120
Dual CMOS Compatible Differential Line Receiver
General Description
The DS78C120 is a high performance, dual differential,
CMOS compatible line receiver for both balanced and unbal-
anced digital data transmission. The inputs are compatible
with EIA, Federal and MIL standards.
Input specifications meet or exceed those of the popular
DS7820 line receiver.
The line receiver will discriminate a
鹵
200 mV input signal
over a common-mode range of
鹵
10V and a
鹵
300 mV signal
over a range of
鹵
15V.
Circuit features include hysteresis and response control for
applications where controlled rise and fall times and/or high
frequency noise rejection are desirable. Threshold offset
control is provided for fail-safe detection, should the input be
open or short. Each receiver includes a 180鈩?terminating re-
sistor and the output gate contains a logic strobe for time dis-
crimination. The DS78C120 is specified over a 鈭?5藲C to
+125藲C temperature range.
Features
n
Full compatibility with EIA Standards RS232-C, RS422
and RS423, Federal Standards 1020, 1030 and
MIL-188-114
n
Input voltage range of
鹵
15V (differential or
common-mode)
n
Separate strobe input for each receiver
n
1/2 V
CC
strobe threshold for CMOS compatibility
n
5k typical input impedance
n
50 mV input hysteresis
n
200 mV input threshold
n
Operation voltage range = 4.5V to 15V
n
Separate fail-safe mode
Connection Diagram
Dual-In-Line Package
DS005801-1
Top View
For Complete Military Product Specifications,
refer to the appropriate SMD or MDS.
Order Number DS78C120J/883
See NS Package Number J16A
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
漏 1999 National Semiconductor Corporation
DS005801
www.national.com

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