DS88C120N National Semiconductor, DS88C120N Datasheet

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DS88C120N

Manufacturer Part Number
DS88C120N
Description
IC LINE RECEIVER RS422/423 16DIP
Manufacturer
National Semiconductor
Type
Line Receiverr
Datasheet

Specifications of DS88C120N

Number Of Drivers/receivers
2/0
Voltage - Supply
4.5 V ~ 15 V
Mounting Type
Through Hole
Package / Case
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Protocol
-
Other names
*DS88C120N
DS88C120

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
DS88C120N
Manufacturer:
TOSHIBA
Quantity:
101
© 2004 National Semiconductor Corporation
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
over a common-mode range of
over a range of
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 180Ω terminating
resistor and the output gate contains a logic strobe for time
discrimination. The DS78C120 is specified over a −55˚C to
+125˚C temperature range.
Connection Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
±
15V.
±
10V and a
For Complete Military Product Specifications,
±
200 mV input signal
DS005801
refer to the appropriate SMD or MDS.
±
See NS Package Number J16A
Order Number DS78C120J/883
300 mV signal
Dual-In-Line Package
Top View
Features
n Full compatibility with EIA Standards RS232-C, RS422
n Input voltage range of
n Separate strobe input for each receiver
n 1/2 V
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
and RS423, Federal Standards 1020, 1030 and
MIL-188-114
common-mode)
CC
strobe threshold for CMOS compatibility
00580101
±
15V (differential or
www.national.com
May 1999

Related parts for DS88C120N

DS88C120N Summary of contents

Page 1

... The DS78C120 is specified over a −55˚C to +125˚C temperature range. Connection Diagram TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation Features n Full compatibility with EIA Standards RS232-C, RS422 and RS423, Federal Standards 1020, 1030 and MIL-188-114 ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Input Voltage Strobe Voltage Output Sink Current Maximum Power Dissipation (Note 1) at 25˚C Cavity Package Molded Package Storage Temperature Range ...

Page 3

Electrical Characteristics Note 3: Unless otherwise specified min/max limits apply across the −55˚C to +125˚C temperature range for the DS78C120. All typical values for and V = 0V. CM Note 4: All currents into device pins shown ...

Page 4

Schematic Diagram ( 1 Application Hints www.national.com ⁄ Circuit Shown) 2 Balanced Data Transmission Unbalanced Data Transmission 4 00580102 00580105 00580106 ...

Page 5

Application Hints (Continued) Logic Level Translator 00580107 The DS78C120 may be used a level transistor to interface ± between 12V MOS, ECL, TTL and CMOS. To configure, bias either input to voltage equal to 1 input signal, and the other ...

Page 6

Application Hints (Continued) FIGURE 2. FAIL-SAFE OPERATION Communication systems require elements of a system to detect the presence of signals in the transmission lines, and it is desirable to have the system shut-down in a fail-safe mode if the transmission ...

Page 7

Application Hints (Continued) Unbalanced RS-423 and RS-232 Fail-Safe Balanced RS-422 Fail Safe 00580114 7 00580112 00580113 www.national.com ...

Page 8

Application Hints (Continued) Truth Table (For Balanced Fail-Safe) www.national.com 00580115 00580116 Input Strobe A-OUT B-OUT C-OUT ...

Page 9

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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