DS75154M National Semiconductor, DS75154M Datasheet

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DS75154M

Manufacturer Part Number
DS75154M
Description
IC LINE RECEIVER QUAD 16-SOIC
Manufacturer
National Semiconductor
Type
Line Receiverr
Datasheet

Specifications of DS75154M

Number Of Drivers/receivers
0/4
Protocol
RS232
Voltage - Supply
5V or 12V
Mounting Type
Surface Mount
Package / Case
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*DS75154M

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© 1998 National Semiconductor Corporation
DS75154
Quad Line Receiver
General Description
The DS75154 is a quad monolithic line receiver designed to
satisfy the requirements of the standard interface between
data terminal equipment and data communication equipment
as defined by EIA Standard RS-232C. Other applications are
in relatively short, single-line, point-to-point data transmis-
sion systems and for level translators. Operation is normally
from a single 5V supply; however, a built-in option allows op-
eration from a 12V supply without the use of additional com-
ponents. The output is compatible with most TTL and LS cir-
cuits when either supply voltage is used.
In normal operation, the threshold-control terminals are con-
nected to the V
supplied via the alternate V
vides a wide hysteresis loop which is the difference between
the positive-going and negative-going threshold voltages. In
this mode, if the input voltage goes to zero, the output volt-
age will remain at the low or high level as determined by the
previous input.
For fail-safe operation, the threshold-control terminals are
open. This reduces the hysteresis loop by causing the
Schematic Diagram
Note: When using V
threshold control pins.
CC1
CC1
(pin 15), V
terminal, pin 15, even if power is being
CC2
CC2
(pin 16) may be left open or shorted to V
terminal, pin 16. This pro-
DS005795
negative-going threshold voltage to be above zero. The
positive-going threshold voltage remains above zero as it is
unaffected by the disposition of the threshold terminals. In
the fail-safe mode, if the input voltage goes to zero or an
open-circuit condition, the output will go to the high level re-
gardless of the previous input condition.
Features
n Input resistance, 3 k
n Input threshold adjustable to meet “fail-safe”
n Inverting output compatible with TTL or LS
n Built-in hysteresis for increased noise immunity
n Output with active pull-up for symmetrical switching
n Standard supply voltage — 5V or 12V
CC1
range
requirements without using external components
speeds
. When using V
CC2
, V
CC1
DS005795-1
must be left open or connected to the
to 7 k
over full RS-232C voltage
www.national.com
May 1998

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DS75154M Summary of contents

Page 1

... V (pin 16) may be left open or shorted to V CC1 CC2 threshold control pins. © 1998 National Semiconductor Corporation DS005795 negative-going threshold voltage to be above zero. The positive-going threshold voltage remains above zero unaffected by the disposition of the threshold terminals. In the fail-safe mode, if the input voltage goes to zero or an open-circuit condition, the output will go to the high level re- gardless of the previous input condition ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Normal Supply Voltage (Pin 15 CC1 Alternate Supply Voltage (Pin 16 CC2 Input Voltage Storage Temperature Range Maximum Power Dissipation (Note 1) at 25˚C ...

Page 3

... Note 6: Only one output at a time should be shorted. Typical Performance Characteristics Output Voltage vs Input Voltage Connection Diagram (Continued) DS005795-10 Dual-In-Line Package DS005795-2 Top View Order Number DS75154M See NS Package Number M16A 3 www.national.com ...

Page 4

DC Test Circuits and Truth Tables Test Measure Open-Circuit Input V OH (Fail-Safe min (Fail-Safe) V T− min (Normal max min ...

Page 5

DC Test Circuits and Truth Tables T Open Open Open Pin 15 Gnd Open Open Pin 15 Pin 15 Pin 15 T Open Pin 15 Open Pin 15 (Continued) DS005795 CC1 CC2 (Pin 15) (Pin 16) 5V Open ...

Page 6

DC Test Circuits and Truth Tables (Continued) Each output is tested separately. FIGURE Test Circuit and Switching Time Waveforms Note 1: The pulse generator has the following characteristics: Z Note 2: C includes probe and jig ...

Page 7

7 ...

Page 8

... 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. SO Package (M) Order Number DS75154M NS Package Number M16A 2. A critical component in any component of a life support ...

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