January 1996
DS26LS32C/DS26LS32M/DS26LS32AC/DS26LS33C/
DS26LS33M/DS26LS33AC Quad Differential Line
Receivers
General Description
Features
Y
High differential or common-mode input voltage ranges
The DS26LS32 and DS26LS32A are quad differential line
receivers designed to meet the RS-422, RS-423 and Feder-
al Standards 1020 and 1030 for balanced and unbalanced
digital data transmission.
g
g
of 7V on the DS26LS32 and DS26LS32A and 15V
on the DS26LS33 and DS26LS33A
Y
Y
g
0.2V sensitivity over the input voltage range on the
g
DS26LS32 and DS26LS32A,
DS26LS33 and DS26LS33A
0.5V sensitivity on the
The DS26LS32 and DS26LS32A have an input sensitivity of
g
DS26LS33 and DS26LS33A have an input sensitivity of
200 mV over the input voltage range of
7V and the
DS26LS32 and DS26LS32A meet all requirements of
RS-422 and RS-423
g
500 mV over the input voltage range of 15V.
Y
Y
6k minimum input impedance
Both the DS26LS32A and DS26LS33A differ in function
from the popular DS26LS32 and DS26LS33 in that input
pull-up and pull-down resistors are included which prevent
output oscillation on unused channels.
100 mV input hysteresis on the DS26LS32 and
DS26LS32A, 200 mV on the DS26LS33 and
DS26LS33A
Y
Y
Operation from a single 5V supply
Each version provides an enable and disable function com-
mon to all four receivers and features TRI-STATE outputs
with 8 mA sink capability. Constructed using low power
Schottky processing, these devices are available over the
full military and commerical operating temperature ranges.
TRI-STATE outputs, with choice of complementary out-
put enables for receiving directly onto a data bus
É
Logic Diagram
TL/F/5255–1
Connection Diagram
Truth Table
ENABLE
ENABLE
Input
Output
Dual-In-Line Package
0
1
X
Hi-Z
1
t
See
V
V
V
V
(Max)
(Min)
ID
TH
Note Below
s
0
ID
TH
e
HI-Z
TRI-STATE
Note: Input conditions may be any combination not defined for ENABLE
and ENABLE.
Order Number DS26LS32CM, DS26LS32CN,
DS26LS32MJ, DS26LS32ACM, DS26LS32ACN,
DS26LS33CN, DS26LS33MJ or DS26LS33ACN
See NS Package Number J16A, M16A or N16A
For Complete Military 883 Specifications,
See RETS Data Sheet.
TL/F/5255–2
Top View
Order Number DS26LS32MJ/883, DS26LS32MW/883,
DS26LS33MJ/883, DS26LS33MW/883
See NS Package Number J16A or W16A
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation
TL/F/5255
RRD-B30M36/Printed in U. S. A.
http://www.national.com