January 1996
DS26F32C/DS26F32M
Quad Differential Line Receiver
General Description
Features
Y
Military temperature range
The DS26F32 is a quad differential line receiver designed to
meet the requirements of EIA Standards RS-422 and RS-
423, and Federal Standards 1020 and 1030 for balanced
and unbalanced digital data transmission.
Y
g
Input voltage range of
7.0V (differential or common
g
mode) 0.2V sensitivity over the input voltage range
Meets all the requirements of EIA standards RS-422
and RS-423
Y
The DS26F32 offers improved performance due to the use
of state-of-the-art L-FAST bipolar technology. The L-FAST
technology allows for higher speeds and lower currents by
utilizing extremely short gate delay times. Thus, the
DS26F32 features lower power, extended temperature
range, and improved specifications.
Y
Y
Y
Y
High input impedance (18k typical)
30 mV input hysteresis
a
Operation from single 5.0V supply
Input pull-down resistor prevents output oscillation on
unused channels
The device features an input sensitivity of 200 mV over the
g
input common mode range of 7.0V. The DS26F32 pro-
vides an enable function common to all four receivers and
Y
Y
TRI-STATE outputs, with choice of complementary en-
ables, for receiving directly onto a data bus
Propagation delay 15 ns typical
TRI-STATE outputs with 8.0 mA sink capability. Also, a
É
fail-safe input/output relationship keeps the outputs high
when the inputs are open.
The DS26F32 offers optimum performance when used with
the DS26F31 Quad Differential Line Driver.
Connection Diagrams
16-Lead DIP
20-Lead Ceramic Leadless Chip Carrier
TL/F/9615–7
Function Table (Each Receiver)
Differential Inputs
Enables
Outputs
e
a
b
b
(V )
IN
V
ID
(V
)
E
E
OUT
IN
t
V
ID
0.2V
H
X
X
L
H
H
TL/F/9615–1
Top View
s
b
V
ID
0.2V
H
X
X
L
L
L
Order Number DS26F32CJ or DS26F32MJ
See NS Package Number J16A
X
L
H
Z
For Complete Military 883 Specifications,
see RETS Datasheet.
e
e
e
H
L
High Level
Low Level
Immaterial
Order Number DS26F32ME/883,
DS26F32MJ/883 or DS26F32MW/883
See NS Package Number E20A, J16A or W16A
X
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation
TL/F/9615
RRD-B30M36/Printed in U. S. A.
http://www.national.com