NSC DS26LS33ACN

DS26LS32C/DS26LS32M/DS26LS32AC/DS26LS33C/
DS26LS33M/DS26LS33AC Quad Differential Line
Receivers
General Description
Features
The DS26LS32 and DS26LS32A are quad differential line
receivers designed to meet the RS-422, RS-423 and Federal Standards 1020 and 1030 for balanced and unbalanced
digital data transmission.
The DS26LS32 and DS26LS32A have an input sensitivity of
200 mV over the input voltage range of g 7V and the
DS26LS33 and DS26LS33A have an input sensitivity of
500 mV over the input voltage range of g 15V.
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.
Each version provides an enable and disable function common to all four receivers and features TRI-STATEÉ 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.
Y
Y
Y
Y
Y
Y
Y
High differential or common-mode input voltage ranges
of g 7V on the DS26LS32 and DS26LS32A and g 15V
on the DS26LS33 and DS26LS33A
g 0.2V sensitivity over the input voltage range on the
DS26LS32 and DS26LS32A, g 0.5V sensitivity on the
DS26LS33 and DS26LS33A
DS26LS32 and DS26LS32A meet all requirements of
RS-422 and RS-423
6k minimum input impedance
100 mV input hysteresis on the DS26LS32 and
DS26LS32A, 200 mV on the DS26LS33 and
DS26LS33A
Operation from a single 5V supply
TRI-STATE outputs, with choice of complementary output enables for receiving directly onto a data bus
Logic Diagram
TL/F/5255 – 1
Connection Diagram
Truth Table
Dual-In-Line Package
ENABLE
ENABLE
Input
Output
0
1
X
Hi-Z
VID t VTH (Max)
1
VID s VTH (Min)
0
See
Note Below
HI-Z e TRI-STATE
Note: Input conditions may be any combination not defined for ENABLE
and ENABLE.
TL/F/5255 – 2
Top View
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.
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.
C1996 National Semiconductor Corporation
TL/F/5255
RRD-B30M36/Printed in U. S. A.
http://www.national.com
DS26LS32C/DS26LS32M/DS26LS32AC/DS26LS33C/DS26LS33M/DS26LS33AC
Quad Differential Line Receivers
January 1996
Absolute Maximum Ratings
(Note 1)
Storage Temperature Range
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
Common-Mode Range
b 65§ C to a 165§ C
Lead Temperature (Soldering, 4 seconds)
Operating Conditions
7V
g 25V
Differential Input Voltage
Enable Voltage
Output Sink Current
Maximum Power Dissipation* at 25§ C
Cavity Package
Molded Dip Package
SO Package DS26LS32
DS26LS32A
260§ C
Supply Voltage, (VCC)
DS26LS32M, DS26LS33M
(MIL)
DS26LS32C, DS26LS33C
DS26LS32AC, DS26LS33AC
(COML)
Temperature, (TA)
DS26LS32M, DS26LS33M
(MIL)
DS26LS32C, DS26LS33C
DS26LS32AC, DS26LS33AC
(COML)
g 25V
7V
50 mA
1433 mW
1362 mW
1002 mW
1051 mW
*Derate cavity package 9.6 mW/§ C above 25§ C; derate molded DIP package
10.9 mW/§ C above 25§ C.
Derate SO Package 8.01 mW/§ C for DS26LS32
8.41 mW/§ C for DS26LS32A
Min
Max
Units
4.5
5.5
V
4.75
5.25
V
b 55
a 125
§C
0
a 70
§C
Electrical Characteristics over the operating temperature range unless otherwise specified (Notes 2, 3 and 4)
Symbol
VTH
Parameter
Min
Typ
Max
Units
DS26LS32, DS26LS32A, b7V s VCM s a 7V
Conditions
b 0.2
g 0.07
0.2
V
DS26LS33, DS26LS33A, b15V s VCM a 15V
b 0.5
g 0.14
0.5
6.0
8.5
Differential Input
Voltage
VOUT e VOH
or VOL
RIN
Input Resistance
b 15V s VCM s a 15V (One Input AC GND)
IIN
Input Current (Under
Test)
VIN e 15V, Other Input b15V s VIN s a 15V
VOH
VOL
Output High Voltage
Output Low Voltage
VIN e b15V, Other Input b15V s VIN s a 15V
VCC e MIN, DVIN e 1V,
VENABLE e 0.8V, IOH e b440 mA
VCC e Min, DVIN e b1V,
VENABLE e 0.8V
VIL
Enable Low Voltage
VIH
Enable High Voltage
VI
Enable Clamp
Voltage
VCC e Min, IIN e b18 mA
IO
OFF-State (High
Impedance) Output
Current
VCC e Max
IIL
Enable Low Current
IIH
Enable High Current
ISC
Output Short-Circuit
Current
VO e 0V, VCC e Max, DVIN e 1V
ICC
Power Supply
Current
VCC e Max, All VIN e GND,
Outputs Disabled
II
Input High Current
VIN e 5.5V
VHYST
Input Hysteresis
TA e 25§ C, VCC e 5V,
VCM e 0V
V
kX
2.3
mA
b 2.8
mA
Commercial
2.7
4.2
V
Military
2.5
4.2
V
IOL e 4 mA
0.4
V
IOL e 8 mA
0.45
V
0.8
V
2.0
V
b 1.5
V
VO e 2.4V
20
mA
VO e 0.4V
b 20
mA
VIN e 0.4V
b 0.36
mA
VIN e 2.7V
20
mA
b 85
mA
b 15
DS26LS32, DS26LS32A
52
70
mA
DS26LS33, DS26LS33A
57
80
mA
100
mA
DS26LS32, DS26S32A
100
mV
DS26LS33, DS26LS33A
200
mV
Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device
should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device operation.
Note 2: All currents into device pins are shown as positive, all currents out of device pins are shown as negative, all voltages are referenced to ground, unless
otherwise specified. All values shown as max or min are so classified on absolute value basis.
Note 3: All typical values are VCC e 5V, TA e 25§ C.
Note 4: Only one output at a time should be shorted.
http://www.national.com
2
Switching Characteristics VCC e 5V, TA e 25§ C
Symbol
Parameter
DS26LS32/DS26LS33
Conditions
Min
Typ
Max
DS26LS32A/DS26LS33A
Min
Typ
Max
Units
tPLH
tPHL
Input to Output
CL e 15 pF
17
17
25
25
23
23
35
35
ns
ns
tLZ
tHZ
ENABLE to Output
CL e 5 pF
20
15
30
22
15
20
30
25
ns
ns
tZL
tZH
ENABLE to Output
CL e 15 pF
15
15
22
22
14
15
22
22
ns
ns
AC Test Circuit and Switching Time Waveforms
Load Test Circuit for TRI-STATE Outputs
TL/F/5255 – 3
Propagation Delay (Notes 1 and 3)
Enable and Disable Times (Notes 2 and 3)
TL/F/5255 – 4
Note 1: Diagram shown for ENABLE low.
Note 2: S1 and S2 of load circuit are closed except where shown.
Note 3: Pulse generator for all pulses: Rate e 1.0 MHz; ZO e 50X; tr s 6 ns; tf s 6.0 ns.
TL/F/5255 – 5
Typical Applications
Two-Wire Balanced InterfaceÐRS-422
TL/F/5255 – 6
Single Wire with Driver Ground ReferenceÐRS-423
TL/F/5255 – 7
3
http://www.national.com
Physical Dimensions inches (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number DS26LS32MJ, DS26LS33MJ, DS26LS32MJ/883 or DS26LS33MJ/883
NS Package Number J16A
Small Outline Package (M)
Order Number DS26LS32CM or DS26LS32ACM
NS Package Number M16A
http://www.national.com
4
Physical Dimensions inches (millimeters) (Continued)
Molded Dual-In-Line Package (N)
Order Number DS26LS32CN, DS26LS32ACN, DS26LS33CN or DS26LS33ACN
NS Package Number N16A
5
http://www.national.com
DS26LS32C/DS26LS32M/DS26LS32AC/DS26LS33C/DS26LS33M/DS26LS33AC
Quad Differential Line Receivers
Physical Dimensions inches (millimeters) (Continued)
16 Lead Ceramic Flatpak (W)
Order Number DS26LS32MW/883 or DS26LS33MW/883
NS Package Number W16A
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and whose
failure to perform, when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.
National Semiconductor
Corporation
1111 West Bardin Road
Arlington, TX 76017
Tel: 1(800) 272-9959
Fax: 1(800) 737-7018
http://www.national.com
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
National Semiconductor
Europe
Fax: a49 (0) 180-530 85 86
Email: europe.support @ nsc.com
Deutsch Tel: a49 (0) 180-530 85 85
English Tel: a49 (0) 180-532 78 32
Fran3ais Tel: a49 (0) 180-532 93 58
Italiano Tel: a49 (0) 180-534 16 80
National Semiconductor
Hong Kong Ltd.
13th Floor, Straight Block,
Ocean Centre, 5 Canton Rd.
Tsimshatsui, Kowloon
Hong Kong
Tel: (852) 2737-1600
Fax: (852) 2736-9960
National Semiconductor
Japan Ltd.
Tel: 81-043-299-2308
Fax: 81-043-299-2408
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.