DS3691N NSC [National Semiconductor], DS3691N Datasheet

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DS3691N

Manufacturer Part Number
DS3691N
Description
(RS-422/RS-423) Line Drivers with TRI-STATE Outputs
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 2004 National Semiconductor Corporation
DS1691A/DS3691
(RS-422/RS-423) Line Drivers with TRI-STATE
General Description
The DS1691A/DS3691 are low power Schottky TTL line
drivers designed to meet the requirements of EIA standards
RS-422 and RS-423. They feature 4 buffered outputs with
high source and sink current capability with internal short
circuit protection. A mode control input provides a choice of
operation either as 4 single-ended line drivers or 2 differen-
tial line drivers. A rise time control pin allows the use of an
external capacitor to slow the rise time for suppression of
near end crosstalk to other receivers in the cable. Rise time
capacitors are primarily intended for waveshaping output
signals in the single-ended driver mode. Multipoint applica-
tions in differential mode with waveshaping capacitors is not
allowed.
With the mode select pin low, the DS1691A/DS3691 are
dual-differential line drivers with TRI-STATE outputs. They
feature
mode and 0V output unbalance when operated with
supply.
Connection Diagrams
Ordering Information
TRI-STATE
®
±
is a registered trademark of National Semiconductor Corporation.
10V output common-mode range in TRI-STATE
Order Number
DS3691M
DS3691N
For Complete Military Product Specifications, refer to the appropriate SMD or MDS.
DS1691AJ/883
With Mode Select LOW
(RS-422 Connection)
Top View
DS005783
00578301
Package Type
Ceramic DIP
SO Package
±
Molded DIP
5V
Features
n Dual RS-422 line driver with mode pin low, or quad
n TRI-STATE outputs in RS-422 mode
n Short circuit protection for both source and sink outputs
n Outputs will not clamp line with power off or in
n 100Ω transmission line drive capability
n Low I
n Low current PNP inputs compatible with TTL, MOS and
n Pin compatible with AM26LS30
RS-423 line driver with mode pin high
TRI-STATE
CMOS
RS-422: I
RS-423: I
CC
and I
CC
CC
EE
With Mode Select HIGH
(RS-423 Connection)
= 9 mA/driver typ
= 4.5 mA/driver typ:
power consumption
I
NS Package Number
EE
Top View
= 2.5 mA/driver typ
M16A
N16E
J16A
®
Outputs
www.national.com
00578302
July 1998

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DS3691N Summary of contents

Page 1

... Connection Diagrams With Mode Select LOW (RS-422 Connection) Top View Ordering Information Order Number DS3691M DS3691N For Complete Military Product Specifications, refer to the appropriate SMD or MDS. DS1691AJ/883 TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation Features ...

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 Maximum Power Dissipation (Note 1) at 25˚C Cavity Package Molded DIP Package SO ...

Page 3

AC Electrical Characteristics T = 25˚C A Symbol Parameter RS-422 CONNECTION 5V, MODE SELECT = 0. Output Rise Time r t Output Fall Time f t Output Propagation Delay PDH t Output Propagation Delay PDL t ...

Page 4

AC Electrical Characteristics T = 25˚C A Symbol Parameter t Output Propagation Delay PDH t Output Propagation Delay PDL AC Test Circuits and Switching Time Waveforms www.national.com (Note 6) (Continued) Conditions R = 450Ω 500 pF ...

Page 5

AC Test Circuits and Switching Time Waveforms FIGURE 3. Rise Time Control for RS-423 00578309 FIGURE 4. TRI-STATE Delays 5 (Continued) 00578307 00578308 www.national.com 00578310 ...

Page 6

Switching Waveforms Truth Table Operation RS-422 RS-423 Typical Application Information www.national.com 00578311 FIGURE 5. Typical Output Voltage Inputs Mode A (D) B ( TRI-STATE ...

Page 7

Typical Application Information Differential Application with Rise Time Control *Note: Controlled edge allows longer stub lengths. Multiple Drivers are NOT allowed. (Continued) Fully Loaded RS-423 Interface Dual RS-423 Inverting Driver 7 00578315 00578316 00578317 www.national.com ...

Page 8

Typical Rise Time Control Characteristics (RS-423 Mode) www.national.com Rise Time vs External Capacitor 00578312 8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number DS1691AJ/883 NS Package Number J16A SO Package (M) Order Number DS3691M NS Package Number M16A 9 www.national.com ...

Page 10

... 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. inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number DS3691N NS Package Number N16E 2. A critical component is any component of a life ...

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