DS3695TJ NSC [National Semiconductor], DS3695TJ Datasheet

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DS3695TJ

Manufacturer Part Number
DS3695TJ
Description
Multipoint RS485/RS422 Transceivers/Repeaters
Manufacturer
NSC [National Semiconductor]
Datasheet

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C 1996 National Semiconductor Corporation
DS3695 DS3695T DS3696 DS3696T DS3697 DS3698
Multipoint RS485 RS422 Transceivers Repeaters
General Description
The DS3695 DS3696 DS3697 and DS3698 are high speed
differential TRI-STATE
designed to meet the requirements of EIA standard RS485
with extended common mode range (
multipoint data transmission
The driver and receiver outputs feature TRI-STATE capabili-
ty The driver outputs remain in TRI-STATE over the entire
common mode range of
cause excessive power dissipation within the device trigger
a thermal shutdown circuit which forces the driver outputs
into the high impedance state The DS3696 and DS3698
provide an output pin TS (thermal shutdown) which reports
the occurrence of the thermal shutdown of the device This
is an ‘‘open collector’’ pin with an internal 10 k
resistor This allows the line fault outputs of several devices
to be wire OR-ed
Both AC and DC specifications are guaranteed over the 0 C
to 70 C temperature and 4 75V to 5 25V supply voltage
range
Connection and Logic Diagrams
TRI-STATE is a registered trademark of National Semiconductor Corporation
Note TS pin was LF (Line Fault) in previous datasheets and reports the occurrence of a thermal shutdown of the device
Top View
Top View
bus line transceivers repeaters
a
12V to
TL F 10408
Order Number DS3695N DS3696N DS3697N DS3698N
DS3695TN DS3696TN DS3695TJ or DS3696TJ
b
a
7V Bus faults that
See NS Package Number J08A or N08E
12V to
TL F 10408 – 13
TL F 10408– 1
b
7V) for
pull-up
Features
Y
Y
Y
Y
Y
Y
Y
Y
Meets EIA standard RS485 for multipoint bus transmis-
sion and is compatible with RS-422
15 ns driver propagation delays with 2 ns skew (typical)
Single
b
ground difference between devices on the bus
Thermal shutdown protection
High impedance to bus with driver in TRI-STATE or
with power off over the entire common mode range al-
lows the unused devices on the bus to be powered
down
Combined impedance of a driver output and receiver in-
put is less than one RS485 unit load allowing up to 32
transceivers on the bus
70 mV typical receiver hysteresis
7V to
a
RRD-B30M76 Printed in U S A
a
5V supply
12V bus common mode range permits
Top View
Top View
TL F 10408 – 14
http
www national com
March 1996
TL F 10408– 12
g
7V

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DS3695TJ Summary of contents

Page 1

... Top View Top View Order Number DS3695N DS3696N DS3697N DS3698N DS3695TN DS3696TN DS3695TJ or DS3696TJ See NS Package Number J08A or N08E Note TS pin was LF (Line Fault) in previous datasheets and reports the occurrence of a thermal shutdown of the device TRI-STATE is a registered trademark of National Semiconductor Corporation ...

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 V CC Control Input Voltages Driver Input Voltage Driver Output Voltages Receiver Input Voltages (DS3695 DS3696) ...

Page 3

Electrical Characteristics 75V V 5 25V unless otherwise specified (Notes Symbol Parameter I Driver Short-Circuit Output Current OSD I Receiver Short-Circuit Output Current OSR Note 1 ...

Page 4

AC Test Circuits and Switching Waveforms FIGURE 1 Driver V and V OD Note Differential input voltage may be realized by grounding RI and pulsing RI between FIGURE 3 Receiver Input-to-Output Propagation Delay Timing FIGURE 4 Receiver Enable Disable Propagation ...

Page 5

AC Test Circuits and Switching Waveforms Note Unless otherwise specified the switches are closed FIGURE 5 Driver Propagation Delay and Transition Time Test Circuits Note t and t are measured to the respective 50% points t PLH PHL FIGURE 6 ...

Page 6

Function Tables Inputs Inputs Inputs Shutdown E RI- ...

Page 7

Typical Performance Characteristics Driver Temperature OH Driver Driver Single-Ended Propagation Delay vs Temperature Driver Transition Time Driver V Driver ...

Page 8

Typical Performance Characteristics Supply Current vs Temperature Driver Short Circuit Current vs Temperature Receiver Temperature Receiver Differential Propagation Delay http www national com (Continued) Supply Current vs Power Driver I Supply ...

Page 9

... Input Current vs Temperature Receiver Inverting Input Current vs Power Supply Voltage Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead Ceramic Dual-In-Line Package (J) Order Number DS3695TJ or DS3696TJ (Continued) Receiver Non-Inverting Input Current vs Power Supply Voltage Hysteresis and Differential Transition Voltage vs Temperature NS Package Number J08A ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 8-Lead Molded Dual-In-Line Package (N) Order Number DS3695N DS3696N DS3697N DS3698N DS3695TN or DS3696TN LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR ...

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