SN751730_16 Datasheet, PDF (1/19 Pages) Texas Instruments – TRIPLE LINE DRIVER/RECEIVER

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FEATURES
1
•2 Meets or Exceeds the Requirements of IBM^®
360/370 Input/Output Interface Specification
for 4.5-Mb/s Operation
• Single 5-V Supply
• Uncommitted Emitter-Follower Output
Structure for Party-Line Operation
• Driver Output Short-Circuit Protection
• Driver Input/Receiver Output Compatible With
TTL
• Receiver Input Resistance . . . 7.4 kΩ to 20 kΩ
• Ratio Specification for Propagation Delay
Time, Low to High/High to Low
DESCRIPTION/
ORDERING INFORMATION
The SN751730 triple line driver/receiver is specifically
designed to meet the input/output interface
specifications for IBM System 360/370. It also is
compatible with standard TTL logic and supply
voltage levels.
The low-impedance emitter-follower driver outputs of
the SN751730 drive terminated lines, such as coaxial
cable or twisted pair. Having the outputs uncommitted
allows wired-OR logic to be performed in party-line
applications. Output short-circuit protection is
provided by an internal clamping network that turns
on when the output voltage drops below
approximately 2.5 V.
An open line affects the receiver input as does a
low-level input voltage.
All the driver inputs and receiver outputs are in
conventional TTL configuration and the gating can be
used during power-up and power-down sequences to
ensure that no noise is introduced to the line by
pulling either DE1 or DE2 to a low level.
SN751730
TRIPLE LINE DRIVER/RECEIVER
SLLS062E – MAY 1990 – REVISED AUGUST 2007
D OR N PACKAGE
(TOP VIEW)
DE1 1
RI1 2
RO1 3
RI2 4
RO2 5
RI3 6
RO3 7
GND 8
16 V_CC
15 DO1
14 DI1
13 DO2
12 DI2
11 DO3
10 DI3
9 DE2
DW PACKAGE
(TOP VIEW)
DE1 1
RI1 2
N.C. 3
RO1 4
RI2 5
RO2 6
RI3 7
N.C. 8
RO3 9
GND 10
20 VCC
19 DO1
18 N.C.
17 DI1
16 DO2
15 DI2
14 DO3
13 N.C.
12 DI3
11 DE2
NS PACKAGE
(TOP VIEW)
DE1 1
RI1 2
RO1 3
RI2 4
N.C. 5
N.C. 6
RO2 7
RI3 8
RO3 ⁹
GND ¹⁰
20 V_CC
19 DO1
18 DI1
17 DO2
16 N.C.
15 _N.C.
14 _DI2
13 _DO3
12 _DI3
11 _DE2
N.C. – No internal connection
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
IBM is a registered trademark of International Business Machines Corporation.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1990–2007, Texas Instruments Incorporated