SN74125 BUFFERS Datasheet

SN74125 Datasheet, PDF, Equivalent


Part Number

SN74125

Description

QUADRUPLE BUS BUFFERS

Manufacture

etcTI

Total Page 24 Pages
Datasheet
Download SN74125 Datasheet


SN74125
The SN54125, SN54126, SN74125,
SN74126, and SN54LS126A are
obsolete and are no longer supplied.
SN54125, SN54126, SN54LS125A, SN54LS126A,
SN74125, SN74126, SN74LS125A, SN74LS126A
QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
SDLS044A – DECEMBER 1983 – REVISED MARCH 2002
D Quad Bus Buffers
D 3-State Outputs
D Separate Control for Each Channel
description
These bus buffers feature three-state outputs
that, when enabled, have the low impedance
characteristics of a TTL output with additional
drive capability at high logic levels to permit
driving heavily loaded bus lines without external
pullup resistors. When disabled, both output
transistors are turned off, presenting a
high-impedance state to the bus so the output will
act neither as a significant load nor as a driver. The
’125 and ’LS125A devices’ outputs are disabled
when G is high. The ’126 and ’LS126A devices’
outputs are disabled when G is low.
SN54125, SN54126, SN54LS125A,
SN54LS126A . . . J OR W PACKAGE
SN74125, SN74126 . . . N PACKAGE
SN74LS125A, SN74LS126A . . . D, N, OR NS PACKAGE
(TOP VIEW)
1G, 1G*
1A
1Y
2G, 2G*
2A
2Y
GND
1
2
3
4
5
6
7
14 VCC
13 4G, 4G*
12 4A
11 4Y
10 3G, 3G*
9 3A
8 3Y
*G on ’125 and ’LS125A devices;
G on 126 and ’LS126A devices
SN54LS125A, SN54LS126A . . . FK PACKAGE
(TOP VIEW)
1Y
NC
2G, 2G*
NC
2A
3 2 1 20 19
4 18
5 17
6 16
7 15
8 14
9 10 11 12 13
4A
NC
4Y
NC
3G, 3G*
*G on ’125 and ’LS125A devices;
G on 126 and ’LS126A devices
NC – No internal connection
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright 2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
1

SN74125
SN54125, SN54126, SN54LS125A, SN54LS126A,
SN74125, SN74126, SN74LS125A, SN74LS126A
QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
SDLS044A DECEMBER 1983 REVISED MARCH 2002
The SN54125, SN54126, SN74125,
SN74126, and SN54LS126A are
obsolete and are no longer supplied.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube
Tube
SN74LS125AN
SN74LS126AN
SN74LS125AN
SN74LS126AN
0°C to 70°C
SOIC D
Tube
Tape and reel
Tube
Tape and reel
SN74LS125AD
SN74LS125ADR
SN74LS126AD
SN74LS126ADR
LS125A
LS126A
SOP NS
Tape and reel
Tape and reel
SN74LS125ANSR
SN74LS126ANSR
74LS125A
74LS126A
55°C to 125°C
CDIP J
CFP W
Tube
Tube
Tube
SN54LS125AJ
SNJ54LS125AJ
SNJ54LS125AW
SN54LS125AJ
SNJ54LS125AJ
SNJ54LS125AW
LCCC FK Tube
SNJ54LS125AFK
SNJ54LS125AFK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
logic diagram (each gate)
’125, ’LS125A
G
AY
’126, ’LS126A
G
AY
Y=A
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied. SN54125, SN54126, SN5 4LS125A, SN54LS126A, SN74125, SN74126, SN74LS125A, SN74LS126A QUADRUPLE BUS BU FFERS WITH 3-STATE OUTPUTS SDLS044A – DECEMBER 1983 – REVISED MARCH 2002 D Quad Bus Buffers D 3-State Outputs D Separate Control for Each Channel descr iption These bus buffers feature three- state outputs that, when enabled, have the low impedance characteristics of a TTL output with additional drive capabi lity at high logic levels to permit dri ving heavily loaded bus lines without e xternal pullup resistors. When disabled , both output transistors are turned of f, presenting a high-impedance state to the bus so the output will act neither as a significant load nor as a driver. The ’125 and ’LS125A devices’ ou tputs are disabled when G is high. The ’126 and ’LS126A devices’ outputs are disabled when G is low. SN54125, SN54126, SN54LS125A, SN54LS126A . . . J OR W PACKAGE SN74125, SN74126 . . . N P.
Keywords SN74125, datasheet, pdf, etcTI, QUADRUPLE, BUS, BUFFERS, N74125, 74125, 4125, SN7412, SN741, SN74, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




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