Texas Instruments SN54HC125J, SN74HC125D, SN74HC125DBLE, SN74HC125DBR, SN74HC125DR Datasheet
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SN54HC125, SN74HC125
QUADRUPLE BUS BUFFER GATES
WITH 3-STATE OUTPUTS
SCLS104B – MARCH 1984 – REVISED MA Y 1997
D
High-Current 3-State Outputs Interface
Directly With System Bus or Can Drive up
to 15 LSTTL Loads
D
Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), and Ceramic Flat (W) Packages,
Ceramic Chip Carriers (FK), and Standard
Plastic (N) and Ceramic (J) 300-mil DIPs
description
These quadruple bus buffer gates feature
independent line drivers with 3-state outputs.
Each output is disabled when the associated
output-enable (OE
The SN54HC125 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74HC125 is characterized for
operation from –40°C to 85°C.
) input is high.
FUNCTION TABLE
(each buffer)
INPUTS
OE A
L H H
L LL
H X Z
OUTPUT
Y
SN54HC125 ...J OR W PACKAGE
SN74HC125 . . . D, DB, OR N PACKAGE
SN54HC125 . . . FK PACKAGE
1Y
NC
2OE
NC
2A
NC – No internal connection
(TOP VIEW)
1OE
1
1A
2
1Y
3
2OE
4
2A
5
6
2Y
GND
7
(TOP VIEW)
1A
3212019
4
5
6
7
8
910111213
2Y
1OE
GND
NC
NC
14
13
12
11
10
9
8
V
3Y
CC
V
CC
4OE
4A
4Y
3OE
3A
3Y
4OE
18
17
16
15
14
3A
4A
NC
4Y
NC
3OE
logic symbol
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, DB, J, N, and W packages.
†
1
1OE
2
1A
4
2OE
5
2A
10
3OE
9
3A
13
4OE
12
4A
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.
EN
3
1Y
6
2Y
8
3Y
11
4Y
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 1997, Texas Instruments Incorporated
1
SN54HC125, SN74HC125
UNIT
QUADRUPLE BUS BUFFER GATES
WITH 3-STATE OUTPUTS
SCLS104B – MARCH 1984 – REVISED MA Y 1997
logic diagram (positive logic)
1
1OE
2
1A 1Y
4
2OE
5
2A 2Y
Pin numbers shown are for the D, DB, J, N, and W packages.
3
6
absolute maximum ratings over operating free-air temperature range
10
3OE
9
3A 3Y
13
4OE
12
4A 4Y
8
11
†
Supply voltage range, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
(VO < 0 or VO > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OK
Continuous output current, IO (VO = 0 to VCC) ±35 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through VCC or GND ±70 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
(see Note 2): D package 127°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
JA
DB package 158°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package 78°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
recommended operating conditions
V
V
V
V
V
t
t
T
Supply voltage 2 5 6 2 5 6 V
CC
High-level input voltage
IH
Low-level input voltage
IL
Input voltage 0 V
I
Output voltage 0 V
O
Input transition (rise and fall) time
Operating free-air temperature –55 125 –40 85 °C
A
SN54HC125 SN74HC125
MIN NOM MAX MIN NOM MAX
VCC = 2 V 1.5 1.5
VCC = 4.5 V
VCC = 6 V 4.2 4.2
VCC = 2 V 0 0.5 0 0.5
VCC = 4.5 V
VCC = 6 V 0 1.8 0 1.8
VCC = 2 V 0 1000 0 1000
VCC = 4.5 V
VCC = 6 V 0 400 0 400
3.15 3.15
0 1.35 0 1.35
CC
CC
0 500 0 500
0 V
0 V
CC
CC
V
V
V
V
ns
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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