SN74F125
QUADRUPLE BUS BUFFER GATE
WITH 3-STATE OUTPUTS
SDFS016A – D3211, JANUARY 1989 – REVISED OCTOBER 1993
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• Package Options Include Plastic
Small-Outline Packages and Standard
Plastic 300-mil DIPs
description
The SN74F125 features independent line drivers
with 3-state outputs. Each output is disabled when
the associated output enable (OE
The SN74F125 is characterized for operation from
0°C to 70°C.
logic symbol
†
) input is high.
FUNCTION TABLE
(each buffer)
INPUTS
OE A
L H H
L LL
HXZ
OUTPUT
Y
logic diagram (positive logic)
D OR N PACKAGE
(TOP VIEW)
1OE
2OE
GND
1A
1Y
2A
2Y
1
2
3
4
5
6
7
14
13
12
11
10
V
CC
4OE
4A
4Y
3OE
9
3A
8
3Y
1
1OE
2
1A
4
2OE
5
2A
10
3OE
9
3A
13
4OE
12
4A
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
EN
1
3
6
8
11
1Y
2Y
3Y
4Y
1OE
2OE
3OE
4OE
1
23
1A 1Y
4
56
2A 2Y
10
98
3A 3Y
13
12 11
4A 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 1993, Texas Instruments Incorporated
2–1
SN74F125
V
V
QUADRUPLE BUS BUFFER GATE
WITH 3-STATE OUTPUTS
SDFS016A – D3211, JANUARY 1989 – REVISED OCTOBER 1993
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
Input voltage range, V
Input current range –30 mA to 5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the disabled or power-off state –0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state –0.5 V to V
Current into any output in the low state 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
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.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
(see Note 1) –1.2 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
recommended operating conditions
MIN NOM MAX UNIT
V
V
V
I
I
I
T
CC
IH
IL
IK
OH
OL
A
Supply voltage 4.5 5 5.5 V
High-level input voltage 2 V
Low-level input voltage 0.8 V
Input clamp current –18 mA
High-level output current –15 mA
Low-level output current 64 mA
Operating free-air temperature 0 70 °C
†
CC
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP‡MAX UNIT
V
IK
V
OH
V
OL
I
I
I
IH
I
IL
I
OZH
I
OZL
§
I
OS
I
CCH
I
CCL
I
‡
All typical values are at VCC = 5 V, TA = 25°C.
§
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
CCZ
VCC = 4.5 V, II = –18 mA –1.2 V
= 4.5
CC
VCC = 4.75 V, IOH = – 3 mA 2.7
VCC = 4.5 V, IOL = 64 mA 0.4 0.55 V
VCC = 0, VI = 7 V 0.1 mA
VCC = 5.5 V, VI = 2.7 V 20 µA
VCC = 5.5 V, VI = 0.5 V –20 µA
VCC = 5.5 V, VO = 2.7 V 50 µA
VCC = 5.5 V, VO = 0.5 V –50 µA
VCC = 5.5 V, VO = 0 –100 –225 mA
VCC = 5.5 V, Outputs open 17 24 mA
VCC = 5.5 V, Outputs open 28 40 mA
VCC = 5.5 V, Outputs open 25 35 mA
IOH = – 3 mA 2.4 3.3
IOH = – 15 mA 2 3.1
V
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
QUADRUPLE BUS BUFFER GATE
A
Y
ns
OE
Y
ns
OE
Y
ns
WITH 3-STATE OUTPUTS
SDFS016A – D3211, JANUARY 1989 – REVISED OCTOBER 1993
switching characteristics (see Note 2)
VCC = 5 V,
PARAMETER
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
†
NOTE 2: Load circuits and waveforms are shown in Section 1.
PLZ
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
FROM
(INPUT)
TO
(OUTPUT)
CL = 50 pF,
RL = 500 Ω,
TA = 25°C
MIN TYP MAX MIN MAX
1.2 3.6 6 1.2 6.5
2.2 5.1 7.5 2.2 8
2.7 5.1 7.5 2.7 8.5
3.2 5.6 8 3.2 9
1 3.1 5 1 6
1 3.1 5.5 1 6
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX
SN74F125
UNIT
†
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
2–3
SN74F125
QUADRUPLE BUS BUFFER GATE
WITH 3-STATE OUTPUTS
SDFS016A – D3211, JANUARY 1989 – REVISED OCTOBER 1993
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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