74HC125; 74HCT125
Quad buffer/line driver; 3-state
Rev. 6 — 1 December 2015
Product data sheet
1. General description
The 74HC125; 74HCT125 is a quad buffer/line driver with 3-state outputs controlled by
the output enable inputs (nOE). A HIGH on nOE causes the outputs to assume a high
impedance OFF-state. Inputs include clamp diodes. This enables the use of current
limiting resistors to interface inputs to voltages in excess of VCC.
2. Features and benefits
Complies with JEDEC standard no. 7A
Input levels:
The 74HC125: CMOS levels
The 74HCT125: TTL levels
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from 40 C to +85 C and from 40 C to +125 C
3. Ordering information
Table 1.
Ordering information
Type number
Package
Temperature range
74HC125D
Name
Description
Version
40 C to +125 C
SO14
plastic small outline package; 14 leads; body width
3.9 mm
SOT108-1
40 C to +125 C
SSOP14
plastic shrink small outline package; 14 leads; body
width 5.3 mm
SOT337-1
40 C to +125 C
TSSOP14
plastic thin shrink small outline package; 14 leads; body SOT402-1
width 4.4 mm
74HCT125D
74HC125DB
74HCT125DB
74HC125PW
74HCT125PW
74HC125; 74HCT125
NXP Semiconductors
Quad buffer/line driver; 3-state
5.2 Pin description
Table 2.
Pin description
Symbol
Pin
Description
1OE, 2OE, 3OE, 4OE
1, 4, 10, 13
output enable input (active LOW)
1A, 2A, 3A, 4A
2, 5, 9, 12
data input
1Y, 2Y, 3Y, 4Y
3, 6, 8, 11
data output
GND
7
ground (0 V)
VCC
14
supply voltage
6. Functional description
Table 3.
Function table[1]
Control
Input
Output
nOE
nA
nY
L
L
[1]
H
X
H
L
H
Z
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
VCC
supply voltage
0.5
+7
V
IIK
input clamping current
VI < 0.5 V or VI > VCC + 0.5 V
[1]
-
20
mA
IOK
output clamping current
VO < 0.5 V or VO > VCC + 0.5 V
[1]
-
20
mA
IO
output current
VO = 0.5 V to (VCC + 0.5 V)
-
35
mA
ICC
supply current
-
+70
mA
IGND
ground current
-
70
mA
Tstg
storage temperature
65
+150
C
-
500
mW
total power dissipation
Ptot
Conditions
SO14 and (T)SSOP14 packages
Min
[2]
[1]
Unit
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2]
Max
For SO14 package: Ptot derates linearly with 8 mW/K above 70 C.
For (T)SSOP14 packages: Ptot derates linearly with 5.5 mW/K above 60 C.
74HC_HCT125
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 1 December 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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