74HC_HCT125

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Product data sheet

Rev. 4 — 10 January 2013

3 of 17

NXP Semiconductors

74HC125; 74HCT125

Quad buffer/line driver; 3-state

5.2 Pin description

6.

Functional description

[1]

H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.

7.

Limiting values

[1]

The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

[2]

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)

14

supply voltage

Table 3.

Function table[1]

Control

Input

Output

nOE

nA

nY

LLL

HH

HX

Z

Table 4.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol

Parameter

Conditions

Min

Max

Unit

supply voltage

0.5

+7

V

input clamping current

[1] -

20

mA

output clamping current

[1] -

20

mA

output current

-

35

mA

supply current

-

+70

mA

ground current

-

70

mA

storage temperature

65

+150

C

total power dissipation

[2]

DIP14 package

-

750

mW

SO14 and (T)SSOP14

packages

-

500

mW