74HC125PW datasheet(3/17 Pages) NXP

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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

Functional description

[1]

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

Limiting values

[1]

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

[2]

For DIP14 package: Ptot derates linearly with 12 mW/K above 70 C.

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.

Table 2.

Pin description

Symbol

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

ground (0 V)

VCC

supply voltage

Table 3.

Function table[1]

Control

Input

Output

nOE

LLL

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

VCC

supply voltage

0.5

IIK

input clamping current

VI < 0.5 V or VI >VCC +0.5 V

[1] -

20

IOK

output clamping current

VO < 0.5 V or VO >VCC +0.5 V

[1] -

20

output current

VO = 0.5 V to (VCC +0.5 V)

35

ICC

supply current

+70

IGND

ground current

70

Tstg

storage temperature

65

+150

C

Ptot

total power dissipation

[2]

DIP14 package

750

SO14 and (T)SSOP14

packages

500

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