74HC_HCT253_3

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Product data sheet

Rev. 03 — 22 April 2010

4 of 17

NXP Semiconductors

74HC253; 74HCT253

Dual 4-input multiplexer; 3-state

6.2 Pin description

7.

Functional description

[1]

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

8.

Limiting values

Table 2.

Pin description

Symbol

Pin

Description

1OE, 2OE

1, 15

output enable inputs (active LOW)

S0, S1

14, 2

data select inputs

1I0, 1I1, 1I2, 1I3

6, 5, 4, 3

data inputs source 1

1Y

7

multiplexer output source 1

GND

8

ground (0 V)

2Y

9

multiplexer output source 2

2I0, 2I1, 2I2, 2I3

10, 11, 12, 13

data inputs source 2

16

supply voltage

Table 3.

Function table[1]

select Inputs

data inputs

output enable

output

S0

S1

nI0

nI1

nI2

nI3

nOE

nY

X

X

XXXXH

Z

L

L

L

XXXL

L

L

L

H

XXXL

H

H

L

XL

XXL

L

H

L

XH

XXL

H

L

H

XXL

XL

L

L

H

XXH

XL

H

H

H

XXXL

L

L

H

H

XXXH

L

H

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

+7.0

V

input clamping current

[1] -

±20

mA

output clamping current

[1] -

±50

mA

output current

−0.5 V < V

-

±35

mA

supply current

-

70

mA

ground current

−70

-

mA

storage temperature

−65

+150

°C