MC74LCX257_05 Datasheet, PDF(2/8 Page) ON Semiconductor – Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)

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MC74LCX257_05 Datasheet, PDF (2/8 Pages) ON Semiconductor – Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)

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MC74LCX257

VCC OE I0c I1c Zc I0d I1d Zd

16 15 14 13 12 11 10 9

12345678

S I0a I1a Za I0b I1b Zb GND

Figure 1. Pinout: 16âLead Plastic Package

(Top View)

I0a 2

I1a 3

I0b 5

I1b 6

I0c 14

I1c 13

I0d 11

I1d 10

OE 15

PIN NAMES

Pins

Function

l0n

Source 0 Data Inputs

l1n

Source 1 Data Inputs

Output Enable Input

Select Input

Outputs

Figure 2. Logic Diagram

TRUTH TABLE

Inputs

l0n

l1n

Outputs

H = High Voltage Level

L = Low Voltage Level

X = High or Low Voltage Level and Transitions are Acceptable

Z = High Impedance State

For ICC reasons, DO NOT FLOAT Inputs

4 Za

7 Zb

12 Zc

9 Zd

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