MC74VHCT157AMG datasheet(2/7 Pages) ONSEMI

Part #	MC74VHCT157AMG

Description	Quad 2?묬hannel Multiplexer

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Manufacturer	ONSEMI [ON Semiconductor]

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MC74VHCT157A

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2

Figure 1. Pin Assignment

4

7

9

12

2

3

5

6

11

10

14

13

15

1

A0

B0

A1

B1

A2

B2

A3

B3

Y0

Y1

Y2

Y3

E

S

DATA

OUTPUTS

NIBBLE

INPUTS

3

E

S

A0

B0

A1

B1

A2

B2

2

5

6

11

10

14

13

12

9

7

4

Y0

MUX

Y1

Y2

Y3

EN

1

15

A3

B3

G1

1

Figure 2. Expanded Logic Diagram

13

14

15

16

9

10

11

12

5

4

3

2

1

8

7

6

S

Y0

B0

A0

Y1

B1

A1

GND

Y3

B3

A3

E

VCC

B2

A2

Y2

Figure 3. IEC Logic Symbol

This device contains protection circuitry to

guard against damage due to high static

voltages or electric fields. However, pre-

cautions must be taken to avoid applications

of any voltage higher than maximum rated

voltages to this high−impedance circuit. For

proper operation, Vin and Vout should be

constrained to the range GND

v (Vin or Vout)

v VCC.

Unused inputs must always be tied to an

appropriate logic voltage level (e.g., either

GND or VCC). Unused outputs must be left

open.

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