M74HC51

2/9

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

TRUTH TABLE

X : Don’t Care

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is

not implied

(*) 500mW at 65

PIN No

SYMBOL

NAME AND FUNCTION

1, 12, 13, 9,

10, 11

1A to 1F

Data Inputs

2, 3, 4, 5

2A to 2D

Data Inputs

8, 6

1Y to 2Y

Data Outputs

7

GND

Ground (0V)

14

Positive Supply Voltage

1A

1B

1C

1D

1E

1F

1Y

HH

HX

X

X

L

X

X

X

HHH

L

ALL OTHER COMBINATIONS

H

2A

2B

2C

2D

2Y

HH

X

X

L

XX

H

H

L

ALL OTHER COMBINATIONS

H

Symbol

Parameter

Value

Unit

Supply Voltage

-0.5 to +7

V

DC Input Voltage

V

DC Output Voltage

V

DC Input Diode Current

± 20

mA

DC Output Diode Current

± 20

mA

DC Output Current

± 25

mA

± 50

mA

Power Dissipation

500(*)

mW

Storage Temperature

-65 to +150

°C

Lead Temperature (10 sec)

300

°C