TRUTH TABLE

1A

1B

1C

1D

1E

1F

1Y

HH

H

X

X

X

L

X

XXH

H

H

L

ALL OTHER COMBINATIONS

H

PIN DESCRIPTION

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, 2Y

Data Outputs

7

GND

Ground (0V)

14

Positive Supply Voltage

IEC LOGIC SYMBOL

LOGIC DIAGRAM

TRUTH TABLE

2A

2B

2C

2D

2Y

HHX

X

L

XXH

H

L

ALL OTHER COMBINATIONS

H

X = DON’T CARE

ABSOLUTE MAXIMUM RATINGS

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 Source Sink Current Per Output Pin

± 25

mA

± 50

mA

Power Dissipation

500 (*)

mW

Storage Temperature

-65 to +150

Lead Temperature (10 sec)

300

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

(*) 500 mW:

M54/M74HC51

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