TRUTH TABLE

AB

Y

LL

Z

LH

Z

HL

Z

HHL

Z = HIGH IMPEDANCE

PIN DESCRIPTION

PIN No

SYMBOL

NAME AND FUNCTION

1, 4, 9, 12

1A to 4A

Data Inputs

2, 5, 10, 13

1B to 4B

Data Inputs

3, 6, 8, 11

1Y to 4Y

Data Outputs

7

GND

Ground (0V)

14

Positive Supply Voltage

IEC LOGIC SYMBOL

CIRCUIT DIAGRAM

VCC = Pin 14

GND = Pin 7

open–drain outputs

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 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/M74HC03

2/9