INPUT AND OUTPUT EQUIVALENT CIRCUIT

TRUTH TABLE

INPUT

OUT PUT

GAn

Yn

LL

L

LH

H

HX

Z

X: ”H” or ”L”

Z: High impedance

PIN DESCRIPTION

PIN No

SYMBOL

NAME AND F UNCTIO N

1

1G

Output Enable Input

2, 4, 6, 8

1A1 to 1A4

Data Inputs

9, 7, 5, 3

2Y1 to 2Y4

Data Outputs

11, 13, 15, 17

2A1 to 2A4

Data Inputs

18, 16, 14, 12

1Y1 to 1Y4

Data Outputs

19

2G

Output Enabel Input

10

GND

Ground (0V)

20

Positive Supply Voltage

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Val ue

Uni t

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

± 50

mA

± 400

mA

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.

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Value

Un it

Supply Voltage

2 to 6

V

Input Voltage

V

Output Voltage

V

Operating Temperature:

-40 to +85

dt/dv

8

ns/V

74AC244

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