PIN DESCRIPTION

PIN No

SYMBOL

NAME AND FUNCTION

1, 2, 5, 6

A2, B2,

C2, D2

Word 2 Data Inputs

3, 4, 7, 9

A1, B1,

C1, D1

Word 1 Data Inputs

12 to 15

QA to QD

Outputs

10

WORD

SELECT

Word Select Input

11

CLOCK

Clock Input (HIGH to

LOW, Edge-triggered)

8

GND

Ground (0V)

16

Positive Supply Voltage

IEC LOGIC SYMBOL

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:

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Value

Unit

Supply Voltage

2 to 6

V

Input Voltage

V

Output Voltage

V

Operating Temperature: M54HC Series

M74HC Series

-55 to +125

-40 to +85

Input Rise and Fall Time

0 to 1000

ns

0 to 500

0 to 400

M54/M74HC298

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