INDUSTRIALTEMPERATURERANGE

74FCT521AT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

1

Feb.11.20

INDUSTRIAL TEMPERATURE RANGE

FEATURES:

• A and C grades

• Low input and output leakage ≤≤≤≤≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility:

–VOH = 3.3V (typ.)

–VOL = 0.3V (typ.)

• High Drive outputs (-15mA IOH, 48mA IOL)

• Meets or exceeds JEDEC standard 18 specifications

• Power off disable outputs permit "live insertion"

• Available in SOIC and QSOP packages

FUNCTIONAL BLOCK DIAGRAM

74FCT521AT/CT

FAST CMOS 8-BIT

IDENTITY COMPARATOR

DESCRIPTION:

The IDT74FCT521T is an 8-bit identity comparator built using an

advanced dual metal CMOS technology. These devices compare two

words of up to eight bits each and provide a low output when the two words

match bit for bit. The expansion input IA = B also serves as an active low

enable input.

A0

B0

A1

B1

A2

B2

A3

B3

A4

B4

A5

B5

A6

B6

A7

B7

IA=B

OA=B

2

3

4

5

6

7

8

9

11

12

13

14

15

16

17

18

1

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