Integrated Device Technology, Inc.

MILITARY AND COMMERCIAL TEMPERATURE RANGES

APRIL 1995

©1995 Integrated Device Technology, Inc.

6.16

DSC-4210/4

DESCRIPTION:

The IDT54/74FCT521T/AT/BT/CT are 8-bit identity com-

parators built using an advanced dual metal CMOS technol-

ogy. 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

enable input.

IDT54/74FCT521T

IDT54/74FCT521AT

IDT54/74FCT521BT

IDT54/74FCT521CT

FAST CMOS 8-BIT

IDENTITY COMPARATOR

1

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

FEATURES:

• Std., A, B and C speed grades

• Low input and output leakage

≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility

• Meets or exceeds JEDEC standard 18 specifications

• Product available in Radiation Tolerant and Radiation

Enhanced versions

• Military product compliant to MIL-STD-883, Class B

and DESC listed (dual marked)

• Available in DIP, SOIC, SSOP, QSOP, CERPACK and

LCC packages

2572 drw 01

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

DIP/SOIC/SSOP/QSOP/CERPACK

TOP VIEW

P20-1

D20-1

SO20-2

SO20-7

SO20-8

&

E20-1

2572 drw 02

INDEX

LCC

TOP VIEW

3

2

20 19

1

4

5

6

7

8

18

17

16

15

14

9 101112 13

L20-2

2572 drw 03

PIN CONFIGURATIONS

FUNCTIONAL BLOCK DIAGRAM