INDUSTRIALTEMPERATURERANGE

2

74FCT521AT/CT

FASTCMOS8-BITIDENTITYCOMPARATOR

Feb.11.20

PIN CONFIGURATION

Symbol

Description

Max

Unit

VTERM(2) Terminal Voltage with Respect to GND

–0.5 to +7

V

VTERM(3) Terminal Voltage with Respect to GND

–0.5 to VCC+0.5

V

TSTG

Storage Temperature

–65 to +150

°C

IOUT

DC Output Current

–60 to +120

mA

ABSOLUTE MAXIMUM RATINGS(1)

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause

permanent damage to the device. This is a stress rating only and functional operation

of the device at these or any other conditions above those indicated in the operational

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect reliability. No terminal voltage may exceed

Vcc by +0.5V unless otherwise noted.

2. Inputs and Vcc terminals only.

3. Output and I/O terminals only.

Pin Names

Description

A0 - A7

Word A Inputs

B0 - B7

Word B Inputs

IA = B

Expansion or Enable Input (Active LOW)

OA = B

Identity Output (Active LOW)

PIN DESCRIPTION

Symbol

Parameter(1)

Conditions

Typ.

Max.

Unit

CIN

Input Capacitance

VIN = 0V

6

10

pF

COUT

Output Capacitance

VOUT = 0V

8

12

pF

CAPACITANCE (TA = +25°C, F = 1.0MHz)

NOTE:

1. This parameter is measured at characterization but not tested.

FUNCTION TABLE(1)

Inputs

Output

IA=B

A, B

OA = B

L

A = B*

L

LA

≠≠≠≠≠ BH

H

A = B*

H

HA

≠≠≠≠≠ BH

TOP VIEW

2

3

1

16

15

14

11

19

18

20

17

13

12

5

6

7

4

8

9

10

A1

A0

B0

VCC

B1

A3

A2

B2

B3

GND

OA=B

B6

B7

A7

A6

B4

B5

A5

A4

IA=B

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

*

A0 = B0, A1 = B1, A2 = B2, etc.

PackageType

PackageCode

Order Code

QSOP

PCG20

QG

SOIC

PSG20

SOG