IDT71B74

BiCMOS STATIC RAM 64K (8K x 8-BIT) CACHE-TAG RAM

COMMERCIAL TEMPERATURE RANGE

14.1

2

PIN CONFIGURATION

TRUTH TABLE

(1, 2)

WE

WE CS

CS OE

OE RESET

RESET MATCH I/O

Function

X

X

X

L

HIGH

—

Reset all bits to LOW

X

H

X

H

HIGH

Hi-Z

Deselect chip

H

L

H

H

LOW

No MATCH

H

L

H

H

HIGH

MATCH

H

L

L

H

HIGH

Read

L

L

X

H

HIGH

Write

NOTES:

3013 tbl 01

ABSOLUTE MAXIMUM RATINGS

(1)

Symbol

Rating

Com’l.

Unit

(2)

Terminal Voltage with

–0.5 to +7.0

V

Respect to GND

Operating Temperature

0 to +70

°C

Temperature Under Bias

–55 to +125

°C

Storage Temperature

–55 to +125

°C

Power Dissipation

1.0

W

DC Output Current

50

mA

NOTES:

3013 tbl 03

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.

DIP/SOJ

TOP VIEW

3013 drw 02

5

6

7

8

9

10

11

12

1

2

3

4

24

23

22

21

20

19

18

17

P28-2

SO28-5

13

14

28

27

26

25

WE

OE

CS

16

15

GND

RESET

MATCH

CAPACITANCE

°C, f = 1.0MHz, SOJ Package)

Symbol

Parameter

(1)

Conditions

Max. Unit

Input Capacitance

6

pF

Output Capacitance

7

pF

NOTE:

3013 tbl 04

1. This parameter is determined by device characterization, but is not

production tested.

PIN DESCRIPTIONS

Pin Names

Description

Address

Data Input/Output

CS

Chip Select

RESET

Memory Reset

MATCH

Data/Memory Match (Open Drain)

WE

Write Enable

OE

Output Enable

GND

Ground

Power

3013 tbl 02