6.04

9

IDT7134SA/LA

HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM

MILITARY AND COMMERCIAL TEMPERATURE RANGES

ORDERING INFORMATION

Left or Right Port

(1)

R/

W

W

W

W

W

CE

CE

CE

CE

CE

OE

OE

OE

OE

OE

Function

X

H

X

Z

Port Disabled and in Power

XH

X

Z

L

L

X

Data on port written into

memory

H

L

L

Data in memory output on port

X

X

H

Z

High impedance outputs

2720 tbl 11

NOTES:

2. "H" = HIGH, "L" = LOW, "X" = Don’t Care, and "Z" = High-impedance

FUNCTIONAL DESCRIPTION

The IDT7134 provides two ports with separate control,

address, and I/O pins that permit independent access for

reads or writes to any location in memory. These devices have

an automatic power down feature controlled by

CE. The CE

controls on-chip power down circuitry that permits the

respective port to go into standby mode when not selected

(

CE high). When a port is enabled, access to the entire

memory array is permitted. Each port has its own Output

Enable control (

OE). In the read mode, the port’s OE turns on

the output drivers when set LOW. Non-contention READ/

WRITE conditions are illustrated in the table below.

2720 drw 13

IDT

XXXX

A

999

A

A

Device Type

Power

Speed

Package

Process/

Temperature

Range

Blank

B

P

C

J

L48

F

20

25

35

45

55

70

LA

SA

7134

Commercial (0

°C to +70°C)

Military (–55

°C to +125°C)

Compliant to MIL-STD-883, Class B

48-pin Plastic DIP (P48-1)

48-pin Ceramic DIP (C48-2)

52-pin PLCC (J52-1)

48-pin LCC (L48-1)

48-pin Ceramic Flatpack (F48-1)

Speed in nanoseconds

Low Power

Standard Power

32K (4K x 8-Bit) Dual-Port RAM

Commercial Only