Integrated Device Technology Inc IDT71V42812Y, IDT71V42815Y, IDT71V42820Y Datasheet

Integrated Device Technology, Inc.

COMMERCIAL TEMPERATURE RANGE JULY 1996

1996 Integrated Device Technology, Inc. 3623/-

FEATURES:

• 1M x 4 advanced high-speed CMOS Static RAM

• JEDEC Center Power / GND pinout for reduced noise

• Equal access and cycle times
— 12/15/20ns

• Single 3.3V power supply

• One Chip Select plus one Output Enable pin

• Bidirectional data inputs and outputs directly

TTL-compatible

• Low power consumption via chip deselect

• Available in 32-pin, 400 mil plastic SOJ package

DESCRIPTION:

The IDT71V428 is a 4,194,304-bit high-speed Static RAM
organized as 1M x 4. It is fabricated using IDT’s high­perfomance, high-reliability CMOS technology. This state-of­the-art technology, combined with innovative circuit design
techniques, provides a cost-effective solution for high-speed
memory needs.

The IDT71V428 has an output enable pin which operates
as fast as 6ns, with address access times as fast as 12ns. All
bidirectional inputs and outputs of the IDT71V428 are TTL­compatible and operation is from a single 3.3V supply. Fully
static asynchronous circuitry is used, requiring no clocks or
refresh for operation.

The IDT71V428 is packaged in a 32-pin, 400mil Plastic
SOJ.

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

FUNCTIONAL BLOCK DIAGRAM

ADDRESS
DECODER

4,194,304-BIT

MEMORY ARRAY

I/O CONTROL

•

•

•

A0

A19

4

4

I/O0 – I/O3

¥

4

•

•

•

CONTROL
LOGIC

WE#

OE#

CS#

3623 drw 01

3.3V CMOS STATIC RAM
4 MEG (1M x 4-BIT)

ADVANCE

INFORMATION

IDT71V428

10.3 1

10.3 2

IDT71V428

3.3V CMOS STATIC RAM 4 MEG (1M x 4-BIT) COMMERCIAL TEMPERATURE RANGE

PIN DESCRIPTION

A0 – A19 Address Inputs Input

CS

Chip Select Input

WE

Write Enable Input

OE

Output Enable Input

I/O

0 - I/O3 Data Input/Output I/O

V

DD 3.3V Power Power

V

SS Ground Gnd

PIN CONFIGURATION

SOJ

TOP VIEW

ORDERING INFORMATION

S

PowerXXSpeed

XXX

Package

Y

400-mil SOJ (S032-3)

12
15
20

71V428
Device

Type

IDT

Speed in nanoseconds

3623 drw 03

A18

A3
A2
A1
A0

CE

I/O

0

VDD

VSS

I/O 1

WE

A

17

A16
A15
A14
A19

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

A

4

A5
A6
A7
A8

OE

I/O

3

VSS

VDD
I/O 2

A9
A10
A11
A12
A13
NC

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17

SO32-3

3623 drw 02

3623 tbl 01