Datasheet > TM497GU8

TM497GU8

更新时间： 2022-03-17 19:37:40

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德州仪器 - TI		/
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描述
4194304-WORD BY 8-BIT DYNAMIC RAM MODULE

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TM497GU8 数据手册

TM497GU8

4194304-WORD BY 8-BIT

DYNAMIC RAM MODULE

SMMS498A– APRIL 1994 – REVISED JUNE 1995

Organization . . . 4194304 × 8

U SINGLE-IN-LINE PACKAGE

(TOP VIEW)

Single 5-V Power Supply (±10% Tolerance)

30-Pin Single-In-Line Memory Module

(SIMM) for Use With Sockets

Utilizes Two 16-Megabit Dynamic RAMs in

Plastic Small-Outline J-Lead (SOJ)

Packages

CAS

DQ1

Long Refresh Period

32 ms (2048 Cycles)

DQ2

All Inputs, Outputs, Clocks Fully TTL

Compatible

DQ3 10

A4 11

3-State Output

A5 12

DQ4 13

A6 14

A7 15

DQ5 16

A8 17

A9 18

A10 19

DQ6 20

Performance Ranges:

ACCESS ACCESS ACCESS READ OR

TIME

WRITE

CYCLE

(MIN)

110 ns

130 ns

150 ns

RAC

CAC

(MAX)

60 ns

70 ns

80 ns

(MAX)

30 ns

35 ns

40 ns

(MAX)

15 ns

18 ns

20 ns

’497GU8-60

’497GU8-70

’497GU8-80

Common CAS Control for Eight Common

Data-In and Data-Out Lines

DQ7 23

NC 24

DQ8 25

NC 26

RAS 27

NC 28

NC 29

Low Power Dissipation

Operating Free-Air Temperature Range

0°C to 70°C

Enhanced Page-Mode Operation With

CAS-Before-RAS (CBR), RAS-Only, and

Hidden Refresh

description

The TM497GU8 is

4M-byte dynamic

PIN NOMENCLATURE

random-access memory module organized as

4194304× 8bitsina30-pinleadlesssingle-in-line

memory module (SIMM).

A0–A10

CAS

Address Inputs

Column-Address Strobe

DQ1–DQ8

Data In/Data Out

No Internal Connection

Row-Address Strobe

5-V Supply

The SIMM is composed of two TMS417400DJ,

4194304 × 4-bit dynamic RAMs in 24/26-lead

plastic small-outline J-lead (SOJ) packages

mounted on a substrate with decoupling capaci-

tors.

RAS

Ground

Write Enable

The TM497GU8 is available in the U single-sided,

leadless module for use with sockets and is

characterized for operation from 0°C to 70°C.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443

12 3 4 5 6 7

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