TM497FBK32, TM497FBK32S 4194304 BY 32-BIT

TM893GBK32, TM893GBK32S 8388608 BY 32-BIT

EXTENDED DATA OUT DYNAMIC RAM MODULES

SMMS668 – NOVEMBER 1996

1

POST OFFICE BOX 1443

– TM497FBK32/S: 4 194 304 x 32

– TM893GBK32/S: 8 388 608 x 32

(SIMM) for Use With Sockets

Dynamic Random-Access Memories

(DRAMs) in Plastic Small-Outline J-Lead

(SOJ) Packages

DRAMs in Plastic SOJ Packages

32 ms (2 048 Cycles)

TTL-Compatible

Data-In and Data-Out Lines in Four Blocks

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

Hidden Refresh

ACCESS ACCESS ACCESS

EDO

TIME

TIME

TIME

CYCLE

tRAC

tAA

tCAC

tHPC

(MAX)

(MAX)

(MAX)

(MIN)

’497FBK32/S-60 60 ns

30 ns

15 ns

25 ns

’497FBK32/S-70 70 ns

35 ns

18 ns

30 ns

’497FBK32/S-80 80 ns

40 ns

20 ns

35 ns

’893GBK32/S-60 60 ns

30 ns

15 ns

25 ns

’893GBK32/S-70 70 ns

35 ns

18 ns

30 ns

’893GBK32/S-80 80 ns

40 ns

20 ns

35 ns

0

°C to 70°C

TM497FBK32, TM893GBK32

Available: TM497FBK32S, TM893GBK32S

description

The TM497FBK32 is a 16M-byte dynamic random-access memory (DRAM) organized as four times

4 194 304

× 8 bits in a 72-pin leadless single-in-line memory module (SIMM). The SIMM is composed of eight

TMS417409DJ, 4 194 304

× 4-bit DRAMs, each in 24/26-lead plastic small-outline J-lead (SOJ) packages

mounted on a substrate with decoupling capacitors. The TMS417409DJ is described in the TMS416409,

TMS417409 data sheet (literature number SMKS884).

The TM497FBK32 SIMM is available in the single-sided BK leadless module for use with sockets. The

TM497FBK32 features RAS access times of 60 ns, 70 ns, and 80 ns. This device is characterized for operation

from 0

°C to 70°C.

The TM893GBK32/S is a 32M-byte DRAM organized as four times 8 388 608

× 8 bits in a 72-pin leadless SIMM.

The SIMM is composed of sixteen TMS417409DJ 4 194 304

× 4-bit DRAMs.

The TM893GBK32/S SIMM is available in the double-sided BK leadless module for use with sockets. The

TM893GBK32/S features RAS access times of 60 ns, 70 ns, and 80 ns. This device is characterized for

operation from 0

°C to 70°C.

operation

The TM497FBK32/S operates as eight TMS417409DJs connected as shown in Figure 1 and in Table 1. The

common I/O feature dictates the use of early write cycles to prevent contention on D and Q.

The TM893GBK32/S operates as sixteen TMS417409DJs connected as shown in Figure 2 and in Table 2. The

common I/O feature dictates the use of early write cycles to prevent contention on D and Q.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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.

† Part numbers in this data sheet are for the gold-tabbed version; the information applies to both gold-tabbed and solder-tabbed versions.

Copyright

© 1996, Texas Instruments Incorporated