TM16ER72HP 16777216 BY 72BIT

TM16ER72LP 16777216 BY 72BIT

EXTENDEDDATAOUT BUFFERED DYNAMIC RAM MODULES

SMMS694 − AUGUST 1997

1

POST OFFICE BOX 1443

− TM16ER72HP-xx ...16 777 216

× 72 Bits

− TM16ER72LP-xx ...16 777 216

× 72 Bits

(

±10% Tolerance)

Module (DIMM) With Buffer for Use With

Socket

High-Speed (16M

×4-Bit) Dynamic RAMs

Surface-Mount Thin Small-Outline Package

(TSOP) (DGE Suffix)

Applications

− TM16ER72HP: 64 ms (4 096 Cycles)

− TM16ER72LP: 64 ms (8 192 Cycles)

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

Hidden Refresh

0

°C to 70°C

ACCESS

ACCESS ACCESS

EDO

TIME

TIME

TIME

CYCLE

tRAC

tCAC

tAA

tHPC

(MAX)

(MAX)

(MAX)

(MIN)

’16ER72xx-40

40 ns

11 ns

20 ns

16 ns

’16ER72xx-50

50 ns

13 ns

25 ns

20 ns

’16ER72xx-60

60 ns

15 ns

30 ns

25 ns

description

The TM16ER72HP is a 128M-byte, 168-pin, buffered dual-in-line memory module (DIMM). The DIMM is

composed of eighteen TMS465409, 16 777 216

× 4-bit 4K-refresh EDO dynamic random-access memories

(DRAMs), each in a 400-mil, 32-pin plastic thin small-outline package (TSOP) (DGE suffix), and two

SN74LVC162244 16-bit buffers, each in a 48-lead plastic TSOP package mounted on a substrate with

decoupling capacitors. See the TMS465409 data sheet (literature number SMKS895).

The TM16ER72LP is a 128M-byte, 168-pin, buffered DIMM. The DIMM is composed of eighteen TMS464409,

16 777 216

× 4-bit 8K-refresh EDO DRAMs, each in a 400-mil, 32-pin plastic TSOP (DGE suffix), and two

SN74LVC162244 16-bit buffers, each in a 48-lead plastic TSOP package mounted on a substrate with

decoupling capacitors. See the TMS465409 data sheet (literature number SMKS895).

These modules are intended for multimodule workstation / server applications where buffering is needed for

address and control signals. Two copies of address 0 (A0 and B0) are defined to allow maximum performance

for 4-byte applications that interleave between two 4-byte banks. A0 is common to the DRAMs used for

DQ0−DQ31, while B0 is common to the DRAMs used for DQ32−DQ63.

operation

The TM16ER72xP operates as eighteen TMS46x409s that are connected as shown in the TM16ER72xP

functional block diagram.

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.

Copyright

 1997, Texas Instruments Incorporated

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.