TMS416400A Datasheet, PDF (1/27 Pages) Texas Instruments – 4194304 BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORIES

This data sheet is applicable to all
TMS41x400As symbolized by Revision “B”,
Revision “E” and subsequent revisions as
described in the device symbolization section.
D Organization . . . 4 194304 × 4
D Single 5-V Power Supply (±10% Tolerance)
D 2 048-Cycle Refresh in 32 ms for
TMS417400A
D 4 096-Cycle Refresh in 64 ms for
TMS416400A
D Performance Ranges:
ACCESS ACCESS ACCESS READ OR
TIME TIME TIME WRITE
tRAC
MAX
tCAC
MAX
tAA CYCLE
MAX MIN
’41x400A-50
50 ns 13 ns
25 ns 90 ns
’41x400A-60
60 ns 15 ns
30 ns 110 ns
’41x400A-70
70 ns 18 ns
35 ns 130 ns
D Enhanced Page-Mode Operation With
CAS-Before-RAS ( CBR) Refresh
D 3-State Unlatched Output
D Low Power Dissipation
D High-Reliability Plastic 24 / 26-Lead
300-Mil-Wide Surface-Mount Small-Outline
J-Lead (SOJ) Package (DJ Suffix)
D Ambient Temperature Range:
0°C to 70°C
TMS416400A, TMS417400A
4194304 BY 4-BIT
DYNAMIC RANDOM-ACCESS MEMORIES
SMKS889B – AUGUST 1996 – REVISED OCTOBER 1997
DJ PACKAGE
( TOP VIEW )
V_CC 1
DQ1 2
DQ2 3
W4
RAS 5
A11^† 6
26 V_SS
25 DQ4
24 DQ3
23 CAS
22 OE
21 A9
A10 8
A0 9
A1 10
A2 11
A3 12
V_CC 13
19 A8
18 A7
17 A6
16 A5
15 A4
14 V_SS
PIN NOMENCLATURE
A[0: 11]†
CAS
DQ[1:4]
OE
NC
RAS
VCC
VSS
W
Address Inputs
Column-Address Strobe
Data In / Data Out
Output Enable
No Internal Connection
Row-Address Strobe
5-V Supply
Ground
Write Enable
† _{A11 is NC for TMS417400A}
description
The TMS41x400A is a set of 16 777 216-bit dynamic random-access memory (DRAMs) devices organized as
4 194 304 words of 4 bits each. The TMS41x400A employs state-of-the-art technology for high performance,
reliability, and low power.
These devices feature maximum RAS access times of 50-, 60-, and 70 ns. All address and data-in lines are
latched on-chip to simplify system design. Data out is unlatched to allow greater system flexibility.
The TMS416400A and TMS417400A are offered in a 24 / 26-lead plastic surface-mount SOJ package
(DJ suffix). This package is designed for operation from 0°C to 70°C.
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.
Copyright © 1997, Texas Instruments Incorporated
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443
1