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TMS416400A Datasheet(PDF) 1 Page - Texas Instruments

Part No. TMS416400A
Description  4194304 BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORIES
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
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TMS416400A Datasheet(HTML) 1 Page - Texas Instruments

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TMS416400A, TMS417400A
4194304 BY 4-BIT
DYNAMIC RANDOM-ACCESS MEMORIES
SMKS889B – AUGUST 1996 – REVISED OCTOBER 1997
1
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
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...4194304 × 4
D Single 5-V Power Supply (±10% Tolerance)
D 2048-Cycle Refresh in 32 ms for
TMS417400A
D 4096-Cycle Refresh in 64 ms for
TMS416400A
D Performance Ranges:
ACCESS ACCESS ACCESS READ OR
TIME
TIME
TIME
WRITE
tRAC
tCAC
tAA
CYCLE
MAX
MAX
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
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.
PIN NOMENCLATURE
A[0: 11]†
Address Inputs
CAS
Column-Address Strobe
DQ[1:4]
Data In / Data Out
OE
Output Enable
NC
No Internal Connection
RAS
Row-Address Strobe
VCC
5-V Supply
VSS
Ground
W
Write Enable
DJ PACKAGE
( TOP VIEW )
VCC
DQ1
DQ2
W
RAS
A0
A1
A2
A3
VCC
VSS
DQ4
DQ3
CAS
OE
A7
A6
A5
A4
VSS
26
25
24
23
22
18
17
16
15
14
1
2
3
4
5
9
10
11
12
13
A11
A9
21
6
A10
A8
19
8
† A11 is NC for TMS417400A
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


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