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TMS427409ADGA-60 Datasheet

  • TMS427409ADGA-60

  • 4194304 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEM...

  • 518.74KB

  • 37頁(yè)

  • NSC

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TMS416409A, TMS417409A, TMS426409A, TMS427409A
4194304 BY 4-BIT EXTENDED DATA OUT
DYNAMIC RANDOM-ACCESS MEMORIES
SMKS893B 鈥?AUGUST 1996 鈥?REVISED APRIL 1997
D
D
D
This data sheet is applicable to all
TMS41x409As and TMS42x409As symbolized
by Revision 鈥淏鈥? Revision 鈥淓鈥? and subsequent
revisions as described in the device
symbolization section.
Organization . . . 4 194 304
脳
4
Single Power Supply (5 V or 3.3 V)
Performance Ranges:
ACCESS ACCESS ACCESS
TIME
TIME
TIME
tRAC
tCAC
tAA
MAX
MAX
MAX
50 ns
13 ns
25 ns
60 ns
15 ns
30 ns
70 ns
18 ns
35 ns
50 ns
13 ns
25 ns
60 ns
15 ns
30 ns
70 ns
18 ns
35 ns
EDO
CYCLE
tHPC
MIN
20 ns
25 ns
30 ns
20 ns
25 ns
30 ns
DJ/DGA PACKAGES
( TOP VIEW )
V
CC
DQ1
DQ2
W
RAS
A11
鈥?/div>
A10
A0
A1
A2
A3
V
CC
1
2
3
4
5
6
8
9
10
11
12
13
26
25
24
23
22
21
19
18
17
16
15
14
V
SS
DQ4
DQ3
CAS
OE
A9
A8
A7
A6
A5
A4
V
SS
D
D
D
D
D
鈥?1x409A-50
鈥?1x409A-60
鈥?1x409A-70
鈥?2x409A-50
鈥?2x409A-60
鈥?2x409A-70
D
Extended-Data-Out (EDO) Operation
CAS-Before-RAS ( CBR) Refresh
Low Power Dissipation
3-State Unlatched Output
High-Reliability Plastic 24 / 26-Lead
300-Mil-Wide Surface-Mount Small-Outline
J-Lead (SOJ) Package (DJ Suffix) and
24/26-Lead 300-Mil-Wide Surface-Mount
Thin Small-Outline Package (TSOP)
(DGA Suffix)
Operating Free-Air Temperature Range
0擄C to 70擄C
PIN NOMENCLATURE
A0 鈥?A11鈥?/div>
DQ1 鈥?DQ4
CAS
NC
OE
RAS
VCC
VSS
W
Address Inputs
Data In / Data Out
Column-Address Strobe
No Internal Connection
Output Enable
Row-Address Strobe
5-V or 3.3-V Supply鈥?/div>
Ground
Write Enable
鈥?A11 is NC for TMS417409A and TMS427409A.
鈥?See Available Options Table
AVAILABLE OPTIONS
description
DEVICE
The TMS41x409A and TMS42x409A series are
16 777 216-bit dynamic random-access memory
(DRAM) devices organized as 4 194 304 words of
four bits each.
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.
POWER
SUPPLY
5V
5V
3.3 V
3.3 V
SELF
REFRESH,
BATTERY
BACKUP
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
REFRESH
CYCLES
4 096 in 64 ms
2 048 in 32 ms
4 096 in 64 ms
2 048 in 32 ms
TMS416409A
TMS417409A
TMS426409A
TMS427409A
The TMS416409A and TMS417409A are offered in a 24 / 26-lead plastic surface-mount SOJ package
(DJ suffix). The TMS426409A and TMS427409A are offered in a 24/26-lead plastic surface-mount SOJ
package (DJ suffix) and a 24 / 26-lead plastic surface-mount TSOP (DGA suffix). These packages are designed
for operation from 0擄C to 70擄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.
Copyright
漏
1997, Texas Instruments Incorporated
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
鈥?/div>
HOUSTON, TEXAS 77251鈥?443
1

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