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Part: TMS426409A
Category:
Memory
-> DRAM
Description: ti TMS426409A, 4 194 304-WORD BY 4-BIT Extended Data Out DRAMs
Company: Texas Instruments, Inc.
Datasheet: Download TMS426409A datasheet File size : 1495 kB
Request For quote: Find where to buy TMS426409A
Datasheet text preview:
TMS416409A, TMS417409A, TMS426409A, TMS427409A 4 194 304 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEMORIES
SMKS893B AUGUST 1996 REVISED APRIL 1997
D D D
This data sheet is applicable to all TMS41x409As and TMS42x409As symbolized by Revision "B", Revision "E", and subsequent revisions as described in the device symbolization section. Organization . . . 4 194 304 × 4 Single Power Supply (5 V or 3.3 V) Performance Ranges:
ACCESS ACCESS ACCESS TIME TIME TIME tR A C 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 )
VC C DQ1 DQ2 W RAS A11 A10 A0 A1 A2 A3 VC C
1 2 3 4 5 6 8 9 10 11 12 13
26 25 24 23 22 21 19 18 17 16 15 14
VSS DQ4 DQ3 CAS OE A9 A8 A7 A6 A5 A4 VSS
D D D D D
'41x409A-50 '41x409A-60 '41x409A-70 '42x409A-50 '42x409A-60 '42x409A-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°C to 70°C
PIN NOMENCLATURE A0 A11 DQ1 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 Ground Write Enable
A11 is NC for TMS417409A and TMS427409A. 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
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°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.
Copyright © 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
· HOUSTON, TEXAS 772511443
1
TMS416409A, TMS417409A, TMS426409A, TMS427409A 4 194 304 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEMORIES
SMKS893B AUGUST 1996 REVISED APRIL 1997
logic symbol (TMS416409A and TMS426409A)
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 9 10 11 12 15 16 17 18 19 21 8 6 RAM 4096 K × 4 20D10/21D0
A
0 4 194 303
20D19/21D9 20D20 20D21 C20 [ROW] G23/[REFRESH ROW] 24 [PWR DWN] C21[COLUMN] G24 & 23,21D G25 A,22D 26 23C22 24,25 EN
RAS
5
CAS W OE DQ1 DQ2 DQ3 DQ4
23 4 22 2 3 24 25
A,Z26
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 647-12.
2
POST OFFICE BOX 1443
· HOUSTON, TEXAS 772511443
TMS416409A, TMS417409A, TMS426409A, TMS427409A 4 194 304 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEMORIES
SMKS893B AUGUST 1996 REVISED APRIL 1997
logic symbol (TMS417409A and TMS427409A)
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 9 10 11 12 15 16 17 18 19 21 8 20D21/21D10 C20 [ROW] G23/[REFRESH ROW] 24 [PWR DWN] C21[COLUMN] G24 & 23,21D G25 A,22D 26 23C22 24,25 EN RAM 4096 K × 4 20D11/21D0
A
0 4 194 303
RAS
5
CAS W OE DQ1 DQ2 DQ3 DQ4
23 4 22 2 3 24 25
A,Z26
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 647-12.
POST OFFICE BOX 1443
· HOUSTON, TEXAS 772511443
3
Others parts begin by tm
TM-1 TM-2 TM-3 TM-4 TM-5 TM-6 TM-7 TM-8 TM-9 TM-10 TM-11 TM-12 TM-13 TM-14 TM-15 TM-16 TM-17 TM-18 TM-19 TM-20 TM-21 TM-22 TM-23 TM-24 TM-25 TM-26 TM-27 TM-28 TM-29 TM-30
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