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TMS427409A Dataheets PDF



Part Number TMS427409A
Manufacturers Texas Instruments
Logo Texas Instruments
Description DYNAMIC RANDOM-ACCESS MEMORIES
Datasheet TMS427409A DatasheetTMS427409A Datasheet (PDF)

TMS416409A, TMS417409A, TMS426409A, TMS427409A 4194304 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEMORIES SMKS893B – AUGUST 1996 – REVISED APRIL 1997 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. D Organization . . . 4 194304 × 4 D Single Power Supply (5 V or 3.3 V) D Performance Ranges: ’41x409A-50 ’41x409A-60 ACCESS ACCESS ACCESS TIME TIME TIME .

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TMS416409A, TMS417409A, TMS426409A, TMS427409A 4194304 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEMORIES SMKS893B – AUGUST 1996 – REVISED APRIL 1997 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. D Organization . . . 4 194304 × 4 D Single Power Supply (5 V or 3.3 V) D Performance Ranges: ’41x409A-50 ’41x409A-60 ACCESS ACCESS ACCESS TIME TIME TIME tRAC MAX tCAC MAX tAA MAX 50 ns 13 ns 25 ns 60 ns 15 ns 30 ns EDO CYCLE tHPC MIN 20 ns 25 ns ’41x409A-70 ’42x409A-50 70 ns 50 ns 18 ns 13 ns 35 ns 25 ns 30 ns 20 ns ’42x409A-60 60 ns 15 ns 30 ns 25 ns ’42x409A-70 70 ns 18 ns 35 ns 30 ns D Extended-Data-Out (EDO) Operation D CAS-Before-RAS ( CBR) Refresh D Low Power Dissipation D 3-State Unlatched Output D 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) D Operating Free-Air Temperature Range 0°C to 70°C description 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. DJ/DGA PACKAGES ( TOP VIEW ) VCC DQ1 DQ2 W RAS A11† 1 2 3 4 5 6 26 VSS 25 DQ4 24 DQ3 23 CAS 22 OE 21 A9 A10 A0 A1 A2 A3 VCC 8 9 10 11 12 13 19 A8 18 A7 17 A6 16 A5 15 A4 14 VSS 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 DEVICE TMS416409A TMS417409A TMS426409A TMS427409A AVAILABLE OPTIONS POWER SUPPLY SELF REFRESH, BATTERY BACKUP 5V – 5V – 3.3 V – 3.3 V – REFRESH CYCLES 4 096 in 64 ms 2 048 in 32 ms 4 096 in 64 ms 2 048 in 32 ms 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. 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 ©.


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