TMS417409A - National Semiconductor

TMS417409A 4194304 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEMORIES

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..

Features

wer 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 .