TMS427809A

` Organization . . . 2097152 by 8 Bits
` Single Power Supply (5 V or 3.3 V)
` Performance Ranges: ACCESS ACCESS ACCESS EDO TIME TIME TIME CYCLE tRAC tCAC tAA tHPC MAX MAX MAX MIN '417809A-50 50 ns 13 ns 25 ns 20 ns '417809A-60 60 ns 15 ns 30 ns 25 ns '417809A-70 70 ns 18 ns 35 ns 30 ns '427809A/P-50 50 ns 13 ns 25 ns 20 ns '427809A/P-60 60 ns 15 ns 30 ns 25 ns '427809A/P-70 70 ns 18 ns 35 ns 30 ns
` Extended-Data-Out (EDO) Operation
` CAS-Before-RAS (CBR) Refresh
` Long Refresh Period and Self-Refresh Option (TMS427809AP)
` High-Impedance State Unlatched Output
` High-Reliability Plastic 28-Lead 400-Mil-Wide Surface-Mount Small-Outline J-Lead (SOJ) Package (DZ Suffix) and 28-Lead 400-Mil-Wide Surface-Mount Thin Small-Outline Package (TSOP) (DGC Suffix)
` Ambient Temperature Range 0°C to 70°C

Supply voltage range, VCC (TMS417809A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V to 7 V
Supply voltage range, VCC (TMS427809A, TMS427809AP) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 4.6 V
Voltage range on any pin (TMS417809A) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V to 7 V
Voltage range on any pin (TMS427809A, TMS427809AP) (see Note 1) . . . . . . . . . . . . . . . . . 0.5 V to 4.6 V
Short-circuit output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W
Ambient temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C


† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to VSS.

The TMS417809A and TMS427809A series are 16777216-bit dynamic random access memory (DRAM) devices organized as 2097152 words of 8 bits each. The TMS427809AP series is a low-power, self-refresh, 16777216-bit DRAM organized as 4194304 words of four bits.They employ TI state-of-the-art technology for high performance, reliability, and low power.

The TMS427809A 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 TMS417809A is offered in a 28-lead plastic surface-mount SOJ package (DZ suffix). The TMS427809A/P is offered in a 28-lead plastic surface-mount TSOP package (DGC suffix). These packages are designed for operation from 0°C to 70°C.