PDM41257
256K Static RAM
256K x 1-Bit
Features
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Description
The PDM41257 is a high-performance CMOS static
RAM organized as 262,144 x 1 bit. Writing to this
device is accomplished when the write enable (WE)
and the chip enable (CE) inputs are both LOW.
Reading is accomplished when WE remains HIGH
and CE goes LOW.
The PDM41257 operates from a single +5V power
supply and all the inputs and outputs are fully TTL-
compatible. The PDM41257 comes in two versions,
the standard power version PDM41257SA and a low
power version the PDM41257LA. The two versions
are functionally the same and only differ in their
power consumption.
The PDM41257 is available in a 24-pin 300-mil
plastic SOJ for surface mount applications.
High-speed access times
Com鈥檒: 7, 8, 10, 12 and 15 ns
Industrial: 8, 10, 12 and 15 ns
Low power operation (typical)
- PDM41257SA
Active: 400 mW
Standby: 150 mW
- PDM41257LA
Active: 350 mW
Standby: 25 mW
Single +5V (鹵10%) power supply
TTL compatible inputs and outputs
Packages
Plastic SOJ (300 mil) - SO
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Functional Block Diagram
A0
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A17
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Decoder
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Memory
Matrix
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D
OUT
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IN
CE
WE
Column I/O
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Rev. 2.2 - 4/27/98
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英文版
256K Static RAM 32K x 8-Bit
ETC
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英文版
256K Static RAM 32K x 8-Bit
ETC [ETC]
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英文版
x18 Fast Synchronous SRAM
ETC
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英文版
x18 Fast Synchronous SRAM
ETC
-
英文版
x18 Fast Synchronous SRAM
ETC
-
英文版
x18 Fast Synchronous SRAM
ETC
-
英文版
x18 Fast Synchronous SRAM
ETC
-
英文版
x18 Fast Synchronous SRAM
ETC
-
英文版
x18 Fast Synchronous SRAM
ETC
-
英文版
x18 Fast Synchronous SRAM
ETC
-
英文版
x9 Fast Synchronous SRAM
ETC
-
英文版
x9 Fast Synchronous SRAM
ETC
-
英文版
256K Static RAM 32K x 8-Bit
ETC
-
英文版
256K Static RAM 32K x 8-Bit
ETC [ETC]
-
英文版
256K Static RAM 32K x 8-Bit
ETC
-
英文版
256K Static RAM 32K x 8-Bit
ETC [ETC]
-
英文版
x8 SRAM
ETC
-
英文版
x8 SRAM
ETC
-
英文版
256K Static RAM 32K x 8-Bit
ETC
-
英文版
256K Static RAM 32K x 8-Bit
ETC [ETC]
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