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PDF TC55B4257J-15 Data sheet ( Hoja de datos )
| Número de pieza | TC55B4257J-15 | |
| Descripción | 256K x 4-Bit BiCMOS Static RAM | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TOSHIBA
1l:55B4257J-12/15/20
SILICON GATE BiCMOS
262,144 WORD x 4 BIT BiCMOS STATIC RAM
Description
The TC55B4257J is a 1,048,576 bit high speed BiCMOS static random access memory organized as 262,144 words by 4 bits
and operated from a single 5V supply. Toshiba's BiCMOS technology and advanced circuit design enable high speed operation.
The TC55B4257J features low power dissipation when the device is deselected using chip enable (CE), and has an output
enable input (OE) for fast memory access.
The TC55B4257J is suitable for use in applications where high speed is required such as cache memory, high speed storage, and
main memory. All inputs and outputs are TIL compatible.
The TC55B4257J is available in a 400mil width, 32-pin SOJ suitable for high density surface assembly.
Features
• Fast access time
- TC55B4257J-12 12ns (max.)
- TC55B4257J-15 15ns (max.)
- TC55B4257J-20 20ns (max.)
• Low power dissipation
- Operation:
- TC55B4257J-12 130mA (max.)
- TC55B4257J-15 130mA (max.)
- TC55B4257J-20 130mA (max.)
- Standby:
12mA (max.)
• Single 5V power supply: 5V±10%
• Fully static operation
• Inputs and outputs TIL compatible
• Output buffer control: OE
• Package:
- TC55B4257J : SOJ32-P-400A
Pin Names
AO -A17
1/01 - 1/04
CE
WE
OE
Voo
GND
NC
Address Inputs
Data Inputs/Outputs
Chip Enable Input
Write Enable Input
Output Enable Input
Power (+5V)
Ground
No Connection
Pin Connection (Top View)
TCSSB4257j
I/Ot
Voo
GND
1/02
WE
At7
Al6
A1S
A4
AS
A6
A7
AS
0:
1/04
GND
Voo
1/03
A9
A10
All
A12
An
NC
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
1 page  
Timing Waveforms
Read Cycle (2)
ADDRESS
Static RAM
Dour
Write Cycle 1 (5) (WE Controlled Write)
ADDRESS
twc
TC5584257J-12115/20
Dour
Write Cycle 2 (5) (CE Controlled Write)
ADDRESS
twc
tcw
Dour --------------~----~
TOSHIBA AMERICA ELECTRONIC COMPONENTS. INC.
8-113
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet TC55B4257J-15.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TC55B4257J-12 | 256K x 4-Bit BiCMOS Static RAM | Toshiba |
| TC55B4257J-15 | 256K x 4-Bit BiCMOS Static RAM | Toshiba |
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