BQ2204A, X4 sram nonvolatile controller unit, qty 5

BQ2204A, X4 sram nonvolatile controller unit, qty 5

X4 SRAM Nonvolatile Controller Unit
BQ2204APN, SRAM Nonvolatile Controller IC for 4 SRAM Banks, 16 Pin DIP, Quantity 5, Benchmarq/Texas Instruments
The CMOS BQ2204A SRAM Non-volatile Controller Unit provides all necessary functions for converting up to four banks of standard CMOS SRAM into nonvolatile read/write memory.
A precision comparator monitors the 5V VCC input for an out-of-tolerance condi-tion. When out-of-tolerance is detected, the four conditioned chip-enable outputs are forced inactive to write-protect up to four banks of SRAM.
During a power failure, the external SRAMs are switched from the VCC supply to one of two 3V backup sup-plies. On a subsequent power-up, the SRAMs are write-protected until a power-valid condition exists.
During power-valid operation, a two-input decoder transparently selects one of up to four banks of SRAM.
* Power monitoring and switching for 3-volt battery-backup applications
* 2-input decoder for control of up to 4 banks of SRAM
* 3-volt primary cell inputs
* Less than 10ns chip-enable propagation delay
* 5% or 10% supply operation
Click here to see the datasheet.
Quantity 5 ....... New Parts !!!!!
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