Specification	BQ2204APN

Controller Type	Nonvolatile SRAM
Mounting Type	Through Hole
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	0.3 in
Package / Case	16-DIP
Package / Case	7.62 mm
Supplier Device Package	16-PDIP
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

BQ2204A Series

SRAM Nonvolatile Controller IC for 4 SRAM Banks

Part	Controller Type	Supplier Device Package	Package / Case	Package / Case [x]	Package / Case [y]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Package / Case	Package / Case
Texas Instruments BQ2204ASN	Nonvolatile SRAM	16-SOIC	16-SOIC	0.154 in	3.9 mm	70 °C	0 °C	4.5 V	5.5 V	Surface Mount
Texas Instruments BQ2204ASN-NTRG4	Nonvolatile SRAM	16-SOIC	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	4.5 V	5.5 V	Surface Mount
Texas Instruments BQ2204ASNTR	Nonvolatile SRAM	16-SOIC	16-SOIC	0.154 in	3.9 mm	70 °C	0 °C	4.5 V	5.5 V	Surface Mount
Texas Instruments BQ2204ASN-N	Nonvolatile SRAM	16-SOIC	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	4.5 V	5.5 V	Surface Mount
Texas Instruments BQ2204APN	Nonvolatile SRAM	16-PDIP	16-DIP			70 °C	0 °C	4.5 V	5.5 V	Through Hole	0.3 in	7.62 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	150	$ 6.36
Texas Instruments	TUBE	1	$ 7.24
		100	$ 5.90
		250	$ 4.64
		1000	$ 3.93

Description

General part information

BQ2204A Series

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 VCCinput 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 VCCsupply to one of two 3V backup sup-plies. On a subsequent power-up, the SRAMs are write-protected until a power-valid condition exists.

Documents

Technical documentation and resources

X4 SRAM Nonvolatile Controller Unit datasheet

Data sheet