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DS1218S

Nonvolatile RAM 0Â°C ~ 70Â°C Tube 8-SOIC 4.5 V ~ 5.5 V

Product Category: Memory Controllers
Mfr. Part #
DS1218S
Manufacturer: Maxim Integrated
Package: 8-SOIC (0.154", 3.90mm Width)
Lead Free Status /RoHS Status:
Data Sheet: DS1218S Datasheet
Inventory: In Stock

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Mfr. Part #: DS1218S

Specifications
Product Details

Specifications

Manufacturer Maxim Integrated

Product Category Memory Controllers

Series -

Packaging Tube

Package-Case 8-SOIC (0.154", 3.90mm Width)

Operating-Temperature 0Â°C ~ 70Â°C

Voltage-Supply 4.5 V ~ 5.5 V

Supplier-Device-Package 8-SOIC

Controller-Type Nonvolatile RAM

Product Details

DESCRIPTION

The DS1218 is a CMOS circuit which solves the application problems of converting CMOS RAM into nonvolatile memory. Incoming power is monitored for an out-of-tolerance condition. When such a condition is detected, the chip enable output is inhibited to accomplish write protection and the battery is switched on to supply RAM with uninterrupted power. Special circuitry uses a low-leakage CMOS process which affords precise voltage detection at extremely low battery consumption. The 8-pin mini DIP package keeps PC board real estate requirements to a minimum. By combining the DS1218 nonvolatile controller chip with a full CMOS memory and lithium batteries, 10 years of nonvolatile RAM operation can be achieved.

FEATURES

Converts CMOS RAM into nonvolatile memories
Unconditionally write protects when VCC is out of tolerance
Automatically switches to battery when power fail occurs
Space saving 8-pin mini-DIP/8-pin 150 mil SOIC
Consumes less than 100 na of battery current

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Mfr. Part #: DS1218S