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DS1218S+T&R

IC CONTROLLER NV 8-SOIC

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

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Mfr. Part #: DS1218S+T&R

Specifications
Product Details

Specifications

Manufacturer Maxim Integrated

Product Category Memory Controllers

Series DS1218S

Type Non-Volatile RAM (NVRAM)

Packaging Tape & Reel (TR) Alternate Packaging

Unit-Weight 0.017870 oz

Mounting-Style SMD/SMT

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

Memory-Type Nonvolatile RAM - NVRAM

Controller-Type Nonvolatile RAM

Maximum Operating Temperature + 70 C

Operating temperature range 0 C

Description-Function Converting CMOS RAM into nonvolatile memory

Operating-Supply-Current 2 mA

Battery-Backup-Switching Yes

Part-#-Aliases 90-1218S+TRL DS1218S

Supply-Voltage-Max 5.5 V

Supply-Voltage-Min 4.5 V

Package-Case SO-8

Number-of-Memory-Channels 1 Memory Channel

Lithium-Battery-Monitor No

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+T&R