Product Summary

The MAX794CSE-T microprocessor (μP) supervisory circuits monitor and control the activities of +3.0V/+3.3V μPs by providing backup-battery switchover, among other features such as low-line indication, μP reset, write protection for CMOS RAM, and a watchdog (see the Selector Guide below). The MAX794CSE-T is available in 16-pin DIP and narrow SO packages.

Parametrics

MAX794CSE-T absolute maximum ratings: (1)Terminal Voltage (with respect to GND) VCC: -0.3V to 6.0V; (2)Terminal Voltage (with respect to GND) VBATT: -0.3V to 6.0V; (3)All Other Inputs: -0.3V to the higher of VCC or VBATT; (4)Continuous Input Current VCC: 200mA; (5)Continuous Input Current VBATT: 50mA; (6)Continuous Input Current GND: 20mA; (7)Output Current VOUT: 200mA; (8)All Other Outputs: 20mA; (9)Power Dissipation (TA = +70℃), 16-Pin Narrow SO (derate 9.52mW/℃ above +70℃): 696mW; (10)Operating Temperature Ranges: 0℃ to +70℃; (11)Storage Temperature Range: -65℃ to +160℃; (12)Lead Temperature (soldering, 10sec): +300℃.

Features

MAX794CSE-T features: (1)Precision Supply-Voltage Monitor; (2)Guaranteed Reset Assertion to VCC = 1V; (3)Backup-Battery Power Switching—Battery Voltage Can Exceed VCC; (4)On-Board Gating of Chip-Enable Signals—7ns Max Propagation Delay; (5)Battery Freshness Seal; (6)Battery OK Output; (7)Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning; (8)Independent Watchdog Timer (1.6sec timeout); (9)Manual Reset Input.

Diagrams

MAX794CSE-T Typical Operating Circuit

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MAX794CSE-T
MAX794CSE-T

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
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MAX700

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MAX700C/D

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Data Sheet

0-1: $3.60
1-25: $2.40
25-50: $1.74
50-250: $1.71