Description

The MAX793TESE+ is a microprocessor supervisor circuit that is part of the MAX793/MAX794/MAX795 family. It monitors and controls 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. It offers a choice of reset threshold voltage range and is available in 16-pin DIP and narrow SO packages. The MAX793TESE+ is suitable for use in battery-powered computers and controllers, embedded controllers, intelligent controllers, critical µP power monitoring, and portable equipment applications.

Specifications and features

• Precision Supply-Voltage Monitor
• Fixed Reset Trip Voltage (MAX793/MAX795)
• Adjustable Reset Trip Voltage (MAX794)
• Guaranteed Reset Assertion to VCC = 1V
• Backup-Battery Power Switching—Battery Voltage Can Exceed VCC
• On-Board Gating of Chip-Enable Signals—7ns Max Propagation Delay(MAX793/MAX794 Only)
• Battery Freshness Seal
• Battery OK Output (MAX793)
• Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning
• Independent Watchdog Timer (1.6sec timeout)
• Manual Reset Input

Application Scenarios

The MAX793TESE+ can be used in battery-powered computers and controllers, embedded controllers, intelligent controllers, critical µP power monitoring, and portable equipment.

Comparison

• Offers a choice of reset threshold voltage range
• Backup-battery voltage can exceed VCC, permitting the use of 3.6V lithium batteries in systems using 3.0V to 3.3V for VCC
• On-Board Gating of Chip-Enable Signals—7ns Max Propagation Delay(MAX793/MAX794 Only)
• Battery OK Output (MAX793)
• Independent Watchdog Timer (1.6sec timeout)

• None found