Product Summary

The MAX691A is a micro-processor supervisory circuit, which is pin-compatible upgrades to the MAX691, MAX693, and MAX695. The MAX691A improves performance with 30 μA;A supply current, 200ms typ reset active delay on power-up, and 6ns chip-enable propagation delay. Features include write pro-tection of CMOS RAM or EEPROM, separate watchdog outputs, backup-battery switchover, and a RESET out-put that is valid with VCC down to 1V. The applications of the MAX691A include: Computers, Controllers, Intelligent Instruments, Automotive Systems, Critical µP Power Monitoring and so on.

Parametrics

MAX691A maximum ratings: (1)Terminal Voltage (with respect to GND): VCC, -0.3V to +6V;; (2)VBATT, -0.3V to +6V; All Other Inputs, -0.3V to (VOUT + 0.3V); (3)Input Current: VCC Peak, 1.0A; VCC Continuous, 250mA; ; (4)VBATT Peak,250mA; VBATT Continuous, 25mA; (5)GND, BATT ON: 100mA; (6)All Other Outputs: 25mA; (7)Operating Temperature Ranges: 0 to +70℃; (8)Storage Temperature Range: -65℃ to +160℃; (9)Lead Temperature (soldering, 10sec): +300℃.

Features

MAX691A features: (1)200ms Power-OK/Reset Timeout Period; (2)1μA Standby Current, 30μA Operating Current; (3)On-Board Gating of Chip-Enable Signals, 10ns Max Delay; (4)Guaranteed RESET Assertion to VCC = +1V; (5)Voltage Monitor for Power-Fail or Low-Battery Warning; (6)Power-Fail Accuracy Guaranteed to ±2%; (7)Available in 16-Pin Narrow SO and Plastic DIP Packages.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX691ACPE+
MAX691ACPE+

Maxim Integrated Products

Supervisory Circuits MPU Supervisor

Data Sheet

0-1: $5.44
1-25: $3.62
25-50: $2.63
50-250: $2.58
MAX691AEJE
MAX691AEJE

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
MAX691AMJE
MAX691AMJE

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
MAX691AESE-T
MAX691AESE-T

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
MAX691AMJE/883B
MAX691AMJE/883B

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
MAX691AEWE
MAX691AEWE

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
MAX691AEPE
MAX691AEPE

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
MAX691AEUE
MAX691AEUE

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable