Product Summary

The MAX791CPE microprocessor (μP) supervisory circuit reduces the complexity and number of components need-ed to monitor power-supply and battery-control functionsin μP systems. The 50μA supply current makes the MAX791CPE ideal for use in portable equipment, while the 6ns chip-enable propagation delay and 250mA output capa-bility (25mA in battery-backup mode) make it suitable forlarger, higher-performance equipment. Applications of the MAX791CPE include:Critical PAP Power Monitorin, Intelligent Instruments, Portable/Battery-Powered Equipment.

Parametrics

MAX791CPE absolute maximum ratings: (1) Input 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, VBATT Peak: 250mA, VBATT Continuous: 25mA, GND, BATT ON: 100mA, All Other Outputs: 25mA; (4) Continuous Power Dissipation (Ta= +70°C); (5) Plastic DIP (derate 10.53°C/W above +70°C) : 842mW; (6) Narrow SO (derate 8.70°C/W above 70°C) : 800mW; (7) Operating Temperature Ranges: 0°C to +70°C; (8) Storage Temperature Range: -65°C to +160°C; (9) Lead Temperature (soldering, 10sec) : +300°C.

Features

MAX791CPE features: (1) Precision 4.65V Voltage Monitoring; (2) 200ms Power-OK/Reset Time Delay; (3) Independent Watchdog Timer (TM)Preset or Adjustable; (4)1μA Standby Current; (5) Power Switching: Mode 250mA Output in Vcc Mode,25mA Output in Battery-Backup Mode; (6) On-Board Gating of Chip-Enable Signals, Memory Write-Cycle Completion, 6ns CE Gate Propagation Delay; (7) Voltage Monitor for Power-Fail or Low-Battery Warning; (8) Backup-Battery Monitor; (9) Guaranteed RESET Valid to Vcc=1V.

Diagrams

MAX791CPE Pin Configuration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX791CPE
MAX791CPE

Maxim Integrated Products

Supervisory Circuits

Data Sheet

Negotiable 
MAX791CPE+
MAX791CPE+

Maxim Integrated Products

Supervisory Circuits MPU Supervisor

Data Sheet

0-1: $5.83
1-25: $3.92
25-50: $2.83
50-100: $2.80