MAX791CPE+ by Analog Devices

Microprocessor Supervisory Circuit


The MAX791 microprocessor (µP) supervisory circuit reduces the complexity and number of components needed to monitor power-supply and battery-control functions in µP systems. The 50µA supply current makes the MAX791 ideal for use in portable equipment, while the 6ns chip-enable propagation delay and 250mA output capability (25mA in battery-backup mode) make it suitable for larger, higher-performance equipment. The MAX791 comes in 16-pin DIP and narrow SO packages and provides the following functions: µP reset-RESET-bar output is asserted during power-up, power-down, and brownout conditions, and is guaranteed to be in the correct state for VCC down to 1V, even with no battery in the circuit. Manual-reset input. A 1.25V threshold detector provides for power-fail warning and low-battery detection, or monitors a power supply other than +5V. Two-stage power-fail warning-a separate low-line comparator compares VCC to a threshold 150mV above the reset threshold. Backup-battery switchover for CMOS RAM, real-time clocks, µPs, or other low-power logic. Software monitoring of backup-battery voltage. A watchdog-fault output is asserted if the watchdog input has not been toggled within either a preset or an adjustable timeout period. Write protection of CMOS RAM or EEPROM. Pulsed watchdog output, to give advance warning of impending WDO-bar assertion caused by watchdog timeout.

Where to Buy

Prices starting from US$8.89

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Schukat Electronic
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Transfer Multisort Elektronik
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Features

Precision 4.65V Voltage Monitoring
200ms Power-OK/Reset Time Delay
Independent Watchdog Timer-Preset or Adjustable
1µA Standby Current
Power Switching 250mA Output in VCC Mode 25mA Output in Battery-Backup Mode
250mA Output in VCC Mode
25mA Output in Battery-Backup Mode
On-Board Gating of Chip-Enable Signals Memory Write-Cycle Completion 6ns CE Gate Propagation Delay
Memory Write-Cycle Completion
6ns CE Gate Propagation Delay
MaxCap™ or SuperCap™ Compatible
Voltage Monitor for Power-Fail or Low-Battery Warning
Backup-Battery Monitor
Guaranteed RESET-bar Valid to VCC = 1V

Specifications

Reset Thresh. (V) 3.3 to 5.5
Reset Out Active LowPush-Pull
ICC (µA) (max) 150
Oper. Temp. (°C) -55 to +125-40 to +850 to +70
Package/Pins CDIP/16PDIP/16SOIC (N)/16
BudgetaryPrice (See Notes) 5.86


MAX791CPE+ Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V DIP-16

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Threshold Voltage 4.65V
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 0V
Supply Voltage Max 5.5V
Reset Type Active-Low
Digital IC Case DIP
No. of Pins 16Pins
Delay Time 200ms
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Microprocessor Supervisory Cir | Analog Devices
Watchdog 4,65V 50µA Supply DIP16 | Schukat Electronic
IC: Supervisor Integrated Circuit | Transfer Multisort Elektronik
MPU SUPERVISOR, 5.5V, DIP-16 | Farnell

Frequently Asked Questions

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Is the MAX791CPE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Analog Devices, Schukat Electronic, Transfer Multisort Elektronik, element14 and Farnell have stock available or on a lead time for MAX791CPE+ .

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