MAX807LEWE+ by Analog Devices

Full-Featured µP Supervisory Circuit with ±1.5% Reset Accuracy

Status: Active
Series: MAX807L, MAX807M, MAX807N
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The MAX807 microprocessor (µP) supervisory circuit reduces the complexity and number of components needed to monitor power-supply and battery-control functions in µP systems. A 70µA supply current makes the MAX807 ideal for use in portable equipment, while a 2ns chip-enable propagation delay and 250mA output current capability (20mA in battery-backup mode) make it suitable for larger, higher-performance equipment. The MAX807 comes in 16-pin DIP, SO, and TSSOP packages, and provides the following functions: µP reset. The active-low RESET 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. Active-high RESET output. Manual-reset input. Two-stage power-fail warning. A separate low-line comparator compares VCC to a threshold 52mV above the reset threshold. This low-line comparator is more accurate than those in previous µP supervisors. Backup-battery switchover for CMOS RAM, real-time clocks, µPs, or other low-power logic. Write protection of CMOS RAM or EEPROM. 2.275V threshold detector provides for power-fail warning and low-battery detection, or monitors a power supply other than +5V. BATT OK status flag indicates that the backup-battery voltage is above +2.275V. Watchdog-fault output—asserted if the watchdog input has not been toggled within a preset timeout period.

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Features

Precision 4.675V (MAX807L), 4.425V (MAX807M), or 4.575V (MAX807N) Voltage Monitoring
200ms Power-OK/Reset Time Delay
RESET-bar and RESET Outputs
Independent Watchdog Timer
1µA Standby Current
Power Switching 250mA in VCC Mode 20mA in Battery-Backup Mode
250mA in VCC Mode
20mA in Battery-Backup Mode
On-Board Gating of Chip-Enable Signals; 2ns CE Gate Propagation Delay
2ns CE Gate Propagation Delay
MaxCap® and SuperCap Compatible
Voltage Monitor for Power Fail
Backup-Battery Monitor
Guaranteed active-low RESET Valid to VCC = 1V
±1.5% Low-Line Threshold Accuracy 52mV above Reset Threshold

Specifications

Reset Thresh. (V) 4.0 to 4.54.5 to 5.0
Reset Out Active HighActive LowPush-Pull
ICC (µA) (max) 110
Oper. Temp. (°C) -55 to +125-40 to +850 to +70
Package/Pins PDIP/16SOIC (W)/16TSSOP/16
BudgetaryPrice (See Notes) 3.7


MAX807LEWE+ Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V WSOIC-16

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

Specifications

Threshold Voltage 4.675V
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 0V
Supply Voltage Max 5.5V
Reset Type Active-High Active-Low
Digital IC Case WSOIC
No. of Pins 16Pins
Delay Time 200ms
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Full-Featured µP Supervisory C | Analog Devices
Mpu Supervisor, 5.5V, Wsoic-16 | Newark Electronics
MPU SUPERVISOR, 5.5V, WSOIC-16 | element14

Frequently Asked Questions

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Is the MAX807LEWE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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