Description

The MAX6381XR46D3+T is a microprocessor (µP) supervisory circuit designed to monitor power-supply voltages from +1.8V to +5.0V. It consumes only 3µA of supply current at +1.8V. The reset output asserts whenever VCC falls below the factory-set reset thresholds and remains asserted for a minimum reset timeout period after VCC rises above the reset threshold. It offers reset thresholds ranging from +1.58V to +4.63V in approximately 100mV increments, and seven minimum reset timeout delays ranging from 1ms to 1200ms.

Specifications and features

- Factory-Set Reset Threshold Voltages Ranging from +1.58V to +4.63V in Approximately 100mV Increments

- ±2.5% Reset Threshold Accuracy Over Temperature (-40°C to +125°C)

- Seven Reset Timeout Periods Available: 1ms, 20ms, 140ms, 280ms, 560ms, 1120ms, 1200ms (min)

- 3 Reset Output Options (Active-Low Push-Pull, Active-High Push-Pull, Active-Low Open-Drain)

- Reset Output State Guaranteed Valid Down to VCC = 1V

- Manual Reset Input (MAX6384/MAX6385/MAX6386)

- Auxiliary RESET IN (MAX6387/MAX6388/MAX6389)

- VCC Reset Timeout (1120ms or 1200ms)/Manual Reset Timeout (140ms or 150ms) (MAX6390)

- Negative-Going VCC Transient Immunity

- Low Power Consumption of 6µA at +3.6V and 3µA at +1.8V

- Pin Compatible with MAX809/MAX810/MAX803/MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348, and MAX6711/MAX6712/MAX6713

- Tiny 3-Pin/4-Pin SC70 and 6-Pin µDFN Packages

Application Scenarios

- Computers

- Controllers

- Intelligent Instruments

- Critical µP and µC

- Power Monitoring

- Portable/Battery Powered Equipment

- Dual Voltage Systems