Description

The MAX6335/MAX6336/MAX6337 microprocessor (µP) supervisory circuits are a series of electronic components that monitor the power supplies in 1.8V to 3.3V µP and digital systems. They ensure circuit reliability and reduce cost by eliminating the need for external components and adjustments. These devices feature a debounced manual-reset input, asserting a reset signal when the VCC supply voltage drops below a preset threshold or when manual reset is activated. The MAX6335 has an active-high RESET output, while the MAX6336 (push/pull) and MAX6337 (open-drain) have an active low RESET output. These ICs have reset thresholds that can be adjusted between 1.6V and 2.5V, with 15 standard versions available. They are packaged in a 4-pin SOT143, making them suitable for space-critical applications.

Specifications and features

- Ultra-Low 0.7V Operating Supply Voltage

- Low 3.3µA Supply Current

- Precision Monitoring of 1.8V and 2.5V Power Supply Voltages

- Debounced Manual Reset

- Fully Specified over Temperature

- Three Power-On Reset Pulse Widths Available (1ms min, 20ms min, 100ms min)

- Three Available Output Structures: Push/Pull RESET, Push/Pull RESET, Open-Drain RESET

- Guaranteed RESET/RESET Valid to VCC = 0.7V (MAX6335/MAX6336)

- Power-Supply Transient Immunity

- No External Components

- 4-Pin SOT143 Package

- Pin-Compatible with MAX811/MAX812 and MAX6314/MAX6315

Application Scenarios

- Pentium II™ Computers

- Computers

- Controllers

- Intelligent Instruments

- Critical µP/µC Power Monitoring

- Portable/Battery-Powered Equipment

- Automotive

Comparison

- Increases circuit reliability

- Reduces cost by eliminating external components and adjustments

- Adjustable reset thresholds

- Available in different output structures

- Guaranteed reset validity at low VCC

- Power supply transient immunity

- Compact 4-pin package for space-critical applications

- Pin-compatible with other models

- None mentioned