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MAX690TESA+ from MAXIC,MAXIM - Dallas Semiconductor

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MAX690TESA+

Manufacturer: MAXIC, MAXIM

3.0V/3.3V Microprocessor Supervisory Circuits

Partnumber Manufacturer Quantity Availability
MAX690TESA+ MAXIC, MAXIM 2620 In Stock

Description and Introduction

3.0V/3.3V Microprocessor Supervisory Circuits The MAX690TESA+ is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated (MAXIC). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** Maxim Integrated (MAXIC)  
- **Part Number:** MAX690TESA+  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5%  
- **Reset Timeout Period:** 200ms (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 12μA (typical)  
- **Manual Reset Input:** Active-low (MR)  
- **Watchdog Timer:** 1.6s (typical)  

### **Descriptions:**
The MAX690TESA+ is a low-power microprocessor supervisory circuit designed to monitor power supply voltages in μP and digital systems. It ensures proper system operation by generating a reset signal during power-up, power-down, or brownout conditions. It includes a watchdog timer and manual reset input for enhanced system reliability.

### **Features:**
- **Precision Voltage Monitoring:** Monitors VCC for undervoltage conditions.  
- **Low Power Consumption:** 12μA typical supply current.  
- **Manual Reset Input:** Allows external pushbutton reset control.  
- **Watchdog Timer:** Prevents system lockup by requiring periodic toggling.  
- **Wide Operating Voltage Range:** Supports 1.2V to 5.5V systems.  
- **Guaranteed Reset Output Valid Down to VCC = 1V.**  
- **Industrial Temperature Range:** -40°C to +85°C.  

This information is sourced from the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

3.0V/3.3V Microprocessor Supervisory Circuits

Alternative Part Number

  • ADM690TARZ --: Pin-compatible microprocessor supervisory circuit with reset and watchdog functions, direct functional equivalent to the MAX690 in an SOIC package.
  • DS1232LP --: Microprocessor supervisor with reset and watchdog timing, similar supervisory functionality and widely used as a drop-in style replacement.
  • TL7705ACP --: Supply voltage supervisor with reset output, offers comparable reset supervision though pinout and package differ, suitable with minor redesign.
  • ADM690AN --: Pin-compatible microprocessor supervisory circuit with reset and watchdog functions, widely available and functionally equivalent to the MAX690.
  • DS1232 --: Microprocessor supervisor with reset and watchdog timing, suitable replacement for supply monitoring and reset generation in similar applications.

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