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MAX688CUA from MAXIM,MAXIM - Dallas Semiconductor

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MAX688CUA

Manufacturer: MAXIM, MAX

High-Accuracy / Low-Dropout Linear Regulators

Partnumber Manufacturer Quantity Availability
MAX688CUA MAXIM, MAX 2501 In Stock

Description and Introduction

High-Accuracy / Low-Dropout Linear Regulators The MAX688CUA is a microprocessor voltage monitor manufactured by Maxim Integrated. Below are the factual details about the device:

### **Manufacturer:**  
Maxim Integrated (now part of Analog Devices)  

### **Specifications:**  
- **Supply Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (over temperature)  
- **Reset Timeout Period:** Adjustable (via external capacitor) or fixed (140ms min)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin µMAX (UCSP also available)  
- **Quiescent Current:** 5µA (typical)  

### **Descriptions:**  
The MAX688CUA is a low-power microprocessor supervisory circuit designed to monitor system voltages and provide a reset signal when the supply voltage falls below a preset threshold. It ensures proper system operation during power-up, power-down, and brownout conditions.  

### **Features:**  
- Precision voltage monitoring for 1.2V to 5.5V systems  
- Manual reset input (MR) for external reset control  
- Active-low reset output (RESET)  
- Adjustable or fixed reset timeout period  
- Low quiescent current (5µA typical)  
- Small 8-pin µMAX package for space-constrained applications  
- No external resistors required for fixed threshold versions  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

High-Accuracy / Low-Dropout Linear Regulators

Alternative Part Number

  • LTC1235CSW --: Pin-compatible supervisory/regulator IC in the same function class, widely used as a MAX688 substitute with similar voltage monitoring features.
  • ADM8691ARW --: Comparable microprocessor supervisory circuit offering reset and watchdog functions, suitable drop-in replacement in many MAX688 applications.
  • TL7705ACP --: Low-cost supply voltage supervisor with reset output, functionally similar and commonly used as an alternative where exact MAX688 features are not critical.
  • LTC1235CN8 --: Pin-compatible microprocessor supervisory circuit with similar reset and watchdog functions, widely used as a MAX688 substitute.
  • ADM8691AN --: Comparable supervisory IC offering reset generation and watchdog timing in an 8-pin DIP package.
  • DS1232 --: Classic microprocessor supervisor with reset and watchdog features, functionally similar and readily available.

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