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MAX6902ETA+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX6902ETA+

Manufacturer: MAXIM

SPI-Compatible RTC in a TDFN

Partnumber Manufacturer Quantity Availability
MAX6902ETA+,MAX6902ETA MAXIM 127 In Stock

Description and Introduction

SPI-Compatible RTC in a TDFN The MAX6902ETA+ is a microprocessor (µP) supervisory circuit manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Supply Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (at +25°C)  
- **Reset Timeout Period:** 140ms (min)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin TDFN (3mm x 3mm)  
- **Low Quiescent Current:** 6µA (typical)  
- **Manual Reset Input:** Yes (active-low)  
- **Watchdog Timer:** Yes (1.6s timeout)  
- **Power-Fail Comparator:** No  
- **Battery Backup Switch:** No  

### **Descriptions:**  
The MAX6902ETA+ monitors the power supply voltage of µP and digital systems, ensuring proper operation during power-up, power-down, and brownout conditions. It asserts a reset signal when the supply voltage drops below a preset threshold and maintains it for a fixed delay after the voltage returns to a valid level. It also includes a watchdog timer and manual reset input.  

### **Features:**  
- Precision voltage monitoring for 1.8V, 2.5V, 3V, 3.3V, and 5V systems  
- Low power consumption (6µA typical)  
- Guaranteed reset output valid down to VCC = 1V  
- Watchdog timer with 1.6s timeout  
- Manual reset input for external control  
- Space-saving 8-pin TDFN package  

This device is commonly used in embedded systems, industrial controls, and battery-powered applications requiring reliable power monitoring.

Application Scenarios & Design Considerations

SPI-Compatible RTC in a TDFN

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