IC Phoenix logo

Home ›  M  › M68 > MAX638AESA

MAX638AESA from MAXIM,MAXIM - Dallas Semiconductor

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

MAX638AESA

Manufacturer: MAXIM, MAX

+5V/Adjustable CMOS Step-down Switching Regulator

Partnumber Manufacturer Quantity Availability
MAX638AESA MAXIM, MAX 355 In Stock

Description and Introduction

+5V/Adjustable CMOS Step-down Switching Regulator The **MAX638AESA** is a microprocessor (μP) supervisory circuit manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual data:

### **Manufacturer:**  
- **MAXIM INTEGRATED** (now part of Analog Devices)  

### **Specifications:**  
- **Type:** Microprocessor Voltage Monitor / Supervisor  
- **Package:** **8-SOIC (150mil)**  
- **Operating Voltage Range:** **1.2V to 5.5V**  
- **Reset Threshold Accuracy:** **±1.5%** (typical)  
- **Reset Timeout Period:** **Adjustable (via external capacitor) or fixed (200ms typical)**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Quiescent Current:** **5μA (typical)**  
- **Manual Reset Input:** **Yes (active-low MR pin)**  
- **Output Type:** **Active-low RESET (open-drain or push-pull, depending on variant)**  

### **Descriptions:**  
- The **MAX638AESA** is designed to monitor system voltage levels and provide a **reset signal** to a microprocessor when the supply voltage drops below a preset threshold.  
- It ensures proper system initialization by holding the μP in reset until the supply voltage stabilizes.  
- The device includes a **manual reset input (MR)** for external reset control.  
- Available in **factory-set or adjustable threshold variants** for flexibility.  

### **Features:**  
- **Low Power Consumption:** Only **5μA** typical supply current.  
- **Precision Voltage Monitoring:** **±1.5%** threshold accuracy.  
- **Adjustable or Fixed Reset Timeout:** Configurable via an external capacitor.  
- **Wide Operating Voltage Range:** Supports **1.2V to 5.5V** systems.  
- **Manual Reset Capability:** Allows for external system reset.  
- **Compact Package:** **8-pin SOIC** for space-constrained designs.  
- **Industrial Temperature Range:** Operates from **-40°C to +85°C**.  

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

Application Scenarios & Design Considerations

+5V/Adjustable CMOS Step-down Switching Regulator

Alternative Part Number

  • LTC1235CSW --: Pin-compatible CMOS supervisory circuit with similar reset threshold and open-drain output, widely available and from a different series.
  • ADM809LARTZ --: Low-cost microprocessor reset supervisor with comparable reset threshold and active-low output, different naming and series.
  • TL7705ACD --: Classic supply voltage supervisor with adjustable threshold and reset output, functionally similar and from a distinct series.
  • TL7705ACP --: Classic 5V supply supervisor with adjustable reset threshold, a common drop-in functional replacement for MAX638 series.
  • MC34064P-5 --: Low-cost 5V voltage supervisor with reset output, suitable functional substitute when exact MAX638 features are not required.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips