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SN74AHC123ADBR from TI,Texas Instruments

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SN74AHC123ADBR

Manufacturer: TI, TEXAS

Dual Retriggerable Monostable Multivibrators

Partnumber Manufacturer Quantity Availability
SN74AHC123ADBR TI, TEXAS 3567 In Stock

Description and Introduction

Dual Retriggerable Monostable Multivibrators The SN74AHC123ADBR is a dual retriggerable monostable multivibrator manufactured by Texas Instruments.  

### **Specifications:**  
- **Technology Family:** AHC  
- **Supply Voltage Range:** 2 V to 5.5 V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SSOP (DB) – 16 pins  
- **Propagation Delay (Typical):** 10 ns at 5 V  
- **Input Type:** Schmitt Trigger  
- **Output Type:** Push-Pull  
- **Number of Circuits:** 2  
- **Trigger Type:** Negative and Positive Edge  

### **Descriptions:**  
- The SN74AHC123ADBR is designed for high-speed CMOS logic applications.  
- It features two independent retriggerable monostable multivibrators with Schmitt-trigger inputs for noise immunity.  
- Each multivibrator can be triggered by either a positive or negative edge.  
- The output pulse width is determined by external timing components (resistor and capacitor).  

### **Features:**  
- **Retriggerable Operation:** Allows pulse-width extension by retriggering before the output pulse ends.  
- **Wide Operating Voltage Range:** 2 V to 5.5 V.  
- **Low Power Consumption:** Optimized for battery-powered applications.  
- **High Noise Immunity:** Schmitt-trigger inputs improve noise rejection.  
- **Output Drive Capability:** ±8 mA at 5 V.  
- **ESD Protection:** Exceeds 2000 V per JESD 22.  

This device is commonly used in applications such as pulse shaping, timing control, and delay generation.

Application Scenarios & Design Considerations

Dual Retriggerable Monostable Multivibrators

Alternative Part Number

  • MC74VHC123ADTR2G --: Dual retriggerable monostable multivibrator in the VHC family with similar logic function and supply range, available in TSSOP-like packages.
  • 74AHC123APW,118 --: Direct AHC-family dual retriggerable monostable multivibrator with comparable speed and drive, offered in TSSOP package.
  • CD74HC123E --: HC-family dual retriggerable monostable multivibrator from the same vendor, functionally equivalent with slightly different speed and package options.
  • 74VHC123AMTCX --: Dual retriggerable monostable multivibrator, VHC logic family, TSSOP-16, comparable speed and drive characteristics to the SN74AHC123A.
  • CD74HC123M96 --: Dual retriggerable monostable multivibrator from the HC family in SOIC-16, widely used as a substitute when TSSOP is not required and slightly slower speed is acceptable.

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