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TC74VHCT139AFT from TOS,TOSHIBA

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TC74VHCT139AFT

Manufacturer: TOS, TOSHIBA, TOSHIBA

DUAL 2-TO-4 LINE DECODER

Partnumber Manufacturer Quantity Availability
TC74VHCT139AFT TOS, TOSHIBA, TOSHIBA 3386 In Stock

Description and Introduction

DUAL 2-TO-4 LINE DECODER The TC74VHCT139AFT is a dual 2-to-4 line decoder/demultiplexer manufactured by Toshiba. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Supply Voltage (VCC):** 4.5V to 5.5V  
- **High-Level Input Voltage (VIH):** 2.0V (min)  
- **Low-Level Input Voltage (VIL):** 0.8V (max)  
- **High-Level Output Voltage (VOH):** 4.4V (min) @ IOH = -4mA  
- **Low-Level Output Voltage (VOL):** 0.1V (max) @ IOL = 4mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Propagation Delay (tpd):** 6.5ns (max) @ VCC = 5V, CL = 50pF  
- **Input Capacitance (CI):** 5pF (max)  
- **Power Dissipation (PD):** 500mW (max)  
- **Package:** TSSOP-16  

### **Descriptions:**  
- The TC74VHCT139AFT is a high-speed CMOS logic device with TTL-compatible inputs.  
- It consists of two independent 2-to-4 decoders/demultiplexers with active-low outputs.  
- Each decoder has two select inputs (A, B) and an enable input (E).  
- When the enable input is low, the selected output goes low based on the binary input.  

### **Features:**  
- **High-Speed Operation:** Optimized for 5V operation with fast switching speeds.  
- **TTL-Compatible Inputs:** Can interface directly with TTL levels.  
- **Low Power Consumption:** CMOS technology ensures low static power dissipation.  
- **Balanced Propagation Delays:** Ensures reliable performance in high-speed applications.  
- **Wide Operating Voltage Range:** Supports standard 5V systems.  
- **Output Current Capability:** ±8mA (min) for driving standard loads.  
- **ESD Protection:** Built-in protection against electrostatic discharge.  

This device is commonly used in address decoding, memory selection, and data routing applications.

Application Scenarios & Design Considerations

DUAL 2-TO-4 LINE DECODER

Alternative Part Number

  • SN74AHCT139PWR --: Dual 2-to-4 line decoder/demultiplexer with TTL-compatible inputs, functionally equivalent to the VHCT139 in a TSSOP package.
  • 74VHCT139AMTCX --: Same VHCT logic family dual decoder/demultiplexer with 5V-tolerant inputs, direct functional and package match.
  • MC74VHCT139ADTR2G --: VHCT dual 2-to-4 decoder with equivalent speed and drive, available in TSSOP for drop-in replacement.

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