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HD74155

TTL HD74/HD74S Series

Partnumber Manufacturer Quantity Availability
HD74155 49 In Stock

Description and Introduction

TTL HD74/HD74S Series The HD74155 is a dual 2-line to 4-line decoder/demultiplexer integrated circuit manufactured by Hitachi.  

**Key Specifications:**  
- **Function:** Dual 2-to-4 decoder/demultiplexer  
- **Logic Family:** TTL (Transistor-Transistor Logic)  
- **Supply Voltage (Vcc):** 4.75V to 5.25V (standard TTL levels)  
- **Operating Temperature Range:** 0°C to 70°C (commercial grade)  
- **Input High Voltage (VIH):** Min. 2V  
- **Input Low Voltage (VIL):** Max. 0.8V  
- **Output High Voltage (VOH):** Min. 2.4V at -400µA  
- **Output Low Voltage (VOL):** Max. 0.4V at 16mA  
- **Propagation Delay:** Typically 15ns (varies with conditions)  
- **Package Options:** DIP (Dual In-line Package), likely 16-pin  

**Pinout (General TTL 74155 Decoder/Demultiplexer):**  
- **Select Inputs (A, B):** Address inputs for decoding  
- **Enable Inputs (G1, G2):** Active-low and active-high enable controls  
- **Outputs (Y0-Y3 per decoder):** Active-low outputs  

**Note:** Exact pin configurations and additional details should be verified in the official Hitachi HD74155 datasheet.

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