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SN74HCT646NT from TI,Texas Instruments

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SN74HCT646NT

Manufacturer: TI

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

Partnumber Manufacturer Quantity Availability
SN74HCT646NT TI 23 In Stock

Description and Introduction

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS The SN74HCT646NT is a bus transceiver and register manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Logic Family:** HCT  
- **Logic Type:** Octal Bus Transceiver/Register  
- **Number of Bits:** 8  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **High-Level Input Voltage (Min):** 2V  
- **Low-Level Input Voltage (Max):** 0.8V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package / Case:** PDIP-24  
- **Mounting Type:** Through Hole  
- **Output Type:** 3-State  
- **Propagation Delay Time:** 20 ns (typical)  
- **Current - Output High, Low:** 6mA, 6mA  

### **Descriptions:**  
The SN74HCT646NT is an octal bus transceiver and register with 3-state outputs. It is designed for asynchronous communication between data buses and features bidirectional data flow controlled by the direction (DIR) input. The device also includes storage registers for temporary data holding.

### **Features:**  
- **Bidirectional Bus Interface**  
- **3-State Outputs**  
- **HCT Input Compatibility (TTL-Level Inputs)**  
- **Wide Operating Voltage Range (4.5V to 5.5V)**  
- **Bus Hold on Data Inputs Eliminates Need for External Pull-Up/Pull-Down Resistors**  
- **Latch-Up Performance Exceeds 250 mA Per JESD 17**  
- **ESD Protection Exceeds JESD 22**  

This device is commonly used in data buffering, bus isolation, and register storage applications.

Application Scenarios & Design Considerations

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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