The SN74HCT646NT is a high-performance integrated circuit designed and manufactured by Texas Instruments. This device is part of the 'HCT' family, which is characterized by its high-speed CMOS technology. The SN74HCT646NT serves as an octal bus transceiver with 3-state outputs and incorporates D-type flip-flops for added functionality.

Key Features

• Wide Operating Voltage Range: The SN74HCT646NT operates at a voltage range of 4.5V to 5.5V, making it compatible with TTL levels.
• High-Current 3-State Outputs: The device can drive up to 15 LSTTL loads, which allows for direct driving of data buses in digital systems.
• Octal Bidirectional Transceiver: It features eight bidirectional transceivers and D-type flip-flops for moving data between bus lines.
• Edge-Triggered D-Type Flip-Flops: The flip-flops in the device are edge-triggered, enabling synchronous data transfer.
• Control Inputs: It includes an output-enable (OE) input and a direction (DIR) input to control the direction of data flow.

Applications

The SN74HCT646NT is suitable for a wide range of applications, including:

• Bus interfacing in microprocessor or microcontroller-based systems
• Data communication and signal buffering
• Memory address driving
• Peripheral driving

Package and Quality

The device comes in a through-hole, 24-pin DIP (Dual In-line Package) with the suffix 'NT' indicating the package type. Texas Instruments is known for its commitment to quality, and the SN74HCT646NT is no exception. It is designed to meet or exceed the stringent industry standards, ensuring reliable performance in various applications.

Environmental and Industry Standards

The SN74HCT646NT adheres to environmental standards, including RoHS compliance, which restricts the use of certain hazardous substances in electronic equipment. Additionally, it is designed to meet or be compatible with industry standards such as JEDEC and others relevant to integrated circuits.