SN74HC640N Octal Bus Transceiver from Texas Instruments

The SN74HC640N is a high-performance, octal bus transceiver designed by Texas Instruments. This integrated circuit is part of the 74HC series, known for its high-speed CMOS technology. The device is optimized for use in digital systems where bidirectional data transmission and multiplexing are required.

Key Features

• Wide Operating Voltage: Ranging from 2V to 6V, the SN74HC640N provides flexible power supply options suitable for various applications.
• High Drive: With the capability to drive up to 15 LSTTL loads, it ensures compatibility with multiple logic families.
• Bi-Directional Data Flow: The transceiver features eight channels that can be individually controlled to transmit data in either direction.
• 3-State Outputs: The inclusion of 3-state outputs allows for connection to a bus-oriented system, facilitating easy data flow control.

Applications

The SN74HC640N is suitable for a wide range of applications, including:

• Bus Interface in Microprocessor/Microcontroller Systems
• Data Exchange in Multiplexed Systems
• Memory Switching Operations
• Input/Output Port Expansion

Product Specifications

Parameter Value Logic Type Octal Bus Transceiver Number of Channels 8 Input Level CMOS Output Level CMOS, LSTTL Mounting Type Through Hole Package / Case PDIP-20 Operating Temperature -40°C to 85°C

The SN74HC640N is available in a 20-pin PDIP (Plastic Dual-In-Line Package) configuration, which makes it easy to integrate into both prototyping and production environments. Its robust design and industry-standard footprint make it a reliable choice for designers and engineers looking to create efficient and flexible digital systems.