The MC54HC257J is a Quad 2-Input Multiplexer with 3-State Outputs. This device belongs to the HC (High-Speed CMOS) family of integrated circuits, known for their low power consumption and high-speed operation. The MC54HC257J selects one of two 4-bit data sources based on the select input and outputs the selected data. The 3-state outputs allow the device to be easily interfaced with bus-oriented systems.

Applications

• Data selection in digital systems
• Memory addressing
• Logic function generation
• Bus multiplexing
• Data routing

Features

• Four 2-input multiplexers
• 3-state outputs
• High-speed CMOS technology
• Wide operating voltage range (2V to 6V)
• Low power consumption
• TTL compatible inputs

Benefits

• Versatile data selection capabilities
• Easy integration into bus-oriented systems
• Low power consumption for battery-powered applications
• High-speed operation for improved system performance
• TTL compatibility for easy interfacing with other logic devices

The MC54HC257J operates over a wide voltage range, from 2V to 6V. It is pin-compatible with the LS257 and can be used as a direct replacement in many applications. The device's 3-state outputs allow multiple devices to share a common bus without causing contention.

The internal circuitry consists of CMOS logic gates, which provide the low power consumption and high-speed performance characteristic of the HC family. The device's TTL-compatible inputs allow for easy interfacing with TTL logic devices.

The MC54HC257J is typically available in a 16-pin DIP (Dual In-line Package). It is designed to operate over a temperature range of -55°C to 125°C.

This device is suitable for a wide range of digital applications where data selection and bus multiplexing are required. Its low power consumption, high-speed operation, and TTL compatibility make it a popular choice for designers of embedded systems, computer systems, and industrial control systems.