The SN74LS257BDR is a high-performance integrated circuit designed by Texas Instruments, one of the leading manufacturers in the semiconductor industry. This device is part of the 74LS series, which are Low-Power Schottky Logic Integrated Circuits. The SN74LS257BDR is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs.

Key Features:

• Logic Type: Data Selector/Multiplexer
• Number of Circuits: 4
• Independent Circuits: 2
• Output Type: 3-State
• Propagation Delay Time: 15ns at 5V
• Operating Temperature: -55°C to 125°C
• Mounting Type: Surface Mount
• Package / Case: SOIC-16

Product Description:

The SN74LS257BDR is specifically designed for multiplexing and data routing applications. It features four individual 2-line to 1-line multiplexers with three-state outputs that can interface directly with the data lines of a bus-oriented system. Each multiplexer has two select inputs (A and B) which allow one of the two data inputs to be selected and passed through to the output.

The device is fabricated with the Schottky barrier diode process for high speed and is packaged in a 16-pin SOIC package, making it suitable for space-constrained applications. The three-state outputs can be connected directly to a bus-structured system. They can be placed in a high-impedance state, effectively disconnecting the output from the bus, allowing multiple devices to be connected to the bus without interference.

With its fast propagation delay and wide operating temperature range, the SN74LS257BDR is ideal for use in a variety of systems, including industrial controls, data communication, and computer systems. The device's low power consumption and reliable performance make it a preferred choice for designers looking to optimize their high-speed digital logic circuits.