SN74AHCT257PWR

Signal Switches, Multiplexers, Decoders Overview

The SN74AHCT257PWR is a quad 2-input data selector/multiplexer with three-state non-inverting outputs. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs. The device provides low propagation delay, typically 6ns at 25°C and 5V. It includes latch-up performance exceeding 250mA per JESD 17. The PW package is a 16-pin TSSOP.

Signal Switches, Multiplexers, Decoders Feature Summary

• Quad 2-to-1 multiplexing capability with shared control logic
• Three-state outputs for bus-organized system interfacing
• TTL-compatible CMOS inputs for direct interface with TTL logic

Signal Switches, Multiplexers, Decoders Applications

• Data selection
• Multiplexing

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the TSSOP-16 package and large tape-and-reel carrier configuration. Confirm that the NIPDAU lead finish and Level-1 moisture sensitivity rating align with assembly requirements. Ensure the -40°C to 125°C operating temperature range meets environmental specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-to-1 multiplexer with three-state outputs is required in a 5V logic environment. The AHCT series ensures compatibility with TTL input thresholds while maintaining CMOS performance. Verify that the 16-pin TSSOP package fits the board layout constraints and thermal management needs.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AHCT257 family of high-speed CMOS logic devices. It is designed for applications requiring fast data routing and selection. The device integrates four independent multiplexers into a single package, optimizing space in dense digital circuits.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHCT257PW

Signal Switches, Multiplexers, Decoders FAQ

How are unused inputs handled?

Unused inputs must not be left floating. They should be terminated to VCC or GND using pull-up or pull-down resistors, typically 10kΩ, to prevent oscillations and excessive power consumption.

What is the maximum capacitive load?

The device can drive a load with a total capacitance less than or equal to 50pF while meeting all datasheet specifications. Exceeding this value may degrade performance.