PI3B3257Q

Signal Switches, Multiplexers, Decoders Overview

The PI3B3257Q is a 3.3V Quad 2:1 multiplexer/demultiplexer with three-state outputs, manufactured by Diodes Incorporated. It operates within a supply voltage range of 3V to 3.6V and supports an ambient temperature range of -40°C to +85°C. The device features a maximum on-resistance of 8Ω, a propagation delay of 0.25ns, and a quiescent current of 0.1µA. It is housed in a 16-pin QSOP package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Pinout and function compatible with PI74FCT257T, 74F257, and 74ALS/AS/LS257 logic devices
• Ultra-low quiescent power consumption suitable for notebook applications
• Near-zero propagation delay with fast switching speed

Signal Switches, Multiplexers, Decoders Applications

• Notebook computer systems
• High-speed data routing
• Bus switching applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'Q' corresponds to the 16-pin QSOP package configuration. Confirm RoHS compliance status as indicated in the manufacturer's documentation. Ensure the component meets the required ambient operating temperature range of -40°C to +85°C for the intended application environment.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when pin compatibility with legacy 74FCT257 or 74ALS/AS/LS257 devices is required. It is appropriate for designs needing low on-resistance and minimal propagation delay. Verify that the 16-pin QSOP package dimensions fit the target PCB layout constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the PI3B3257 series of NanoSwitch™ bus switches. It provides quad 2:1 multiplexing functionality optimized for 3.3V logic systems. The series includes variants in different packages such as SOIC, TSSOP, and UQFN to accommodate various board space requirements.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct replacements include PI3B3257WE (SOIC) and PI3B3257LEX (TSSOP). Cross-manufacturer equivalents like SN74CBTLV3257D are listed as similar but require verification of electrical characteristics.