SN74LVC646APW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC646APW is an octal bus transceiver and register with 3-state outputs manufactured by Texas Instruments. It operates from a supply voltage range of 1.65 V to 3.6 V. The device features inputs that accept voltages up to 5.5 V, supporting partial-power-down mode via the Ioff function. It is housed in a 24-TSSOP package and functions as a non-inverting bus transceiver.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight bidirectional data paths
• Register functionality for data storage during transmission
• Ioff feature enables partial-power-down operation to minimize standby current

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data communication on multi-drop buses
• Memory interface circuits requiring level translation
• Control signal routing in embedded systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'PW' confirms the TSSOP-24 package variant. Confirm RoHS compliance status through official manufacturer documentation. Check for end-of-life notices or obsolescence warnings prior to final design approval. Ensure input voltage levels match system requirements given the 5.5 V tolerance.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal width is required for bus architectures. The 3-state output allows multiple devices to share a common data line without contention. Verify that the 1.65 V to 3.6 V operating range aligns with the target system power rails. Consider the register feature if latching capability is necessary for the application timing.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC646A logic family, which provides low-voltage CMOS performance. The 'P' indicates plastic packaging, while 'W' specifies the TSSOP form factor. It serves as a standard interface solution for connecting microprocessors to peripheral devices in low-voltage digital designs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC646APWR is the tape-and-reel version of the same functional device. SN74LVC646APWT is another reel variant. Direct pin-compatible substitutes may include other octal bus transceivers from different manufacturers, provided voltage and speed specifications are matched.