74LVXC3245QSC

Translators, Level Shifters Overview

The onsemi 74LVXC3245QSC is an 8-bit dual-supply configurable voltage interface transceiver with 3-STATE outputs. It operates with a fixed VCCA of 2.7V to 3.6V and a flexible VCCB range of 3.0V to 5.5V. The device provides bidirectional data transfer between Side A (dedicated 3V) and Side B (configurable). Key electrical parameters include propagation delays up to 10.0 ns, output drive currents of ±24 mA, and quiescent supply currents under 50 µA. It supports simultaneous switching noise levels and dynamic threshold performance.

Translators, Level Shifters Feature Summary

• Configurable voltage interface allowing Side B to track VCCB supply levels from 3V to 5V
• Allows B Port and VCCB to float simultaneously when Output Enable is HIGH
• Implements proprietary EMI reduction circuitry for signal integrity
• Functionally compatible with the standard 74 series 245

Translators, Level Shifters Applications

• PCMCIA and other real-time configurable I/O applications
• Low power notebook designs requiring mixed voltage interfaces
• Buffering data to and from PCMCIA sockets during card insertion/removal

Translators, Level Shifters Procurement Notes

Verify the specific package type, as the QSC suffix denotes the Quarter Size Outline Package (QSOP). Confirm that the ordering code matches current ON Semiconductor nomenclature, as Fairchild part numbers with underscores may have been converted to dashes during integration. Check datasheet revisions for any updates to pin descriptions or absolute maximum ratings before finalizing procurement.

Translators, Level Shifters Selection Notes

Select this component when interfacing a 3V host system with a configurable 3V-to-5V peripheral bus. Ensure VCCA is strictly maintained within the 2.7V to 3.6V range while VCCB can vary up to 5.5V. This device is appropriate for applications requiring floating bus capabilities during hot-swapping events, such as PCMCIA card slots, where Side B must remain high-impedance without affecting the VCCB rail.

Translators, Level Shifters Part Context

This device belongs to the LVXC family of low-voltage CMOS translating transceivers. It is designed specifically for dual-supply environments where one side operates at a fixed low voltage and the other adapts to varying logic levels. The QSOP package offers a compact footprint suitable for space-constrained portable electronics and embedded systems requiring reliable voltage translation.

Translators, Level Shifters Replacement Considerations

Check for updated part numbers on the ON Semiconductor website due to the Fairchild integration, which changed underscore characters to dashes in ordering codes. Verify functional compatibility with existing 74LS245 or 74HC245 designs if migrating from legacy standards, ensuring voltage levels and drive strengths meet the new application requirements.