74LVCH8T245PW,118

Overview

The Nexperia 74LVCH8T245PW,118 is an 8-bit dual supply translating transceiver with 3-state outputs. It enables bidirectional level translation between any low voltage nodes ranging from 1.2 V to 5.5 V. The device features two data ports (An and Bn), a direction control input (DIR), and an output enable input (OE). Pins An, OE, and DIR are referenced to VCC(A), while pins Bn are referenced to VCC(B). It includes IOFF circuitry for partial power-down applications and active bus hold circuitry to maintain valid logic levels on unused inputs.

Feature Summary

• Bidirectional level translation between independent dual supply domains
• Active bus hold circuitry maintains valid logic levels on floating inputs
• IOFF circuitry prevents damaging backflow current during partial power-down
• Suspend mode isolates buses when either supply rail is at ground potential

Applications

• Partial power-down system architectures
• Interfacing mixed voltage logic nodes
• Bi-directional data bus translation
• Low voltage node translation (1.2 V to 5.0 V)

Procurement Notes

Verify the ordering suffix matches the required package variant. Confirm the specific temperature range requirement aligns with the -40 °C to +125 °C specification. Ensure the design utilizes the TSSOP24 plastic thin shrink small outline package. Check that the application supports the dual supply voltage requirements for both VCC(A) and VCC(B).

Selection Notes

Select this component when bidirectional translation between arbitrary low voltage nodes is required. The LVCH series provides active bus hold functionality not present in the standard LVC version. Verify that the operating environment requires the extended temperature range capability. Ensure the design can accommodate the separate supply rails for port A and port B.

Part Context

This part belongs to the 74LVC(H)8T245 family of 8-bit dual supply translating transceivers. It shares functional similarities with the 74LVC8T245 but includes active bus hold circuitry. The PW suffix indicates the TSSOP24 package type. It is designed for applications requiring flexible voltage translation across multiple low voltage standards.

Replacement Considerations

The 74LVC8T245PW,118 is a compatible alternative within the same family, differing only by the absence of active bus hold circuitry.