74LVC8T245PW,118

Overview

The Nexperia 74LVC8T245PW,118 is an octal bus transceiver with dual supply voltage translation capabilities and 3-state outputs. It operates within a wide supply voltage range of 1.2 V to 5.5 V on both ports (VCC(A) and VCC(B)). The device supports bidirectional data transmission controlled by a Direction (DIR) input and features Output Enable (OE) for high-impedance isolation. It includes IOFF circuitry for partial power-down protection and active bus hold functionality in the LVCH variant.

Feature Summary

• Dual supply voltage translation between any low voltage nodes from 1.2 V to 5.5 V
• IOFF circuitry prevents damaging backflow current during partial power-down applications
• Active bus hold circuitry maintains unused or floating data inputs at valid logic levels
• Suspend mode automatically places both ports in high-impedance state when either supply is at GND

Applications

• Bidirectional level translation between mixed voltage domains
• Partial power-down applications requiring backflow prevention
• Systems utilizing multiple independent supply rails for different logic sections

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm whether the application requires the standard LVC version or the LVCH version with active bus hold. Ensure compatibility with the target PCB footprint for the TSSOP24 package before finalizing procurement orders.

Selection Notes

Select this component when interfacing circuits operating at different voltage levels within the 1.2 V to 5.5 V range. Choose the LVCH variant if the design requires holding floating inputs at a defined logic state without external pull-up or pull-down resistors. Verify that the required propagation delay meets the system timing constraints across the full operating temperature range.

Part Context

This part belongs to the 74LVC/LVCH family of CMOS logic devices manufactured by Nexperia. It is specifically designed as an 8-bit translating transceiver, distinct from single-supply variants like the 74HC245 or non-translating 74LV245. The PW suffix indicates the TSSOP24 plastic thin shrink small outline package.

Replacement Considerations

Direct functional equivalents include the 74LVCH8T245PW,118 which shares identical pinout and electrical characteristics but includes active bus hold circuitry. Other 74LVC8T245 variants may be considered if bus hold is not required.