74LVCH1T45GS,132

Overview

The Nexperia 74LVCH1T45GS,132 is a single-bit dual-supply translating transceiver with 3-state outputs. It enables bidirectional level translation between ports A and B, referenced to VCC(A) and VCC(B) respectively. Both supply pins support voltages from 1.2 V to 5.5 V. The device includes an IOFF circuit for partial power-down protection and active bus hold circuitry to maintain valid logic levels on floating inputs. It operates within a temperature range of -40 °C to +125 °C.

Feature Summary

• Active bus hold circuitry maintains unused or floating data inputs at a valid logic level
• IOFF circuitry disables outputs to prevent damaging backflow current during partial power-down
• Suspend mode activates when either supply voltage reaches GND level, placing ports in high-impedance state

Applications

• Partial power-down applications requiring backflow prevention
• Bidirectional level translation between low voltage nodes
• Systems utilizing suspended power states

Procurement Notes

Verify the specific GS package designation (SOT1202) matches your PCB footprint requirements. Confirm that the LVCH variant's active bus hold feature aligns with your design needs compared to standard LVC versions. Ensure supply voltage ranges on both ports fall within the specified 1.2 V to 5.5 V limits for proper operation.

Selection Notes

Select this component when active bus holding is required to manage floating inputs without external resistors. Choose the GS package for its specific XSON6 dimensions (1.0 x 1.0 mm). Verify compatibility with target voltage domains ranging from 1.2 V to 5.5 V on both sides of the translator.

Part Context

This part belongs to the 74LVCH1T45 family of dual-supply translating transceivers. The 'GS' suffix indicates the SOT1202 package type, which is an extremely thin small outline package with no leads. This family provides bidirectional translation capabilities suitable for interfacing different logic voltage levels in compact electronic designs.

Replacement Considerations

The 74LVC1T45GS,132 serves as a direct substitute but lacks the active bus hold feature found in the LVCH variant.