74LVCH2T45GM,125

Translators, Level Shifters Overview

The Nexperia 74LVCH2T45GM,125 is a dual-bit translating transceiver with 3-state outputs. It features two 2-bit input-output ports (nA and nB), a direction control input (DIR), and dual supply pins VCC(A) and VCC(B). Both supplies operate between 1.2 V and 5.5 V, enabling translation between low voltage nodes including 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V. Pins nA and DIR reference VCC(A), while nB references VCC(B). The device supports partial power-down via I_OFF circuitry and includes active bus hold for unused inputs.

Translators, Level Shifters Feature Summary

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

Translators, Level Shifters Applications

• Bidirectional level translation between mixed voltage domains
• Partial power-down applications requiring isolation
• Systems utilizing multiple low voltage nodes

Translators, Level Shifters Procurement Notes

Verify the specific GM package variant against the SOT1116 XSON8 footprint requirements. Confirm that the LVCH series designation matches the required bus hold functionality compared to standard LVC versions. Ensure the ordering suffix aligns with the intended temperature range and reel specifications.

Translators, Level Shifters Selection Notes

Select this component when active bus holding is necessary to stabilize floating inputs without external resistors. The dual-supply architecture allows independent voltage domain management. Verify that the 3-state output capability meets system bus isolation requirements.

Translators, Level Shifters Part Context

This part belongs to the 74LVC/LVCH2T45 family of dual supply translating transceivers. The LVCH variant specifically incorporates active bus hold circuitry, distinguishing it from the standard LVC version which lacks this feature. Both share identical pinouts and functional logic but differ in input stabilization behavior.

Translators, Level Shifters Replacement Considerations

The 74LVC2T45GM,125 serves as a direct substitute but lacks the active bus hold feature found in the LVCH variant.