74LVCH1T45GN,132

Overview

The Nexperia 74LVCH1T45GN,132 is a single-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 1-bit input-output ports (A and B), a direction control input (DIR), and dual supply pins (VCC(A) and VCC(B)). Pins A and DIR are referenced to VCC(A), while pin B is referenced to VCC(B). Active bus hold circuitry holds unused or floating data inputs at a valid logic level.

Feature Summary

• Active bus hold circuitry maintains unused or floating data inputs at a valid logic level
• IOFF circuitry disables the output to prevent damaging backflow current during partial power-down applications
• Suspend mode places both ports in high-impedance OFF-state when either supply voltage is at GND level

Applications

• Partial power-down applications requiring protection against backflow current
• Bidirectional level translation between mixed voltage domains
• Systems utilizing suspended power states where high-impedance isolation is required

Procurement Notes

Verify that the GN suffix corresponds to the XSON6 package with dimensions 0.9 mm by 1.0 mm by 0.35 mm. Confirm the marking code is X5 for this specific variant. Ensure the component meets the specified temperature range of -40 °C to +125 °C. Check compliance with JEDEC standards JESD8-7, JESD8-5, JESD8C, and JESD36 for the intended operating voltage levels.

Selection Notes

Select this component when active bus hold functionality is required to stabilize floating inputs. Choose this part over standard variants if partial power-down protection via IOFF circuitry is necessary. Verify that the maximum data rates align with the specific voltage translation requirements of the application design.

Part Context

This device belongs to the 74LVC/LVCH family of dual supply translating transceivers. It shares functional similarities with the 74LVC1T45 but includes additional active bus hold circuitry. The GN designation identifies the specific extremely thin small outline package without leads, distinguishing it from other package options like TSSOP6 or XSON6 variants with different body dimensions.

Replacement Considerations

The 74LVC1T45GN,132 serves as a direct substitute lacking the bus hold feature. Other compatible packages within the same series include 74LVCH1T45GW, 74LVCH1T45GM, and 74LVCH1T45GS.