74LVCH245APW,118

Overview

The Nexperia 74LVCH245APW,118 is an octal bus transceiver with 3-state outputs housed in a TSSOP20 package. It operates within a supply voltage range of 1.2 V to 3.6 V and supports overvoltage tolerant inputs up to 5.5 V. The device features Schmitt-trigger inputs for noise immunity and IOFF circuitry for partial power-down protection. Propagation delay ranges from 1.5 ns to 16.9 ns depending on voltage, with output skew time guaranteed at 1.5 ns maximum.

Feature Summary

• Bus hold functionality on all data inputs
• IOFF circuitry prevents backflow current during power-down
• Schmitt-trigger action ensures tolerance to slow input transitions
• Direct interface capability with TTL levels

Applications

• Mixed 3.3 V and 5 V environment translation
• Partial power-down applications requiring backflow prevention
• Driving bus lines or buffer memory address registers

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the LVCH designation is selected for bus hold features rather than standard LVC. Ensure environmental compliance requirements align with RoHS standards before finalizing procurement orders.

Selection Notes

Select this component when low-power CMOS operation is required alongside direct TTL interfacing capabilities. The inclusion of bus hold circuits simplifies design by eliminating external pull-up or pull-down resistors. Verify that the operating temperature range meets system specifications for industrial environments.

Part Context

This part belongs to the 74LVC/LVCH logic family designed for low-voltage digital applications. It serves as an alternative to higher voltage transceivers in modern portable electronics. The TSSOP20 package provides space-efficient mounting for dense printed circuit board layouts.

Replacement Considerations

74LVC245APW,118 lacks the bus hold feature found in the LVCH variant.