74LVCH16245AEV,551

Overview

The Nexperia 74LVCH16245AEV,551 is a discontinued 16-bit bus transceiver with 3-state outputs. It supports a supply voltage range of 1.2 V to 3.6 V and features overvoltage tolerant inputs up to 5.5 V. The device includes IOFF circuitry for partial power-down applications and bus hold functionality on data inputs. It operates within an ambient temperature range of -40 °C to +125 °C.

Feature Summary

• Bus hold circuitry on all data inputs eliminates the need for external pull-up resistors.
• IOFF circuitry disables outputs to prevent damaging backflow current during partial power-down.
• Schmitt-trigger action at all inputs provides tolerance for slower input rise and fall times.

Applications

• Mixed 3.3 V and 5 V environments
• Partial power-down applications

Procurement Notes

This component is officially obsolete and no longer in production. Verify end-of-life status through official Nexperia channels before design finalization. Sourcing is restricted to existing stock or secondary markets; confirm authenticity and storage conditions carefully as standard manufacturing support has ceased.

Selection Notes

Select this part only if legacy compatibility is required. For new designs, consider active alternatives such as the 74LVC16245ADGG or 74LVCH16245ADGG which offer identical electrical specifications and pinouts but remain in active production with guaranteed supply availability.

Part Context

The 74LVCH16245A belongs to the LVCH logic family, designed for low-voltage CMOS applications. This specific variant was manufactured in the EV package configuration. It serves as a bidirectional translator compatible with standard MULTIBYTE flow-through architectures used in high-density digital systems.

Replacement Considerations

Verify pinout compatibility with 74LVC16245ADGG or 74LVCH16245ADGG. Confirm that the replacement package (TSSOP48) fits the existing PCB footprint and thermal requirements.