74LVCH162245APAG

Overview

The Renesas 74LVCH162245APAG is a 16-bit bus transceiver featuring integrated 30 Ohm series termination resistors and 3-state outputs. It operates within a supply voltage range of 1.2 V to 3.6 V, supporting mixed 3.3 V and 5 V environments with overvoltage tolerant inputs up to 5.5 V. The device includes two output enables and two direction control inputs, allowing configuration as two 8-bit or one 16-bit transceiver. Schmitt-trigger inputs ensure tolerance for slow rise/fall times, while I_OFF circuitry prevents backflow during partial power-down.

Feature Summary

• Integrated 30 Ohm series termination resistors for signal integrity
• Overvoltage tolerant inputs compatible with 5 V devices
• I_OFF circuitry for safe partial power-down operation
• Bus hold functionality on data inputs eliminates external pull-ups

Applications

• Mixed voltage level translation between 3.3 V and 5 V systems
• High-speed data flow-through architectures requiring termination
• Partial power-down applications in portable electronics
• Systems requiring protection against backflow current during power loss

Procurement Notes

Verify the specific suffix 'APAG' against official Renesas documentation to confirm package type and temperature grade. Ensure compatibility with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 for intended voltage ranges. Confirm that the required I_OFF and bus hold features are active for the specific variant, as these are key differentiators from standard LVC counterparts.

Selection Notes

Select this component when 30 Ohm termination is required directly on-chip to reduce board space and improve signal quality at high speeds. It is suitable for designs needing robust 5 V tolerance despite lower core voltages. Consider the LVCH series specifically for its enhanced drive strength and termination compared to standard LVC parts. Verify thermal performance if operating near the upper temperature limits.

Part Context

This part belongs to the 74LVCH162245A family, which extends the standard 74LVC162245A by adding integrated termination resistors. While similar to the IDT/Renesas 74LVC162245APVG8, the LVCH variant provides superior signal integrity through built-in termination. It serves as a bridge between low-voltage logic cores and legacy 5 V peripherals in complex mixed-signal systems.

Replacement Considerations

Direct substitutes include Nexperia 74LVCH162245ADGG. Standard LVC variants like 74LVC162245A lack the integrated 30 Ohm resistors and may require external components.