74LVCH16244ADL,112

Overview

The Nexperia 74LVCH16244ADL,112 is a 16-bit buffer and line driver featuring 3-state outputs. It operates within a supply voltage range of 1.2 V to 3.6 V and provides 5 V tolerant inputs and outputs for interfacing with 5 V logic systems. The device includes four independent output enables (1OE, 2OE, 3OE, 4OE) controlling groups of four outputs each. Inputs utilize Schmitt-trigger action to tolerate slow rise and fall times. The LVCH variant incorporates bus hold circuitry on all data inputs to maintain states without external pull-up resistors.

Feature Summary

• Provides 5 V tolerant inputs and outputs for mixed voltage environments
• Includes IOFF circuitry to prevent backflow current during partial power-down
• Features Schmitt-trigger inputs for noise immunity against slow signal transitions
• Integrates bus hold functionality on data inputs to eliminate external pull-up requirements

Applications

• Mixed 3.3 V and 5 V system translation
• Partial power-down applications requiring IOFF protection
• High-speed data buffering in low-voltage digital circuits

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the datasheet revision history indicates that SSOP packages were removed from this product family. Confirm the temperature range specification aligns with the application environment. Ensure the component status is verified as active production rather than obsolete or preliminary data before finalizing procurement plans.

Selection Notes

Select this component when 5 V tolerance is required alongside low-voltage operation between 1.2 V and 3.6 V. The LVCH designation specifically adds bus hold features compared to the standard LVC version. Verify that the 3-state output configuration meets the system's bus isolation needs. Consider the thermal derating characteristics if operating near the maximum ambient temperature limits.

Part Context

This part belongs to the Nexperia 74LVC/LVCH16244A family of 16-bit buffers. The 'H' in LVCH denotes the inclusion of bus hold circuitry on the data inputs. While earlier revisions included SSOP packages, current documentation lists TSSOP and TVSOP variants. This component serves as a critical interface element for bridging different logic voltage levels in complex digital designs.

Replacement Considerations

The 74LVC16244ADGG is a compatible alternative within the same family but lacks the bus hold feature found in the LVCH variant. Verify pinout compatibility and ensure the replacement supports the required 5 V input/output tolerance specifications.