74LVC244AQ20-13

Overview

The 74LVC244AQ20-13 is an octal buffer and line driver manufactured by Diodes Incorporated, featuring two independent 4-bit channels with separate output-enable (OE) inputs. It operates within a supply voltage range of 1.65V to 3.6V and provides 3-state outputs. The device supports partial power-down applications via IOFF circuitry, which prevents damaging current backflow when powered down. Inputs are tolerant to 5.5V, enabling mixed-voltage environments. It is housed in a V-QFN4525-20 package.

Feature Summary

• Provides two independent 4-bit non-inverting buffers with separate OE control for each channel
• Supports partial power-down operation through integrated IOFF circuitry to prevent backflow
• Features Schmitt trigger action at all inputs for improved noise immunity
• Inputs accept up to 5.5V allowing compatibility with 3.3V or 5V driven signals

Applications

• Bus driving
• Power down signal isolation
• General purpose logic

Procurement Notes

Verify the specific suffix 'Q20' corresponds to the V-QFN4525-20 package type rather than TSSOP-20. Confirm RoHS compliance and Halogen-free status requirements match project specifications. Ensure ESD handling procedures align with JESD 22 standards during assembly.

Selection Notes

Select this component when designing systems requiring 8-channel buffering with mixed-voltage input tolerance. The V-QFN4525-20 package offers a compact footprint suitable for space-constrained PCB layouts. Verify that the 1.65V to 3.6V operating range matches the target system's power supply rails.

Part Context

This part belongs to the 74LVC244A family of octal buffers. It shares functional characteristics with other LVC series devices but is distinguished by its specific QFN-20 packaging and surface-mount configuration designed for automated assembly processes.

Replacement Considerations

Direct substitutes include 74LCX244BQX from onsemi and 74LVC244ABQ,115 from Nexperia USA Inc.