SN74LVCH244DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVCH244DW is an octal buffer and line driver from Texas Instruments, belonging to the LVCH logic series. It features eight non-inverting channels with three-state outputs, designed for low-voltage CMOS applications operating between 1.65 V and 3.6 V. The device supports mixed-mode signal operations, allowing 5-V tolerant inputs while powered by lower voltages. Packaged in a 20-pin SOIC (D) format, it provides high drive capability with output currents of ±24 mA. Key electrical characteristics include a propagation delay of approximately 5.9 ns at 3.3 V and a maximum static current of 40 µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation with 5-V tolerant inputs compatible with 3.3-V VCC systems
• Provides Ioff functionality to support partial-power-down mode and backflow protection
• Features three-state outputs that isolate disconnected buses when disabled

Buffers, Drivers, Receivers, Transceivers Applications

• Data bus-oriented memory and card interface circuits
• Clock drivers and buffering for high-speed digital systems
• Bidirectional bus translation between different voltage domains

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status and lead-free designation as required by your assembly process. Check for any recent product change notifications or lifecycle status updates directly from Texas Instruments before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring low-voltage operation with 5-V input tolerance. Ensure the application benefits from the Ioff feature for hot-insertion scenarios. Compare propagation delays and drive strengths against other LVCH variants if higher speed or different packaging options are needed for the specific PCB layout constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVCH244 family of octal buffers. It shares functional similarities with the SN74LVC244 but offers optimized performance for lower voltage ranges. The DW package denotes a standard 20-pin Small Outline Integrated Circuit. It serves as a critical interface component in modern embedded systems bridging legacy 5-V signals with contemporary low-voltage logic cores.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVCH244DR is a direct replacement variant offered in a smaller SOT-36 or similar reel-compatible package depending on the specific revision, maintaining identical electrical characteristics and pinout compatibility for board-level upgrades.