SN74LVT244BDB

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVT244BDB is an octal buffer and line driver designed for low-voltage 3.3-V VCC operation, featuring TTL interface capability to a 5-V system environment. It supports unregulated battery operation down to 2.7 V. The device is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, data passes from the A inputs to the Y outputs; when OE is high, the outputs enter a high-impedance state. It includes Ioff and power-up 3-state support for hot insertion applications.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation with 5-V input and output voltages while operating at 3.3-V VCC
• Provides Ioff circuitry to disable outputs during power-down, preventing damaging current backflow
• Features power-up 3-state circuitry that places outputs in a high-impedance state during power transitions
• Includes latch-up performance exceeding 100 mA per JESD 78, Class II

Buffers, Drivers, Receivers, Transceivers Applications

• Hot-insertion applications requiring controlled power-up and power-down states
• Mixed-mode signal environments interfacing 3.3-V systems with 5-V components
• Unregulated battery operation scenarios supporting voltage down to 2.7 V

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DB' corresponds to the SSOP package type before procurement. Confirm RoHS compliance status and lead finish details via the manufacturer's official documentation. Ensure the selected variant matches the required tape and reel or tube packaging specifications for your assembly process.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring octal buffering with independent control over two groups of four outputs. Consider its compatibility with 5-V logic levels despite 3.3-V operation if mixed-voltage interfaces are necessary. Evaluate the need for hot-insertion protection features provided by the integrated Ioff and power-up 3-state mechanisms.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVT244B series of octal buffers and line drivers manufactured by Texas Instruments. It is part of the broader LVT logic family designed for low-voltage digital applications. The device serves as a standard solution for driving multiple lines in low-power digital systems requiring robust signal integrity and mixed-mode compatibility.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVT244BDBR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the SN74LVT244BDB handle hot-insertion?

It utilizes Ioff circuitry to disable outputs when powered down, preventing backflow, and power-up 3-state circuitry to ensure outputs remain high-impedance during power transitions.

What is the function of the OE inputs?

The device has two separate output-enable (OE) inputs. When an OE input is low, the corresponding group of four outputs is enabled; when high, those outputs enter a high-impedance state.