SN74LVTH240DBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH240DBR is an octal buffer and line driver from the Texas Instruments LVTH series, designed for 3.3-V ABT operation with 3-state outputs. It supports mixed-mode signal environments, allowing 5-V input and output voltages with a 3.3-V VCC supply. The device operates on unregulated battery power down to 2.7 V. Key electrical parameters include a high-level output current of -32 mA and a low-level output current of 64 mA at 3.3 V. Propagation delay is typically 2.2 ns at VCC = 3.3 V. It features bus hold circuitry on data inputs and Ioff support for hot insertion.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation by interfacing 5-V systems with 3.3-V VCC environments
• Provides active bus-hold circuitry on data inputs to maintain valid logic states without external resistors
• Includes Ioff and power-up 3-state capabilities to prevent damaging backflow currents during hot insertion

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal buffering between 5-V and 3.3-V logic domains
• Unregulated battery-powered system interfaces
• Hot-insertion applications requiring controlled power-up states

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'DBR' corresponds to the SSOP-20 package and tape-and-reel quantity of 2000 units. Confirm the RoHS status and lead finish (NIPDAU) match project requirements. Ensure the operating temperature range of -40°C to 85°C is suitable for the intended environment. Cross-reference the manufacturer part number SN74LVTH240DBR with official TI documentation to confirm current production status and availability.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with 3-state outputs is required for 3.3-V ABT logic families. It is suitable for designs needing TTL interface compatibility with 5-V systems while operating at lower voltages. Consider the SSOP-20 package constraints and the specific current drive requirements of -32 mA (high) and 64 mA (low). Verify that the propagation delay and power consumption characteristics align with the system's performance targets.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74LVTH240 family of octal buffers/drivers. It is part of Texas Instruments' Low-Voltage Transceiver High-Speed CMOS technology, optimized for 3.3-V operations. The DBR suffix specifically denotes the SSOP-20 package variant supplied in a tape-and-reel format. It shares functional similarities with other LVTH devices but is distinct in its octal configuration and specific pinout arrangement.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH240DW: Same logical function and specifications, but housed in a SOIC-20 (DW) package instead of SSOP-20. Verify footprint compatibility before substitution.