SN74LVCH16245AGRDR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVCH16245A is a 16-bit (dual-octal) noninverting bus transceiver designed for asynchronous communication between data buses. It operates from a supply voltage of 1.65 V to 3.6 V and features inputs that accept voltages up to 5.5 V, supporting mixed-mode signal operation in 5-V input/output environments with 3.3-V VCC. The device provides a maximum propagation delay of 4 ns at 3.3 V and includes active bus-hold circuitry on data inputs to maintain valid logic states without external resistors. It supports Ioff for partial-power-down mode and live insertion.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Operates from 1.65 V to 3.6 V with 5.5 V tolerant inputs
• Active bus-hold circuitry eliminates need for external pullup or pulldown resistors
• Ioff feature supports live insertion, partial-power-down mode, and back-drive protection
• Latch-up performance exceeds 250 mA per JESD 17

Buffers, Drivers, Receivers, Transceivers Applications

• Electronic Points of Sale
• Test and Measurement
• Wearable Health and Fitness Devices
• Tablets

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant required, as the SN74LVCH16245A family includes TSSOP, TVSOP, and SSOP options. Confirm the ordering suffix matches the desired physical footprint and reel specifications. Ensure compatibility with system voltage levels, particularly regarding the 5.5 V input tolerance when interfacing with legacy 5-V logic buses.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring bidirectional level translation between 1.65-V to 3.6-V systems and 5-V peripherals. The dual-octal architecture allows configuration as two independent 8-bit transceivers or one 16-bit unit. Consider the 5.5 V input tolerance for direct interface with higher voltage sources without additional level shifting components.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to Texas Instruments' Widebus Family, designed for high-density bus applications. It is part of the LVCH series, which offers low voltage CMOS technology with enhanced drive capabilities and mixed-signal compatibility. The SN74LVCH16245A serves as a standard solution for managing data flow across multiple voltage domains in portable and industrial electronics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVCH16245ADGGR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

Active bus-hold circuitry holds unused or undriven data inputs at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What is the function of the Ioff feature?

The Ioff circuitry disables the outputs when VCC is 0 V, preventing damaging current backflow through the device during power-down or partial-power-down modes.