74LVC16245ADGGRG4

Overview

The SN74LVC16245A is a 16-bit bus transceiver with 3-state outputs 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/3.3-V VCC environments. The device includes Ioff circuitry for partial-power-down mode and back-drive protection. It functions as two 8-bit or one 16-bit transceiver with a maximum propagation delay of 4 ns at 3.3 V.

Feature Summary

• Supports mixed-mode signal operation allowing 5-V tolerant inputs with 3.3-V VCC
• Includes Ioff circuitry to disable outputs during power-down preventing back-drive current
• Configurable as two 8-bit or one 16-bit bidirectional transceiver

Applications

• Electronic Points of Sale
• Printers and Other Peripherals
• Motor Drives
• Wireless and Telecom Infrastructures
• Wearable Health and Fitness Devices

Procurement Notes

Verify the specific package type (TSSOP, TVSOP, or SSOP) and suffix against the orderable addendum. Confirm RoHS compliance and lead finish details such as NIPDAU. Ensure the operating temperature range matches the application requirements, typically -40°C to 125°C for this series. Cross-reference the manufacturer part number with the distributor catalog to ensure correct component identification.

Selection Notes

Select this component when interfacing buses with different voltage levels, specifically translating between 5-V logic and 3.3-V systems. The wide operating voltage range allows flexibility in low-voltage designs. Consider the high drive capability and fast edge rates; ensure layout accounts for potential ringing on light loads. Verify that unused inputs are properly biased to prevent undefined operational states.

Part Context

This device belongs to Texas Instruments' Widebus Family, characterized by high-density pin configurations for multi-bit data transmission. It is part of the LVC logic series, optimized for low-voltage CMOS applications. The SN74LVC16245A provides robust ESD protection exceeding JESD standards and latch-up performance exceeding 250 mA per JEDEC specification.

Replacement Considerations

SN74LVC16245ADGGR

FAQ

How does the Ioff feature function?

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

What is the maximum input voltage tolerance?

Inputs can be driven from either 3.3-V or 5-V devices, accepting voltages up to 5.5 V at any valid VCC.