SN74AVC16835DGVR

Overview

The SN74AVC16835DGVR is an 18-bit universal bus driver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 1.2 V to 3.6 V, specifically designed for 1.65 V to 3.6 V applications. The device features Dynamic Output Control (DOC) circuitry that dynamically adjusts output impedance to reduce noise without degrading speed. It supports mixed-voltage-mode data communications through overvoltage-tolerant inputs and outputs. The component includes Ioff circuitry for partial-power-down mode operation and provides ESD protection exceeding 2000-V human-body model standards.

Feature Summary

• Implements Dynamic Output Control (DOC) circuitry to lower output impedance during signal transitions for effective load driving, then raises impedance to reduce electromagnetic noise.
• Features overvoltage-tolerant inputs and outputs to facilitate mixed-voltage-mode data communications across different logic levels.
• Includes dedicated Ioff circuitry to disable outputs and prevent damaging current backflow when the device is in a powered-down state.
• Provides high electrostatic discharge (ESD) protection capabilities exceeding JESD 22 standards for both human-body and machine models.

Applications

• Mixed-voltage data communication interfaces
• Partial-power-down mode systems requiring backflow prevention
• High-speed universal bus drivers

Procurement Notes

Verify the specific ordering suffix 'DGVR' corresponds to the TVSOP-56 package and tape-and-reel packaging configuration. Confirm the operating temperature range matches the -40°C to 85°C specification required for your application environment. Ensure input pins are tied to VCC or GND to maintain proper device operation as specified in the datasheet recommendations.

Selection Notes

Select this component when an 18-bit wide bus interface is required with mixed-voltage compatibility. The DOC feature makes it suitable for applications prioritizing noise reduction alongside high-speed performance. Consider the TVSOP-56 package constraints and the 1.2 V to 3.6 V supply voltage flexibility when designing power rails.

Part Context

This part belongs to the SN74AVC16835 family of universal bus drivers from Texas Instruments. It is part of the Widebus family, designed for high-density digital interfacing. The DGVR suffix indicates a TVSOP package variant supplied in a tape-and-reel format for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

How does the DOC circuit affect output drive capability?

The DOC circuit initially lowers output impedance to provide high drive capability equivalent to standard outputs during transitions, then raises impedance to reduce noise.

What is the function of the Ioff circuitry?

The Ioff circuitry disables the outputs to prevent damaging current backflow through the device when it is powered down, supporting partial-power-down mode operation.