SN74AVC16269DGGR

Overview

The SN74AVC16269DGGR is a 12-bit to 24-bit registered bus exchanger 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 overvoltage-tolerant inputs and outputs, supporting mixed-voltage-mode data communications. It includes Ioff circuitry for partial-power-down mode operation and latch-up performance exceeding 100 mA per JESD 78, Class II.

Feature Summary

• Dynamic Output Control (DOC) circuit dynamically changes output impedance to reduce noise without speed degradation
• Overvoltage-tolerant inputs and outputs allow mixed-voltage-mode data communications
• Ioff circuitry supports partial-power-down mode operation to prevent damaging current backflow
• Registered control terminals ensure all transactions are synchronous with the clock input

Applications

• Multiplexing two separate ports onto a single port
• Demultiplexing from a single port to two separate ports
• Interface between synchronous DRAMs and high-speed microprocessors

Procurement Notes

Verify the specific package variant, as the DGGR suffix indicates a TSSOP-56 tape and reel configuration. Confirm that the design accounts for the requirement to apply a clock pulse early during power-up to establish output states. Ensure pullup resistors on OE lines match driver sinking capabilities to maintain proper high-impedance states.

Selection Notes

Select this component when designing systems requiring flexible bus architecture between different voltage domains. The DOC feature is advantageous for reducing electromagnetic interference in high-speed digital environments. Consider the registered control inputs if synchronous timing alignment across multiple data paths is required for system stability.

Part Context

This device belongs to the Widebus family and utilizes the EPIC submicron process technology. It is part of the SN74AVC series, which focuses on low-voltage, high-speed logic solutions. The registered bus exchanger function distinguishes it from standard buffers or transceivers by providing internal storage registers for data management.

Replacement Considerations

SN74ALVCH16269DGGR