SN74AUC16501DGGR

Overview

The SN74AUC16501DGGR is an 18-bit universal bus transceiver from the Widebus family, designed for sub-1-V operation with a supply voltage range of 0.8 V to 2.7 V. It features Ioff support for partial-power-down mode and is optimized for 1.8-V operation while remaining 3.6-V I/O tolerant. The device provides data flow control via output-enable, latch-enable, and clock inputs, supporting both transparent and latched modes. It operates within a temperature range of -40°C to 85°C and utilizes a 56-pin TSSOP package.

Feature Summary

• Supports partial-power-down mode through integrated Ioff circuitry that disables outputs to prevent damaging backflow currents.
• Provides bidirectional data flow control using complementary output-enable signals alongside latch-enable and clock inputs.
• Features high electrostatic discharge protection exceeding specified human-body, machine model, and charged-device model standards.

Applications

• Mixed-mode signal operations requiring 3.6-V I/O tolerance
• Partial-power-down applications in portable electronics
• Sub-1-V logic interface circuits

Procurement Notes

Verify the specific ordering suffix DGGR corresponds to the tape and reel packaging format required for your assembly line. Confirm that the component meets RoHS compliance standards applicable to your region. Ensure that all unused inputs are properly terminated to VCC or GND during operation to maintain device functionality and stability.

Selection Notes

Select this component when designing systems requiring wide voltage compatibility between 0.8 V and 2.7 V. It is suitable for applications needing robust ESD protection and low power consumption. Consider its 18-bit width for high-density data bus interfaces where space efficiency is critical.

Part Context

This device belongs to Texas Instruments' Widebus family, which focuses on high-density bus solutions. It complements other logic families by offering specialized low-voltage operation capabilities. The SN74AUC16501 series is engineered to bridge different voltage domains efficiently.

Replacement Considerations

SN74AUC16501DGV

FAQ

How does the device handle partial-power-down scenarios?

The integrated Ioff circuitry automatically disables the outputs when the device is powered down, preventing current backflow through the part.

What controls the direction of data flow?

Data flow is managed by complementary output-enable (OEAB and OEBA) signals, along with latch-enable and clock inputs for each direction.