SN74LVCH16901DGGR

Overview

The SN74LVCH16901DGGR is an 18-bit universal bus transceiver with parity generators and checkers, manufactured by Texas Instruments. It operates from a supply voltage of 1.65 V to 3.6 V and accepts input voltages up to 5.5 V. The device features a maximum propagation delay of 5.4 ns at 3.3 V and supports mixed-mode signal operation on all ports. It includes independent clock, latch-enable, and dual 9-bit clock-enable inputs for flexible data handling.

Feature Summary

• Combines D-type latches and flip-flops for transparent, latched, or clocked modes
• Simultaneously generates and checks parity with selectable odd/even options
• Supports partial-power-down mode via Ioff circuitry
• Includes active bus-hold circuitry to eliminate external pullup/pulldown resistors

Applications

• Mixed-mode signal operation in 3.3-V/5-V system environments
• Data integrity verification using built-in parity generation and checking
• Partial-power-down applications requiring output isolation during power loss

Procurement Notes

Verify the component status as Not Recommended For New Designs (NRND) before implementation. Confirm that the TSSOP-64 package dimensions align with the PCB footprint requirements. Ensure design compliance with the specified operating temperature range of -40°C to +85°C. Review the latest Package Option Addendum for any updates regarding lead finish or eco-plan classifications.

Selection Notes

Select this component when 18-bit bidirectional data transfer with integrated error detection is required. It is suitable for designs needing simultaneous parity generation and checking across two 8-bit buses. Consider the 5.5 V input tolerance if interfacing with legacy 5-V logic levels while operating at lower supply voltages.

Part Context

This device belongs to the Texas Instruments Widebus+ family and utilizes UBT technology. It integrates registered transceiver functionality with advanced parity features. The SN74LVCH16901DGGR provides a compact solution for high-density digital systems requiring robust data transmission and error monitoring capabilities within a single integrated circuit.

Replacement Considerations

No public confirmed substitute part numbers are available.