74LVCH16901DGGRE4

Universal Bus Functions Overview

The SN74LVCH16901 is an 18-bit universal bus transceiver with parity generators and checkers, designed for 1.65 V to 3.6 V operation. It combines D-type latches and flip-flops for transparent, latched, or clocked modes. The device supports mixed-mode signal operation on all ports, accepting inputs up to 5.5 V while operating at lower supply voltages. It features independent clock, latch-enable, and dual 9-bit clock-enable inputs. Parity functions can be enabled via the SEL input to generate or check parity from two 8-bit data buses in either direction.

Universal Bus Functions Feature Summary

• Combines D-type latches and flip-flops for flexible operation in transparent, latched, or clocked modes
• Simultaneously generates and checks parity with selectable odd/even options
• Supports mixed-mode signal operation allowing 5-V input/output voltage with 3.3-V VCC
• Includes active bus-hold circuitry to eliminate the need for external pullup/pulldown resistors

Universal Bus Functions Applications

• Mixed-mode signal systems requiring 3.3-V/5-V translation
• Data buses requiring integrated parity generation and error checking
• Applications needing partial-power-down mode support via Ioff circuitry

Universal Bus Functions Procurement Notes

Verify component status as Not Recommended For New Designs (NRND). Confirm availability through authorized distributors for existing production runs. Ensure design-in compliance with Texas Instruments standard warranty terms and critical application disclaimers before finalizing procurement plans.

Universal Bus Functions Selection Notes

Select this component when an 18-bit registered transceiver with integrated parity logic is required. It is suitable for designs needing simultaneous parity generation and checking across dual 8-bit buses. Consider its 1.65 V to 3.6 V operating range and 5.5 V tolerant inputs for mixed-voltage system interfaces.

Universal Bus Functions Part Context

This device belongs to the Texas Instruments Widebus+ family of universal bus transceivers. It provides a dual 9-bit to dual 9-bit parity transceiver solution with registers. The SN74LVCH16901 integrates parity functionality directly into the transceiver architecture, reducing external component count compared to separate parity chips.

Universal Bus Functions Replacement Considerations

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