SN74ALVCH162835VR

Overview

The SN74ALVCH162835VR is an 18-bit universal bus driver featuring 3-state outputs, designed for operation within a supply voltage range of 1.65 V to 3.6 V. It utilizes the EPIC submicron CMOS process and belongs to the Widebus family. The device incorporates active bus-hold circuitry on data inputs to eliminate external pullup or pulldown resistors. Internal equivalent series resistors are integrated into the output port to reduce signal overshoot and undershoot without requiring external components.

Feature Summary

• Integrated active bus-hold circuitry maintains valid logic levels on unused or floating data inputs, removing the need for external pullup or pulldown resistors.
• Output ports include internal equivalent series resistors that minimize signal overshoot and undershoot, eliminating the requirement for external series resistors.
• High electrostatic discharge (ESD) protection capabilities exceed specified MIL-STD-883 standards and machine model requirements.

Applications

• High-density memory buffer applications
• Clock buffering and distribution circuits
• Bus-oriented transitions in digital systems

Procurement Notes

Verify the specific package designation VR corresponds to the Thin Very Small-Outline (DGV) configuration when sourcing. Confirm RoHS compliance status and Moisture Sensitivity Level ratings against current manufacturer documentation prior to integration. Ensure design margins account for the recommended operating temperature range and absolute maximum voltage limits defined in the official datasheet.

Selection Notes

Select this component for designs requiring wide voltage compatibility between 1.65 V and 3.6 V with high drive capability. The inclusion of bus-hold functionality simplifies board layout by negating the need for additional passive components on input lines. Consider the TVSOP package dimensions for space-constrained surface-mount applications requiring 18-bit parallel data handling.

Part Context

This device is part of Texas Instruments' ALVCH logic family, characterized by low voltage operation and enhanced performance via implanted CMOS technology. It serves as a universal bus driver within the broader 74-series logic ecosystem, providing standardized interface solutions for modern digital architectures requiring robust signal integrity and flexible voltage domains.

Replacement Considerations

The SN74ALVCH162835DGGR is listed as obsolete; verify current availability of the SN74ALVCH162835VRG4 variant for new designs. Cross-reference pinouts and electrical characteristics carefully when substituting other 18-bit drivers from different manufacturers.