SN74ALVCH16501KR

Overview

The SN74ALVCH16501KR is an 18-bit universal bus transceiver from the Texas Instruments ALVCH family, housed in a VFBGA package. It operates within a supply voltage range of 1.65 V to 3.6 V and supports data rates up to 150 MHz. The device features 3-state outputs with ±24-mA drive capability at 3.3 V. Propagation delay is specified as low as 3.9 ns at 3.3 V. Active bus-hold circuitry eliminates the need for external pullup or pulldown resistors on data inputs.

Feature Summary

• Combines D-type latches and flip-flops for transparent, latched, or clocked operation
• Active bus-hold circuitry maintains valid logic states on unused inputs
• ESD protection exceeds JESD 22 standards for human-body and machine models

Applications

• High-density memory buffer applications
• Clock drivers and buffered oscillators
• Multiplexer demultiplexer and routing switches

Procurement Notes

Verify the specific KR suffix indicates the VFBGA package configuration during procurement. Confirm that the component meets RoHS compliance requirements for your assembly process. Ensure proper handling procedures are followed due to the fine-pitch surface-mount packaging. Validate that the operating temperature range aligns with your system's thermal design specifications.

Selection Notes

Select this component when designing systems requiring wide voltage compatibility between 1.65 V and 3.6 V. The 18-bit width makes it suitable for high-bandwidth data transfer paths. Consider the low propagation delay for timing-critical interfaces. The integrated bus-hold feature simplifies board layout by removing external resistor networks.

Part Context

This device belongs to the Texas Instruments Widebus family of universal bus transceivers. It integrates both latch and flip-flop functionality into a single 18-bit architecture. The product line is designed for high-speed digital signal routing across mixed-voltage domains.

Replacement Considerations

SN74ALVCH16501DGGR

FAQ

How does the device handle unused data inputs?

The device includes active bus-hold circuitry that automatically holds unused or undriven inputs at a valid logic state without requiring external pullup or pulldown resistors.

What control signals manage data flow direction?

Data flow is controlled by output-enable (OEAB/OEBA), latch-enable (LEAB/LEBA), and clock (CLKAB/CLKBA) inputs, allowing operation in transparent, latched, or clocked modes.