SN74ALVCH162835DL

Overview

The SN74ALVCH162835 is an 18-bit universal bus driver with 3-state outputs designed for 1.65-V to 3.6-V VCC operation. It features active bus-hold circuitry on data inputs and equivalent 26-Ω series resistors at the output port to reduce overshoot and undershoot. The device operates in transparent mode when the latch-enable (LE) input is high, while data is latched on the low-to-high transition of the clock (CLK) input when LE is low. Output enable (OE) controls data flow from A to Y.

Feature Summary

• Active bus-hold circuitry eliminates the need for external pullup or pulldown resistors on data inputs.
• Output port includes equivalent 26-Ω series resistors to reduce signal overshoot and undershoot without requiring external components.
• ESD protection exceeds 2000 V per MIL-STD-883, Method 3015.

Applications

• High-density data buffering
• Clock distribution
• Bus-oriented transfers

Procurement Notes

Verify the specific package variant required, as the DL suffix denotes a plastic shrink small-outline package. Confirm RoHS compliance status and moisture sensitivity level ratings against current project specifications. Ensure supply voltage ranges align with system requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring wide voltage compatibility between 1.65 V and 3.6 V. The integrated bus-hold feature simplifies design by removing external pull-up or pull-down resistors. Consider the 56-pin SSOP package dimensions for PCB layout constraints.

Part Context

This device belongs to the Texas Instruments Widebus family and utilizes the EPIC submicron process. It is characterized for operation from -40°C to 85°C. The product is available in multiple package options including plastic shrink small-outline (DL), thin shrink small-outline (DGG), and thin very small-outline (DGV).

Replacement Considerations

SN74ALVCH162835DGGR

FAQ

How does the device handle unused or floating data inputs?

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level, eliminating the need for external pullup/pulldown resistors.

What is the function of the latch-enable (LE) and clock (CLK) inputs?

When LE is low, the A data is stored in the latch/flip-flop on the low-to-high transition of CLK. When LE is high, the device operates in transparent mode.