74ALVCH16373DLRG4

Overview

The SN74ALVCH16373DLRG4 is a 16-bit transparent D-type latch with 3-state outputs from the Texas Instruments Widebus family. It operates from 1.65 V to 3.6 V and features a maximum propagation delay of 3.6 ns at 3.3 V. The device provides ±24-mA output drive capability and includes bus hold on data inputs to eliminate external pullup/pulldown resistors. Latch-up performance exceeds 250 mA per JESD 17, and ESD protection exceeds 2000 V via the human-body model. It is housed in a 48-pin SSOP (DL) package.

Feature Summary

• Transparent latching functionality allows Q outputs to follow D inputs when latch-enable is high, capturing data when latch-enable goes low.
• Buffered output-enable input controls three-state operation, placing outputs in normal logic states or high-impedance mode without affecting internal latch operations.
• Active bus-hold circuitry maintains unused or undriven inputs at valid logic states, removing the need for external pullup or pulldown resistors.

Applications

• Implementing buffer registers
• Configuring I/O ports
• Driving bidirectional buses
• Serving as working registers

Procurement Notes

Verify the specific ordering suffix 'G4' indicates lead-free compliance and RoHS standards during procurement. Confirm the DL package designation matches the required 48-pin SSOP form factor for your PCB layout. Ensure the active status aligns with long-term availability requirements for new designs.

Selection Notes

Select this component for applications requiring wide voltage operation between 1.65 V and 3.6 V. The ALVCH series offers faster switching speeds compared to standard LVCH variants. Consider the 3-state outputs for bus sharing applications where multiple devices connect to common lines.

Part Context

This part belongs to the Texas Instruments Widebus family, designed for high-density digital systems. The SN74ALVCH16373 serves as a foundational building block for parallel data storage and transfer in mixed-voltage environments.

Replacement Considerations

Direct substitutes include SN74ALVCH16373DGGR and SN74ALVCH16373DLR. Verify pin compatibility and electrical specifications before substitution.