74ALVTH16373ZQLR

Overview

The SN74ALVTH16373ZQLR is a 16-bit transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It utilizes Advanced BiCMOS Technology (ABT) for 2.5-V and 3.3-V operation, supporting mixed-mode signal environments with 5-V tolerant inputs. The device features high drive capabilities of -24/24 mA at 2.5 V and -32/64 mA at 3.3 V. It incorporates bus-hold circuitry to prevent floating inputs and Auto3-State functionality to eliminate bus current loading when the output exceeds VCC + 0.5 V. The ZQLR suffix indicates a MicroStar Junior BGA package with 56 pins.

Feature Summary

• Supports mixed-mode signal operation allowing 5-V input and output voltages with 2.3-V to 3.6-V VCC supply.
• Power-off state disables outputs to permit live insertion without interface components.
• Bus-hold circuitry maintains valid logic levels on unused or floating data inputs.
• Auto3-State feature prevents driver conflict during power-up and power-down sequences.

Applications

• Implementing buffer registers in digital systems
• Configuring I/O ports for bidirectional data transfer
• Serving as working registers in memory architectures

Procurement Notes

Verify the specific ordering suffix ZQLR corresponds to the MicroStar Junior BGA package configuration. Confirm that the required pin count and thermal characteristics align with the target PCB layout constraints. Ensure compatibility with the intended voltage domain and temperature range specifications before finalizing procurement orders.

Selection Notes

Select this component for designs requiring 16-bit latching with high-drive 3-state outputs in low-voltage applications. The ABT technology provides low static power dissipation suitable for battery-operated devices. Consider the package dimensions and thermal impedance when designing the heat dissipation strategy for the printed circuit board.

Part Context

This device belongs to the ALVTH16373 family of 16-bit transparent D-type latches. It is part of Texas Instruments' portfolio of advanced BiCMOS logic products designed for high-speed data handling. The family supports both 2.5-V and 3.3-V supply voltages, making it versatile for various system architectures.

Replacement Considerations

SN74ALVTH16373DLG4

FAQ

How does the device handle floating 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 or pulldown resistors.

What is the function of the Auto3-State feature?

Auto3-State eliminates bus current loading when the output voltage exceeds VCC + 0.5 V, preventing driver conflicts during power transitions.