74LVQ373SJX

Latches Overview

The onsemi 74LVQ373SJX is a low-voltage octal transparent latch featuring three-state outputs, designed for bus-organized system applications. It operates within a supply voltage range of 2.0V to 3.6V and supports an operating temperature range from -40°C to +85°C. The device utilizes a 20-lead Small Outline Package (SOP) with EIAJ TYPE II dimensions. Key electrical characteristics include propagation delays ranging from 2.5ns to 18.0ns depending on load conditions, maximum quiescent supply current of 40.0µA, and high output drive capabilities with sink currents up to 12mA.

Latches Feature Summary

• Implements patented EMI reduction circuitry to minimize electromagnetic interference in low-power applications.
• Features improved latch-up immunity and guaranteed incident wave switching performance into 75Ω transmission lines.
• Provides four kilovolts minimum electrostatic discharge (ESD) immunity for enhanced robustness.

Latches Applications

• Bus-organized system data storage
• Low power/low noise 3.3V logic circuits
• High-speed digital signal latching

Latches Procurement Notes

Verify the specific package variant against the ordering code suffix. The 'SJ' designation indicates the 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide. Confirm that the 'X' suffix corresponds to tape and reel packaging requirements. Ensure compatibility with the required operating temperature range and voltage specifications before procurement.

Latches Selection Notes

Select this component for designs requiring low voltage operation at 3.3V with reduced power consumption. The device is suitable for applications demanding high ESD protection and controlled simultaneous switching noise. Consider the SOP package constraints regarding board space and thermal dissipation when integrating into the final assembly layout.

Latches Part Context

This part belongs to the LVQ series of low-voltage logic devices manufactured by onsemi, formerly Fairchild Semiconductor. The 74LVQ373 specifically addresses the need for transparent latches in modern low-voltage digital systems where power efficiency and signal integrity are critical parameters for reliable data handling.

Latches Replacement Considerations

Direct substitutes may include other manufacturers' 74LVQ373 variants or compatible 74LVC373 devices if voltage levels and pinouts align. Verify functional equivalence regarding propagation delays and output drive strength before substitution.

Latches FAQ

How does the Latch Enable (LE) input affect data transparency?

When LE is HIGH, the latches appear transparent, allowing data on the D inputs to pass directly to the outputs. When LE transitions from HIGH to LOW, the data present at the inputs is latched and stored.

What is the function of the Output Enable (OE) input?

The OE input controls the three-state nature of the outputs. When OE is LOW, the outputs are active. When OE is HIGH, the outputs enter a high impedance state, disconnecting them from the bus.