SN74LVTH373PWRE4

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Logic latches perform the same basic function as relays—they store, or latch, data. An important characteristic of all latches is their ability to maintain a state even when they are not being supplied with power. In electronic terms, this is known as static state retention. One of the most widely used logic latches is the SN74LVTH373PWRE4, and in this article, we are going to explore its application fields and working principles.

Applications of the SN74LVTH373PWRE4

The SN74LVTH373PWRE4 is a high-speed, low-voltage CMOS logic latch. It is designed to operate over a wide supply voltage range from 2.7V to 3.6V and has completely static operation, requiring no clock pulse for operation. With its wide voltage range, high speed and static operation, the SN74LVTH373PWRE4 is ideally suited for a wide range of applications, including:

• Processor/microprocessor interfaces
• Bus interface applications
• Peripheral interface circuits
• Consumer electronic applications
• Automotive systems
• Industrial control systems

Working Principle

The SN74LVTH373PWRE4 is composed of two bistable data bits, each with an inverting and non-inverting latch enable (LE) and a buffered output (Q). Each data bit has an independent LE input that is activated when it is low. When LE is active the data bit is latched and a pulse train is established. When LE is deactivated the data bit is not latched and the pulse train is disabled.

When the SN74LVTH373PWRE4 is enabled (LE goes low) the data at the two data bit inputs is latched and an inverted copy appears at the two buffered outputs, Q and Qbar. The latched signals remain at their latched levels even when LE is returned to its inactive state.

When the SN74LVTH373PWRE4 is disabled (LE is high), any data at the inputs is ignored and the Q and the Qbar outputs remain in their previous state. The SN74LVTH373PWRE4 will stay in this static state until LE is brought low again. This static latch feature of the SN74LVTH373PWRE4 makes it particularly useful for memory storage applications.

Conclusion

The SN74LVTH373PWRE4 is a high-speed, low-voltage CMOS logic latch that is designed for a wide range of applications. Its static latch feature makes it ideal for memory storage applications. This latch also has a wide voltage range, high speeds and static operation, making it suitable for use in a multitude of applications.

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