74ABT373AD,118 Integrated Circuits (ICs)

Series:	74ABT
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Logic Type:	D-Type Transparent Latch
Circuit:	8:8
Output Type:	Tri-State
Voltage - Supply:	4.5 V ~ 5.5 V
Independent Circuits:	1
Delay Time - Propagation:	3.6ns
Current - Output High, Low:	32mA, 64mA
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SO
Base Part Number:	74ABT373

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74ABT373AD Logic - Latches: Application Field and Working Principle.

The 74ABT373AD is a type of Logic-Latch used to store one bit of data. It is a versatile integrated circuit (IC) consisting of four independent latches on a single chip. This feature-rich IC is used in a wide range of applications, from consumer electronics to industrial purposes, making it an ideal choice for embedded systems. It is also a good choice when used to construct multi-function logic systems.

Application Field

This 74ABT373AD logic-latch is utilized in single-chip solutions, especially in applications that require a latch to store binary data. The latch can store one bit of information, making it ideal for applications where only a single bit of data needs to be stored. One such application is computer memory bank switching, where the latch is used to store which bank of RAM is currently being accessed. Other applications of this latch include circuit switch control, defining data for state machines, communication interface signalling, and counting or timing tasks.The latch is most commonly used in consumer electronics, such as televisions, radios, and other audio/video equipment, controlling how the device operates by storing various data points. 74ABT373AD also finds automotive applications, where it is used for stabilizing external power supplies, or for controlling component actions, such as temperature sensors, airbag systems, and operating door locks. Industrial applications include, but are not limited to, control of motor speed, computer input/output controls and communications devices, as well as instrumentation, industrial sensing and metering devices, and surveillance systems. The latch is ideal for such applications because it is reliable and low-cost, while also offering a range of features including high-speed operation, low-power consumption, and immunity to EMI radiation.

Working Principle

The working principle of the 74ABT373AD latch is based on switching digital signals between two devices. The latch contains four independent latches, each consisting of two inputs (A and B) and two outputs (QA and QB). Both inputs A and B are connected to a logic signal; when A is set to high and B at low, the latch is said to be “set”, and when A is set to low and B to high, the latch is said to be “reset”. Once the latch is set or reset, the output signals QA and QB will continue to reflect the state until a new signal is sent to the input. The latch also contains logic gates that are connected to the outputs of each latch, allowing for the signals to be combined or manipulated before being output. This makes the 74ABT373AD versatile and allows for complex logic functions to be created with minimal components. The latch also has an enable pin that can be used to disable the latch, allowing for power savings or the reset of the outputs when necessary. The 74ABT373AD can operate in a wide range of temperatures, from -55 °C to +125 °C and has a power dissipation of 1.4W at 25 °C. It is low-power and very stable, making it an ideal choice for applications that require high reliability and accuracy.

Conclusion

The 74ABT373AD is a type of Logic-Latch that is ideal for single-chip solutions and embedded systems, offering low-cost, low-power and high-speed operation. The latch can store one bit of data, making it an ideal choice for applications requiring reliable data storage, such as memory bank switching, circuit switch control and communication interface signalling. It is also used in consumer electronics, automotive and industrial control applications, and can help reduce power consumption and improve reliability.

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