83020012A

Series:	--
Packaging:	Tube
Part Status:	Obsolete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:	2ns
Current - Output High, Low:	2.6mA, 24mA
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	20-CLCC
Supplier Device Package:	20-LCCC (8.89x8.89)
Base Part Number:	54ALS373

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IntroductionThe 83020012A logic latch is a digital component used to temporarily store data in digital systems. In contrast to memory devices like registers and RAM, a latch is an asynchronous component, designed to hold data until it is either set or reset by a clock signal. This component is well-suited for applications in which data must be held while some other process is being executed, such as an analog-to-digital conversion, or logic simulations.Types of LatchesThere are two main types of latches: edge-triggered and level-triggered. Edge-triggered latches, the most common type found in integrated circuits, have the advantage of higher speed and lower power consumption than their level-trigger counterparts. 83020012A latches are edge-triggered, meaning that they are activated by an abrupt change in signal levels, instead of a steady change in levels.FunctionalityLatches perform two basic functions: to store data, and to pass data. To store data, a latch will take in a signal and either accept or reject that signal according to the current state of the latch. If the signal is accepted, the latch will store that data until the signal is either reset or set. To pass data, a latch will pass on the data it has accepted to the next component in the circuit.Working PrincipleThe 83020012A device operates according to the following basic principles. When a clock signal is applied, the latch will enter the SET state, which allows the latch to accept a signal. When the signal is accepted, the latch is then in the HOLD state, in which it holds the accepted signal and will not accept any new signals. Finally, when a reset signal is applied, the latch will enter the RESET state, clearing the latch and allowing new signals to be accepted.Application FieldsThe 83020012A latch is useful in a variety of applications, particularly when an asynchronous latch is needed. Examples of applications in which this device is used include data capture, data switching, and logic simulations.Data CaptureIn data capture applications, a latch is used to store data while it is being processed. This is particularly useful in analog-to-digital conversion, since the current sample needs to be held while the digital data is being generated. The 83020012A is well-suited for this application due to its fast response time, low power consumption, and edge-triggered design, which allows for a lower jitter than standard level-triggered latches.Data SwitchingData switching, or bus switching, refers to the transfer of data between devices on the same data bus. This is commonly used in integrated circuit design, where multiple devices need to communicate with each other. The 83020012A latch can be used in this application to store data while it is being transferred between devices.Logic SimulationsIn logic simulations, a latch is used to emulate the behavior of logic gates in a digital circuit. Logical operations such as AND, OR, and NOT can be simulated using the latch\'s SET, RESET, and HOLD states. The 83020012A device is well-suited for this application due to its fast response time and lower power consumption than standard level-triggered latches.ConclusionThe 83020012A logic latch is well-suited for a variety of applications, particularly when an asynchronous latch is needed. Its edge-triggered design allows for fast response times and lower power consumption than standard level-triggered latches, making it ideal for data capture, data switching, and logic simulations.

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