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Logic - Latches
The maintained logic state can change at each time a latch enable (or similarly named) signal is in a valid logic state, making latches (also known as flip-flops) an elementary form of digital memory that is analogous to flip-flops. The "transparent" latches permit outputs to reflect the input state, while enabling the signal to be active rather than altering the state after the held state has been fixed without using clocks.
Why Should We Use Logic - Latches?
For the creation of an asynchronous sequential circuit, latches are helpful. Latches are two stable states in a sequential circuit. These are not dependent on the clock pulse and are responsive to the input voltage applied. Any 8-bit binary number can be used to turn on the LED through the latch, which stores the microprocessor's output number instead of storing it on the data bus. Latches are required to save the data since when the CPU executes an OUT instruction, the data is only on the data bus for a fraction of a second. The LED wouldn't light up for the viewer if the lock weren't there.
Different Types of Logic - Latches:
Logic-Latches ICs are mainly of four types which include, SR Latch (Set-Reset), Data Latch (D Latch), Toggle Latch (T Latch), and J-K Latch (which is named after its inventor Jack Kilby) because it has two inputs J and K. The Logic Latches ICs have 2 inputs and a single output. The two inputs are meant to be the SET input and the RESET input. The key difference between these devices is the amount and types of input they possess and how they operate and alter the state.
Application Areas of Logic - Latches:
The following are some of the key applications of Logic-Latches:
- Utilizes a Few Inputs to Check Error Signals
- Creates an Alarm / Tamper Circuit with an S-R Latch
- Identify Stage Variations in input Signals.
- Merging Power Fair Signals
- Permit or Halt a Digitized Signal.
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74FCT16373CTPVG8, IDT, Integrated Device Technology Inc