SN74LVC821ADW

Max Propagation Delay @ V, Max CL:	7.3ns @ 3.3V, 50pF
Base Part Number:	74LVC821
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Input Capacitance:	5pF
Current - Quiescent (Iq):	10µA
Voltage - Supply:	1.65 V ~ 3.6 V
Current - Output High, Low:	24mA, 24mA
Trigger Type:	Positive Edge
Series:	74LVC
Clock Frequency:	150MHz
Number of Bits per Element:	10
Number of Elements:	1
Output Type:	Tri-State, Non-Inverted
Type:	D-Type
Function:	Standard
Part Status:	Active
Packaging:	Tube

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SN74LVC821ADW Application Field and Working PrincipleSN74LVC821ADW is a type of logic flip-flop which belongs to the SN74LVC family of integrated circuits. This chip is typically used as a latching device, storing information from one device to another. In its basic design the SN74LVC821ADW can latch one bit of data at a time, allowing for controlled storage of digital signals. The chip is comprised of two separate parts: the D-type flip-flop and the S-R input/output logic circuit.The D-type flip-flop section of the SN74LVC821ADW is composed of two NAND gates. These gates are configured to constantly monitor the state of the input signals, and update the state of the output signals in accordance to the changes of the input signals.The S-R input/output logic circuit is designed to provide an interface between the user and the chip, allowing the user to provide input control signals and reading out output status signals. This circuit is composed of two further NAND gate pairs; the first pair is used to capture the input control signals, while the second pair is used to drive the output status signals.The D-type flip-flop and the S-R input/output logic circuit both form an integral part of the SN74LVC821ADW and both must be configured correctly in order to properly use the chip in a user project. Write pulses (WR) must be provided to the D-type flip-flop in order to store a positive value into the output latch, while apply pulses (AP) must be applied to the S-R input/output logic circuit in order to read the state of the output latch.The SN74LVC821ADW can be used in a variety of applications, some of which include digital logic circuits, oscillators, data sources, and pulse-width modulation. Oftentimes, it is used to provide temporary storage of data while it is being transferred from one device to another. In these applications, the chip serves as a reliable buffer that ensures data integrity while controlling the rate at which it is being transferred. Additionally, the chip can be used to read and control digital signals, one bit at a time.In summation, the SN74LVC821ADW is an integrated circuit logic flip-flop that can reliably store one bit of data at a time. This chip can be used in a variety of applications in order to store and control data, from basic digital logic circuits to pulse-width modulation. As can be seen, the SN74LVC821ADW is extremely useful for a variety of tasks, making it one of the most important integrated circuits in the industry.

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