SN74LVC373APW

Series:	74LVC
Packaging:	Tube
Part Status:	Active
Logic Type:	D-Type Transparent Latch
Circuit:	8:8
Output Type:	Tri-State
Voltage - Supply:	1.65 V ~ 3.6 V
Independent Circuits:	1
Delay Time - Propagation:	1.5ns
Current - Output High, Low:	24mA, 24mA
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-TSSOP
Base Part Number:	74LVC373

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Introduction

The SN74LVC373APW is an Octal D-Type Flip-Flop device which comprises eight non-inverting D-type flip-flops with separate D, Set and Reset inputs, suitable for data storage and bus applications. It functions as a gated latch to store data, or as a byte-wide, transparent buffer where the data is presented at the outputs whenever the Enable input is LOW. This device is part of the Texas Instruments LVC (Low Voltage CMOS) Logic products family.

Application Field

The SN74LVC373APW can be used in a wide variety of applications, such as counters, shuffling of data bits, shifting of data bits, serial-to-parallel or parallel-to-serial conversion of data, and realization of synchronous/asynchronous pipelines. It is also often used as a gated latch. The information stored in the latch can be used for logic recall and control applications with the help of a clock signal. This method is advantageous as it does not require any extra control logic, hence the process is simpler and faster.In addition, the SN74LVC373APW is often used in bus systems such as the I2C bus, CAN bus, Serial Peripheral Interface (SPI) bus, etc. to facilitate the communication between different devices. The octal D-type flip-flop device can be used to store the data sent by one device before it is forwarded to the other device, allowing for bidirectional communication.

Working Principle

The SN74LVC373APW is an octal D-type flip-flop device composed of eight non-inverting D-type flip-flops. It has separate D, Set and Reset (Inputs) as well as a Clock and Enable (Inputs) and Outputs (Q). Each flip-flop has its own inputs and outputs, while the Clock and Enable inputs are shared among the eight flip-flops. The Clock and Enable inputs together form a control logic for the latch which controls the flow of data.When the device is in the inactive state, the Clock is at a LOW logical level and the Enable is at a HIGH logical level. In this state, the D inputs are ignored and the stored data at the Qoutputs remain unaffected.When the Control Logic is active, the Clock is at a HIGH logical level and the Enable is at a LOW logical level. In this state, the data at the D inputs are stored in the latching elements, while the data at the Q outputs are updated accordingly. As mentioned earlier, the SN74LVC373APW can be used as a gated latch with the help of a clock signal. The data stored in the latch will be retained at the Q outputs as long as the clock signal is HIGH. When the clock signal goes LOW, the stored data will be updated with the data from the D inputs. Additionally, the Reset input is used to reset all the data in the device to logical LOW level independently of the Clock and Enable inputs.

Conclusion

The SN74LVC373APW is an octal D-type flip-flop device which is part of the Texas Instruments Low Voltage CMOS Logic product family. It is mainly used in counters, data shuffling, data shifting, and serial-to-parallel conversion. The device is also used as a gated latch which is mainly beneficial in data recall and control applications. It allows for fast and simpler processes which do not need any extra control logic. The SN74LVC373APW is also commonly used as a buffer device in bus systems like I2C bus, CAN bus, and SPI bus to allow for bidirectional communication between different devices. With the help of the separate D, Set, and Reset inputs as well as the Clock and Enable inputs, this device is perfectly suited for all kinds of application fields.

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