SN74HCT373PWR

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Logic devices play a fundamental role in digital electronics and modern computing. When it comes to complex logic functionality, one of the most versatile and robust options out there is the SN74HCT373PWR, a high-speed logic latch device made by Texas Instruments. This specialized integrated circuit (IC) offers a wide range of applications, covering multiple electronics disciplines.

The SN74HCT373PWR is part of the 74 Series TTL family, specified with a working voltage that ranges from 4.5V to 5.5V. The input and output nodes are composed of two open-collector circuits that can work with any other ICs with a common power supply. The input state of an open-collector circuit is determined by the output of a previous stage, allowing for communication between several devices.

The SN74HCT373PWR also has an asynchronous reset input (CLEAR) that allows to quickly and easily reset the latch when needed. This reset must be done rapidly, since it prevents any further action on the reset terminal. Additionally, it contains two active-low enable inputs (E1 and E2) that allow to control the enablement of the circuit. The enablement can be activated at different stages according to need. The coefficient of thermal variation of the input failure rate (FIT) of the SN74HCT373PWR is 0.0015, which allows for its use in a broad range of temperature ranges.

In terms of application, the SN74HCT373PWR is designed primarily to provide storage and transfer of digital information. Its eight latch circuits, organized as four master-slave pairs, make it perfect for synchronizing signals between fast and slow frequency systems. It is also good for clock synchronizing in applications where the clock is generated externally, or where a stay-cycle is required.

Since the SN74HCT373PWR latch has fast switching time and it is pin-for-pin compatible with the standard 74 Series TTL family, it is also convenient to use in communications. It is very useful in many applications such as UARTs, I2C, CAN, RS-485, and Ethernet controllers.

The working principle of the SN74HCT373PWR is based on a master-slave arrangement, in which a master latch is used to control one or more slave latches. The SN74HCT373PWR has a master-slave structure of either two or four latches. Each pair of master-slave latches has a common enable input (E1 or E2) and independent reset inputs (CLEAR).

The master latch of the SN74HCT373PWR is enabled by the E1 input, while the slave latch is enabled by E2. When enabled, the two latches will store the data present at their respective associated inputs. As the input data is changed, the output pins will remain unchanged until the associated enable input is asserted. When the enable input is de-asserted, the data present at the inputs will become the current output. If a reset input is asserted, it will reset the output immediately, regardless of the state of the enable input.

The SN74HCT373PWR is an indispensable addition to any toolbox when it comes to developing advanced and reliable electronics. Due to its reliability, versatility, and simple operation, it is an excellent option for almost any type of application that requires a versatile logic latch.

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