SN74BCT373DWR Integrated Circuits (ICs)

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Logic - Latches

Latches are basic building blocks in digital integrated circuits (ICs). They are used to store data and provide a point in an electrical circuit where a steady voltage is maintained. The SN74BCT373DWR is a type of latch, specifically, a D-type transparent latch. This particular version is offered in a very common, small form factor making it extremely useful in a wide variety of applications.

The SN74BCT373DWR is a 9-Pin, dual in-line package chip with two output pins, four input pins, two VCC pins and one GND. It is part of the 74XX series and operates on TTL voltage levels (5 volts and 0 volts). Each latch has three state controls, an enable and two data inputs, D and NOT D. The setup of the pins is quite simple and intuitive as most of the 74XX chips are.

The latch can be configured as either a D transparent (latch) or a D non-transparent (buffer) depending on the current state of the 3 State OE pin. When the OE pin is LOW the output of the latch is transparent, meaning the data at the inputs and outputs are nearly the same. In this mode, the outputs will follow the inputs whenever they are changed, as long as they remain valid. When the OE pin is HIGH, or when the latch is in the 3-state mode, it acts as a buffer. This means the outputs will not change as the inputs are changed, instead they will remain in their current state.

The SN74BCT373DWR has several important applications in modern electronics. It is used in a wide range of digital applications ranging from industrial, automotive, and consumer goods to military and aerospace. It is used in almost every type of microcontroller circuit, both as a simple latch and as part of more complex functions such as counters, shift registers, and digital addressable switches. Its robust TTL voltage control and versatile 3-state configurations make it particularly suited for memory address decoding, as well as powering data and address buses.

The SN74BCT373DWR is a low power, versatile and rugged device. It is widely available and very cost effective making it the perfect choice for today’s technology. It is designed to be tolerant of minor voltage fluctuations, allowing it to be used in slightly less than ideal conditions.

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