SN74HC393DR Integrated Circuits (ICs)

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The SN74HC393DR is a dual 4-bit binary ripple counter with complementary outputs. It is a robust and versatile logic circuit which can be used in a variety of different ways across a broad range of projects. It is part of the family of logic circuit integrated circuits called ‘Counters, Dividers’ and is a very important addition to any project requiring logic circuits. This article explains the application field and working principle of the SN74HC393DR.

The SN74HC393DR are two internally synchronous 4-bit binary counters which feature dual counting and dual complementing outputs. The content of each counter is advanced, when triggered by a HIGH to LOW transition at the corresponding clock input. The second counter is controlled by the first counter, so that all timing sequences are synchronized. The counters can count from zero to fifteen (16 states) and are applicable directly to frequency, period and time measurements. The dual counter is composed of two synchronous 4-bit up/down binary counters.

The SN74HC393DR is widely used in various applications such as LED display, digital timing, telecommunications equipment, medical and medical diagnostic systems, instrumentation equipment, digital power measuring systems and computers. It can be used to count signals and also be used to divide signals in two stages as well as internal interrupts generators. It offers great flexibility in any application field where logic counter are needed and it\'s suitable for high-speed counting due to its high-speed logic technology.

The SN74HC393DR is a dual 4-bit binary ripple counter, which means the output of each stage is the input of succeeding stage, each modulo counting stage is triggered on a rising or falling edge of TTL compatible clock input. The SN74HC393DR has two separate clocks in the IC and pin to pin connection of the IC. The SN74HC393DR IC has a wide operating temperature range from -55°C to +125°C.

The SN74HC393DR construction is based on a synchronous integrated circuit, containing logic gates and flip-flops. This high speed logic technology offers incredible performance, allowing for the counting of frequency up to 250MHz and up/down counting. Its main application is the direct interfacing with TTL logic because of its high speed, excellent noise immunity and high impedance line-input driver stage. The SN74HC393DR has rising edge triggered Flip-flops, which provide an easier interfacing and better timing results compared with falling edge triggered Flip-flops.

The SN74HC393DR also includes an active low reset terminal which resets the counters to zero. The SN74HC393DR also offers a wide Input Voltage range, enabling the input signals to be low or high so the device can be adapted to different power supply system voltage levels. Furthermore, SN74HC393DR logic circuit is able to withstand voltage surge up to ±15 volts or ±30 volts.

In conclusion, the SN74HC393DR is an extremely versatile logic circuit integrated circuit suitable for a variety of applications. Its wide range of applications and capabilities, such as being able to count signals and also divide signals in two stages as well as its internal interrupts generators and wide operating temperature range make the SN74HC393DR an ideal solution for circuits requiring multiple decision making actions. The SN74HC393DR is suitable for applications where high-speed counting and precise timing results are necessary.

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