SN74HC193DE4

The SN74HC193DE4 is a 4-bit synchronous binary up counter. It is part of the 74HC family of ICs, which are high-speed CMOS logic integrated circuits suitable for implementing versatile counter, divider and register applications in digital systems.

A common application of the SN74HC193DE4 is frequency division or dividing a clock signal. This counter can be used as a clock divider, to divide the signal by multiples of 2, 4, 8 and 16. It can also be used to generate long time delays which can be used for timing applications. The SN74HC193DE4 can also be used to create frequency dividers where a signal is divided into a frequency and then used for timing.

TheSN74HC193DE4 works by counting up in binary and when it reaches the highest count, it starts again from 0. The four output pins QA to QD give the binary count, with QA giving the least significant bit (LSB) and QD giving the most significant bit (MSB). A four bit counter can therefore count from 0 to 15 in a binary code, with the clock input triggering each count. The clock input is synchronized to the rising edges of the clock. The Enable (EN) pin, when high, enables the counter, while a low logic level on EN stops the clock input and stops the count.

The SN74HC193DE4 also has a asynchronous reset (R) pin, which when low, resets the counter to 0 and output 0 on all four outputs. The SN74HC193DE4 can also be used as a 4-bit register, with the clock input used to control when data is loaded into the four registers.

The SN74HC193DE4 uses an internal flip-flop to store data, buffering and latched with every clock input. The SN74HC193DE4 is available in a small 16-pin DIP package and comes with a very low input current and a high operating temperature range. It is also available in a variety of technology nodes – with die sizes ranging from 0.5um to 0.18um – making it suitable for a wide range of applications.

The SN74HC193DE4 is an ideal choice for frequency division and register applications, making it a versatile and cost-efficient solution for designers building a wide variety of systems. It is still widely-used in many applications today, making it and its associated high-speed CMOS family, the 74HC family, a widely used and widely respected logic IC.