SN74F163AN

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SN74F163AN Application Field and Working Principle

The SN74F163AN is a synchronous 4-bit binary counter which features three-state outputs. This type of counters are used in systems requiring a simple count sequence. This can be especially useful in numerous application fields, such as in signal and logic applications, timing, sequencing and data handling.

The SN74F163AN is a member of the 74F series of 74F logic ICs. This family is part of the 74 series of ICs from Texas Instruments, which includes ICs for logic, analog and mixed signal applications. The 74F series comprises ICs for logic purposes only. This series has been developed for fast, low-power and high-noise immunity performance.

In terms of applications, the SN74F163AN is suitable for field generation and counting, as well as time interval measurement and data handling. This 4-bit counter has four independent binary outputs which are triggered in synchronism with the rising edge of the clock signal. It has an asynchronous reset input ( CLR ) and an input ( UP ) which allows to reset the counter and to select the counting mode.

Working Principle of SN74F163AN

The SN74F163AN has a synchronous mechanism, in which the four binary outputs are triggered in synchronism with the rising edge of the clock signal. The counter will increment its count in response to a high to low transition of its UP input. The CLR input resets the counter to 0 regardless of its current counting state. The counter has an active LOW Asynchronous Reset which allows the counter to be reset with the falling edge of the reset pulse.

The counter can be configured in two modes, normal or ripple. In the normal mode, the count will execute synchronously with the clock cycle. This is particularly useful when larger count numbers are required, since it allows the counter to be switched from one count number to the next without creating any glitches. With the ripple mode, however, the count is incremented on each clock cycle, when the UP pin is in the HIGH state. This mode is useful for faster counting and for shorter intervals between counts.

The SN74F163AN also features a three-state output capability. The 3-state outputs allow the outputs of multiple units to be connected in an array, to drive a common line. This provides the SN74F163AN with the capability to drive a wide variety of common types of memory, such as RAMs and ROMs, RAM/ROMs, PROMs, and so on.

Conclusion

The SN74F163AN is a 4-bit binary counter which features a synchronous and asynchronous reset input, three-state outputs and a wide variety of applications. This counter is widely used in signal and logic applications, timing, sequencing and data handling. The main advantage of this device is its fast, low-power and high-noise immunity performance.

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