SN74LS161ADRG4

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The SN74LS161ADRG4 is a presettable asynchronous 4-bit binary counter, suitable for counting applications that require data transfer between 4-bit coordinated stages. It is typically used in embedded system applications such as traffic control, industrial automation, medical instruments and consumer electronics. This counter is useful to maintain constant time intervals in oscillators and clocks, and is used in frequency-division applications. The SN74LS161ADRG4 provides an asynchronous clear input for easy reset capability and a clock-enable input that, when held high, allows the devices to be cascade connected.

The SN74LS161ADRG4 is a synchronous 4-bit counter with a ripple up or down capability, suitable for synchronous counting applications. This device contains two independent, 4-bit counters which count up if the select inputs (S1 and S0) are connected to Vcc, or down if the select inputs are connected to GND. The device will reset to 0000 when the asynchronous clear input is pulsed low, and the clock inputs are held low while the reset is active. The asynchronous clear is also useful when multiple counters are cascaded together, as it allows one asynchronous master reset of all cascaded counters.

The SN74LS161ADRG4 is a logic-level device, and can be interfaced with other logic-level devices such as logic gates, latches and flip-flops. A low-to-high transition on the clock input increments or decrements the 4-bit presettable counter depending on the state of the select inputs. The SN74LS161ADRG4 is CMOS compatible, making it suitable for interfacing with TTL devices as well. The SN74LS161ADRG4 is capable of providing a maximum frequency of 20MHz, depending on load.

The SN74LS161ADRG4 offers an interesting combination of features ideal for timing, counting and frequency-dividing applications. It is capable of producing a wide range of output values, making it suitable for a variety of applications. It is compact, reliable and requires minimal power, making it ideal for low-power applications. Overall, the SN74LS161ADRG4 is a useful device for timing, counting and frequency-division purposes.

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