SN74S112ANSR

Max Propagation Delay @ V, Max CL:	7ns @ 5V, 15pF
Base Part Number:	74S112
Package / Case:	16-SOIC (0.209", 5.30mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Current - Quiescent (Iq):	25mA
Voltage - Supply:	4.75 V ~ 5.25 V
Current - Output High, Low:	1mA, 20mA
Trigger Type:	Negative Edge
Series:	74S
Clock Frequency:	125MHz
Number of Bits per Element:	1
Number of Elements:	2
Output Type:	Differential
Type:	JK Type
Function:	Set(Preset) and Reset
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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1. What is SN74S112ANSR?

SN74S112ANSR is a type of synchronous dual JK flip-flop integrated circuit (IC). It is manufactured by Texas Instruments Corporation and is based on their SN74S112JK flip-flop device. The SN74S112ANSR is a dual JK flip-flop that utilizes an active low reset input and an active high clock signal. This device is designed to allow two signals to be changed while maintaining their logic state until the reset input is asserted.

2. SN74S112ANSR Application Field

The SN74S112ANSR is commonly used in memory circuits, sequential logic, and binary counter circuits. For example, the SN74S112ANSR can be used in memory circuits to store a state until the reset input is asserted. Additionally, multiple SN74S112ANSR can be used in combination to construct a binary counter, which can be used for frequency division and division by two.

3. SN74S112ANSR Working Principle

The working principle of the SN74S112ANSR is based on the JK flip-flop and how it responds to a clock signal. The JK flip-flop logic is based on two NAND gates that are fed in to a clock input. The output of the two NAND gates are then connected to two different inputs of a NOR gate, whose output then serves as the output of the flip-flop. The SN74S112ANSR is a dual JK flip-flop, meaning it has two separate flip-flop circuits that can be used to store two different signals. The input to each of the flip-flops is the clock signal and one of the input signals. The other input to the flip-flop is the reset signal. When the reset signal is active, each of the two flip-flop circuits are reset and the two signals are not updated. When the reset is inactive, and the clock signal is asserted, the two inputs to the flip-flop circuits are each taken as the inputs of the two NAND gates. If the inputs to the NAND gates are both high, the output will be low, and the output of the NOR gate will be high. If the inputs to the NAND gates are both low, the output will be high, and the output of the OR gate will be low. This low state from the OR gate is then fed back to the input of the other flip-flop, stabilizing the logic state until the reset is asserted or the clock signal changes. The dual JK Flip-flop integrated circuit SN74S112ANSR is a valuable tool for implementing simple design for memory, binary counters, and other sequential logic circuits. Its dual JK flip-flop configuration allows it to store data until the reset is asserted and allows two different signals to be changed while maintaining their logic state. Furthermore, the active low reset and active high clock signal are easy to use, allowing for easy integration of the SN74S112ANSR into many other digital circuits.

4. Conclusion

The SN74S112ANSR is a dual JK flip-flop integrated circuit that is employed in many digital circuits. Its active high clock and active low reset inputs make it easy to integrate into other circuits as a memory or a binary counter. The JK flip-flop logic allows it to store two separate signals until the reset is asserted. This integrated circuit is inexpensive and is highly reliable for use in many design applications.

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