74LVC163DB,112

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The 74LVC163DB,112 is a logic device within the family of Counters, Dividers. It is a low-voltage 4-bit synchronous binary up counter, designed with asynchronous parallel Load and Reset functionality. Unique to the 74LVC163DB,112 is the high speed clock frequencies of up to 400 MHz, making it attractive for high-speed applications like LANs, ATM, digital audio, and video systems. 

The 74LVC163DB,112 is used in systems where there is a need to count events or cycles from an input source. The counter registers data on every positive edge of an input clock signal, always keeping the count of successive clock pulses. The device features a fully synchronous logic implementation, allowing for higher speeds with less power consumption. Dividing the input clock frequency down is possible by the load enable and parallel load inputs. Using these two input terminals, the counter value can be changed at any time. An asynchronous reset input is used to reset the counter back to a pre-determined value.

The counter is built around four positive edge-triggered flip-flops with clock enable and parallel load inputs. Each flip-flop toggles on the positive edge of the Clock Enable input, with their outputs feeding into the next stage. This allows the counter to count in a synchronous fashion, with the output of the last stage feeding into the next clock enable input. The Parallel Load input is designed to preload the flip-flops with a binary data set, loaded in at the same time, with the Load Enable input active.

The Asynchronous Reset input is used to reset all flip-flops to a predetermined state. The parallel Load and Reset signals are both active low, meaning that the logic 0 state needs to be applied to the inputs to register the operation. This device has an output disable, allowing for a single chip solution for multiplexing applications, where specified output data will only be presented when the output disable is low.

The 74LVC163DB,112 is offered in an industry standard SOIC package, allowing for a simplified design process. This device is also 3.3V logic compatible, applying to all input and output operations, with a power supply voltage range of 1.8V-3.6V. This wide voltage range makes this device ideal for applications in low voltage designs, in industrial and automotive applications.

The 74LVC163DB,112 offers high speed performance in a very small package, making it one of the most attractive solutions for high speed counting applications in the market today. It is a cost-effective solution, combining low power and low voltage operations, with high frequency counting. Its parallel load, asynchronous reset and output disable features allow for more flexibility in the implementation, making it possible to achieve a more robust design as requirements increase.

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