Product Overview: 74HC40103N652 by NXP Semiconductors

The 74HC40103N652 by NXP Semiconductors is a high-speed CMOS device that is a part of the 74HC/HCT family. This integrated circuit is an 8-bit synchronous down counter that comes in a 16-pin plastic DIP package. The counter has a storage latch associated with eight stages. It is designed to operate with a 2 V to 6 V power supply, making it suitable for a wide range of applications in the industrial, commercial, and communication sectors.

This precision counter features a fully synchronous internal design, ensuring that the output transition occurs on the next clock pulse after the input conditions have been met. The device includes a master reset input that overrides all other inputs and can be used to initialize the counter to its maximum count. When the master reset is activated, the outputs are immediately forced to a high impedance state, regardless of the status of the clock input or any other control input.

The 74HC40103N652 counter is incremented on the negative-going edge of the clock pulse via a two-stage synchronized input, which minimizes the risk of error when the external clock is applied. The counter can be programmed to count down from any preset value, and when it reaches zero, it generates a ripple carry output pulse which can be used to enable successive cascaded stages. This feature allows for the creation of multi-stage counters with longer count sequences.

The device's outputs are capable of driving 15 LSTTL loads, which means that it can easily interface with other logic families. The 74HC40103N652 also boasts a low power consumption, with a typical ICCH of only 4 µA in standby mode, and an active ICC of 1 µA per MHz, allowing for efficient operation in power-sensitive applications.

In summary, the 74HC40103N652 from NXP Semiconductors is a versatile and reliable 8-bit counter that offers synchronous operation, a wide operating voltage range, and low power consumption. Its ability to interface with various logic families and the facility to be cascaded makes it an excellent choice for complex timing and counting applications.