74ACT174SC

The 74ACT174SC is a 4-bit Register or counter offering fast performance coupled with high output drive in a 16-lead small outline package, making it a cost-effective choice for integration into small electronic devices. It is a synchronous device, meaning that all state changes occur simultaneously when the clock input becomes established, offering access to the internal master-slave flip-flops for easy synchronous operation.

The 74ACT174SC belongs to the LOGIC-Flip Flops category, which are digital electronic circuits used for storing single bit of binary information. They are bi-stable devices that maintain their state even in the absence of the clock. The two stable states, 0 and 1 (or set and reset) are established by the application of reset and set pulses in the Clock input.

The 74ACT174SC simply refers to the logic family it belongs to (74 stands for TTL and ACT is the generation of TTL family—eighth. 174 is the specific component that belongs to this family). SC stands for “small outline package”.

The 74ACT174SC offer many advantages like low power consumption in terms of time and money. The power consumption required by the 74ACT174SC is approximately 10µA at 5V, when compared to support logic of 74L or 74H type the power consumption is about 20 times lower. It also has a propagation delay of about 8-10ns at 5V, which is about 10 times faster than that of 74F/LS type component.

The 74ACT174SC register mainly consists of two four-bit master-slave registers. It has a single clock input in line with other ICs from this family, two active-low reset inputs, one active-low enable input, two active-high preset inputs, and two active-high clear inputs. In addition, it has two more active-low inputs to control the state of the four read-only outputs.

The working principle of the 74ACT174SC is simple. As we mentioned before, it is a synchronous device, meaning that all state changes occur simultaneously when the clock input becomes established. The device has two registers, each with four bits of information. The lower four bits are stored in the master register, while the higher four bits are stored in the slave register. The device works by first sending a pulse on the clock input to reset the master registers. Once reset, the output of the slave register is written to the master register. Then the data which needs to be stored is written into the slave register. Finally, the master register is clocked again, capturing the data from the slave register into it. At this point, the data has been written into the 74ACT174SC register.

The 74ACT174SC register can be used for many applications including digital logic circuits for counter and shift register applications, and for applications that require highly reliable data transfer. It is also used for memory applications, where data needs to be preserved in the absence of power, as the 74ACT174SC can operate from a single 5V supply and operate at a temperature range of 0 to 70°C.

In conclusion, the 74ACT174 schematic is a 4-bit Register or Counter offering fast performance coupled with high output drive in a 16-lead small outline package. This makes it a cost-effective choice for integration into small electronic devices. It belongs to the LOGIC-Flip Flops category and is generally used for memory applications, counter and shift register applications, and for applications that require highly reliable data transfer. The working principle of the 74ACT174SC is simple and can be used in a wide range of applications.