SN74ACT244PWRG4

Logic, a category of specialized integrated circuits, is a major component of microcomputers and digital appliances. Logic devices are broadly divided into five categories: buffers, drivers, receivers, transceivers, and SN74ACT244PWRG4. This article will describe the application field and working principle of the SN74ACT244PWRG4.

Introduction to SN74ACT244PWRG4

SN74ACT244PWRG4 is a 3-state noninverting octal buffer/line driver with 5V tolerant inputs. It is designed to provide bus-oriented, application oriented buffer/line drivers such as those used in system interfaces and memory systems. It is a member of the 74AC logic family, which is capable of operation over a temperature range of -40°C to 85°C. Its logic levels are compatible with the TTL logic levels over the entire temperature range.

Applications

SN74ACT244PWRG4 is suitable for many applications demanding high-speed, low-power and noise-tolerant buffers or line drivers for use in multichip and hybrid applications. It is particularly suited for memory systems, data and address buses, clock-signal buffering, and bus interfaces in computers, systems and peripheral equipment. It can also be used in telecommunications, audio/video equipment, instrumentation, and any other applications where small signal levels must be handled with reasonable speed and low current consumption.

Features/Benefits

• True TTL-compatible logic levels - guaranteed over entire temperature range.
• ESD protection exceeds 2000V per MIL-STD-883, Method 3015.7.
• Outputs are open-drain and are connected to other open-drain outputs to form an active-low bus.
• In-line power/ground pins reduce high-speed noise to which devices are exposed.

Working principle

SN74ACT244PWRG4 is an octal buffer/line driver. It consists of eight non-inverting buffering/driving 3-state circuits connected to two active-low enable inputs that allow parallel data transfers in two directions. The two enable inputs are enabled to logic 1 (high) level if the control enabled line of the same direction is enabled. Inputs can be driven from either 3.3-V or 5-V devices. I/O pins provide both buffering and 3-state driving functions. Outputs are actively pulled low when in a deselected state.

When enable A is low and enable B is high, data from inputs D1 to D7 is buffered to outputs Q1 to Q7. When enable A is high and enable B is low, data is transferred from inputs D1 to D7 to outputs Q1 to Q7. The output-enable input is used to independently disable outputs Q1 through Q7.

The SN74ACT244PWRG4 is available in a wide range of packages, including SOIC, PDIP, TSSOP and QFN. It is specified to operate over the entire temperature range of -40°C to 85°C.

Conclusion

The SN74ACT244PWRG4 is a versatile device that can be used to provide bus-oriented, application oriented buffering and line driving in many applications demanding high-speed, low-power, and noise-tolerant buffers. It has low power consumption, high-speed operation, and true TTL-compatible logic levels. In addition, its robust construction and wide temperature range allows for many applications in both commercial and industrial settings.