74LVC245AMTR

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74LVC245AMTR application field and working principle

The 74LVC245AMTR is a high-performance octal transceiver that is part of a family of advanced low-power Schottky TTL (ALS) integrated circuits. It is designed to quickly transmit data between the device and the bus, and its 8-bit architecture can carry 8-bit parallel data. It is an essential device for implementing modern computer architectures, data communication systems and peripherals.

Application Field

The 74LVC245AMTR is suitable for a wide range of system applications, including personal computers and systems peripherals, networking equipment, logic systems, embedded microprocessor and ASIC applications. The device also provides additional benefits in digital audio systems, including speed and flexibility.

The device is capable of driving a wide range of loads, from any two-state memory or logic circuit to computer buses. This make the 74LVC245AMTR a viable option for interface operations in communication systems, such as ESD protectors or video interface components. Moreover, in addition to the usual high drive capabilities of three-state devices, the 74LVC245AMTR offers premium features such as ultra low power usage, robust performance in noisy conditions due to its Schottky logic, a wide range of supply voltages, and a high level or noise immunity.

Working Principle

The 74LVC245AMTR device operates on a bi-directional communication scheme where data can be sent and received at the same time. When transmitting data, the device acts as a driver of the device\'s data pins, with the output pair opposite of the input pair being latched first and transmitted next. The device\'s outputs remain in their current states until the corresponding input is latched and the state changed.

The device\'s transceiver is composed of eight parallel sets of transceiver (8-bits) with each set connected to the corresponding input buffer and output buffer. The output buffer consists of two sections--an open-drain section for transmitting data and an output latch for buffering data. The output latch can be activated by asserting the device\'s output enable function, which causes the input buffer section to latches the data from the bus. The device\'s output enable pin can be actively or passively driven, or used simply as an enable switch between output and three-state. The device\'s input buffer section acts as a receiver and will detect any state change on the data bus, latch the data received and insert the data into its onboard register. This register is then connected to the device\'s output to enable data transmission.

Conclusion

The 74LVC245AMTR is a versatile transceiver device designed for high-speed data transmission and reception of 8-bit parallel data in computer architectures and peripherals. The device can operate in either active driver or passive buffer mode, and its Schottky logic provides robust performance in noisy conditions. The device has a wide range of load driving capabilities, as well as a wide range of supply voltages and noise immunity.

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