74ACT11652DWR

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The 74ACT11652DWR is a high performance 18-bit transceiver that converts data from TTL voltages to NRZ (nonreturn-to-zero) levels on one side while TTL-level data is received on the other. This part is designed to meet the requirements of high performance and advanced data processing systems and is guaranteed to find its way into a variety of applications. This article examines the application field and working principle of the 74ACT11652DWR.

Application Field

The 74ACT11652DWR is designed to handle the transmission of data between devices operating at different voltage levels. It is capable of transmitting up to 18-bits of data at rates up to 10 Mbps with a propagation delay time of less than 10 ns. The device also allows for the use of programmable input threshold and endurance currents to ensure reliable operation and to reduce the possibility of data errors.

The transceiver has proven to be reliable in data and telecommunication systems, such as routers, hubs, switches, and cell phones, as well as in other communication related products. It is also suitable for use in embedded systems, particularly those found in industrial automation or instrumentation applications. Additionally, it can be used in personal computers, including netbooks and notebook computers.

Working Principle

The 74ACT11652DWR operates as an 18-bit transceiver that converts data from TTL voltages to NRZ (nonreturn-to-zero) levels. This device takes TTL-level data on one side, and transmits NRZ-level data on the other. The part is programmable, allowing for selectable input thresholds and endurance currents to ensure reliable operation.

The part contains two separate input ports, one for TTL-level data and the other for NRZ-level data. The input ports are divided into two 18-bit wide banks for a total of 36-bits of data supported. On the output side the device provides two 18-bit wide banks of NRZ-level data.

The device operates using asynchronous FIFO architecture. The FIFO stores up to 64 words of 36-bits each, which take advantage of the dual channel 18-bit input ports. Data is read from the FIFO and is delivered to the output ports through a pair of shift registers. The control logic allows the device to automatically detect if an input port is ready to transmit data and it routes it through the FIFO so it can be shifted out.

The device is capable of operating at speeds up to 10 Mbps and is supplied in a 40-pin TSSOP package. The wide variety of features and controlled output levels makes the 74ACT11652DWR an ideal choice for a variety of high performance applications.

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