SN75C3238DW

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The SN75C3238DW is an integrated data transmission circuit developed by Texas Instruments (TI). It includes two digital receivers and a dual bus transceiver. The integrated structure offers multiple functions, making it suitable for various applications. This article will detail the SN75C3238DW application field and working principle.

SN75C3238DW is used in digital systems where local data transfer and status monitoring are important. In such application fields, including avionics, military and industrial control, the integrated circuit has advantages of fast data transmission, anti-interference, and time saving for system maintenance. The IC is often used to connect subsystems with different voltage levels, and also provide high-speed transmission between isolated parts of a system.

The SN75C3238DW contains two digital receiver inputs with Schmitt Trigger logic levels, and a dual bus transceiver with the ability to simultaneously transmit or receive data on both buses. The IC operates with a power supply voltage between 3 and 5.5 volts, and is composed of several sections. The first section is the Port A Input Buffer/ Level Translator, which receives the incoming data from the port A of the digital receiver. The output of this section is then fed into the second section, which is the port A output buffer. This section will convert the logic level of the input signal to a logic level that is compatible with the port A output. From the port A output buffer, the data is transferred onto the port B of the dual bus transceiver.

The Port B Output Buffer/Level Translator will then convert the logic level of the port B signal to the logic levels that are compatible with the port B output, and will be fed into the Port B Receiver. The Port B Receiver, as the last section, converts the incoming data from the dual bus transceiver back to the logic levels that are required by the port B input of the digital receivers. This completes the transmission of the data around the SN75C3238DW circuit.

In addition, the SN75C3238DW has two integrated Input Bus Monitors. One monitors the Port A Input Buffer while the other monitors the Port B Input Bus. The Input Bus Monitors will continuously monitor the incoming data on the bus inputs and send out a signal indicating whether the level of the incoming data is below or above the predetermined threshold level, thus helping the system to react quickly to data fluctuation.

SN75C3238DW is an integrated data transmission circuit that provides fast data transfer and monitoring of data with different logic levels. Its structure contains two digital receivers, a dual-bus transceiver and two input bus monitors, making it suitable for various application fields including avionics, military and industrial control. It is able to receive incoming data from port A and transfer it to port B, as well as translate and convert the logic levels from both ports through its integrated output buffer/ level translator. For the port B, it will also receive and convert incoming data back to the logic levels that are needed by the port B of the digital receivers. Finally, the input bus monitors helps to monitor the incoming data and send out signal to react quickly to data changes.

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