74ACTQ244SJ

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The 74ACTQ244SJ is a Quad, bidirectional transceiver designed for digital data transmission applications. It is a member of the Texas Instruments 74ACTQ family of logic devices. This device is designed to interface TTL-compatible logic signals to a wide range of digital devices. This product operates with both active high and active low logic levels, making it an ideal choice for a system-wide, flexible logic solution.

The 74ACTQ244SJ features one active high or one active low logic signal for each input and/or output. This product is suitable for systems with modest data rate requirements and minimal noise immunity.

Application Field

The 74ACTQ244SJ can be used in multiple ways. It can be used to convert a traditional parallel data stream into a serial data stream, or conversely to convert a serial data stream into a parallel data stream. It can also be used to translate logic levels in a bidirectional manner. It can also be used in data transmission and reception applications to convert parallel digital logic signals into serial logic signals.

This device is well suited to applications such as personal computers, digital communication systems, automotive systems, security systems, data acquisition systems, and processor-based systems.

Working Principle

The 74ACTQ244SJ quad bidirectional transceiver is capable of converting a parallel data stream into a serial data stream or vice versa. It is used to translate logic levels in a bidirectional manner. The device is designed to accept an active high or active low logic signal per input and output, and is suitable for systems with low to moderate data rate requirements.

The device is composed of four separate transceivers, each with a separate enable input, data input and data output buffer. The enable inputs select between the transmission and reception of data. When enabled, the device will transmit data from the input buffer to the output buffer. When disabled, the device will receive data from the input buffer.

The device also has a reset (RST) input. When this input is low, all four receivers and transmitters will be disabled. This ensures that all outputs start in a known state and any communication through the device is consistent.

The 74ACTQ244SJ also includes control signals for the output enable, direction and flow control. These signals can be used for transmitting or receiving data using the 74ACTQ244SJ as either a transmitter or receiver.

The device is designed to interface to TTL-compatible logic levels. The outputs are open-drain driver outputs, and require an external pull-up resistor when used in active mode. The device can withstand a supply voltage up to 7.0 volts.

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