74LVC244AT20-13

The 74LVC244AT20-13 is a member of the Texas Instruments’ low voltage logic family. This octal transceiver uses eight independent non-inverting buffers and three-state outputs. The device operates from a 2.0V to 3.6V supply voltage with up to 24mA at 3.6V output driver. The device is specified for a slew rate of 1.3V/ns and a commercial operating temperature range of 0°C to +70°C

Application Field

The 74LVC244AT20-13 is ideal for applications in broadcast configuration, port expanders, demultiplexers, and other applications requiring high current output. Its robust design with reduced offset voltage makes it suitable for use with most high performance logic circuits. It is capable of driving multiple devices in parallel, reducing the number of logic chips needed for high speed circuit applications.

The ability of the device to efficiently transmit data between multiple devices can make it ideal for applications such as RFID card readers and gaming consoles. Its 3-state outputs also make it suitable for multiplexers, allowing a single data line to switch between multiple data sources.

Working Principle

The 74LVC244AT20-13 contains eight buffers and three-state outputs. Each buffer consists of an enable pin, two data pins, two enable drain pins, and two output pins . When the enable pin is driven HIGH, the enable pins connect to the data pins, allowing data to flow from the data pins on to the output pins. When the enable pin is drive LOW, the enable pins disconnect from the data pins, and the output pins are placed in a high impedance state.

In addition to being used as a simple transceiver, the 74LVC244AT20-13 can also be configured in broadcast mode, allowing data to flow to all outputs simultaneously. This is accomplished by connecting the enable pin to a single data pin, and putting the remaining data pins in a high impedance state. The output pins will then be driven with a logic 1

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