SN74LVC2244ADBQR

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The SN74LVC2244ADBQR is a highly versatile device from Texas Instruments and classified as a Logic – Buffers, Drivers, Receivers, Transceivers. It is a low voltage, high-speed CMOS device, capable of providing bus interface, port expansion and data conversion. The main functions for this SN74LVC2244ADBQR include logic-level compatible (LVC logic) hex buffer/driver with a 3-state output and two line-selectable power supply options of +1.65 V to +3.6 V or +2.5 V to +5.5 V.

The SN74LVC2244ADBQR is designed with the ability to operate at the low-voltage level of 1.7 V to 2.5 V, providing customers with the ability to leverage lower cost and energy efficiency with their familiar ASIC and FPGA designs, enabling them to meet requirements of lower voltage and power. This device is ideal for low-power applications including battery powered, smart cards, LCD displays, or FPGA or SoC devices, as well as for general applications such as noise immunity, and temperature dependencies of external components from the device.

Hex buffer/drivers are versatile devices that may be used to drive the bus lines, interface address and data, or multiplexed digital information. Data retention is ensured, even if one or more of the power supplies is turned off. The SN74LVC2244ADBQR supports current-limiting termination resistors of 50 Ω to VCC, making it suitable for driving multiplexed applications.

The SN74LVC2244ADBQR is composed of 6 open drain output ports, each with a 3-state feature controlled by its own 3-state enable input. This 3-state enable input takes the form of an active low enable, which means it should be set low to enable the output, and high to disable it. This enables the output to be tristated or neutral which allows another bus master to take control of the bus line.

The active-low enable inputs also can be connected to external logic circuitry, so that the driver/receivers can be enabled or disabled in a larger system environment. The outputs, however, are not rail-to-rail; the device is specified to support outputs from 0.1 V to VCC, with the output remaining off if the enable is high. The devices support a wide range of current-limiting termination resistors, up to 50 Ω. This makes them ideal for driving multiplexed applications.

The SN74LVC2244ADBQR also includes two configurable power-supply pins. These pins are adjacent to the input and output pins, allowing for a selection for either the +1.65 V to +3.6 V or the +2.5 V to +5.5 V operating voltage range. This feature allows customers to leverage the cost and energy efficiency benefits of the wide range of supply voltages, while providing the compatibility of the familiar logic-level compatible operating voltage.

The SN74LVC2244ADBQR is ideal for a variety of applications, including application scenarios such as low-power designs, LCD displays, smart cards, FPGA and SoC designs, power-on reset (POR) bus interface, noise immunity, and temperature dependencies of external components from the device. The versatility of the device, along with its low power operation, makes it a great choice for many applications that require low voltage levels but need multiple lines to be driven simultaneously.

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