74LVQ244TTR

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The 74LVQ244TTR is a popular high-speed 3-state buffer from Texas Instrument\'s second-generation low-voltage CMOS logic family. It is ideal for fast, edge-rate switching between two independent sources. The 74LVQ244TTR features eight non-inverting outputs, which are controlled by a single control input. The principal application fields of the 74LVQ244TTR include bus-interface, transmission-gate drivers, level transponders, and multiplexing.

The 74LVQ244TTR is a 3-state buffer meaning that the outputs can assume one of three states: high, low, or high-impedance. The outputs are in the ‘high-impedance’ state when the control input is in the low state. This effectively isolates the outputs from the connected sources until the control input is switched to the high state.

The 74LVQ244TTR is constructed with a combination of p-type and n-type metal oxide semiconductor field effect transistors (MOSFETs) on a single chip. The active low output controlling signal is connected to the gate of a p-type MOSFET, known as an enhancement-type MOSFET. When the controlling signal is not activated, the output pins are isolated from the connected sources due to the high threshold voltage of the p-type MOSFETs.

The inputs of the 74LVQ244TTR take standard CMOS logic levels. The outputs are buffered to ensure high-speed switching performance. The buffering also makes the output current independent of the load capacitance, permitting the device to drive several outputs simultaneously. The outputs are open-drain outputs with pull-up resistors provided by the user.

The 74LVQ244TTR is designed to withstand a maximum voltage of 4.5 V and contains built-in ESD protection. The device operates over a broad temperature range of -40°C to 85°C. It is available in packages including the 8-pin small outline integrated circuit, the 8-pin leadless chip carrier, and the 8-pin plastic dual-in-line package.

The 74LVQ244TTR is a useful and versatile 3-state buffer that can be applied to a variety of electronic circuits. Its combination of high-speed switching, low voltage operation, and low cost make it an attractive choice for a wide range of applications. The device is widely used in bus-interface, transmission-gate drivers, level transponders, and multiplexing applications.

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