SN74ACT240PWRG4

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SN74ACT240PWRG4 is a low-power quad bus-buffer which is classified under Logic – Buffers, Drivers, Receivers, Transceivers. It is a device which works perfectly for high-speed. And it is mainly used as buffer or receiver in digital systems. It is mainly developed for low-power, low-voltage systems, which are used for automotive, access control, and industrial control applications.

The SN74ACT240PWRG4 is an advanced TTL logic device which provides full logic levels switching on 16 individual bus-buffers. It provides an active-low, open-drain output stage, high-impedance when de-asserted. This device operates from 2.7V to 5.5V. It also meets all the AEC-Q100 Grade 1 requirements. It offers up to 75% power savings compared to standard 74ACT input buffers.

The SN74ACT240PWRG4 is basically divided into 4 independent 8-bit-wide buffered regional buses. All the buses are TTL compatible. The bus width is by 2 pins on each interface. The inputs and outputs are active-low 3-state output buffers and have an open drain active-low output stage. All the output stages have an internal pull-up device which ensures that all output pins are high-impedance when de-asserted. The bus-buffers also have a built-in power-off protection, so that the input impedance is kept at high impedance even when the device is powered off.

The SN74ACT240PWRG4 has three modes of operation, namely active low, open drain, and active low and partially transparent. In active low mode, the output of the device is switched when the input is Low; in open drain mode, the output of the device is idle and the input is High; and in active low and partially transparent mode, the output of the device is low and the input is High. The active low and partially transparent mode helps to reduce power consumption compared to active low mode.

The application field of the SN74ACT240PWRG4 mainly includes automotive, access control and industrial control. The automotive applications include crash sensors, keyless entry, body control systems and engine controls. The access control applications include access control systems and motion detection. The industrial control applications include actuators, sequencers and welding systems.

In conclusion, the SN74ACT240PWRG4 is a low-cost and low-power device which meets the AEC-Q100 Grade 1 requirements. It is used as a buffer or receiver in digital systems which are used for automotive, access control, and industrial control applications. It also provides full logic levels switching on 16 individual bus-buffers. It offers a 3-state output buffer and power-off protection and has three modes of operation – active low, open drain, and active low and partially transparent.

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