PI90LV028AWE

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The PI90LV028AWE is an interface device developed by the semiconductor company NXP. It is a four-channel, low-voltage open drain driver (also known as an open collector driver). It is designed to provide a regulated 5 V power supply to an open-drain circuit with a minimum supply voltage of 3.3 V and a maximum supply voltage of 20 V. The device features a wide-range of features, including slew-rate control, adjustable turn-on/turn-off times, and active low or floating inputs. There are also a number of safety features, including a wide input/output voltage range and over-voltage protection.

The PI90V028AWE is a versatile device with a number of applications. It is used in automotive, industrial control, automotive safety and medical equipment, as well as in motor control, security, anti-theft and access control systems. It can also be used for low-voltage logic conversion and level shifting applications, as well as driving and receiving signals in various communication protocols, such as USB, I2C, SPI, and UART. It is also used to interface two independent DC power supplies.

The PI90V028AWE is designed to operate in two modes: the open drain mode and the active low output (ALO) mode. In the open drain mode the PI90V028AWE is configured as an open-drain driver, allowing signals to be pulled to a low voltage, while in the ALO mode signals are actively driven high and low depending on the input level. Both modes are capable of driving current or voltage outputs of up to -25mA/40V.

The operating principle of the PI90V028AWE is relatively simple. In open drain mode, the driver is configured in a normally open (NO) configuration. This means that when the input signal is low, the output is also kept low and stays in this state until the input goes high. Once the input goes high, the output is driven to its high logic level, in this case supplying 5V. In ALO (Active Low Output) mode, the outputs remain driven low until the input signal goes low, and then goes high.

The PI90V028AWE is an essential device in a variety of interfaces, enabling a wide range of applications. Its open-drain, ALO and low-voltage operating modes provide reliable and accurate signal conversion in complex systems, while its slew-rate control and over-voltage protection features ensure that the device maintains the correct operating conditions. This makes it an ideal choice for a variety of applications, offering convenience and reliability in a wide range of connected systems.

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