ISL43140IBZ

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The ISL43140IBZ is an interface device that belongs to a larger family of Analog Switches, Multiplexers, Demultiplexers, which are essential components in many electronic product designs. The device is a low voltage, low power, quadruple single-pole, single-throw switch with logic-level enable control and on-state resistance of 50 ohms typically. It offers a logic enable feature to support multiple input paths, while also maintaining low current drain when disabled. This switch is suitable for audio and general purpose switching applications.

The ISL43140IBZ switch is a digital control, monolithic CMOS device that features four independently controlled, SPDT (single-pole double-throw) switches. The logic enable input pins are logic compatible with TTL, DTL, HMOS, and 5-VL CMOS logic families. The on-state resistance of the switch is typically 50 ohms without the need for an external pull-up resistor. The switch also features a low leakage current of 10pA (max).

The ISL43140IBZ uses two logic input pins for control. These two pins are a logic enable pin (EN) and power down pin (PD). EN is used to enable or disable an entire switch, while PD is used to individually disable the switch section at either end of the switch. This allows the user to individually control each switch section of the ISL43140IBZ. In addition, the device also includes an active low reset pin (RST), which can be used to reset the device when required.

The ISL43140IBZ switch offers a wide range of applications, including audio, general purpose switching, and low-speed logic switching. It is also suitable for switching small signals in test and measurement systems, and can be used to switch relay and contactor coils. The switch is designed for small signal, low power operation, which makes it ideal for applications where power consumption is critical.

The working principle of the ISL43140IBZ is fairly simple. The logic enable and power down pins control the switches. When both pins are in a logic high state, the switch sections are enabled and will output the input signal. When one of the pins is in a logic low state, the corresponding switch section is disabled, and the output will be in a high impedance state. The reset pin is used to reset the device.

In summary, the ISL43140IBZ is an interface device that belongs to a larger family of Analog Switches, Multiplexers, Demultiplexers. It offers a logic enable feature to support multiple input paths and a low current drain when disabled. It is suitable for audio and general purpose switching applications, and can also be used in test and measurement systems. The working principle is based on the logic enable and power down pins, which control the switches.

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