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Introduction

The MAX4717EUB+ is an 8:1 analog multiplexer/demultiplexer (also known as an SPST switch) with an independent enable control. The device has a low on-resistance of only 2 Ω, an operating voltage of 1.8V to 6V and an input voltage range of -0.3V to VCC+0.3V. The digital logic inputs feature ESD protection up to 6 kV and are CMOS and TTL compatible.

Application Field

The MAX4717EUB+ is suitable for a wide range of both consumer and industrial applications. It can be used in a variety of analog signal switching applications, such as audio, video and data signal routing and switching. It can also be used in sensor and detector select applications, as well as PWM and digital logic switching applications.

Working Principle

The MAX4717EUB+ operates using a 4-bit serial input, which can select one of eight external channels for connection to a n-channel MOSFET common drain. The enable inputs (CE1 and CE2) control the operation of the multiplexer/demultiplexer by setting the drain voltage to high impedance when inactive, or to VDD when active.

When activated, the logic signals from the serial port control the switching transistor between the selected channel and the common drain. The on-resistance of 2 Ω makes these switches ideal for low voltage, low power applications, while the ESD protection up to 6 kV makes them suitable for use in applications where high noise immunity is required.

Conclusion

The MAX4717EUB+ is a versatile 8:1 analog multiplexer/demultiplexer suitable for a wide range of consumer and industrial applications. It has a low on-resistance and ESD protection up to 6 kV, making it suitable for low-power, high-noise environments. The device operates using a 4-bit serial input and an enable control, making it a cost-effective solution for signal routing and switching applications.

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