MAX391ESE+

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MAX391ESE+ Application Field and Working Principle

The MAX391ESE+ is a low-power dual analog multiplexer/ demultiplexer device from Maxim Integrated, belonging to the family of interface solutions. This device belongs to the category of analog switches, multiplexers, demultiplexers.

Description

The MAX391ESE+ is an ultra low power device, with a quiescent supply current of only 3μAtypically. The device features a dual analog multiplexer and demultiplexer combination, with both multiplexers and demultiplexers each offering a maximum of 4 channels. It comes in an 8-pin small outline integrated circuit (SOIC) package. It features reduced signal-path propagation delay of 3.2ns, low input capacitance of 2.2pF and breaks before make protections on all its channels. This device is rated for operation from -40°C to +85°C temperature range.

Features and Benefits

The device offers a wide range of features, benefits and specifications that make it ideal for integration into several device applications. Some of these features include:

• On-chip 2:1 multiplexers and demultiplexers
• Low RON/ Roff gives better signal integrity
• Break-before-make switching ensures low crosstalk
• Reference-level shift capability
• Fast switching times
• Low supply current
• Robustness to ESD and latch-up

Applications

The MAX391ESE+ is suitable for use in several applications, such as communication and storage systems due to its low power, high speed and wide operating temperature range. Other applications include medical instruments and systems, cell-phones and battery-powered applications. It can also be used in high voltage (HV) switch applications including high-speed sequential analog switches.

Working Principle

The MAX391ESE+ device utilizes a multiplexer/ demultiplexer architecture. In this architecture, the multiplexer takes multiple input signals and selects one of them to be transmitted to the output channel. On the other hand, the demultiplexer takes the output signal from the multiplexer and routes it to one of the multiple output channels. Both the multiplexer and the demultiplexers can have up to four channels in this architecture.

The MAX391ESE+ device is a low-power single-ended multiplexer/ demultiplexer that utilizes a standard CMOS process to achieve ultra-low power levels. The select logic is enabled when the digital input is low, allowing the user to select the appropriate analog input voltage. The device also includes a differential amplifier for reference-level shifting for improved performance and low power consumption. The device can also be used in high voltage switch applications to achieve higher switching frequencies.

Conclusion

The MAX391ESE+ is a dual analog multiplexer/ demultiplexer device from Maxim Integrated that provides ultra low power, high speed, and wide operating temperature range. Its features, benefits and specifications make it ideal for use in medical instruments, communication and storage systems, cell-phones and battery-powered applications. It can also be used in high voltage switch applications. The device utilizes an on-chip 2:1 multiplexers and demultiplexers combination with break before make switching, reference-level shifting and fast switching times for improved performance.

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