MAX391ESE

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MAX391ESE is a dual 16:1/1:16 multiplexer/demultiplexer, operating on 3V to 5.5V supply voltage and consuming 600µA. It is designed using submicron CMOS technology, providing low on-resistance and low power consumption. The low on-resistance (RON) is a prerequisite for the 16:1 multiplexing and demultiplexing applications. It outputs a same level of current in either direction.

This multiplexer/demultiplexer can be used for digital signal routing and for voltage/current translations. It also supports 16-pin DIP (dual inline pin) package, having two low independent on-resistance channels, which further enhances its flexibility. It can be used for signal conditioning, isolation, distribution, select, and translation in multiplexers and demultiplexers designs.

MAX391ESE is provided in 16-pin DIP package or SOT-23-5 plastic surface mounted package. It also operates within wide temperature range of -40°C to +85°C. In addition, its immunity to ESD claim makes it suitable for applications in handheld environments. Furthermore, it is available in two versions, i.e., a version without latch and a version with latch.

Application Field

MAX391ESE is a dual 16:1/1:16 multiplexer/demultiplexer and is especially suitable for signal routing, signal conditioning, isolation, and translation applications. Its wide operating voltage range and low on-resistance are ideal for multiplexing and demultiplexing applications. It is popularly used in data-acquisition systems such as digital signal processing boards and various industrial systems. It is also used for signal switch applications in high-end audio, video, and consumer consumer electronic devices.

Working Principle

The switching circuit of a MAX391ESE consists of two independent 16:1/1:16 multiplexers/demultiplexers with low on-resistance, high immunity to static discharge, and wide operating voltage range. It consists of sixteen channels grouped as eight input channels and eight output channels connected in a cross-bar pattern. The channels are connected to a control line, which selects the I/O functionality.

A control line controls the transfer of signal through each multiplexer channel. The sixteen channels are divided into two groups, with eight channels associated with each multiplexer. Each input is connected to two output channels while each output channel is connected to two input channels. Depending on the applied logic signal, the input channel is connected to the output channel and vice versa.

For each multiplexer, four control lines select the desired transfer of signal. The control lines are active high, which means that logic 1 applied on the control line activates it. The independent multiplexers can be cascaded to switch paths of up to 32 channels.

The MAX391ESE is characterized for its high-speed switching speeds and low static power dissipation. Its switching speed is higher than competing devices in the same voltage range. Additionally, its low static power dissipates is perfect for low noise environments applications.

Conclusion

The MAX391ESE offers a range of advantages to designers, especially with its two independent 16:1/1:16 multiplexers/demultiplexers, low on-resistance, wide operating voltage range, high immune to static discharge, and low static power dissipation. which make it suitable for multiplexing and demultiplexing applications.

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