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NMUX1308ABQ

NMUX1308ABQ Production

1.5 V to 5.5 V, 8-channel analog switch multiplexer and demultiplexer with injection-current control

The NMUX1308A is a general purpose, CMOS, bi-directional, 8 channel analog switch, with an operating voltage range of 1.5 V to 5.5 V. The NMUX1308A is dual source compatible with existing 4851 and 4051 devices. The NMUX1308A extends the digital logic thresholds to be compatible with 1.8 V systems without the need for voltage translation.

The analog signal pins are bi-directional and are comprised of a single common input/output (Z) and eight independent inputs/outputs (Y0 to Y7).

All analog signal pins support overvoltage and undervoltage protection through the integration of injection current control circuitry. This circuit clamps analog signals biased above VCC or biased below GND, saving the need for external overvoltage and undervoltage clamp components (e.g. resistor diode network). This circuit also preserves measurement accuracy of the connected analog signal path by isolating overvoltage events from shifting the device operating voltage.

There are four control signal pins (S0, S1, S2, and E). S0, S1, and S2 determine the analog channels to connect between Z and Yn. E can be used to override S0, S1, and S2, disconnecting all analog channels.

The control signal pins support 1.8 V logic thresholds across all operating voltages. In addition, these pins are 5.5 V tolerant, enabling up to 5.5 V operation independent of supply voltage.
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Product details

Features and benefits

  • SP8T-Z functionality

  • Wide operating range: 1.5 V to 5.5 V

  • Rail-to-Rail operation on analog signal pins

  • Injection current control: 0.1 mV measurement voltage offset up to 10 mA of injected current

  • 1.8 V digital logic thresholds

    • Digital pins compatible with 1.8 V logic thresholds across full VCC range

    • Removes need for up-translation device for compatibility with low voltage GPIOs

  • Ioff circuitry

    • Enables wider latitude for power sequencing considerations

    • Isolates backflow between supply rail and any biased digital/analog input when VCC = 0 V

    • Prevents any biased digital/analog input from backpowering VCC when VCC = 0 V

  • 5.5 V overvoltage tolerant digital inputs

    • Supports switching of 5.5 V digital signals across full VCC operating range

    • Removes need for down-translation when switching thresholds are met

  • Pin compatible with industry standard 4051 and 4851 analog switch products

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C2b exceeds 750 V

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Applications

  • Analog or digital multiplexing/demultiplexing

  • System monitoring and diagnostics

  • Enterprise computing

  • Appliances

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