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

The NMUX1308 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 NMUX1308 is dual source compatible with existing 4851 and 4051 devices. The NMUX1308 extends the digital logic thresholds to be compatible with 1.8 V systems without the need for voltage translation.

The analog signal pins are comprised of a common input/output (Z) and eight independent inputs/outputs (Y0 to Y7). All analog signal pins are bi-directional and support a voltage range from GND to VCC.

All analog signal pins integrate injection current control circuitry. This control circuitry isolates overvoltage spikes on disconnected analog signal pins from coupling to the connected analog signal path, thereby preserving measurement accuracy. Additionally, this integration makes the use of external overvoltage clamp components (e.g. resistive diode network) unnecessary.

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.

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

  • 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

    • Maintains Hi-Z state of analog switch 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


  • Analog or digital multiplexing/demultiplexing

  • System monitoring and diagnostics

  • Enterprise computing

  • Appliances


Type numberProduct statusConfigurationVCC (V)Logic switching levelsRON (Ω)RON(FLAT) (Ω)f(-3dB) (MHz)THD (%)Xtalk (dB)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
NMUX1308BQProductionSP8T-Z1.5 - 5.5CMOS60-325--105very low-40~1259362.013.8DHVQFN16
NMUX1308PWProductionSP8T-Z1.5 - 5.5CMOS60-325--105very low-40~12513964.06.9TSSOP16

(-) dash denotes: "Parameter value not specified for this product"


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
( 9356 914 11115 )
( 9356 914 13118 )

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
NMUX13081.5 V to 5.5 V, 8-channel analog switch multiplexer and demultiplexer with injection-current controlData sheet2024-04-16
AN90051Pin FMEA for NMUX130x familyApplication note2024-02-13
1_8V_General_purpose_injection_control_analog_switch_leaflet1.8 V General purpose SP8T-Z and 2x SP4T-Z analog switches with injection current controlLeaflet2024-03-05
UM90026NMUX1308; NMUX1309 evaluation boardUser manual2024-04-30
SOT763-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm bodyPackage information2023-05-11
SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm bodyPackage information2023-11-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08


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