Product details

Configuration 2:1 SPDT Number of channels 2 Power supply voltage - single (V) 3.3 Protocols Analog, I2C, I3C, LVDS, UART Ron (typ) (Ω) 3 CON (typ) (pF) 1.7 ON-state leakage current (max) (µA) 2 Supply current (typ) (µA) 11 Bandwidth (MHz) 3300 Operating temperature range (°C) -40 to 125 Features 1.8-V compatible control inputs, Powered-off protection Input/output continuous current (max) (mA) 100 Rating Catalog Supply voltage (max) (V) 3.6
Configuration 2:1 SPDT Number of channels 2 Power supply voltage - single (V) 3.3 Protocols Analog, I2C, I3C, LVDS, UART Ron (typ) (Ω) 3 CON (typ) (pF) 1.7 ON-state leakage current (max) (µA) 2 Supply current (typ) (µA) 11 Bandwidth (MHz) 3300 Operating temperature range (°C) -40 to 125 Features 1.8-V compatible control inputs, Powered-off protection Input/output continuous current (max) (mA) 100 Rating Catalog Supply voltage (max) (V) 3.6
UQFN (NKG) 10 2.52 mm² 1.8 x 1.4
  • Compatible with high-speed I 3C signals
  • High performance switch characteristics:
    • Bandwidth (–3 dB): 3.0 GHz
    • R ON (typical): 3 Ω
    • C ON (typical): 1.7 pF
    • T PD (typical): 60 ps
    • T SWEK (typical): 2 ps
  • Low current consumption: 12 µA (typical)
  • Special features:
    • I POFF protection prevents current leakage in Powered-Down state
    • 1.8 V and 3.3 V compatible control inputs (SEL, EN)
  • 3.3 V supply voltage
  • Industrial temperature range: –40 to 125°C
  • Compact 10-pin 1.4 mm × 1.8 mm, UQFN package
  • Compatible with high-speed I 3C signals
  • High performance switch characteristics:
    • Bandwidth (–3 dB): 3.0 GHz
    • R ON (typical): 3 Ω
    • C ON (typical): 1.7 pF
    • T PD (typical): 60 ps
    • T SWEK (typical): 2 ps
  • Low current consumption: 12 µA (typical)
  • Special features:
    • I POFF protection prevents current leakage in Powered-Down state
    • 1.8 V and 3.3 V compatible control inputs (SEL, EN)
  • 3.3 V supply voltage
  • Industrial temperature range: –40 to 125°C
  • Compact 10-pin 1.4 mm × 1.8 mm, UQFN package

The TMUX121 is a high performance bidirectional 2-channel, 2:1 (SPDT) switch that supports both differential and single ended signals. The TMUX121 is an analog passive switch which features power-off protection forcing all I/O pins to be in high-impedance mode when power is not present on the V DD pin. The select and enable pins of the TMUX121 compatible with 1.8 V and 3.3 V control voltage, allowing them to be directly interfaced with the General purpose I/O (GPIO) from low voltage processors. This, along with the low on-resistance and low on capacitance of the device, make the TMUX121 an excellent choice for supporting switching a wide range of analog signals and digital communication protocol standards, including high-speed standards such as I 3C.

The TMUX121 comes in a small 10-pin UQFN package with only 1.8 mm × 1.4 mm in size, which makes it useful when PCB area is limited.

The TMUX121 is a high performance bidirectional 2-channel, 2:1 (SPDT) switch that supports both differential and single ended signals. The TMUX121 is an analog passive switch which features power-off protection forcing all I/O pins to be in high-impedance mode when power is not present on the V DD pin. The select and enable pins of the TMUX121 compatible with 1.8 V and 3.3 V control voltage, allowing them to be directly interfaced with the General purpose I/O (GPIO) from low voltage processors. This, along with the low on-resistance and low on capacitance of the device, make the TMUX121 an excellent choice for supporting switching a wide range of analog signals and digital communication protocol standards, including high-speed standards such as I 3C.

The TMUX121 comes in a small 10-pin UQFN package with only 1.8 mm × 1.4 mm in size, which makes it useful when PCB area is limited.

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* Data sheet TMUX121 Low-Capacitance, 2-Channel, 2:1 Switch with Power-Off Isolationand 1.8-V Logic datasheet PDF | HTML 25 Aug 2023
Application note Designing with Multiple Multiplexers in Series: A Guide to Cascading Multiplexers PDF | HTML 31 Jan 2024
Application brief Important Multiplexer Characteristics for I3C Applications PDF | HTML 27 Jul 2023

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Evaluation board

DIYAMP-EVM — Universal do-it-yourself (DIY) amplifier circuit evaluation module

The DIYAMP-EVM is an evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT-23 and SOIC) (...)

User guide: PDF | HTML
Simulation model

TMUX121 IBIS Model

SCDM327.ZIP (3 KB) - IBIS Model
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UQFN (NKG) 10 View options

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