Product details

Configuration 1:1 SPST Number of channels (#) 4 Power supply voltage - single (V) 12, 16, 20, 36, 44 Ron (Typ) (Ohms) 9.5 ON-state leakage current (Max) (µA) 0.025 Bandwidth (MHz) 500 Operating temperature range (C) -40 to 125 Features 1.8-V compatible control inputs, Break-before-make, Fail-safe logic, Overvoltage protection Input/output continuous current (Max) (mA) 50 Rating Catalog CON (Typ) (pF) 20 Supply current (Typ) (uA) 300
Configuration 1:1 SPST Number of channels (#) 4 Power supply voltage - single (V) 12, 16, 20, 36, 44 Ron (Typ) (Ohms) 9.5 ON-state leakage current (Max) (µA) 0.025 Bandwidth (MHz) 500 Operating temperature range (C) -40 to 125 Features 1.8-V compatible control inputs, Break-before-make, Fail-safe logic, Overvoltage protection Input/output continuous current (Max) (mA) 50 Rating Catalog CON (Typ) (pF) 20 Supply current (Typ) (uA) 300
  • Wide supply range: 8 V to 44 V single supply ±5 V to ±22 V dual supply
  • Channel protector without need for dedicated select pin per channel
    • Reduces number of control logic signals to route across PCB
  • Integrated fault protection:
    • Overvoltage protection, source to supplies or source to drain: ±85 V
    • Overvoltage protection: ±60 V
    • Powered-off protection: ±60 V
    • Interrupt flags to indicate fault status
    • Adjustable overvoltage triggering thresholds
      • VFP: 3 V to VDD, VFN: 0 V to VSS
    • Adjustable output behavior (clamped or open) during fault
  • Latch-up immunity by device construction
  • 6 kV human body model (HBM) ESD rating
  • Low On-Resistance: 8.3 Ω typical
  • Flat On-Resistance: 5 mΩ typical
  • Industry-standard TSSOP and smaller WQFN package
  • Wide supply range: 8 V to 44 V single supply ±5 V to ±22 V dual supply
  • Channel protector without need for dedicated select pin per channel
    • Reduces number of control logic signals to route across PCB
  • Integrated fault protection:
    • Overvoltage protection, source to supplies or source to drain: ±85 V
    • Overvoltage protection: ±60 V
    • Powered-off protection: ±60 V
    • Interrupt flags to indicate fault status
    • Adjustable overvoltage triggering thresholds
      • VFP: 3 V to VDD, VFN: 0 V to VSS
    • Adjustable output behavior (clamped or open) during fault
  • Latch-up immunity by device construction
  • 6 kV human body model (HBM) ESD rating
  • Low On-Resistance: 8.3 Ω typical
  • Flat On-Resistance: 5 mΩ typical
  • Industry-standard TSSOP and smaller WQFN package

The TMUX7462F is a four-channel protector that can be placed on the front end of a signal path to protect sensitive components downstream from damage caused by overvoltage faults. Each of the 4 channels has an internal switch that is turned-off automatically upon occurrence of an overvoltage fault without the need of external controls. This simplifies robust system level protection designs by removing the need for control signals for each channel of the device. The overvoltage protection is available in powered and powered-off conditions, making the TMUX7462F suitable for applications where power supply sequencing cannot be precisely controlled.

The switch channels remain in the high impedance state (regardless of switch input conditions) when the devices power supplies are floating, grounded, or at a level that is below the undervoltage (UV) threshold. If the signal level on any Sx pin exceeds the fault supply (VFP or VFN) by a threshold voltage (VT), then the Sx pin becomes high impedance and an output fault flag is asserted low to indicate a fault condition under normal operation. The drain pin (Dx) is either pulled to the fault supply voltage that was exceeded or left floating depending on the DR control logic.

The device operates with dual supplies (±5 V to ±22 V), a single supply (8 V to 44 V), or asymmetric supplies. The low and flat on-resistance of the device makes the TMUX7462F an ideal solution for data acquisition applications where excellent linearity and low distortion is critical.

The TMUX7462F is a four-channel protector that can be placed on the front end of a signal path to protect sensitive components downstream from damage caused by overvoltage faults. Each of the 4 channels has an internal switch that is turned-off automatically upon occurrence of an overvoltage fault without the need of external controls. This simplifies robust system level protection designs by removing the need for control signals for each channel of the device. The overvoltage protection is available in powered and powered-off conditions, making the TMUX7462F suitable for applications where power supply sequencing cannot be precisely controlled.

The switch channels remain in the high impedance state (regardless of switch input conditions) when the devices power supplies are floating, grounded, or at a level that is below the undervoltage (UV) threshold. If the signal level on any Sx pin exceeds the fault supply (VFP or VFN) by a threshold voltage (VT), then the Sx pin becomes high impedance and an output fault flag is asserted low to indicate a fault condition under normal operation. The drain pin (Dx) is either pulled to the fault supply voltage that was exceeded or left floating depending on the DR control logic.

The device operates with dual supplies (±5 V to ±22 V), a single supply (8 V to 44 V), or asymmetric supplies. The low and flat on-resistance of the device makes the TMUX7462F an ideal solution for data acquisition applications where excellent linearity and low distortion is critical.

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Technical documentation

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Type Title Date
* Data sheet TMUX7462F ±60 V Fault-Protected, Latch-Up Immune, Quad Channel Protector with Adjustable Fault Threshold and 1.8-V Logic datasheet (Rev. A) 19 Oct 2021
Application note Protection Against Overvoltage Events, Miswiring, and Common Mode Voltages 07 Oct 2021
Application note Improving Analog Input Modules Reliability Using Fault Protected Multiplexers 28 Sep 2021

Design & development

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Evaluation board

TMUX741-746EVM — TMUX741xF and TMUX7462F evaluation module for the PW and RRP packages

The TMUX741-746EVM supports evaluation of the TMUX741xF and TMUX746xF device families in both TSSOP (PW) and WQFN (RRP) packages. This evaluation module (EVM) can be used for quick prototyping and testing of the TMUX741xF and TMUX746xF device families for DC parameter evaluation.

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Interface adapter

LEADED-ADAPTER1 — Surface mount to DIP header adapter for quick testing of TI's 5, 8, 10, 16 & 24-pin leaded packages

The EVM-LEADED1 board allows for quick testing and bread boarding of TI's common leaded packages.  The board has footprints to convert TI's D, DBQ, DCT,DCU, DDF, DGS, DGV, and PW surface mount packages to 100mil DIP headers.     

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Interface adapter

LEADLESS-ADAPTER1 — Surface mount to DIP header adapter for testing of TI's 6,8,10,12,14,16, & 20-pin leadless packages

The EVM-LEADLESS1 board allows for quick testing and bread boarding of TI's common leadless packages.  The board has footprints to convert TI's DRC, DTP, DQE, RBW, RGY, RSE, RSV, RSW RTE, RTJ, RUK , RUC, RUG, RUM,RUT and YZP surface mount packages to 100mil DIP headers.
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Simulation model

TMUX7462F IBIS Model

SCDM272.ZIP (31 KB) - IBIS Model
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