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TMUX2819
  • TMUX2819
  • TMUX2819

TMUX2819

ACTIVE

+/-5.5-V beyond the supply, 2:1 (SPDT) 1-channel switch with 1.2-V compatible logic

Texas Instruments TMUX2819 Product Info

1 April 2026 5

Parameters

Configuration

2:1 SPDT

Number of channels

1

Power supply voltage - single (V)

1.8, 2.5, 3.3, 5

Protocols

Analog Audio

Ron (typ) (Ω)

0.16

CON (typ) (pF)

40

ON-state leakage current (max) (µA)

1

Supply current (typ) (µA)

50

Operating temperature range (°C)

-40 to 125

Features

1.2-V compatible control inputs, 1.8-V compatible control inputs, Fail-safe logic, Integrated pulldown resistor on logic pin, Powered-off protection, Supports input voltage beyond supply, Supports negative voltages

Input/output continuous current (max) (A)

1.1

Rating

Catalog

Drain supply voltage (max) (V)

5.5

Supply voltage (max) (V)

5.5

Package

WSON (DSG)-8-4 mm² 2 x 2

Features

  • Supply range: 1.8V to 5.5V
  • Beyond the supply signal range:-5.5V to 5.5V
  • High current support: 1.1A (maximum)
  • Ultra-low on-resistance: 0.16Ω
  • Low on-resistance flatness: 1.0mΩ
  • Low THD+N: 0.001% (-100dB)
  • –40°C to +125°C operating temperature
  • Power-Off Protection
  • 1.8V logic compatible at 5V VDD
  • 1.2V logic compatible at 1.8V VDD
  • Integrated Pull-Down Resistor on Logic Pins
  • Fail-safe logic
  • Break-before-make switching
  • Supply range: 1.8V to 5.5V
  • Beyond the supply signal range:-5.5V to 5.5V
  • High current support: 1.1A (maximum)
  • Ultra-low on-resistance: 0.16Ω
  • Low on-resistance flatness: 1.0mΩ
  • Low THD+N: 0.001% (-100dB)
  • –40°C to +125°C operating temperature
  • Power-Off Protection
  • 1.8V logic compatible at 5V VDD
  • 1.2V logic compatible at 1.8V VDD
  • Integrated Pull-Down Resistor on Logic Pins
  • Fail-safe logic
  • Break-before-make switching

Description

The TMUX28xx is a complementary metal-oxide semiconductor (CMOS) multiplexer with 2 configurations available: 1:1, single-pole, single-throw (SPST) 2-channel (TMUX2821) and 2:1, single-pole, double-throw (SPDT) 1-channel (TMUX2819). This device works with a single supply (1.8V to 5.5V), but can pass bidirectional analog and digital signals beyond the supply from -5.5V to 5.5V.

The TMUX28xx also features bidirectional powered off protection up to ±5.5V, which isolates the switch even when there is no supply voltage present (VDD = 0V). Without this protection feature, any voltage on the switch can back-power the supply rail through an internal ESD diode and cause potential damage to the rest of the system.

With 0.001% THD+N and 1mΩ RON-flatness, the TMUX28xx is an excellent choice for passing precision analog and audio signals without adding distortion.

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