What should engineers review before using TMUX7221DGSR?

Keep source and drain voltages within VSS to VDD, use a 4.5 V to 44 V supply differential, observe channel-current and thermal limits, and decouple both VDD and VSS to GND. SEL inputs have weak internal pull-down resistors, but unused SEL pins should be tied to GND.

What is the pinout of TMUX7221DGSR?

Use the TMUX7221DGSR datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about TMUX7221DGSR pinout to locate pins, power rails, and interface signals before layout.

TMUX7221DGSR Datasheet, Specs, Alternatives & ECAD | Texas Instruments

AI summary

TMUX7221DGSR is a dual, normally-open SPST precision switch for analog or digital signals from VSS to VDD, with up to 44 V supply span and 1.8 V-compatible control.

Best for

Precision analog signal routing
Industrial control and data acquisition
High-voltage single-supply or bipolar analog switching

Avoid if

The design requires a switch that defaults on without using the TMUX7222 variant
Load current or dissipation exceeds the package limits
A very low-capacitance signal path is required

Check before use

Confirm SELx high = channel on for TMUX7221
Confirm the VSS-to-VDD signal range at all operating conditions
Assess RON variation, leakage, charge injection, and 110 pF to 120 pF on-capacitance for the circuit

Key specifications

Configuration: 2-channel, 1:1 SPST
Supply range: 4.5 V to 44 V; ±4.5 V to ±22 V
On-resistance: 2.1 Ω typical at ±15 V, 25°C
Control logic: 1.8 V compatible; VIH 1.3 V minimum
Temperature range: -40°C to +125°C

Compliance & Environment

RoHS: Yes
REACH: -
MSL: Level 2, 260°C peak reflow, 1 year
ECCN: -
HTSUS: -

Application

Industrial controls and PLC modulesData acquisition and analog input modulesSemiconductor and optical test equipmentPatient monitoring and diagnostics

Datasheet

scdu038

800 KB

Datasheet AI

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Alternative components

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Design and risk insights

Questions & answers

TMUX7221DGSR is a Texas Instruments dual-channel CMOS 1:1 SPST analog switch in a 10-pin DGS VSSOP package. Each channel connects Sx to Dx when its SELx input is logic high.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is TMUX7221DGSR?+×

What should engineers review before using TMUX7221DGSR?+×

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