Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Configuration | 1-channel 4:1 precision multiplexer |
| Supply | 1.08 V to 5.5 V single supply |
| Leakage | 3 pA stated low leakage |
| On-Resistance | 2 Ω stated feature |
| Charge Injection | 1.5 pC stated feature |
| Logic | 1.8 V compatible and fail-safe |
| Switching | Bidirectional, rail-to-rail, break-before-make |
| Exact Package / Packing | VSSOP (DGS), 10 pins; 2500-piece large tape and reel |
Product Overview
TMUX1104DGSR is a low-voltage 4:1 precision multiplexer intended for small sensor currents and high-impedance analog nodes where switch leakage can become part of the measurement error. Its 3 pA leakage headline is therefore often more selection-relevant than raw on-resistance.
The 1.08–5.5 V supply range and 1.8 V-compatible fail-safe logic let a low-voltage MCU select signals without special logic translation. The signal path is rail-to-rail within the selected supply and uses break-before-make switching.
DGSR is the leaded VSSOP-10 2500-piece reel option, useful where optical inspection/rework is preferred over the smaller USON alternative.
For related devices, see HKEQGOO’s Analog Switches & Multiplexers category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TMUX1104DGSR |
| Configuration | 1-channel 4:1 precision multiplexer |
| Supply | 1.08 V to 5.5 V single supply |
| Leakage | 3 pA stated low leakage |
| On-Resistance | 2 Ω stated feature |
| Charge Injection | 1.5 pC stated feature |
| Logic | 1.8 V compatible and fail-safe |
| Switching | Bidirectional, rail-to-rail, break-before-make |
| Exact Package / Packing | VSSOP (DGS), 10 pins; 2500-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | 1D7 |
Functional Highlights
Picoamp leakage matters for high-impedance sensors
A few picoamps across megaohm source impedance can still generate microvolt-level error; PCB surface leakage and contamination may exceed the IC leakage if layout/cleanliness are poor.
Low charge injection reduces sampling transients
When multiplexing into a sample/hold or high-impedance node, charge injection determines settling disturbance. Source impedance and acquisition time still need to absorb that transient.
Design Considerations
- Treat board cleanliness/guarding as seriously as the switch’s 3 pA leakage specification.
- Budget settling time from source impedance, mux resistance/capacitance and ADC input network.
- Keep analog inputs within the actual supply rails; fail-safe applies to logic control, not arbitrary overvoltage on the signal path.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists TMUX1104DGSR as Active / Production; VSSOP (DGS), 10 pins; 2500-piece large tape and reel; Level-1-260C-UNLIM; −40°C to +125°C; marking 1D7.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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