Overview
The TMUX6121DGSR, produced by Texas Instruments, is a precision, dual single-pole single-throw (SPST) switch. This device is part of the TMUX612x family, which includes the TMUX6121, TMUX6122, and TMUX6123. These modern complementary metal-oxide semiconductor (CMOS) devices are designed to operate with a wide supply range, supporting both dual supplies (±5 V to ±16.5 V) and single supplies (10 V to 16.5 V), or even asymmetric supplies. The TMUX6121DGSR is particularly suited for high-precision measurement applications due to its low leakage current and low charge injection characteristics.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD to VSS) | -36 | 36 | V | |
| On-Resistance (RON) | 230 | 265 | 405 | Ω |
| On-Capacitance (CS(ON), CD(ON)) | 4.2 | 5 | pF | |
| Input Leakage Current (IANA_IN) | -0.25 | 0.1 | nA | |
| Charge Injection (QJ) | 0.14 | pC | ||
| Switch Turn-On Time (tON) | 68 | 121 | ns | |
| Switch Turn-Off Time (tOFF) | 57 | 85 | ns | |
| ESD Protection (HBM) | ±2 | kV | ||
| Ambient Temperature (TA) | -55 | 140 | °C | |
| Package Type | VSSOP (10-pin) |
Key Features
- Wide supply range: ±5 V to ±16.5 V (dual) or 10 V to 16.5 V (single)
- Latch-up performance meets 100 mA per JESD78 Class II Level A on all pins
- Low on-capacitance: 4.2 pF
- Low input leakage: 0.5 pA
- Low charge injection: 0.51 pC
- Rail-to-rail operation
- Low on-resistance: 120 Ω
- Fast switch turn-on time: 68 ns
- Break-before-make switching (TMUX6123 only)
- SELx pin connectable to VDD with integrated pull-down
- Logic levels: 2 V to VDD
- Low supply current: 16 µA
- Human Body Model (HBM) ESD protection: ± 2 kV on all pins
- Industry-standard VSSOP package
Applications
- Factory automation and industrial process controls
- Programmable logic controllers (PLC)
- Analog input modules
- ATE test equipment
- Digital multimeters
- Battery monitoring systems
Q & A
- What is the supply voltage range for the TMUX6121DGSR?
The TMUX6121DGSR supports a wide supply range of ±5 V to ±16.5 V (dual) or 10 V to 16.5 V (single).
- What is the on-resistance of the TMUX6121DGSR?
The on-resistance (RON) of the TMUX6121DGSR is typically 265 Ω, with a range of 230 Ω to 405 Ω.
- What is the input leakage current of the TMUX6121DGSR?
The input leakage current is very low, typically around 0.5 pA.
- Does the TMUX6121DGSR have ESD protection?
- What is the switch turn-on time for the TMUX6121DGSR?
The switch turn-on time (tON) is typically 68 ns, with a range of 68 ns to 121 ns.
- What package type is the TMUX6121DGSR available in?
The TMUX6121DGSR is available in an industry-standard VSSOP (10-pin) package.
- What are the typical applications for the TMUX6121DGSR?
The TMUX6121DGSR is used in factory automation, industrial process controls, programmable logic controllers (PLC), analog input modules, ATE test equipment, digital multimeters, and battery monitoring systems.
- Does the TMUX6121DGSR support break-before-make switching?
The TMUX6123, which is part of the same family, supports break-before-make switching, but this feature is not present in the TMUX6121.
- What is the logic level compatibility of the TMUX6121DGSR?
The TMUX6121DGSR has digital inputs with transistor-transistor logic (TTL) compatible thresholds, ensuring both TTL and CMOS logic compatibility.
- How does the SELx pin function in the TMUX6121DGSR?
The SELx pin is a logic control input that can be connected to VDD with an integrated pull-down.
