Overview
The TMUX1248DCKR is a general-purpose 2:1, single-pole double-throw (SPDT) switch produced by Texas Instruments. This device is designed to support a wide operating range of 1.08 V to 5.5 V, making it versatile for various applications. It features bidirectional analog and digital signal paths on the source (Sx) and drain (D) pins, ranging from GND to VDD. The TMUX1248DCKR is controlled by a single select (SEL) pin, which determines which of the two source pins is connected to the drain pin. With a low supply current of 7 nA, this device is particularly suitable for handheld or low-power applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 1.08 to 5.5 | V |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | SOT-SC70 (DCK) | - |
| Pins | 6 | - |
| On-Resistance | 3 | Ω |
| Supply Current | 7 | nA |
| Input/Output Continuous Current (max) | 30 | mA |
| Logic Control Input Voltage | -0.5 to 6 | V |
| ESD Rating (HBM) | ±2000 | V |
| ESD Rating (CDM) | ±750 | V |
Key Features
- Rail-to-Rail Operation: Supports signal paths from GND to VDD.
- Bidirectional Signal Path: Conducts equally well from source to drain or from drain to source.
- 1.8 V Logic Compatible: Allows operation with low voltage logic signals.
- Fail-Safe Logic: Enables operation up to 5.5 V on control pins regardless of the supply pin state.
- Low On-Resistance: 3 Ω, ensuring minimal signal attenuation.
- Wide Supply Range: Operates from 1.08 V to 5.5 V.
- Low Supply Current: 7 nA, suitable for low-power applications.
- Break-Before-Make Switching: Prevents both source pins from being enabled simultaneously, adding system robustness.
Applications
- Handheld and Low-Power Devices: Ideal due to its low supply current and wide operating voltage range.
- Switchable Operational Amplifier Gain Setting: Can be used to configure gain settings in operational amplifier circuits.
- General Purpose Switching: Suitable for various analog and digital signal switching applications.
- System Design with 1.8 V Logic: Compatible with systems having 1.8 V I/O rails, reducing system complexity and cost.
Q & A
- What is the operating voltage range of the TMUX1248DCKR?
The TMUX1248DCKR operates from 1.08 V to 5.5 V.
- What is the package type of the TMUX1248DCKR?
The TMUX1248DCKR comes in a SOT-SC70 (DCK) package.
- What is the on-resistance of the TMUX1248DCKR?
The on-resistance is 3 Ω.
- Is the TMUX1248DCKR suitable for low-power applications?
Yes, it has a low supply current of 7 nA, making it suitable for low-power applications.
- What is the break-before-make switching feature?
This feature prevents both source pins from being enabled simultaneously, adding robustness to the system.
- Can the TMUX1248DCKR handle 1.8 V logic signals?
Yes, it has 1.8 V logic compatible control inputs.
- What is the maximum continuous current for the TMUX1248DCKR?
The maximum continuous current is 30 mA.
- How does the fail-safe logic feature work?
The fail-safe logic feature allows voltages on the control pins to be applied before the supply pin or at a higher voltage than the supply pin up to 5.5 V, protecting the device from potential damage.
- What is the recommended power supply decoupling for the TMUX1248DCKR?
A supply decoupling capacitor ranging from 0.1 μF to 10 μF from VDD to ground is recommended).
- Is the TMUX1248DCKR ESD sensitive?
Yes, it is sensitive to electrostatic discharge (ESD) and requires proper handling and installation procedures to avoid damage).
