Overview
The TMUX1308BQBR, produced by Texas Instruments, is a general-purpose complementary metal-oxide semiconductor (CMOS) multiplexer. This device is specifically the TMUX1308 model, which is an 8:1, single-ended multiplexer. It is designed to support bidirectional analog and digital signals on the source (Sx) and drain (Dx) pins, ranging from GND to VDD. The TMUX1308 features internal injection current control, eliminating the need for external diode and resistor networks, and it does not have an internal diode path to the supply pin, thus preventing unintended power to the supply rail. The device is also 1.8 V logic compatible and includes fail-safe logic to protect against potential damage.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VDD Supply Voltage | -0.5 | 6 | V | |
| Logic Control Input Pin Voltage (EN, A0, A1, A2) | -0.5 | 6 | V | |
| Source or Drain Voltage (Sx, D) | -0.5 | VDD+0.5 | V | |
| Continuous Current through Switch (Sx, D pins) at -40°C to +85°C | -50 | 50 | mA | |
| Total Power Dissipation | 500 | mW | ||
| Storage Temperature | -65 | 150 | °C | |
| Junction Temperature | 150 | °C | ||
| Input Logic High (VIH) at VDD = 1.8 V | 0.95 | 5.5 | V | |
| Input Logic Low (VIL) at VDD = 1.8 V | 0 | 0.6 | V | |
| On-Resistance (RON) at VDD = 5 V, TA = 25°C | 70 | 220 | Ω |
Key Features
- Injection current control to protect the switch and keep input signals within the supply voltage.
- No internal diode path to the supply pin, preventing unintended power to the supply rail.
- Bidirectional signal path supporting both analog and digital signals.
- Rail-to-rail operation.
- 1.8 V logic compatible with both TTL and CMOS logic.
- Fail-safe logic to protect the device from potential damage.
- Break-before-make switching to prevent signal overlap.
- Functional Safety-Capable with documentation available to aid in functional safety system design.
- PIN compatible with industry standard 4051 and 4851 multiplexers.
Applications
- Analog and digital multiplexing and demultiplexing.
- Diagnostics and monitoring.
- Data center switches.
- Remote radio units (RRU).
- Rack servers.
- Electricity meters.
- Appliances.
- Air conditioner units.
- Multifunction printers.
- String inverters.
- IP network cameras.
- Currency counters.
- Off-highway vehicles control systems.
Q & A
- What is the TMUX1308BQBR?
The TMUX1308BQBR is an 8:1, single-ended CMOS multiplexer produced by Texas Instruments.
- What is the supply voltage range for the TMUX1308BQBR?
The supply voltage range is from 1.62 V to 5.5 V.
- Does the TMUX1308BQBR have internal diode paths to the supply pin?
No, it does not have an internal diode path to the supply pin, which prevents unintended power to the supply rail.
- Is the TMUX1308BQBR compatible with TTL and CMOS logic?
- What is the on-resistance of the TMUX1308BQBR at VDD = 5 V and TA = 25°C?
The on-resistance (RON) is typically 70 Ω to 220 Ω.
- What are the key applications of the TMUX1308BQBR?
Key applications include analog and digital multiplexing, diagnostics, data center switches, remote radio units, and various industrial and consumer electronics.
- Does the TMUX1308BQBR support bidirectional signals?
- What is the purpose of the injection current control feature in the TMUX1308BQBR?
The injection current control feature eliminates the need for external diode and resistor networks to protect the switch and keep input signals within the supply voltage.
- Is the TMUX1308BQBR pin compatible with any industry standards?
- What is the fail-safe logic feature in the TMUX1308BQBR?
The fail-safe logic feature allows voltages on the control pins to be applied before the supply pin, protecting the device from potential damage.
- What is the break-before-make switching feature in the TMUX1308BQBR?
The break-before-make switching feature prevents signal overlap by ensuring that one switch is turned off before another is turned on.
