TMUX7208 - 44V Latch-Up Immune 8:1 MUX | Texas Instruments
MPN: TMUX7208 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for TMUX7208 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TMUX7208PWR
✅ Drop-In📋 Reference alternative (not in catalog)
TMUX7208M
✅ Drop-In📋 Reference alternative (not in catalog)
TMUX7209PWR
⚡ Same Package📋 Reference alternative (not in catalog)
ADG708
✅ Drop-In📋 Reference alternative (not in catalog)
MAX4781
✅ Drop-In📋 Reference alternative (not in catalog)
TMUX7208 Maximum Ratings & Electrical Characteristics
| Configuration | 8:1 Single Channel |
| Number of Channels | 1 |
| On-Resistance (Typical) | 4 Ω |
| On-Resistance (Max) | 5.4 Ω |
| Charge Injection | 3 pC |
| Single Supply Voltage Range | 4.5 V to 44 V |
| Dual Supply Voltage Range | ±4.5 V to ±22 V |
| Asymmetric Supply Support | Yes (e.g., VDD=12V, VSS=-5V) |
| Maximum Continuous Current | 300 mA |
| Logic Compatibility | 1.8 V compatible |
| Latch-Up Immunity | Yes |
| Operating Temperature Range | -40°C to +125°C |
| Package | 16-TSSOP (PW) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
TMUX7208 Pin Configuration
| Pin 1 | S1 — Input channel 1 |
| Pin 2 | S2 — Input channel 2 |
| Pin 3 | S3 — Input channel 3 |
| Pin 4 | S4 — Input channel 4 |
| Pin 5 | S5 — Input channel 5 |
| Pin 6 | S6 — Input channel 6 |
| Pin 7 | S7 — Input channel 7 |
| Pin 8 | S8 — Input channel 8 |
| Pin 9 | GND — Ground |
| Pin 10 | EN — Enable (active high) |
| Pin 11 | A0 — Address bit 0 |
| Pin 12 | A1 — Address bit 1 |
| Pin 13 | A2 — Address bit 2 |
| Pin 14 | D — Common output |
| Pin 15 | VSS — Negative supply (or GND in single supply) |
| Pin 16 | VDD — Positive supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TMUX7208 is suitable for 6 applications: Data Acquisition Systems, Test and Measurement Equipment, Industrial Process Control, Battery Monitoring Systems, Audio Signal Routing, Automotive Electronics.
Data Acquisition Systems
The TMUX7208 is ideal for data acquisition systems where multiple analog sensors need to be sampled by a single ADC. Its low on-resistance (4Ω) and low charge injection (3pC) ensure accurate signal transfer with minimal distortion. The wide supply range (up to 44V) allows direct connection to industrial sensors without level shifting. The 1.8V logic compatibility simplifies interface with modern microcontrollers. In a typical system, the TMUX7208 connects eight sensor outputs to one ADC input, reducing component count and cost. The break-before-make switching prevents channel crosstalk, ensuring reliable measurements.
Recommended
Test and Measurement Equipment
In test and measurement equipment, the TMUX7208 routes multiple test points to a single measurement instrument. Its high voltage capability (up to 44V) allows direct switching of power rails and signals. The latch-up immunity ensures robustness against ESD and overvoltage events, which are common in test environments. The low charge injection minimizes glitches that could affect measurement accuracy. The device's 300mA current capability supports driving loads in automated test equipment. The 16-TSSOP package is compact, saving board space in dense test systems.
Recommended
Industrial Process Control
The TMUX7208 is well-suited for industrial process control systems that monitor multiple sensors such as temperature, pressure, and flow. Its wide supply range (4.5V to 44V) accommodates 24V industrial buses directly. The operating temperature range of -40°C to +125°C ensures reliable operation in harsh environments. The latch-up immunity protects against voltage transients from inductive loads. The 1.8V logic compatibility allows direct connection to low-power microcontrollers, reducing power consumption. The low on-resistance ensures minimal signal loss over long cable runs.
Recommended
Battery Monitoring Systems
In battery monitoring systems, the TMUX7208 multiplexes voltage and temperature sense lines from multiple battery cells to a single monitoring IC. Its high voltage rating (up to 44V) is essential for monitoring series-connected cells. The low charge injection prevents voltage spikes that could damage sensitive measurement circuits. The 1.8V logic compatibility allows direct interface with battery management ICs. The device's low on-resistance ensures accurate voltage measurements across the cell stack. The wide temperature range supports operation in automotive and industrial battery packs.
Recommended
Audio Signal Routing
The TMUX7208 can be used in audio equipment to route multiple audio sources to a single output. Its low charge injection (3pC) minimizes audible clicks and pops during switching. The low on-resistance (4Ω) ensures minimal signal attenuation. The wide supply range allows operation from ±15V rails commonly used in audio circuits. The break-before-make switching prevents shorting between channels, which could cause distortion. The device's high current capability (300mA) can drive headphone loads directly in some applications.
Recommended
Automotive Electronics
The TMUX7208 is suitable for automotive applications such as battery management, sensor multiplexing, and infotainment systems. Its wide supply range (up to 44V) handles automotive battery voltages (12V/24V). The operating temperature range of -40°C to +125°C meets automotive requirements. The latch-up immunity provides robustness against load-dump transients. The 1.8V logic compatibility allows direct connection to automotive microcontrollers. The device's low on-resistance ensures efficient signal routing in power-sensitive systems.
Recommended
Recommended Products Summary
Engineering reference data for TMUX7208 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TMUX7208PWR | TMUX7208M | TMUX7209PWR | ADG708 | MAX4781 |
|---|---|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP | 16-TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Maxim Integrated |
| Configuration | 8:1 Single | 8:1 Single | 8:1 Single | 4:1 Dual | 8:1 Single | 8:1 Single |
| On-Resistance (Typ) | 4 Ω | 4 Ω | 4 Ω | 4 Ω | 4.5 Ω | 1 Ω |
| Supply Voltage (Single) | 4.5V to 44V | 4.5V to 44V | 4.5V to 44V | 4.5V to 44V | 2.7V to 5.5V | 2.7V to 12V |
| Charge Injection | 3 pC | 3 pC | 3 pC | 3 pC | 5 pC | 5 pC |
| Latch-Up Immunity | Yes | Yes | Yes | Yes | No | No |
| Logic Compatibility | 1.8V | 1.8V | 1.8V | 1.8V | 2.7V | 2.7V |
Key Differentiators
- Latch-up immunity (vs ADG708)
- Wide supply voltage range (vs MAX4781)
- 1.8V logic compatibility (vs ADG708)
Design Notes
Ensure the supply voltages (VDD and VSS) are within the specified range (4.5V to 44V single, ±4.5V to ±22V dual). Use 0.1µF decoupling capacitors close to the VDD and VSS pins to filter high-frequency noise. For asymmetric supplies, ensure the total voltage difference does not exceed 44V.
Place the TMUX7208 close to the ADC or load to minimize trace length and parasitic capacitance. Use a solid ground plane under the device to reduce noise. For high-frequency signals, consider impedance-controlled traces and keep the address lines short to avoid crosstalk.
Do not exceed the absolute maximum ratings for input voltages. Ensure the address and enable pins are not left floating; tie them to known logic levels. When using dual supplies, ensure VSS is properly connected to the negative rail, not left unconnected. Verify the pinout against the datasheet before PCB layout.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified; for automotive, consider TMUX7208-Q1 if available.
