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Product Detailed Parameters
- Description：IC SWITCH 8PST X 1 5.4OHM 16WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SP8T
- Multiplexer/Demultiplexer Circuit：8:01
- On-State Resistance (Max)：5.4Ohm
- Channel-to-Channel Matching (ΔRon)：700mOhm
- Voltage - Supply, Single (V+)：4.5V ~ 44V
- Voltage - Supply, Dual (V±)：±4.5V ~ 22V
- Switch Time (Ton, Toff) (Max)：205ns, 270ns
- -3db Bandwidth：30MHz
- Charge Injection：3pC
- Channel Capacitance (CS(off), CD(off))：14pF, 130pF
- Current - Leakage (IS(off)) (Max)：70nA
- Crosstalk：-85dB @ 100kHz
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WQFN Exposed Pad
- Supplier Device Package：16-WQFN (4x4)
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The TMUX7208RUMR is a precision 8:1, single-channel multiplexer from Texas Instruments. It operates with a single supply voltage range of 4.5 V to 44 V or dual supplies ranging from ±4.5 V to ±22 V. The device features latch-up immunity and supports bidirectional analog and digital signals on source and drain pins. Key electrical parameters include a maximum on-resistance of 5.9 Ω at 25°C and a typical charge injection of 3 pC. It utilizes 1.8V logic compatible inputs with integrated pull-down resistors. The component is housed in a 16-pin WQFN package and functions within an operating temperature range of -40°C to +125°C.
Feature Summary
- Latch-up immune design prevents high current events caused by overvoltage conditions.
- Supports rail-to-rail operation for bidirectional signal paths across the full supply range.
- Features break-before-make switching logic to prevent signal path shorting during transitions.
Applications
- Factory automation and control systems
- Programmable logic controllers (PLC)
- Analog input modules
- Semiconductor test equipment
- Data acquisition systems (DAQ)
Procurement Notes
Verify the specific ordering suffix RUMR corresponds to the WQFN-16 package configuration required for your PCB layout. Confirm that the logic level requirements align with your system's 1.8V compatible inputs. Ensure power supply rails remain within the specified 4.5 V to 44 V differential limits to maintain device reliability and latch-up immunity performance.
Selection Notes
Select this component when a single channel requires routing one of eight distinct sources to a common drain. The low on-resistance and charge injection make it suitable for high-precision measurement applications. Consider the thermal dissipation characteristics of the WQFN package if operating near the upper temperature limits or continuous current thresholds.
Part Context
This part belongs to the TMUX720x family of precision multiplexers designed for harsh industrial environments. The family includes the TMUX7209, which offers a 4:1, two-channel configuration in the same package footprint. Both devices share similar electrical characteristics, including latch-up immunity and wide supply voltage support, allowing for flexible design scaling within the same product line.
Replacement Considerations
The TMUX7209 serves as a functional alternative within the same family, offering a 4:1, two-channel configuration instead of an 8:1, single-channel setup. Both components utilize the WQFN-16 package and share identical pinouts and electrical specifications regarding supply voltage and latch-up immunity.
