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Product Detailed Parameters
- Description：IC SWITCH SPDTX4 4.5OHM 16SOT23
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SPDT
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：4.5Ohm
- Channel-to-Channel Matching (ΔRon)：70mOhm
- Voltage - Supply, Single (V+)：1.5V ~ 5.5V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：35µs, 95ns
- -3db Bandwidth：2GHz
- Charge Injection：3.5pC
- Channel Capacitance (CS(off), CD(off))：3.5pF, 3.5pF
- Current - Leakage (IS(off)) (Max)：100nA
- Crosstalk：-90dB @ 100kHz
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-16 Thin, SOT-23 Variant
- Supplier Device Package：16-SOT-23-THIN
- Number of Circuits：4
- Grade：-
- Qualification：-
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Overview
The TMUX1574DYYR is a Texas Instruments analog switch IC featuring four independent single-pole double-throw (SPDT) channels. It operates within a supply voltage range of 1.5 V to 5.5 V and supports powered-off protection up to 5.5 V. The device utilizes a 16-pin DYYR package, which corresponds to a 2.6x1.8 mm UQFN footprint. Key electrical specifications include a maximum on-resistance of 2 Ohms, a typical channel-to-channel matching of 70 mOhm, and a maximum charge injection of 3.5 pC. Switching performance is characterized by a maximum turn-on time of 12 µs and a maximum turn-off time of 50 µs. The component functions reliably across an extended industrial temperature range from -40°C to +125°C.
Feature Summary
- Four independent SPDT analog switches with low on-resistance for signal routing
- Powered-off protection capability allowing input signals up to the supply rail when power is off
- High channel-to-channel matching ensures consistent performance across all four channels
- Compact surface-mount packaging designed for space-constrained applications
Applications
- Portable instrumentation signal conditioning
- Automotive infotainment systems
- Industrial process control data acquisition
Procurement Notes
Verify the specific suffix DYYR to confirm the tape-and-reel packaging format and pin configuration. Ensure the procurement documentation explicitly states the 16-UQFN package dimensions. Confirm RoHS compliance status through the manufacturer's official environmental declaration. Cross-reference the part number against the latest datasheet revision to validate parameter consistency before finalizing orders.
Selection Notes
Select this component when low on-resistance and high channel matching are critical for signal integrity. The wide supply voltage range accommodates various logic levels without level shifting. Consider the thermal dissipation capabilities relative to the small package size in high-current scenarios. Verify that the switching speed requirements align with the specified turn-on and turn-off times for the target application bandwidth.
Part Context
This part belongs to the TMUX1574 family of CMOS analog switches. It shares functional similarities with other members like the TMUX1574RSVR but differs in package type. The DYYR suffix specifically denotes the UQFN variant. This family is designed for general-purpose multiplexing where precision and low distortion are required. It complements higher-voltage options like the TMUX5411 for different system voltage domains.
Replacement Considerations
The TMUX1574RSVR serves as a direct functional substitute with identical electrical characteristics but utilizes a different UQFN pinout or marking scheme. Verify pin compatibility during board layout replacement. Other family members may offer different channel counts or voltage ratings.
