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Product Detailed Parameters
- Description：IC SWITCH SPDTX2 700MOHM 10TDFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Switch Circuit：SPDT
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：700mOhm
- Channel-to-Channel Matching (ΔRon)：600mOhm
- Voltage - Supply, Single (V+)：1.65V ~ 4.3V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：50ns, 30ns
- -3db Bandwidth：85MHz
- Charge Injection：44pC
- Channel Capacitance (CS(off), CD(off))：7pF
- Current - Leakage (IS(off)) (Max)：10nA
- Crosstalk：-76dB @ 100kHz
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：10-UFDFN
- Supplier Device Package：10-TDFN (2.5x1.4)
- Number of Circuits：2
- Grade：-
- Qualification：-
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Overview
The STG3689DTR is a dual Single Pole Double Throw (SPDT) analog switch fabricated in CMOS technology. It operates on a single supply voltage ranging from 0.9 V to 4.5 V, enabling compatibility with low-voltage digital systems. The device features a break-before-make switching action to prevent signal shorting during channel transitions. Key electrical parameters include an on-resistance of typically 1.2 ohms and a maximum of 2.5 ohms. Switching times are specified at 15 ns for turn-on and 15 ns for turn-off. The component supports a continuous current of 125 mA and dissipates up to 500 mW of power.
Feature Summary
- Break-before-make switching action prevents signal overlap between channels
- Ultra-low voltage operation starting at 0.9 V for portable applications
- High-speed CMOS architecture ensures fast signal routing
- Low on-resistance minimizes signal attenuation
Applications
- Signal routing in mobile phones and handheld devices
- Multiplexing in data acquisition systems
- Audio and video signal switching
- Battery-powered instrumentation
Procurement Notes
Verify the specific suffix 'DTR' corresponds to the tape-and-reel packaging format required for automated assembly. Confirm that the 0.9 V minimum supply voltage aligns with the target system's power rails. Ensure the break-before-make timing characteristics meet the strict requirements of the application to avoid transient glitches. Cross-reference the pinout configuration with the official datasheet to prevent layout errors during PCB design.
Selection Notes
Select this component when ultra-low voltage operation below 1.8 V is mandatory. The break-before-make feature is critical for applications requiring isolation between output channels during switching events. Compare the on-resistance specifications against other SPDT switches if signal integrity at high frequencies is a primary concern. Consider the package size and thermal dissipation capabilities relative to the available board space and ambient operating conditions.
Part Context
This part belongs to the STG368x series of low-voltage analog switches from STMicroelectronics. It complements higher-voltage variants like the STG3680 by offering functionality in sub-1V environments. The series is designed for portable electronics where power efficiency and small form factors are essential constraints.
Replacement Considerations
The STG3689QTR is a qualified automotive-grade alternative within the same family. Verify functional equivalence regarding the break-before-make timing and on-resistance before substitution.
