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Product Detailed Parameters
- Description：IC SWITCH SPDT X 8 8OHM 42TQFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Switch Circuit：SPDT
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：8Ohm
- Channel-to-Channel Matching (ΔRon)：500mOhm
- Voltage - Supply, Single (V+)：1.65V ~ 3.6V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：9ns, 8.5ns
- -3db Bandwidth：1.3GHz
- Charge Injection：-
- Channel Capacitance (CS(off), CD(off))：4pF
- Current - Leakage (IS(off)) (Max)：-
- Crosstalk：-30dB @ 300MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：42-TQFN
- Supplier Device Package：42-TQFN-EP (3.5x9)
- Number of Circuits：8
- Grade：-
- Qualification：-
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Overview
The STMUX3040QTTR is an octal single-pole double-throw (SPDT) analog switch manufactured by STMicroelectronics. It integrates eight independent switching channels within a compact 42-pin TQFN-EP package, measuring 3.5x9 mm. The device features a maximum on-resistance of 8 Ohms and supports a -3dB bandwidth of 1.3 GHz. Channel-to-channel matching is specified at 500 mOhm, with isolation reaching -30 dB at 300 MHz. This component is designed for high-speed signal routing applications requiring precise signal integrity and low distortion in multi-channel systems.
Feature Summary
- Integrates eight independent SPDT switching channels for efficient signal routing
- Provides high-frequency performance with a 1.3 GHz -3dB bandwidth
- Ensures signal consistency through tight channel-to-channel matching of 500 mOhm
- Delivers reliable isolation characteristics suitable for sensitive analog applications
Applications
- High-speed data acquisition systems requiring multi-channel signal selection
- Test and measurement equipment utilizing precision analog signal routing
- Industrial automation controllers managing multiple sensor inputs
- Communication infrastructure devices handling RF signal distribution
Procurement Notes
Verify the specific ordering suffix QTTR to confirm tape-and-reel packaging configuration. Ensure compatibility with the 42-TQFN-EP thermal pad requirements for proper heat dissipation. Cross-reference the RoHS compliance status with current environmental directives. Confirm that the 8 Ohm on-resistance specification aligns with your circuit's power loss constraints. Validate the operating voltage range against your system's supply rails before integration.
Selection Notes
Select this component when designing circuits requiring eight simultaneous SPDT switches in a minimal footprint. Consider the 8 Ohm on-resistance impact on signal attenuation for low-voltage applications. Evaluate the 1.3 GHz bandwidth against your highest frequency signal components. Assess the thermal performance needs given the EP package type. Compare channel matching requirements against other multiplexers if high precision across all channels is critical for your specific application.
Part Context
This part belongs to STMicroelectronics' analog switch portfolio, specifically designed for multiplexing and demultiplexing tasks. It complements other ST analog switches by offering higher channel density in a surface-mount format. The TQFN-EP package provides enhanced thermal conductivity compared to standard QFN variants. It serves as a solution for space-constrained designs needing multiple signal paths without compromising speed or isolation.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical specifications carefully when considering alternative manufacturers. Check if competing parts offer similar channel counts and bandwidth requirements. Ensure that any replacement maintains the required isolation levels and on-resistance values for your specific design constraints.
