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Product Detailed Parameters
- Description：IC SWITCH 4PST-NOX2 17OHM 20QSOP
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：4PST - NO
- Multiplexer/Demultiplexer Circuit：-
- On-State Resistance (Max)：17Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：5V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：6.5ns, 6ns
- -3db Bandwidth：1.3GHz
- Charge Injection：1.5pC
- Channel Capacitance (CS(off), CD(off))：5pF
- Current - Leakage (IS(off)) (Max)：1nA
- Crosstalk：-70dB @ 5.5MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：20-QSOP
- Number of Circuits：2
- Grade：-
- Qualification：-
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Overview
The QS4A105QG8 is a dual 4-channel analog switch manufactured by Renesas Electronics Corporation, housed in a 20-lead QSOP package. It operates on a single 5V supply with a voltage range of 4.75V to 5.25V. The device features a maximum on-resistance of 17 ohms and a -3dB bandwidth of 1.3GHz. Switching times are characterized by a maximum turn-on time of 6.5ns and a maximum turn-off time of 6ns. It supports an operating temperature range from -40°C to +85°C.
Feature Summary
- Dual independent 4-channel multiplexer/demultiplexer configuration
- High-speed signal switching with low propagation delay
- TTL-compatible control inputs for direct logic interfacing
Applications
- Signal routing in data acquisition systems
- Audio and video signal switching applications
- Communication equipment channel selection
Procurement Notes
Verify component authenticity through authorized distributors or the manufacturer directly. Confirm RoHS compliance status and check for specific lot traceability requirements. Ensure the 20-QSOP package matches the design footprint. Validate that the lead-free finish meets assembly specifications. Review any recent product change notices regarding packaging or material composition updates.
Selection Notes
Select this component when a dual 4:1 mux/demux function is required within a compact surface-mount footprint. The 17-ohm on-resistance suits applications demanding moderate signal integrity at high frequencies. Verify that the 5V single-supply operation aligns with the system power architecture. Consider the 20-lead QSOP dimensions for PCB layout constraints compared to alternative packages.
Part Context
This part belongs to the QS4A105 series of analog switches. It serves as a functional replacement for legacy discrete switching solutions in compact designs. The device integrates multiple channels into a single IC to reduce board space. It is designed for general-purpose signal routing tasks requiring fast switching speeds.
Replacement Considerations
Check for pin-compatible alternatives if the QS4A105QG8 is unavailable. Verify that substitute parts maintain the same 17-ohm on-resistance and 1.3GHz bandwidth specifications. Ensure the replacement package matches the 20-QSOP form factor for direct board integration.
