TMUX1574DYYR: Texas Instruments' Quad SPDT Analog Switch with Industry-Leading Performance

The TMUX1574DYYR from Texas Instruments represents the pinnacle of analog switching technology, combining ultra-low resistance, blazing-fast switching speeds, and exceptional signal integrity in a compact 16-pin SOT-23 package. As engineers demand higher performance from their interface components, this quad SPDT (Single Pole Double Throw) switch delivers unparalleled characteristics that make it the go-to solution for mission-critical applications across industries.

In-Depth Technical Specifications

Unmatched Electrical Performance

At the heart of the TMUX1574DYYR's superiority lies its 4.5 maximum on-resistance (typical 3.5 at 5V), which is 30% lower than competing solutions. This ultra-low R_ON is maintained across the entire 1.5V to 5.5V supply range, with a flatness of just 0.5 over the analog signal range. The switch achieves this while maintaining 70m channel-to-channel matching and <100nA leakage currents - critical for precision measurement systems.

Signal Integrity Engineering

With a -3dB bandwidth of 2GHz and insertion loss of only 0.5dB at 1GHz, the TMUX1574DYYR outperforms comparable switches in high-frequency applications. Its -90dB crosstalk at 100kHz and off-isolation of -50dB at 1MHz ensure clean signal separation, while the minimal 3.5pC charge injection prevents switching artifacts in sensitive analog circuits.

Robust Physical Characteristics

The device's 3mm 3mm SOT-23-16 package incorporates advanced thermal management, allowing operation across the -40 C to +125 C industrial temperature range. An ESD protection rating of 2kV HBM safeguards against electrostatic discharge events common in production environments.

Advanced Application Scenarios

5G Communication Systems

In mmWave front-end modules, the TMUX1574DYYR's 35ns switching speed and 2GHz bandwidth enable dynamic antenna tuning and signal path reconfiguration without introducing phase distortion. Its 3.5pF port capacitance minimizes loading effects on high-impedance RF circuits.

Automotive Sensor Networks

The switch's 125 C maximum rating and <1 A quiescent current make it ideal for battery-powered ADAS sensors. Four independent SPDT channels allow multiplexing of multiple sensor types (LiDAR, radar, ultrasonic) to shared processing resources.

Precision Test Equipment

With <0.1% R_ON flatness and < 0.5 variation over temperature, the device maintains measurement accuracy in automated test systems. The 100nA maximum leakage current ensures negligible error in high-impedance voltage measurement circuits.

Design Advantages Over Competitors

Compared to similar quad SPDT switches, the TMUX1574DYYR offers:

• 50% lower power consumption in battery-powered applications
• 3 faster switching than industry average
• 2 better crosstalk performance for sensitive signals
• The only quad SPDT with full 5.5V capability at 4.5 R_ON

Reference Design Implementation

A typical high-speed data acquisition system using the TMUX1574DYYR would:

1. Configure two channels as a 4:1 multiplexer for sensor inputs
2. Use remaining channels for calibration signal injection
3. Implement 0.1 F decoupling capacitors within 2mm of each V_DD pin
4. Route analog signals on inner layers with 50 impedance control

Purchasing & Support Resources

Texas Instruments provides comprehensive design support for the TMUX1574DYYR, including:

• SPICE simulation models for signal integrity analysis
• Evaluation module (EVM) with characterized performance data
• Reference designs for common applications
• Automotive-grade versions available (Q100 qualified)

For production quantities, the TMUX1574DYYR is available in tape-and-reel packaging (2500 units per reel) with standard 8-week lead times. Contact our authorized distributors for volume pricing and sample requests.