MAX4545EAP+

Analog Switches - Special Purpose Overview

The MAX4545EAP+ is a quad, low-voltage, bidirectional RF/video switch designed for 50Ω and 75Ω systems. It contains four normally open single-pole/single-throw (SPST) switches with a T-switch configuration. The device operates on dual supplies from ±2.7V to ±6V or a single supply from +2.7V to +12V. Key electrical parameters include a maximum on-resistance of 20Ω at ±5V, a signal-path matching of 1Ω max, and flatness of 0.5Ω max. It provides -80dB off isolation and crosstalk at 10MHz, with a -3dB bandwidth of 300MHz. Logic inputs are TTL/CMOS compatible.

Analog Switches - Special Purpose Feature Summary

• T-switch architecture ensures high-frequency off isolation and low crosstalk
• Rail-to-rail analog signal handling capability in either direction
• Low insertion loss suitable for RF and video applications
• TTL and CMOS logic input compatibility

Analog Switches - Special Purpose Applications

• RF switching
• Video signal routing
• High-speed data acquisition
• Test equipment
• ATE equipment

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix 'EAP+' against the manufacturer's current datasheet to confirm the package type, temperature range, and lead-free status. Ensure the ordering code matches the exact pin count and footprint required for the target PCB design before finalizing procurement.

Analog Switches - Special Purpose Selection Notes

Select this component when designing circuits requiring bidirectional switching for RF or video signals up to 300MHz. Verify that the system impedance aligns with the 50Ω or 75Ω optimization. Confirm that the available power supply rails fall within the specified operating range to maintain the guaranteed on-resistance and isolation performance.

Analog Switches - Special Purpose Part Context

This part belongs to the MAX4545/MAX4546/MAX4547 family of low-voltage CMOS analog switches. While the MAX4546 offers dual SPST configurations and the MAX4547 provides two SPDT switches, the MAX4545 specifically integrates four independent SPST switches. All members share the same T-switch topology and core electrical characteristics.

Analog Switches - Special Purpose Replacement Considerations

Direct functional replacements within the same family include the MAX4546 and MAX4547, provided the channel configuration (SPST vs SPDT) meets the circuit requirements. Other generic CMOS analog switches may be considered if the strict 300MHz bandwidth and -80dB isolation specifications can be relaxed.