MAX4640ESD+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4640ESD+T is a quad single-pole/single-throw (SPST) CMOS analog switch featuring ±15kV ESD protection on NO and NC pins. It operates from a +2V to +12V single supply with a maximum on-resistance of 70Ω at 5V and 120Ω at 3V. The device includes two normally open and two normally closed switches, offering break-before-make switching with a typical delay of 5ns. Key electrical parameters include a -3dB bandwidth exceeding 300MHz, off-isolation of -90dB at 1MHz, and total harmonic distortion of 0.015%. It consumes only 10µA of positive supply current.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrated ±15kV ESD protection on signal terminals using bidirectional SCRs
• Pin-compatible replacement for industry-standard 74HC4066 devices
• Rail-to-Rail signal handling capability with low power consumption
• Guaranteed on-resistance matching between channels for precision applications

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered systems requiring low voltage operation
• Audio and video signal routing circuits
• Low-voltage data-acquisition systems
• Sample-and-hold circuits
• Relay replacement in automated test equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity by checking the manufacturer's marking against official datasheet specifications. Confirm the package type matches the required PCB footprint, as the MAX4640 series is available in TSSOP, SO, and DIP packages. Ensure the ordering suffix corresponds to the desired temperature range and packaging format before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX4640ESD+T when a mix of normally open and normally closed switches is required within a single package. This model provides two NO and two NC channels, unlike the MAX4620 which offers four NO switches. Consider the 70Ω on-resistance limit at 5V supply and the 300MHz bandwidth for high-frequency signal integrity requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4640 belongs to the MAX4620/MAX4630/MAX4640 family of low-voltage, high-ESD-protected analog switches. These devices are designed as pin-compatible replacements for standard logic-level switches. The MAX4640 specifically differentiates itself by providing a mixed configuration of two normally open and two normally closed SPST switches, suitable for complex signal routing topologies.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4640 is a direct pin-compatible replacement for the 74HC4066, MAX4066, MAX4610, MAX4611, and MAX4612. When substituting, verify that the application can tolerate the specific break-before-make timing characteristics unique to the MAX4640 architecture.