MAX4620ESD+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4620ESD+ is a low-voltage, quad single-pole/single-throw (SPST) CMOS analog switch in a 14-pin SO package. It operates from a +2V to +12V single supply and features ±15kV ESD protection on NO/NC pins. The device offers a maximum on-resistance of 70Ω at +5V and 120Ω at +3V, with typical on-resistance matching of 0.5Ω at +5V. Off-leakage current is guaranteed at 0.5nA at +25°C. Dynamic characteristics include a turn-on time of up to 150ns and a -3dB bandwidth exceeding 300MHz. Total harmonic distortion is typically 0.015%.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Provides ±15kV electrostatic discharge protection on normally open and normally closed pins without latchup or damage.
• Pin-compatible replacement for industry-standard 74HC4066 analog switches.
• Handles rail-to-rail analog signals while consuming very low power.
• Controlled by TTL/CMOS input voltage levels for easy digital interfacing.

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered systems
• Audio and video signal routing
• Low-voltage data-acquisition systems
• Sample-and-hold circuits
• Communications circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the ordering suffix 'ESD' confirms the 14-pin Small Outline package type. Confirm the 'E' suffix indicates an industrial temperature range of -40°C to +85°C. Ensure the '+' suffix denotes compliance with current environmental standards. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a quad SPST configuration is required for low-voltage applications. It is suitable for replacing mechanical relays where board space is limited. Consider the 70Ω on-resistance limit for signal integrity requirements. Verify that the single-supply voltage range meets the system's power constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the MAX4620/MAX4630/MAX4640 family of CMOS analog switches. The MAX4620 variant specifically contains four normally open switches. Other family members include the MAX4630 with four normally closed switches and the MAX4640 with two normally open and two normally closed switches. All variants share similar electrical characteristics and pinouts.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet identifies the 74HC4066, MAX4066, MAX4610, MAX4611, and MAX4612 as pin-compatible replacements.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX4620 handle overvoltage events?

The device includes bidirectional SCRs on-chip between the NC/NO terminals. These SCRs turn on within nanoseconds if voltages go beyond-the-rails, bypassing surge current safely to ground.

What is the holding current requirement for the ESD protection?

Once the internal SCR latches due to an ESD strike, it remains on until the current falls below the holding current. Designers should limit connected source currents to no more than half the worst-case holding current (typically 70mA at +85°C) to ensure proper turn-off.

Is the MAX4620 compatible with standard logic levels?

Yes, each switch is independently controlled by TTL/CMOS-level-compatible digital inputs, allowing direct interfacing with standard logic controllers.