MAX4655ETA+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4655ETA+T is a single-pole/single-throw (SPST) CMOS analog switch manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of ±4.5V to ±20V for dual supplies or +9V to +40V for single supplies, supporting a maximum differential voltage of 40V. The device features a maximum on-resistance of 10Ω at ±15V supplies and handles up to 300mA continuous current with a 400mA peak capability. Key electrical parameters include a turn-on time of 200ns maximum, turn-off time of 100ns maximum, off-leakage current of 1nA maximum, and a -3dB bandwidth of 210MHz. It is housed in an 8-pin TDFN package with an exposed paddle.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• High-current handling capability designed to replace electromechanical relays with significantly faster switching speeds and extended operational life.
• Rail-to-rail signal handling allows the switch to conduct equally well in either direction across the full power-supply range.
• TTL/CMOS compatible digital control input simplifies interface logic requirements without requiring additional level shifting.

Analog Switches, Multiplexers, Demultiplexers Applications

• Relay replacement in systems requiring high speed and long lifetime cycles
• Test equipment signal routing and measurement paths
• Communication systems including xDSL modems and PBX/PABX networks
• Audio signal routing and multimedia board applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the specific ordering suffix matches the required package type and temperature range. Ensure that the exposed paddle connection aligns with the design's thermal and electrical grounding requirements. Cross-reference the datasheet revision to confirm all electrical characteristics remain consistent with the intended application specifications.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when high continuous current switching is required alongside low on-resistance. The SPST normally closed configuration distinguishes it from the normally open MAX4656 variant. Consider the TDFN package's thermal dissipation capabilities for high-power applications. Verify that the supply voltage range accommodates the system's rail-to-rail signal requirements without exceeding absolute maximum ratings.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4655ETA+T belongs to the MAX4655–MAX4658 family of medium-voltage CMOS analog switches. This series is engineered for applications demanding high current handling and low on-resistance. The MAX4655 specifically denotes the normally closed (NC) configuration within this group, differing from the normally open MAX4656. All variants share similar electrical performance but vary in default switch state and package power dissipation ratings.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4655 is pin-compatible with the DG417. Designers replacing legacy components should verify that the substitute supports the required 300mA continuous current and 10Ω on-resistance specifications. Ensure the replacement device accommodates the same ±4.5V to ±20V dual supply or +9V to +40V single supply operating ranges.