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MAX4739EBE+T is listed in the Analog Switches, Multiplexers, Demultiplexers range at ChipApex. The manufacturer field lists Analog Devices Inc./Maxim Integrated. Its product description is IC SWITCH QUAD SPST 16UCSP. Review the specifications below when checking this part for your BOM.
The MAX4739EBE+T is a quad single-pole/single-throw (SPST) analog switch operating from a single +1.8V to +5.5V supply. It features four switches with two normally open and two normally closed terminals, designed for USB 1.1 and audio applications. The device guarantees an on-resistance of 4.5Ω maximum at +3V and 3Ω maximum at +5V, with 0.4Ω channel matching and 1.2Ω flatness. It offers low distortion of 0.03%, high off-isolation of -55dB at 10MHz, and break-before-make switching with a delay of 1ns maximum.
Verify the component authenticity by checking the top marking '4739' against the datasheet specifications. Confirm the package type matches the UCSP-16 footprint requirements for your PCB layout. Ensure the ordering suffix '+T' corresponds to the reel packaging format required for your assembly process.
Select this part when a combination of normally open and normally closed switches is required in a compact form factor. It is appropriate for designs needing low on-resistance and minimal signal distortion. Consider the UCSP-16 package constraints if space is limited compared to standard TSSOP or QFN options.
This component belongs to the MAX4737/MAX4738/MAX4739 family of low-voltage analog switches. While the MAX4737 provides four normally open switches and the MAX4738 provides four normally closed switches, the MAX4739 uniquely combines two of each type. All variants share identical electrical characteristics and pinouts except for the specific switch terminal configurations.
Direct functional substitutes include the MAX4737EUD, MAX4737ETE, MAX4738EUD, MAX4738ETE, MAX4739EUD, and MAX4739ETE. These parts offer the same electrical performance but differ in package type or switch configuration. Verify that the alternative package fits the existing board footprint or requires layout modification.
The MAX4739 features a guaranteed break-before-make time delay of 1ns maximum, which prevents short circuits during switching transitions.
The logic inputs accept up to +5.5V regardless of the supply voltage, allowing compatibility with different logic levels while the analog signals operate rail-to-rail.
At a +5V supply, the maximum on-resistance is specified as 3Ω, ensuring low insertion loss for the switched signals.
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