Analog Devices MAX4634ETB+T — Circuit Protection
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RoHS Compliant · Lead-Free EIA-481 Standard
Analog Devices / Circuit Protection

MAX4634ETB+T Analog Switch SP4T, 4Ohm, 10-TDFN

MPN MAX4634ETB+T
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Maxim Integrated MAX4634ETB+T, SP4T analog switch / 4:1 multiplexer, single 1.8V-5.5V supply, 4Ohm max on-resistance, 18ns/11ns switching, -78dB crosstalk @ 1MHz, industrial -40°C to 85°C, 10-TDFN-EP (3x3mm) package.

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MOQ: 1 pcs
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[SPEC] Essential Parameters Snapshot Full Specifications (15)
Package / Case 10-WFDFN Exposed Pad
Supply Voltage 1.8V ~ 5.5V

Full Technical Specifications

15 Parameters
MAX4634ETB+T specifications
Parameter / AttributeSpecification / Value
MountingSurface Mount
Voltage - supply, single (V+)1.8V ~ 5.5V
Current - leakage (IS(off))100pA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Crosstalk-78dB @ 1MHz
Case10-WFDFN Exposed Pad
Switch circuitSP4T
Charge injection2pC
Number of circuits1
On-State resistance4Ohm
Switch time (Ton, toff)18ns, 11ns
Multiplexer (Demultiplexer circuit)4:1
Channel capacitance (CS(off), CD(off))13pF, 52pF
Channel-to-Channel matching (ΔRon)100mOhm
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Technical Details & Description

The switch comes in a 10-lead TDFN package with an exposed pad (3x3mm body). Reel and cut-tape options are available for prototyping or production volume.

Channel matching and capacitance

Channel-to-channel on-resistance matching is 100mOhm maximum, which means the four channels present nearly identical resistance to the signal — useful when gain accuracy or attenuation matching matters across channels. Off-channel capacitance is 13pF on the source side and 52pF on the drain side; this capacitance forms a low-pass filter with source impedance, so the designer should account for it in the bandwidth budget.

Frequently asked questions

What is the on-resistance of MAX4634ETB+T?

Maximum on-resistance is 4Ohm across the rated supply and temperature range.

Is MAX4634ETB+T lead-free?

Yes, it is ROHS3 compliant, which includes lead-free requirements.

What are alternatives to MAX4634ETB+T?

Pin-compatible alternatives exist within the same Maxim SP4T switch family, such as the MAX4634EUB+ in a 10-uMAX package, but the TDFN package differs. For a direct drop-in replacement, verify the package and pinout against your layout.

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