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Home > Products > Integrated Circuits (ICs) > Interface - Analog Switches, Multiplexers, Demultiplexers > MAX328EWE+T
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MAX328EWE+T

In Stock 6274 pcs Reference Price(In US Dollars)
1+
$15.4623
200+
$5.9842
500+
$5.7744
1000+
$5.6704
Manufacturer Part Number:
MAX328EWE+T
Manufacturer / Brand
Analog Devices Inc./Maxim Integrated
Part of Description:
IC MUX 8:1 3.5KOHM 16SOIC
Datasheets:
MAX328EWE+T(1).pdfMAX328EWE+T(2).pdfMAX328EWE+T(3).pdfMAX328EWE+T(4).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 6274 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number MAX328EWE+T
Manufacturer / Brand Analog Devices Inc./Maxim Integrated
Stock Quantity 6274 pcs Stock
Category Integrated Circuits (ICs) > Interface - Analog Switches, Multiplexers, Demultiplexers
Description IC MUX 8:1 3.5KOHM 16SOIC
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Supply, Single (V+) 10V ~ 30V
Voltage - Supply, Dual (V±) ±5V ~ 18V
Switch Time (Ton, Toff) (Max) 1.5µs, 1µs
Switch Circuit -
Supplier Device Package 16-SOIC
Series -
Package / Case 16-SOIC (0.295", 7.50mm Width)
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C (TA)
On-State Resistance (Max) 3.5kOhm
Number of Circuits 1
Multiplexer/Demultiplexer Circuit 8:1
Mounting Type Surface Mount
Current - Leakage (IS(off)) (Max) 10pA
Crosstalk -
Charge Injection 2pC
Channel-to-Channel Matching (ΔRon) 70Ohm
Channel Capacitance (CS(off), CD(off)) 1.8pF, 8pF
Base Product Number MAX328
-3db Bandwidth -

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

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Frequently Asked Questions

Can the MAX328EWE+T be used in a 5V logic system with a 12V supply, and what are the risks of voltage mismatch across its channels?
The MAX328EWE+T supports a single-supply voltage range of 10V to 30V, making it suitable for operation at 12V. However, if one side of the switch is driven by a 5V logic signal while the other connects to a 12V rail, internal protection diodes may conduct if the input exceeds V+ by more than the diode forward voltage. This can lead to excessive current draw and potential latch-up unless external clamping circuitry or series resistors are implemented to limit inrush current.
What happens if I exceed the maximum on-state resistance tolerance during high-current switching, and how does channel-to-channel matching affect signal integrity in precision analog applications?
While the typical on-state resistance is 3.5kΩ, variations up to ±70Ω (channel-to-channel mismatch) are possible. In high-precision analog routing, such mismatches can introduce gain errors or crosstalk, especially in low-impedance signal paths. Engineers should account for this when designing gain stages or differential networks where impedance balance is critical, and avoid using the MAX328EWE+T in precision instrumentation front-ends without additional calibration or buffering.
Is the MAX328EWE+T suitable for switching RF signals above 10MHz, given its lack of specified bandwidth?
Although the device has no defined -3dB bandwidth in the datasheet, its channel capacitance (CD(off) = 8pF) and charge injection (2pC) suggest limited suitability for RF paths above 10MHz. At higher frequencies, capacitive loading and charge transfer can distort small-signal waveforms. For RF switching under 1GHz, consider dedicated RF multiplexers instead. Use the MAX328EWE+T only for baseband or low-frequency analog signals where capacitive effects are manageable.
How do I ensure reliable switching in industrial environments with temperature cycling between -40°C and +85°C?
The MAX328EWE+T operates over -40°C to +85°C, but solder joint fatigue and package stress from thermal cycling can degrade long-term reliability. To mitigate risk, follow IPC guidelines for PCB layout with adequate thermal relief and use conformal coating if exposed to condensation. Avoid rapid power cycling that exacerbates coefficient-of-thermal-expansion mismatches. Monitor leakage current drift over time, as it may increase slightly at elevated temperatures due to semiconductor physics.
Can the MAX328EWE+T replace the older MAX328 in existing designs, and what design changes might be required?
Yes, the MAX328EWE+T is part of the same MAX328 family and shares the same pinout and electrical characteristics. It can directly replace legacy MAX328 parts in most applications. However, confirm that your system’s power sequencing tolerates the EWE variant’s input thresholds and that layout parasitics haven’t changed significantly due to package scaling. No major redesign is typically needed, but verify performance under worst-case conditions before migration.
What precautions should I take when configuring multiple MAX328EWE+T devices sharing a common control bus?
When driving multiple MAX328EWE+T select lines from a single microcontroller GPIO, ensure fan-out capability and avoid contention. The inputs have moderate input capacitance (~5pF each), so drive them with buffered logic or series termination if clocking exceeds 1MHz. Also, prevent back-driving by enabling only one output at a time during transitions to reduce shoot-through current through shared supply rails.
Does the MAX328EWE+T require external pull-ups or pull-downs on the data lines?
No external pull-ups or pull-downs are required for standard digital or analog switching. Each channel presents high impedance when off (IS(off) < 10pA), so floating inputs won’t load signals significantly. However, for undefined states during power-up, consider adding weak series resistors (e.g., 1kΩ) to suppress transient glitches caused by parasitic coupling, especially in noisy industrial settings.
How does charge injection impact ADC sampling when using the MAX328EWE+T as an analog multiplexer?
Charge injection of 2pC transfers charge from the control node into the selected channel upon switching. During fast ADC conversions, this can cause voltage droop at the input, leading to sampling error. To minimize impact, stagger switching timing relative to ADC acquisition phases and use hold capacitors larger than 50pF at the mux output. Alternatively, switch channels only after settling completes—this avoids introducing jitter in sensitive measurement systems.
What is the recommended decoupling strategy for stable operation of the MAX328EWE+T in automotive-grade environments?
Place a 0.1μF ceramic capacitor as close as possible to the V+ and GND pins of the MAX328EWE+T. For systems with high di/dt transients, add a bulk capacitor (1–10μF tantalum or ceramic) near the supply entry. Ensure low-inductance traces to minimize ground bounce. This helps stabilize the supply during simultaneous switching events and improves noise immunity against electromagnetic interference common in industrial and automotive applications.
Can the MAX328EWE+T safely switch bidirectional signals without damage?
Yes, the MAX328EWE+T supports bidirectional switching as long as all signals remain within the specified supply rails (up to ±18V for dual supply). There are no directionality restrictions in the architecture. However, ensure that during power-up or fault conditions, no input ever exceeds V+ + 0.3V or falls below GND – 0.3V to protect internal ESD structures. Use series resistors if hot-swapping is anticipated.

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MAX328EWE+T

MAX328EWE+T

Analog Devices Inc./Maxim Integrated

IC MUX 8:1 3.5KOHM 16SOIC

In Stock: 6274

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