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Analog Devices Inc./Maxim Integrated MAX354EWE+
- Part No.:
- MAX354EWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX354EWE+.pdf
- Description:
- IC MUX 8:1 350OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:392
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Product details
Overview
MAX354EWE+ from Maxim Integrated is a fault-protected single 8-channel analog multiplexer designed for high-reliability signal routing in industrial and avionics systems. It operates from ±4.5V to ±18V dual supplies (or +4.5V to +36V single supply), features 350Ω max on-resistance, <0.5nA input leakage at +25°C, and guarantees break-before-make switching. It protects against ±40V overvoltage with power off and clamps outputs to within 1.5V of supply rails during faults.
For engineers reviewing the MAX354EWE+ datasheet, MAX354EWE+ pinout, MAX354EWE+ application, or MAX354EWE+ equivalent, key selection considerations include fault tolerance under supply loss, leakage-critical precision signal routing, ±40V continuous overvoltage immunity, and compatibility with TTL/CMOS logic without pull-ups.
Technical Context
The MAX354EWE+ employs a series N-channel/P-channel/N-channel FET structure that actively limits fault current to sub-microamp levels when analog inputs exceed supply rails - even with V+ and V- unpowered. Its digital interface uses fixed 0.8V/2.4V logic thresholds referenced to GND, ensuring robust TTL/CMOS compatibility across ±4.5V to ±18V supply ranges.
During overvoltage events, the device maintains polarity integrity and avoids glitches by dynamically increasing on-resistance above ±13.5V (with ±15V supplies), limiting output swing to approximately –12V to +13.5V while clamping outputs 1.5V below V+ and 1.5V above V–. Charge injection is characterized at 15–180pC depending on supply and analog voltage, with 100ns guaranteed break-before-make interval.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4.5V to ±18V dual or +4.5V to +36V single - supports wide industrial rail flexibility and asymmetrical operation (e.g., +15V/–5V) |
| On-Resistance (RON) | 350Ω max - enables low-gain error in precision sensor/metering paths with ≤10kΩ source impedance |
| Input Leakage (25°C) | <0.5nA - preserves accuracy in high-impedance pH, thermocouple, or strain gauge front-ends |
| Fault Tolerance | ±40V continuous with supplies off - eliminates need for external TVS or series resistors in field-connected I/O |
| Logic Thresholds | 0.8V low / 2.4V high - ensures direct interface to 3.3V/5V microcontrollers without level shifters or pull-ups |
| Break-Before-Make | 100ns min - prevents momentary channel-to-channel shorting in redundant signal selection |
| Charge Injection | 15pC (±15V, –10V input) to 180pC (±15V, +10V input) - defines settling time impact on 12-bit+ SAR ADC sampling |
Pinout & Package
MAX354EWE+ is housed in a 16-pin Wide SO (SOIC-W) package, 7.5mm body width, 1.27mm pitch, RoHS-compliant, with thermal pad option not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A2, A0 | Channel address inputs - A2 enables 8-channel decode (A2/A1/A0); A0 least-significant bit |
| 2 | A1 | Channel address input - middle bit for 3-bit binary decoding of NO1–NO8 to COM |
| 3 | V− | Negative supply rail - connect to GND for single-supply operation; sets lower analog swing limit |
| 4–7 | NO1–NO4 | Analog input/output terminals - bidirectional, interchangeable with NO5–NO8 and COM |
| 8 | COM | Common analog terminal - routed to selected NOx channel; used as input (mux) or output (demux) |
| 9–12 | NO5–NO8 | Analog input/output terminals - identical electrical specs and routing capability as NO1–NO4 |
| 13 | GND | Circuit ground reference - provides logic threshold reference and shields analog/digital coupling |
| 14 | V+ | Positive supply rail - sets upper analog swing limit; powers internal protection FET gates |
| 15 | EN | Enable control input - high = active; low = all switches open; TTL/CMOS compatible, no pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Fault protection with supplies off | Withstands ±40V continuous input regardless of V+/V− state - eliminates system-level power sequencing constraints |
| Output clamping during fault | Clamps COM/NOx to within 1.5V of V+ or V− rails - prevents downstream op-amp saturation or ADC overrange |
| No power-up sequencing required | Operates safely with arbitrary V+/V−/GND/EN power application order - simplifies power domain partitioning |
| All switches off with supplies off | Zero conduction path between any NOx and COM when V+/V− = 0 - prevents backfeeding or signal leakage |
| TTL/CMOS logic compatibility | 0.8V/2.4V thresholds independent of supply voltage - interoperable with 3.3V FPGA I/O and 5V microcontrollers |
Applications
| Industrial Process Monitoring | Avionics Sensor Multiplexing |
|---|---|
Use Scenario: Routing thermocouple, RTD, and pressure transducer signals from 8 field sensors into a single high-accuracy ADC in a PLC rack. IC Role / Device Role / Timing Role: Fault-protected analog switch enabling safe hot-swap of sensor modules and surviving 40V transients on unshielded factory wiring. Use Value: Eliminates need for discrete overvoltage protection per channel, reducing BOM count by 8× TVS diodes and associated PCB area. |
Use Scenario: Selecting among 8 redundant air data computer (ADC) inputs in flight control systems where EMI-induced transients exceed ±30V. IC Role / Device Role / Timing Role: High-integrity signal router maintaining signal continuity during lightning-induced surges and ensuring no polarity reversal on fault entry/exit. Use Value: Meets DO-160 Section 22 Level 3 surge immunity without external clamping, supporting certification evidence for safety-critical functions. |
| ATE Signal Path Switching | Redundant Power Supply Monitoring |
Use Scenario: Configuring stimulus/response paths between DUT pins and SMU channels in automated test equipment with mixed ±15V/±5V subsystems. IC Role / Device Role / Timing Role: Precision analog mux with matched RON and low charge injection enabling accurate 16-bit DC parametric measurements. Use Value: Achieves <0.01% gain error across full temperature range due to 15Ω RON matching and <0.5nA leakage at +85°C. |
Use Scenario: Continuously monitoring voltage outputs from 8 independent backup DC-DC converters feeding critical avionics loads. IC Role / Device Role / Timing Role: Fail-safe monitor switch that remains open during converter failure or reverse-polarity connection, preventing fault propagation. Use Value: Guarantees isolation >100dB at 100kHz and blocks >99.9% of fault current (<5nA) even when one converter shorts to chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fault-protected analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG508F | Pin-compatible but lacks ±40V fault tolerance with supplies off; max fault rating ±20V only with power applied. | Suitable for board-level protected environments but not field-wire interfaces. | Select ADG508F only if overvoltage exposure is limited to powered operation and ≤±20V. |
| MAX358 | Same fault architecture and ±40V rating, but dual 4-channel (MAX355 form factor); not pin-compatible with MAX354EWE+. | Requires PCB redesign; offers channel redundancy but no 8:1 single-package solution. | Choose MAX358 when dual independent 4-channel routing is preferred over compact 8:1 topology. |
Compared with ADG508F and MAX358, the MAX354EWE+ uniquely delivers 8:1 routing in a single wide-SO package with guaranteed ±40V fault survival regardless of supply state - making it the only option for space-constrained, field-connected systems requiring zero-power fault immunity.
Availability
MAX354EWE+ is available at Aetrix Electronics and suitable for industrial process control, avionics sensor conditioning, and ATE signal routing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX354EWE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX354EWE+ belongs to Maxim's fault-protected analog switch family, engineered specifically for signal integrity preservation in harsh environments where overvoltage, hot-swap, and power-loss conditions are routine operational requirements.
FAQ
What is the maximum continuous overvoltage the MAX354EWE+ can withstand with power supplies disconnected?
The MAX354EWE+ withstands ±40V continuous analog overvoltage on any NOx or COM pin with V+ and V− unpowered. This is achieved via its series N/P/N FET structure, which forces sub-microamp leakage and infinite on-resistance under fault - verified per Absolute Maximum Ratings and Typical Operating Characteristics Figure 8–9. This capability is intrinsic to the MAX354EWE+ silicon design and requires no external components.
Does the MAX354EWE+ require external pull-up resistors on its digital control pins?
No, the MAX354EWE+ does not require external pull-up resistors on A0, A1, A2, or EN. Its digital inputs have guaranteed 0.8V low and 2.4V high thresholds referenced to GND, ensuring direct compatibility with standard TTL and CMOS logic outputs across its full operating temperature range (–40°C to +85°C). Input leakage remains below 1µA, eliminating current-driven bias requirements.
Can the MAX354EWE+ be used in single-supply configurations, and what is the minimum positive supply voltage?
Yes, the MAX354EWE+ supports single-supply operation from +4.5V to +36V. Connect V− to GND, and ensure the analog signal range stays within 1.5V of the rails (e.g., 0V to V+ – 1.5V). At +4.5V supply, output swing is limited to approximately +3.5V to –2V relative to GND, and RON increases slightly versus ±15V operation - both confirmed in Electrical Characteristics and Typical Operating Characteristics sections of the MAX354EWE+ datasheet.
How does the MAX354EWE+ behave during a fault condition - does it invert signal polarity or generate glitches?
The MAX354EWE+ maintains correct signal polarity and produces no glitches during fault entry or recovery. When analog voltage exceeds V+ – 1.5V or falls below V− + 1.5V, its internal FETs progressively increase on-resistance to limit current and clamp the output - without polarity reversal, latch-up, or transient spikes. This behavior is validated in Detailed Description Figures 8–11 and confirmed by "no glitches or polarity reversals" statement in the MAX354EWE+ datasheet.
Is the MAX354EWE+ pin-compatible with the MAX354CWE or MAX354EPE variants?
Yes, the MAX354EWE+ is pin-compatible with MAX354CWE (0°C to +70°C) and MAX354EPE (–40°C to +85°C, PDIP) variants. All share identical 16-pin SOIC-W (MAX354EWE+) / PDIP (MAX354EPE) footprints and identical pin functions per Pin Description table. The only differences are temperature grade and package type - the MAX354EWE+ uses wide SO for improved thermal performance and board-space efficiency in industrial layouts.
MAX354EWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 350Ohm
- Channel-to-Channel Matching (ΔRon):
- 7Ohm
- Voltage - Supply, Single (V+):
- 4.5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 250ns, 200ns
- -3db Bandwidth:
- -
- Charge Injection:
- 80pC
- Channel Capacitance (CS(off), CD(off)):
- 1.6pF, 11pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX354EWE+ FAQ
1.How can I place an order for MAX354EWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX354EWE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX354EWE+ reliable?
The price and inventory of MAX354EWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX354EWE+ is usually 5 days.
3.What payment methods are accepted for MAX354EWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX354EWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX354EWE+?
MAX354EWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX354EWE+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX354EWE+?
For technical support, including MAX354EWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX354EWE+ requirements.
6.How does Aetrix verify that MAX354EWE+ is sourced from the original manufacturer or authorized distributors?
All MAX354EWE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX354EWE+ meets industry standards.
7.What is the process for return or replacement of MAX354EWE+?
All MAX354EWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX354EWE+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX354EWE+ part is unused and in its original packaging.
Return procedure for MAX354EWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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