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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:3,754
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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, this page delivers verified electrical specs, fault-protection behavior under overvoltage, thermal leakage performance up to +85°C, and pin-compatible alternatives for rugged analog signal routing in data-acquisition and redundant systems.
Technical Context
The MAX354EWE implements 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-whether power is on or off. Its digital logic thresholds (0.8V/2.4V) ensure TTL/CMOS compatibility without pull-ups, and its enable-controlled channel selection supports demultiplexing with full fault protection.
During overvoltage events, the device's output clamps at ~1.5V below V+ and ~3V above V−, preserving polarity and preventing glitches. On-resistance matching between channels is ≤15Ω (typ), and charge injection is as low as 15pC at ±15V supplies with −10V input-critical for precision sampling applications.
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 configurations without level-shifting. |
| On-Resistance (RON) | 350Ω max-ensures minimal signal attenuation and gain error in precision analog paths. |
| Input Leakage Current | <0.5nA at +25°C, <5nA at +85°C-reduces offset drift and loading in high-impedance sensor interfaces. |
| Fault Protection | ±40V continuous overvoltage tolerance with supplies off-enables hot-swap and undervoltage-safe operation. |
| Break-Before-Make Interval | 50ns min-prevents momentary shorting between analog inputs during channel switching. |
| Logic Compatibility | 0.8V/2.4V thresholds-direct interface with TTL and CMOS without external biasing or resistors. |
| Charge Injection | 15pC typ at ±15V, −10V input-limits settling error in sample-and-hold and ADC front-end designs. |
Pinout & Package
MAX354EWE is housed in a 16-pin Wide SO (SOIC-W) package with 0.3-inch body width and standard 1.27mm pitch. Pin assignments are fully compatible with industry-standard 16-pin SO footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A2 | Binary address inputs selecting one of eight channels (A2 active only in MAX354); no internal pull-up/down. |
| 2 | EN | Active-high enable controlling all switches; disables all channels when low, reducing leakage and power. |
| 3 | V− | Negative supply rail; tied to GND for single-supply operation (+4.5V to +36V). |
| 4–7 | NO1–NO4 | Bidirectional analog inputs/outputs; electrically identical and interchangeable with NO5–NO8. |
| 8 | COM | Common analog terminal-serves as input (mux mode) or output (demux mode) with full fault protection. |
| 9–12 | NO5–NO8 | Bidirectional analog inputs/outputs; share same RON, leakage, and fault-clamp characteristics as NO1–NO4. |
| 13 | GND | Analog/digital reference ground-forms isolation barrier between logic and analog sections. |
| 14 | V+ | Positive supply rail; substrate tied internally to V+, requiring clean, low-impedance connection. |
| 15 | A1 | Binary address input completing 3-bit decode (A2/A1/A0) for 8-channel selection. |
Key Features
| Feature | Design Value |
|---|---|
| Fault-clamped output | Clamps to V+ −1.5V / V− +3V during overvoltage-preserves downstream circuit integrity without external diodes. |
| No power-up sequencing | Operates safely across all supply ramp rates-eliminates need for controlled POR timing in multi-rail systems. |
| All-switches-off with supplies off | Zero current path between NOx and COM when V+/V− = 0V-prevents backfeeding and signal corruption. |
| Demultiplexing support | Full bidirectional operation with guaranteed break-before-make-enables single-chip signal distribution in backup systems. |
| Low digital feedthrough | >100dB isolation between logic and analog sections-achieved via internal ground-plane shielding, not layout-dependent. |
Applications
| Data-Acquisition Systems | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing multiple RTD, thermocouple, or strain-gauge sensor outputs into a single high-precision ADC channel under noisy plant-floor conditions. IC Role / Device Role / Timing Role: Fault-protected analog switch providing channel selection and overvoltage blocking before the ADC front-end amplifier. Use Value: Eliminates need for external TVS diodes and series resistors per channel, reducing BOM count and PCB area while maintaining ±40V transient immunity. | Use Scenario: Routing analog control signals (e.g., 4–20mA loop outputs, valve position feedback) between PLC I/O modules and field devices in hazardous environments. IC Role / Device Role / Timing Role: High-voltage-tolerant signal router enabling safe hot-swap of I/O cards without system shutdown. Use Value: Withstands accidental 48V DC wiring faults and ESD events up to ±15kV, ensuring uninterrupted operation in SIL2-certified control loops. |
| Avionics Signal Management | ATE Equipment Channel Switching |
Use Scenario: Selecting between primary and backup flight sensor data (airspeed, altitude, attitude) in fly-by-wire ECUs operating across −55°C to +125°C extended range variants. IC Role / Device Role / Timing Role: Redundant-path analog multiplexer with guaranteed break-before-make and rail-to-rail fault clamping. Use Value: Prevents cross-talk or shorting during failover transitions, meeting DO-160 Section 22 lightning-induced transient requirements. | Use Scenario: Configuring stimulus/response paths in automated test equipment for mixed-signal IC validation, where DUT pins must be dynamically connected to sources, meters, and loads. IC Role / Device Role / Timing Role: Precision analog switch enabling fast, glitch-free reconfiguration of test fixture connections under software control. Use Value: 180ns transition time and 50ns break-before-make interval minimize test cycle overhead while maintaining signal fidelity up to 1MHz. |
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 rated only to ±20V fault protection; higher 450Ω on-resistance; no overvoltage clamp action. | Suitable for lower-voltage industrial systems (<±25V transients) where cost sensitivity outweighs extreme fault margin. | Select ADG508F only if system-level transients are limited to ±20V and leakage <1nA at +85°C is acceptable. |
| DG458 | Non-fault-protected; lacks series-FET structure; no overvoltage blocking or output clamping; 120Ω lower RON (230Ω). | Applicable only in benign lab environments with pre-conditioned signals and external protection circuitry. | Choose DG458 only when full fault protection is implemented externally and lowest possible on-resistance is critical. |
Compared with ADG508F and DG458, the MAX354EWE uniquely delivers ±40V fault tolerance with supplies off, active output clamping, and guaranteed break-before-make-making it the sole option for unconditioned field-deployed systems requiring zero external protection components.
Availability
MAX354EWE is available at Aetrix Electronics and suitable for data-acquisition systems, industrial process control, and avionics signal management requiring stable component supply across extended temperature ranges (−40°C to +85°C).
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) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.
The MAX354/MAX355 product line was engineered specifically for fault-tolerant analog signal routing in harsh environments-prioritizing overvoltage resilience, rail-to-rail analog swing, and seamless integration into safety-critical measurement and control architectures.
FAQ
What is the maximum overvoltage the MAX354EWE can withstand with power supplies disconnected?
The MAX354EWE withstands continuous ±40V overvoltage on any analog terminal-even with V+ and V− disconnected or at 0V. This is enabled by its series N/P/N FET architecture, which blocks current flow using gate-source voltage thresholds independent of supply presence. At −40V input, the N-channel FET turns on but the P-channel remains off, isolating the output. The MAX354EWE maintains this protection across its full −40°C to +85°C operating range without derating.
Does the MAX354EWE support demultiplexing, and how does fault protection behave in that mode?
Yes, the MAX354EWE supports full bidirectional demultiplexing: apply the signal to COM and route it to any selected NOx pin. Fault protection remains fully active-overvoltage on an unselected NOx pin still triggers clamping and leakage limiting, and the on-channel output is clamped identically whether used as mux or demux. Break-before-make timing is preserved, and no additional external components are needed to maintain protection integrity in demux configuration.
How does on-resistance variation affect precision measurements, and what is the matching spec between channels?
The MAX354EWE guarantees ≤350Ω max on-resistance at +25°C and ≤450Ω over −40°C to +85°C. Channel-to-channel RON matching is specified as ∆RON ≤15Ω (max), meaning the difference between highest and lowest RON across all eight channels stays within 15Ω. This tight matching minimizes gain error skew in multi-channel instrumentation amplifiers and ensures consistent time constants when driving capacitive loads like ADC input networks.
Can the MAX354EWE operate from a single +12V supply, and what analog signal range is supported?
Yes, the MAX354EWE operates from a single +12V supply with V− tied to GND. In this configuration, the analog signal range is limited to approximately 0V to +10.5V (V+ −1.5V), as the output clamps 1.5V below V+. Input signals beyond this range will cause the on-resistance to rise sharply and limit current, preserving protection-but usable linear range remains 0V to +10.5V. The device draws <1.5mW total quiescent power in this mode.
Is the MAX354EWE pin-compatible with the MAX354CWE, and what is the key functional difference?
Yes, the MAX354EWE is pin-compatible and footprint-compatible with the MAX354CWE. The sole functional difference is temperature rating: MAX354CWE is specified for 0°C to +70°C operation, while MAX354EWE extends to −40°C to +85°C. All electrical parameters-including on-resistance, leakage, fault protection, and switching times-are identical across both versions at their respective temperature ranges. No design changes are required when upgrading from C-grade to E-grade.
MAX354EWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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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