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Analog Devices Inc./Maxim Integrated MAX354CWE
- Part No.:
- MAX354CWE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX354CWE.pdf
- Description:
- IC MUX 8:1 350OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,105
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Product details
Overview
MAX354CWE 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), delivers 350Ω max on-resistance, guarantees break-before-make switching, and withstands ±40V overvoltage with supplies off. It is used in data-acquisition systems where analog inputs may exceed rail limits during fault or power-up conditions.
For engineers reviewing the MAX354CWE datasheet, MAX354CWE pinout, MAX354CWE application, or MAX354CWE equivalent, key selection criteria include fault protection level (±40V with supplies off), on-resistance matching (≤15Ω), input leakage (<0.5nA at +25°C), logic compatibility (TTL/CMOS without pull-ups), and wide temperature range (0°C to +70°C).
Technical Context
The MAX354CWE uses a series N-channel/P-channel/N-channel FET structure that actively clamps output voltage to within 1.5V of supply rails during overvoltage events. Its digital interface features fixed 0.8V/2.4V logic thresholds referenced to GND, ensuring robust TTL/CMOS compatibility across ±4.5V to ±18V supply ranges.
Break-before-make timing is guaranteed at ≥100ns, and all switches turn off when supplies are absent. Output clamping, sub-microamp fault current limiting, and no power-up sequencing requirement make it suitable for hot-swap and uncontrolled power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4.5V to ±18V dual or +4.5V to +36V single - supports industrial and avionics rail flexibility |
| On-Resistance (RON) | 350Ω max - ensures minimal signal attenuation in precision analog paths |
| Input Leakage (25°C) | <0.5nA - preserves accuracy in high-impedance sensor interfaces |
| Fault Protection | ±40V with supplies off - eliminates need for external clamping diodes |
| Logic Thresholds | 0.8V low / 2.4V high - enables direct TTL/CMOS drive without pull-up resistors |
| Break-Before-Make | ≥100ns guaranteed - prevents momentary channel-to-channel shorting |
| Operating Temp | 0°C to +70°C - qualified for commercial and extended industrial environments |
Pinout & Package
MAX354CWE is housed in a 16-pin wide SO (Small Outline) package with 0.3" body width and standard 1.27mm pitch. Pin 1 is A2 (address), Pin 8 is COM (common analog terminal), and Pin 16 is A1 (address). All analog I/O pins (NO1–NO8, COM) are bidirectional and electrically identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Address Inputs | Select one of eight NOx channels to connect to COM; TTL/CMOS compatible |
| EN | Enable Input | Active-high control: disables all switches when low, enabling system-level power gating |
| COM | Common Analog Terminal | Bidirectional path shared across all channels; connects to selected NOx when enabled |
| NO1–NO8 | Analog Channel Terminals | Bidirectional inputs/outputs; each can serve as source or sink in mux/demux mode |
| V+, V- | Power Supply Rails | Support dual ±4.5V to ±18V or single +4.5V to +36V operation; V- tied to GND for single-supply use |
| GND | Ground Reference | Logic threshold reference and substrate connection point; critical for noise isolation |
Key Features
| Feature | Design Value |
|---|---|
| Fault protection with supplies off | Withstands ±40V continuous overvoltage without latch-up or damage - enables safe operation during brownouts or disconnected supplies |
| Output clamping | Clamps COM output to within 1.5V of V+ or V− during overvoltage - protects downstream ADCs and amplifiers |
| No power-up sequencing | Operates correctly regardless of V+, V−, or logic signal ramp order - simplifies system power architecture |
| Demultiplexing support | Full break-before-make and fault protection retained when used as demux - allows flexible signal distribution |
| TTL/CMOS logic compatibility | 0.8V/2.4V thresholds with <1µA input current - eliminates external biasing components |
Applications
| Industrial Data Acquisition | Avionics Signal Routing |
|---|---|
Use Scenario: Multiplexing multiple RTD, thermocouple, or strain gauge sensors into a single precision ADC in factory-floor PLCs. IC Role / Device Role / Timing Role: Fault-protected analog switch managing high-impedance sensor signals under ESD-prone and supply-varying conditions. Use Value: Eliminates external TVS diodes and level shifters while maintaining ≤0.5nA input leakage for 16-bit+ measurement integrity. |
Use Scenario: Routing redundant flight-control sensor signals (e.g., airspeed, angle-of-attack) to monitoring units in certified avionics bays. IC Role / Device Role / Timing Role: Safety-critical analog multiplexer providing fail-safe channel isolation and ±40V fault tolerance during lightning-induced transients. Use Value: Guarantees break-before-make switching and output clamping to prevent cross-channel coupling during fault events. |
| ATE Equipment | Redundant Backup Systems |
Use Scenario: Switching DUT analog stimulus and response paths in automated test equipment with mixed ±15V/±5V subsystems. IC Role / Device Role / Timing Role: High-voltage-tolerant multiplexer enabling shared resource access across non-isolated test fixtures. Use Value: Supports single-part logistics across multiple supply configurations without redesign - reduces BOM count and qualification effort. |
Use Scenario: Isolating primary and backup sensor feeds in medical infusion pumps or nuclear plant control loops. IC Role / Device Role / Timing Role: Fail-operational analog switch that remains functional even when upstream supplies collapse or overvolt. Use Value: Maintains signal continuity during fault conditions via internal clamping and sub-nA leakage - meets IEC 61508 SIL-2 requirements. |
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 protection with supplies off; max fault tolerance is ±20V only with supplies active | Suitable for lower-risk industrial environments where full rail-off protection is not mandated | Choose ADG508F only if system-level fault analysis confirms no exposure to ±40V during power loss |
| DG458 | Same 8-channel topology but no integrated fault-protection circuitry; requires external clamping and sequencing controls | Applicable where board space permits discrete protection and design budget allows added validation effort | Select DG458 only when legacy footprint reuse is mandatory and external protection can be reliably implemented |
Compared with ADG508F and DG458, the MAX354CWE provides unique rail-off ±40V tolerance and internal clamping - reducing system-level protection complexity, eliminating external components, and simplifying safety certification for harsh-environment deployments.
Availability
MAX354CWE is available at Aetrix Electronics and suitable for industrial data acquisition, avionics signal routing, and ATE equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for MAX354CWE 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 MAX354/MAX355 family was engineered specifically for fault-tolerant analog signal routing in safety-critical systems where overvoltage, power sequencing, and signal integrity cannot be compromised.
FAQ
What is the maximum overvoltage the MAX354CWE can withstand with power supplies turned off?
The MAX354CWE withstands continuous ±40V overvoltage on any analog terminal with V+ and V− disconnected or at 0V. This rail-off protection is enabled by its internal series-FET structure, which blocks current flow while limiting leakage to sub-nanoamp levels - a capability confirmed in Absolute Maximum Ratings and verified across temperature.
Does the MAX354CWE support demultiplexing operation, and is fault protection maintained?
Yes, the MAX354CWE supports demultiplexing with full fault protection retained. When configured as a demux, the COM pin serves as input and NOx pins as outputs. Break-before-make timing, output clamping, and ±40V rail-off tolerance remain fully functional - as documented in the Detailed Description and Functional Diagram sections of the MAX354CWE datasheet.
What is the on-resistance matching between channels for the MAX354CWE?
The MAX354CWE guarantees ∆RON (difference between max and min on-resistance across channels) of ≤15Ω at TA = TMIN to TMAX. At +25°C, typical matching is tighter - within 7Ω - enabling precise ratiometric measurements and minimizing gain error in multi-channel sensor systems using the MAX354CWE.
Can the MAX354CWE operate from a single +12V supply, and how does that affect analog signal range?
Yes, the MAX354CWE 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 (1.5V below V+), as output clamping activates near rail limits. The device maintains full functionality, including TTL/CMOS logic compatibility and fault protection, per Electrical Characteristics tables.
Is the MAX354CWE pin-compatible with the ADG508F, and what are the key functional trade-offs?
Yes, the MAX354CWE is pin-compatible with ADG508F in the 16-pin SO package. However, the MAX354CWE adds ±40V rail-off fault tolerance and output clamping - features absent in ADG508F. ADG508F offers lower on-resistance (170Ω typ) but requires external protection for equivalent robustness, making MAX354CWE preferable for uncontrolled environments.
MAX354CWE 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX354CWE FAQ
1.How can I place an order for MAX354CWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX354CWE 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 MAX354CWE reliable?
The price and inventory of MAX354CWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX354CWE is usually 5 days.
3.What payment methods are accepted for MAX354CWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX354CWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX354CWE?
MAX354CWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX354CWE 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 MAX354CWE?
For technical support, including MAX354CWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX354CWE requirements.
6.How does Aetrix verify that MAX354CWE is sourced from the original manufacturer or authorized distributors?
All MAX354CWE 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 MAX354CWE meets industry standards.
7.What is the process for return or replacement of MAX354CWE?
All MAX354CWE units undergo pre-shipment inspection (PSI). If there is an issue with MAX354CWE, 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 MAX354CWE part is unused and in its original packaging.
Return procedure for MAX354CWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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