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Analog Devices Inc./Maxim Integrated MAX354CWE+T
- Part No.:
- MAX354CWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX354CWE+T.pdf
- Description:
- IC MUX 8:1 350OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,141
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Product details
Overview
MAX354CWE+T from Maxim Integrated is a fault-protected single 8-channel analog multiplexer with series N-P-N switch architecture, 350Ω max on-resistance, ±4.5V to ±18V dual-supply operation (or +4.5V to +36V single supply), and guaranteed break-before-make switching. It protects downstream circuitry from overvoltage faults up to ±40V with supplies off and clamps outputs at 1.5V below supply rails during overvoltage events-used in industrial data-acquisition systems requiring robust signal routing under transient stress.
For engineers reviewing the MAX354CWE+T datasheet, MAX354CWE+T pinout, MAX354CWE+T application, or MAX354CWE+T equivalent, key selection considerations include its fault-protection threshold (±40V with supplies off), leakage performance (<0.5nA at +25°C), TTL/CMOS logic compatibility without pull-ups, 180ns transition time, and wide temperature range (0°C to +70°C) in 16-pin wide SO package.
Technical Context
The MAX354CWE+T implements a three-FET series structure (N–P–N) that dynamically limits fault current by increasing on-resistance when analog inputs exceed V+ − 1.5V or V− + 3V-enabling safe operation across ±40V input transients regardless of power state. Its digital interface uses fixed 0.8V/2.4V logic thresholds referenced to GND, independent of supply voltage, ensuring reliable control with TTL or CMOS drivers.
When used as a demultiplexer, it maintains full fault protection and break-before-make timing (100ns typical). Output clamping preserves polarity and prevents glitches during overvoltage transitions, while charge injection (≤180pC at ±15V) and off-isolation (>100dB at 100kHz) support precision signal integrity in high-reliability measurement paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 350Ω max - ensures low signal attenuation and minimal gain error in precision analog paths |
| Fault Protection | ±40V with supplies off - enables hot-swap and unpowered system resilience without external protection |
| Input Leakage | <0.5nA at +25°C - minimizes offset drift and loading in high-impedance sensor interfaces |
| Supply Range | +4.5V to +36V single or ±4.5V to ±18V dual - supports industrial rail flexibility including asymmetric configurations |
| Transition Time | 180ns typical - enables fast channel switching in high-throughput data acquisition |
| Logic Thresholds | 0.8V low / 2.4V high - guarantees direct TTL/CMOS compatibility without level-shifting or pull-up resistors |
| Break-Before-Make | 100ns guaranteed - prevents momentary shorting between input channels during address changes |
Pinout & Package
MAX354CWE+T is housed in a 16-pin wide SO (SOIC-W) package with 0.3-inch body width and standard 1.27mm pitch. Pin 1 is marked with a dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A2 | Address inputs selecting one of eight channels (A2 active only in MAX354); logic-compatible with 0.8V/2.4V thresholds |
| 2 | A1 | Second address bit; combined with A0/A2 to decode NO1–NO8 to COM path |
| 3 | V− | Negative supply rail; connect 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 terminals; share same electrical specs and protection behavior as NO1–NO4 |
| 13 | GND | Ground reference for logic and internal bias; forms isolation barrier between digital and analog sections |
| 14 | V+ | Positive supply rail; total V+–V− differential must be ≥±4.5V for guaranteed operation |
| 15 | EN | Enable input controlling all switches; low disables all paths, high enables selected channel with break-before-make |
Key Features
| Feature | Design Value |
|---|---|
| Fault protection with supplies off | Withstands ±40V continuous overvoltage even when V+ and V− are unpowered-no external TVS required |
| Output clamping during fault | Clamps COM output to ~1.5V below V+ or above V−, preserving polarity and preventing latch-up in connected ICs |
| No power-up sequencing | Operates correctly regardless of V+, V−, or logic signal ramp order-eliminates complex supply coordination |
| All-switches-off default | Outputs remain open-circuit when EN = low or supplies are absent-prevents unintended signal coupling |
| TTL/CMOS logic compatibility | 0.8V/2.4V thresholds function reliably across full temperature range without pull-up resistors or level shifters |
Applications
| Industrial Data-Acquisition Systems | Avionics Signal Routing |
|---|---|
Use Scenario: Multiplexing multiple RTD, thermocouple, or strain-gauge sensor signals into a single ADC channel in harsh factory environments with ESD and supply transients. IC Role / Device Role / Timing Role: Fault-protected analog switch providing channel selection and overvoltage isolation before signal conditioning and digitization. Use Value: Eliminates need for discrete protection diodes and reduces BOM count while maintaining <0.5nA leakage for sub-16-bit accuracy. |
Use Scenario: Routing critical flight-control sensor signals (e.g., airspeed, angle-of-attack) through redundant signal paths where single-point failure must be avoided. IC Role / Device Role / Timing Role: High-integrity analog multiplexer enabling hot-swappable channel reconfiguration with guaranteed break-before-make and no glitch propagation. Use Value: ±40V fault tolerance ensures continued operation during lightning-induced transients or power-rail collapse without signal corruption. |
| ATE Equipment Channel Selection | Redundant Backup Systems |
Use Scenario: Switching DUT test signals between stimulus sources and measurement instruments in automated test equipment with varying voltage rails and fault conditions. IC Role / Device Role / Timing Role: Precision analog mux supporting bidirectional signal flow (mux/demux) with sub-200ns switching and low charge injection (≤180pC). Use Value: Enables accurate settling to 0.01% within microseconds despite 100pF load capacitance-critical for high-speed parametric testing. |
Use Scenario: Implementing failover paths in safety-critical infrastructure (e.g., power grid monitoring) where primary and backup sensors feed parallel processing chains. IC Role / Device Role / Timing Role: Fault-isolated signal gate ensuring backup channel remains electrically disconnected until activated, with zero cross-talk during standby. Use Value: >100dB off-isolation at 100kHz prevents interference between active and standby paths, meeting 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 |
|---|---|---|---|
| ADG508FBRZ | Pin-compatible but lacks ±40V fault protection with supplies off; rated for ±20V max overvoltage only when powered | Suitable for lower-risk industrial environments where external protection is acceptable | Select ADG508FBRZ only if system-level fault coverage is provided externally and cost is prioritized over intrinsic resilience |
| MAX358ESE+ | Same fault-protection architecture but dual 4-channel configuration (MAX355 family); not pin-compatible with MAX354CWE+T | Preferred when space-constrained designs require two independent 4-channel muxes instead of one 8-channel unit | Choose MAX358ESE+ when board layout favors dual smaller muxes or when channel grouping simplifies routing |
Compared with ADG508FBRZ, MAX354CWE+T delivers superior intrinsic fault resilience without external components; versus MAX358ESE+, it offers higher channel density in a single package but requires different PCB layout and address decoding.
Availability
MAX354CWE+T is available at Aetrix Electronics and suitable for industrial data-acquisition systems, avionics signal routing, and ATE equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for MAX354CWE+T 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 precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX354/MAX355 product line was engineered specifically for fault-tolerant analog signal routing in mission-critical systems-prioritizing overvoltage resilience, leakage performance, and seamless integration with legacy TTL/CMOS controllers.
FAQ
What is the maximum overvoltage the MAX354CWE+T can withstand with power supplies disconnected?
The MAX354CWE+T withstands continuous ±40V overvoltage on any analog terminal-even when V+ and V− are unpowered. This is enabled by its series N-P-N FET structure, which blocks current flow via gate-source voltage biasing. The MAX354CWE+T does not require external clamping devices in such scenarios, making it ideal for hot-swap or maintenance-mode operation.
Does the MAX354CWE+T support single-supply operation, and what is the minimum voltage?
Yes, the MAX354CWE+T supports single-supply operation from +4.5V to +36V. Connect V− to GND, and ensure V+ ≥ +4.5V. At +4.5V, the analog output swing is limited to approximately +3.5V to −2V relative to GND, and switching times double-but break-before-make timing remains guaranteed. The MAX354CWE+T maintains 0.8V/2.4V logic thresholds regardless of supply configuration.
How does the MAX354CWE+T behave during an overvoltage event on an enabled channel?
When an overvoltage exceeds V+ − 1.5V or V− + 3V on an enabled channel, the MAX354CWE+T's internal N- or P-channel FET turns off, increasing on-resistance to near-infinity and clamping the COM output at ~1.5V below V+ or above V−. Polarity is preserved, no glitches occur, and leakage remains <5nA at +85°C. The MAX354CWE+T resumes normal operation immediately upon return to safe voltage levels.
Is the MAX354CWE+T pin-compatible with the ADG508F/ADG509F series?
Yes, the MAX354CWE+T is explicitly designed as a pin-compatible replacement for ADG508F and ADG509F, sharing identical pinout, logic thresholds, and footprint. However, unlike those parts, the MAX354CWE+T adds intrinsic ±40V fault protection with supplies off and improved leakage performance (<0.5nA vs. ~1nA typical for ADG508F), making it a functional upgrade without PCB redesign.
What is the guaranteed break-before-make interval for the MAX354CWE+T, and why is it critical?
The MAX354CWE+T guarantees a minimum 100ns break-before-make interval during channel switching. This prevents momentary shorting between two analog inputs (e.g., NO1 and NO2), which could damage upstream sensors or cause signal corruption in high-precision measurement systems. The timing is process- and temperature-invariant, ensuring reliability across 0°C to +70°C operation of the MAX354CWE+T.
MAX354CWE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX354CWE+T FAQ
1.How can I place an order for MAX354CWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX354CWE+T 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+T reliable?
The price and inventory of MAX354CWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX354CWE+T is usually 5 days.
3.What payment methods are accepted for MAX354CWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX354CWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX354CWE+T?
MAX354CWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX354CWE+T 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+T?
For technical support, including MAX354CWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX354CWE+T requirements.
6.How does Aetrix verify that MAX354CWE+T is sourced from the original manufacturer or authorized distributors?
All MAX354CWE+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX354CWE+T?
All MAX354CWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX354CWE+T, 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+T part is unused and in its original packaging.
Return procedure for MAX354CWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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