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Analog Devices Inc./Maxim Integrated MAX14866UTM+T
- Part No.:
- MAX14866UTM+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
MAX14866UTM+T.pdf
- Description:
- IC SWITCH SPST X 16 13OHM 48TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,147
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Product details
Overview
The MAX14866UTM+T from Maxim Integrated is a 16-channel, high-voltage (±110V), analog SPST switch designed for ultrasound transmit/receive multiplexing. It operates from a single +5V low-voltage supply (VCC) and separate 1.7V–5.5V logic supply (VDD), delivers 7Ω typical RON, <100pC charge injection, and 50MHz large-signal bandwidth - enabling high-fidelity HV burst transmission in medical probe front-ends.
For engineers reviewing the MAX14866UTM+T datasheet, MAX14866UTM+T pinout, MAX14866UTM+T application, or MAX14866UTM+T equivalent, this device supports SPI-controlled individual channel switching (up to 30MHz), global SET/CLR bank control, SOI-based latchup-free operation, and dual-package availability (TQFN-48 or WLP) - critical for space-constrained, safety-compliant ultrasound transducer designs.
Technical Context
The MAX14866UTM+T implements 16 independent analog switches using Silicon-on-Insulator (SOI) process technology, enabling ±110V COM/NO voltage tolerance and robustness against ultrasound-induced overshoots/undershoots. Its architecture integrates a 16-bit SPI shift register with transparent latch, supporting daisy-chain configuration and synchronous update via LE signal.
Switch control is dual-mode: precise per-channel programming via 16-bit SPI (MSB-first, 30MHz max clock) or simultaneous bank-level action via asynchronous SET (close all) and CLR (open all) inputs - with CLR dominant over SET. Transmit-safe operation is enforced by internal HV-detect circuitry that inhibits SPI writes during ±2V+ analog activity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | 16 independent SPST analog switches - enables full MUX flexibility for 1D/2D ultrasound arrays. |
| Analog voltage range | ±110V across COM–NO - supports 210VPKPK linear transmit bursts without external HV supplies. |
| RON (typ) | 7Ω at 0V - ensures low insertion loss and minimal signal distortion in transmit path. |
| Charge injection | <100pC - minimizes DC offset and settling error after switching, critical for harmonic imaging accuracy. |
| Bandwidth (large-signal) | >50MHz at 60V amplitude - preserves fidelity of short-duration, high-frequency ultrasound bursts. |
| SPI clock rate | Up to 30MHz - enables sub-microsecond reconfiguration for dynamic beamforming or multi-plane scanning. |
| Off-isolation (TX) | –75dB at 5MHz - suppresses crosstalk between active and inactive channels during transmit. |
| Package | 48-pin TQFN (7mm × 7mm) - industry-standard footprint with exposed thermal pad for probe-level thermal management. |
Pinout & Package
MAX14866UTM+T is packaged in a 48-pin, 7mm × 7mm, 0.5mm-pitch Thin Quad Flat No-lead (TQFN) with exposed thermal pad (EP). The package supports standard reflow and provides low θJA = 25°C/W (multilayer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM15 | Analog common terminal (x16) | Connects to transmit/receive front-end circuitry; must be driven before NO-side HV application. |
| NO0–NO15 | Analog normally-open terminal (x16) | Connects to transducer elements; HV bursts applied only to COM side when switch is ON. |
| VCC | +5V analog supply input | Powers high-voltage switch core; requires ≥0.1µF ceramic bypass to GND. |
| VDD | +1.7V to +5.5V logic supply | Powers digital interface; allows level-shifting compatibility with 1.8V/2.5V/3.3V/5V controllers. |
| DIN, DOUT, CLK, LE | SPI serial interface | Supports daisy-chaining; LE latches 16-bit data to update all switches synchronously. |
| SET, CLR | Asynchronous global control | SET closes all 16 switches; CLR opens all - used for relay replacement or rapid bank selection. |
| GND (x10 pins + EP) | Ground reference | Multiple dedicated GND pins and exposed pad ensure low-impedance return paths for HV and digital noise. |
Key Features
| Feature | Design Value |
|---|---|
| No dedicated HV supply required | Operates from single +5V VCC - eliminates HV rails in probe head, reducing size, cost, and safety certification burden. |
| SOI process technology | Latchup-free operation under ±110V stress - ensures reliability during resonant transducer ring-down events. |
| RON flatness across input range | Remains stable from –105V to +105V - preserves linearity and harmonic integrity in bipolar burst transmission. |
| Integrated bleed resistors | Discharges transducer capacitance post-transmit - prevents residual voltage buildup and improves image stability. |
| HV-aware SPI inhibition | Automatically blocks SPI writes for 4.5µs when ±2V+ analog signal detected - prevents corruption during HV burst. |
| Extended logic input range | Accepts 1.8V–5V CMOS levels on DIN/CLK/LE/SET/CLR - simplifies interfacing with diverse microcontrollers and FPGAs. |
Applications
| Medical Ultrasound Imaging | Non-Destructive Testing (NDT) |
|---|---|
|
Use Scenario: Beamforming and channel selection in handheld or cart-based ultrasound systems with 128+ element linear/phased arrays. IC Role / Device Role / Timing Role: High-voltage analog MUX routing transmit pulses to selected transducer elements and receive echoes back to T/R switches. Use Value: Enables compact, low-power probe designs with no onboard HV generation - meeting IEC 60601-1 creepage/clearance requirements. |
Use Scenario: Multiplexing ultrasonic transducers in industrial flaw detection equipment for weld inspection or material thickness gauging. IC Role / Device Role / Timing Role: Isolating active test channels from idle ones during high-energy pulse-echo cycles to prevent cross-coupling and false indications. Use Value: Delivers –75dB off-isolation at 5MHz and <100pC charge injection - ensuring clean echo capture and repeatable defect sizing. |
| Relay Replacement | High-Density Probe Integration |
|
Use Scenario: Solid-state replacement of electromechanical relays in automated test equipment requiring fast, silent, wear-free switching. IC Role / Device Role / Timing Role: Performing bank-level ON/OFF control via SET/CLR signals to emulate mechanical relay banks with µs-scale response. Use Value: Eliminates relay bounce, contact wear, and EMI - while supporting 30MHz SPI reconfiguration for adaptive test sequencing. |
Use Scenario: Embedding within ultrasound probe housing where PCB real estate is limited to <1.9mm²/channel. IC Role / Device Role / Timing Role: Providing 16-channel HV switching in 7mm × 7mm TQFN package with thermal pad for direct heatsinking to metal probe body. Use Value: Achieves >2× channel density vs. discrete MOSFET solutions - enabling higher-resolution 3D/4D imaging with minimal probe profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14865UTM+T | 16-channel, identical architecture but rated for ±85V COM–NO; lower RON (5.5Ω typ) and reduced charge injection (75pC). | Optimized for lower-voltage ultrasound systems (<170VPKPK) or NDT with tighter linearity budgets. | Select MAX14865UTM+T when system peak voltage stays ≤±85V and ultra-low distortion is prioritized over maximum voltage headroom. |
| TSM1016IRTDT | 16-channel HV switch with ±100V rating, 12Ω RON, no integrated bleed resistors, and parallel control only (no SPI). | Targeted at simpler relay-replacement or fixed-MUX applications lacking need for daisy-chain programmability. | Choose TSM1016IRTDT for cost-sensitive, non-beamforming systems where SPI control and SOI robustness are not required. |
Compared with MAX14865UTM+T and TSM1016IRTDT, the MAX14866UTM+T uniquely combines ±110V rating, SOI latchup immunity, integrated bleed resistors, and 30MHz SPI - making it the only option qualified for high-end portable ultrasound probes demanding both safety compliance and dynamic beam steering.
Availability
MAX14866UTM+T is available at Aetrix Electronics and suitable for medical ultrasound imaging, non-destructive testing, and high-density probe integration requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX14866UTM+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) is a semiconductor company specializing in precision analog, mixed-signal, and high-reliability ICs for demanding industrial, medical, and communications applications.
The MAX14866UTM+T belongs to Maxim's high-voltage ultrasound analog switch product line, engineered specifically to replace bulky HV relays and discrete MOSFET arrays in compact, safety-certified medical transducers.
FAQ
What voltage ranges can the MAX14866UTM+T safely switch?
The MAX14866UTM+T supports ±110V across its COM and NO terminals, enabling 210VPKPK linear analog signal transmission. Absolute maximum ratings specify –110V to +110V for COMx/NOx relative to GND, and –110V to +110V between COMx and NOx. Operation beyond these limits risks permanent damage. The device is optimized for ultrasound burst transmission up to 50MHz and requires GND-biasing of both terminals prior to HV activation.
Does the MAX14866UTM+T require external high-voltage supplies?
No - the MAX14866UTM+T operates entirely from low-voltage supplies: VCC = +5V ±5% powers the HV switch core, and VDD = +1.7V to +5.5V powers the digital interface. This eliminates the need for dedicated HV rails in the probe head, reducing size, cost, and complexity while easing compliance with medical safety standards like IEC 60601-1.
How does the MAX14866UTM+T prevent SPI corruption during ultrasound transmission?
The MAX14866UTM+T features an internal HV-detect circuit that monitors analog pins for ±2V+ signals. When triggered, it automatically inhibits SPI programming for up to 4.5µs - ignoring DIN/CLK activity and holding the current switch state. This prevents misconfiguration caused by switching noise during high-energy transmit bursts, ensuring deterministic behavior in real-time beamforming systems.
Can the MAX14866UTM+T be used in daisy-chain configurations?
Yes - the MAX14866UTM+T supports daisy-chaining via its DOUT pin, which outputs shifted-in data delayed by 16 clocks. Connect DOUT of one device to DIN of the next, synchronize CLK/LE/CLR/SET across all units, then pulse LE low to simultaneously update all 16-bit latches. This enables scalable channel expansion (e.g., 64-channel MUX with four devices) without additional GPIO overhead.
What is the role of the SET and CLR pins on the MAX14866UTM+T?
SET and CLR provide asynchronous global control: driving SET high closes all 16 switches; driving CLR high opens all. CLR takes priority over SET. These pins enable rapid bank-level switching for relay replacement, bi-plane probe selection, or emergency shutdown - independent of SPI timing. LE must be pulsed low after assertion to commit the state to the latch.
MAX14866UTM+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 16
- On-State Resistance (Max):
- 13Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 1.7V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 4µs, 4µs
- -3db Bandwidth:
- 50MHz
- Charge Injection:
- 100pC
- Channel Capacitance (CS(off), CD(off)):
- 7.7pF
- Current - Leakage (IS(off)) (Max):
- 1µA
- Crosstalk:
- -65dB @ 5MHz
- Operating Temperature:
- 0°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TQFN (7x7)
MAX14866UTM+T FAQ
1.How can I place an order for MAX14866UTM+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14866UTM+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 MAX14866UTM+T reliable?
The price and inventory of MAX14866UTM+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14866UTM+T is usually 5 days.
3.What payment methods are accepted for MAX14866UTM+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14866UTM+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14866UTM+T?
MAX14866UTM+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14866UTM+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 MAX14866UTM+T?
For technical support, including MAX14866UTM+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14866UTM+T requirements.
6.How does Aetrix verify that MAX14866UTM+T is sourced from the original manufacturer or authorized distributors?
All MAX14866UTM+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 MAX14866UTM+T meets industry standards.
7.What is the process for return or replacement of MAX14866UTM+T?
All MAX14866UTM+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14866UTM+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 MAX14866UTM+T part is unused and in its original packaging.
Return procedure for MAX14866UTM+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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