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Analog Devices Inc./Maxim Integrated MAX14662ETI+
- Part No.:
- MAX14662ETI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX14662ETI+.pdf
- Description:
- IC SWITCH SPST-NOX8 1OHM 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,036
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Product details
Overview
MAX14662ETI+ from Maxim Integrated is an 8-channel SPST analog switch IC with serial I²C/SPI control, Beyond-the-Rails™ ±5.5V signal handling capability across +1.6V to +5.5V single supply, 0.425Ω typical on-resistance, and ±15kV HBM ESD protection on all A_/B_ pins - deployed in high-fidelity audio multiplexing and port protection circuits.
For engineers reviewing the MAX14662ETI+ datasheet, MAX14662ETI+ pinout, MAX14662ETI+ application, or MAX14662ETI+ equivalent, this page delivers verified technical context, real-world switching performance metrics (THD+N = 0.001%, -40dB off-isolation), package-validated pin functions, and two confirmed alternative parts for signal-path redesign.
Technical Context
The MAX14662ETI+ integrates eight independent CMOS SPST switches controlled via configurable serial interface - selectable between I²C (with AD0/AD1 address pins supporting up to four devices per bus) and SPI (with DOUT chaining capability). All switches update simultaneously on CS rising edge in SPI mode or after full byte write in I²C mode.
Its Beyond-the-Rails™ architecture enables ±5.5V analog signal passage regardless of VCC (1.6V–5.5V), while low RON flatness (0.005Ω typ) and THD+N (0.001% typ) ensure minimal distortion across full signal range. Thermal shutdown activates at +150°C with 30°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Count & Type | 8 × SPST - enables independent routing of eight analog signals without crosstalk-induced coupling |
| Analog Signal Range | ±5.5V - passes rail-to-rail audio or sensor signals even with 1.6V supply, eliminating level-shifting circuitry |
| On-Resistance (RON) | 0.425Ω typ - minimizes insertion loss and voltage drop in precision signal paths |
| THD + Noise | 0.001% typ - preserves fidelity in high-resolution audio and measurement applications |
| ESD Protection (A_/B_) | ±15kV HBM - sustains repeated electrostatic discharge events during board assembly and field operation |
| Supply Voltage Range | +1.6V to +5.5V - supports direct interfacing with 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Off-Isolation | -40dB at 1MHz - suppresses signal leakage between inactive channels in multiplexed systems |
Pinout & Package
MAX14662ETI+ is housed in a 28-pin, 4mm × 4mm TQFN-EP package with exposed pad (EP) connected internally to GND for thermal management. Pin 1 is SPI/I²C mode select; pins 2–9 and 14–21 are dedicated A1–A8 and B1–B8 switch terminals; pins 22–28 provide serial control (SD, CS/AD0, SCLK/SCL, DIN/SDA, DOUT/AD1); pins 11 and 25 are GND; pin 26 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SPI/I²C) | Serial protocol select / SPI DOUT supply | Low = I²C mode; High = SPI mode; also powers DOUT output voltage level independently of VCC |
| 2–9 (A1–A8) | Analog input terminals | Source-side connections for each of eight SPST switches; tolerate ±5.5V regardless of VCC |
| 14–21 (B1–B8) | Analog output terminals | Drain-side connections; matched to A-pins for bidirectional signal flow with <0.02Ω RON matching |
| 22 (SD) | Active-low shutdown | Pulls all switches open and reduces ICC to ≤1µA; maintains ±5.5V tolerance on A_/B_ pins during shutdown |
| 23 (CS/AD0) | SPI chip select / I²C address bit 0 | In SPI: enables serial load; in I²C: sets LSB of 7-bit slave address (0x98–0x9F) |
| 24 (SCLK/SCL) | SPI clock / I²C serial clock | Accepts up to 400kHz I²C or >10MHz SPI timing; supports daisy-chained SPI configurations |
| 27 (DIN/SDA) | SPI data in / I²C serial data | Bi-directional in I²C (open-drain, requires pull-up); unidirectional data input in SPI |
| 28 (DOUT/AD1) | SPI data out / I²C address bit 1 | Shifts out prior register contents during SPI load; sets MSB of I²C slave address |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ operation | Enables ±5.5V analog signal switching with any 1.6V–5.5V supply - eliminates external charge pumps or dual supplies |
| Independent per-switch control | All eight switches configurable individually via single 8-bit register (DIR0), enabling arbitrary connection matrices |
| Daisy-chain SPI capability | DOUT pin outputs shifted-in data, allowing cascaded configuration of multiple MAX14662ETI+ devices using one CS line |
| I²C address flexibility | Two hardware address pins (AD0/AD1) support four unique 7-bit addresses (0x98–0x9F) on shared bus |
| Ultra-low distortion | 0.001% THD+N and 0.005Ω RON flatness preserve signal integrity in audio, medical, and test equipment |
Applications
| Audio Switching/Multiplexing | Port Protection |
|---|---|
Use Scenario: Routing multiple microphone or line-level inputs to a single ADC in portable audio interfaces. IC Role / Device Role / Timing Role: SPST switch array managing analog signal path selection under microcontroller I²C command. Use Value: Maintains 0.001% THD+N and ±5.5V headroom across 1.8V–3.3V SoC supplies, avoiding signal clipping or DC bias shifts. |
Use Scenario: Isolating USB, HDMI, or RS-232 ports from ESD transients in industrial docking stations. IC Role / Device Role / Timing Role: Bidirectional analog switch placed in series with data lines to block surge currents during fault conditions. Use Value: Withstands ±15kV HBM on A_/B_ pins and remains functional post-ESD, eliminating need for discrete TVS diodes per line. |
| Power Management | Test & Measurement Signal Routing |
Use Scenario: Selecting between multiple voltage references or sensor excitation sources in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-leakage (±50nA off-state) switch enabling precise source selection without loading reference outputs. Use Value: 0.425Ω RON and <0.02Ω channel matching minimize gain error and offset drift in precision ratiometric measurements. |
Use Scenario: Configuring automated test equipment (ATE) signal paths for multi-channel DMM or oscilloscope front-ends. IC Role / Device Role / Timing Role: High-bandwidth (400MHz -3dB) switch matrix reconfiguring probe inputs, calibration loops, and shunt paths. Use Value: -40dB off-isolation and -80dB crosstalk prevent measurement contamination across 8 simultaneous channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14661ETI+ | 8-channel SPST with identical pinout, same Beyond-the-Rails™ spec, but lacks DOUT pin - no SPI daisy-chaining | Suitable where only I²C control is needed or single-device SPI use; not usable in chained SPI topologies | Select MAX14661ETI+ when SPI daisy-chain is unnecessary and cost optimization is prioritized |
| TMUX1308PWR | 8-channel SPST with 1.08Ω RON, ±3.6V signal range, no Beyond-the-Rails™, supports 1.08V–5.5V supply | Requires ≥±3.6V supply for full signal swing; higher RON increases insertion loss in low-voltage precision paths | Choose TMUX1308PWR only if system operates strictly within ±3.6V analog range and cost is primary constraint |
Compared with MAX14662ETI+, MAX14661ETI+ offers identical functionality minus daisy-chain capability, while TMUX1308PWR trades Beyond-the-Rails™ operation and lower RON for broader supply compatibility and lower unit cost - making MAX14662ETI+ optimal for ±5.5V signal integrity-critical designs.
Availability
MAX14662ETI+ is available at Aetrix Electronics and suitable for audio switching/multiplexing, port protection, and power management applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX14662ETI+ 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 precision, power, and interface applications across industrial, automotive, and communications markets.
The MAX14662ETI+ belongs to Maxim's Beyond-the-Rails™ analog switch family, engineered specifically for rail-independent signal routing in space-constrained, low-voltage systems demanding wide dynamic range and robust ESD immunity.
FAQ
What is the maximum analog signal voltage the MAX14662ETI+ can handle?
The MAX14662ETI+ supports ±5.5V analog signals on all A_ and B_ pins regardless of VCC value (1.6V–5.5V), thanks to its proprietary Beyond-the-Rails™ architecture. This allows it to pass full-scale audio or sensor signals without external level-shifting circuitry - a key differentiator versus conventional analog switches limited to VCC-referenced ranges.
Does the MAX14662ETI+ support both I²C and SPI protocols simultaneously?
No - the MAX14662ETI+ uses pin 1 (SPI/I²C) as a hard-wired mode selector: low = I²C mode, high = SPI mode. It cannot operate both protocols concurrently. However, the same physical pins (e.g., SCLK/SCL, DIN/SDA, DOUT/AD1) adapt functionally based on the selected mode, minimizing PCB footprint.
How does the MAX14662ETI+ achieve ±15kV HBM ESD protection on A_ and B_ pins?
The MAX14662ETI+ integrates specialized on-die ESD clamps on all A_ and B_ pins, rated to ±15kV per Human Body Model (HBM) test standard. These structures remain active whether the device is powered or unpowered, preventing latch-up and ensuring continued functionality after ESD events - critical for hot-pluggable interfaces.
Can the MAX14662ETI+ be used in daisy-chained SPI configurations?
Yes - the MAX14662ETI+ features a DOUT pin (pin 28) that outputs the last 8 bits shifted into the device, enabling seamless daisy-chaining of multiple units. When CS rises, each device updates its switches using the final 8 bits received, allowing synchronized configuration of large switch matrices with minimal GPIO usage.
What is the typical on-resistance flatness of the MAX14662ETI+ across its signal range?
The MAX14662ETI+ exhibits 0.005Ω typical on-resistance flatness (RFLAT) over the full ±5.5V signal range at VCC = 3.3V. This ultra-flat characteristic ensures consistent gain and minimal harmonic distortion in AC-coupled audio or precision instrumentation paths - directly contributing to its 0.001% THD+N specification.
MAX14662ETI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 8
- On-State Resistance (Max):
- 1Ohm
- Channel-to-Channel Matching (ΔRon):
- 20mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 35µs (Max), 5.5µs (Typ)
- -3db Bandwidth:
- 400MHz
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- 50nA
- Crosstalk:
- -80dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TQFN (4x4)
MAX14662ETI+ FAQ
1.How can I place an order for MAX14662ETI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14662ETI+ 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 MAX14662ETI+ reliable?
The price and inventory of MAX14662ETI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14662ETI+ is usually 5 days.
3.What payment methods are accepted for MAX14662ETI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14662ETI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14662ETI+?
MAX14662ETI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14662ETI+ 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 MAX14662ETI+?
For technical support, including MAX14662ETI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14662ETI+ requirements.
6.How does Aetrix verify that MAX14662ETI+ is sourced from the original manufacturer or authorized distributors?
All MAX14662ETI+ 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 MAX14662ETI+ meets industry standards.
7.What is the process for return or replacement of MAX14662ETI+?
All MAX14662ETI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14662ETI+, 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 MAX14662ETI+ part is unused and in its original packaging.
Return procedure for MAX14662ETI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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