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Analog Devices Inc./Maxim Integrated MAX14763ETA+T
- Part No.:
- MAX14763ETA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX14763ETA+T.pdf
- Description:
- IC SWITCH SPDT X 1 2OHM 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,784
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Product details
Overview
MAX14763ETA+T from Maxim Integrated is a single-pole/double-throw (SPDT) analog switch capable of routing bipolar signals beyond its supply rails. It operates from a single +3.0V to +5.5V supply, supports ±25V analog signal range, features 2Ω max on-resistance, 100MHz bandwidth, and thermal shutdown protection-enabling robust RS-485/CAN termination switching in industrial instrumentation.
For engineers reviewing the MAX14763ETA+T datasheet, MAX14763ETA+T pinout, MAX14763ETA+T application, or MAX14763ETA+T equivalent, key selection criteria include rail-to-rail signal handling capability, SPDT configuration with break-before-make timing (740ns), low 5.1mΩ RON flatness over ±25V, and TDFN-8 package compatibility with high-density PCB layouts.
Technical Context
The MAX14763ETA+T integrates three charge pumps (5V-regulated, +35V, and –27V) to bias internal switches for true above- and below-the-rails operation. Its SEL-controlled SPDT architecture provides bidirectional signal routing between COM and either A1 or A2, with guaranteed break-before-make timing of 740ns to prevent transient shorting.
Signal integrity is maintained via 58pF input capacitance, –83dB crosstalk at 100kHz, and –77dB off-isolation-critical for precision instrumentation and audio amplifier source selection where channel separation and low distortion (0.0012% THD+N) are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3.0V to +5.5V - enables direct interface with standard logic supplies without level-shifting |
| Analog Signal Range | –25V to +25V - supports industrial sensor interfaces and bus termination voltages exceeding rail limits |
| Max On-Resistance | 2Ω - ensures minimal voltage drop and power loss in 250mA continuous switching paths |
| RON Flatness | 5.1mΩ (typ) - maintains consistent gain and linearity across full ±25V input range |
| Bandwidth | 100MHz - preserves signal fidelity for high-speed digital and wideband analog routing |
| Break-Before-Make Time | 740ns - prevents momentary short-circuit during SPDT state transitions |
| ESD Protection | ±2kV HBM - safeguards against handling and system-level electrostatic discharge events |
Pinout & Package
MAX14763ETA+T is housed in an 8-pin (3mm × 3mm) TDFN-EP package with exposed pad connected to VN. The compact footprint supports high-density layout while enabling efficient thermal dissipation (θJA = 48°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Bypassed with 1µF ceramic capacitor; powers internal logic and charge pumps |
| GND | Ground reference | Common return path for all analog and digital circuitry |
| VN | Negative voltage output | Generated by internal –27V charge pump; bypassed with 0.1µF/50V capacitor |
| VP | Positive voltage output | Generated by internal +35V charge pump; bypassed with 0.1µF/50V capacitor |
| COM | Common analog terminal | Center pole of SPDT switch; bidirectional signal path with ±25V tolerance |
| A1 | Normally closed analog terminal | Connected to COM when SEL = low; supports 250mA continuous current |
| A2 | Normally open analog terminal | Connected to COM when SEL = high; same electrical specs as A1 |
| SEL | Digital control input | Logic-level compatible (VIL ≤ 0.8V, VIH ≥ 2.1V @ VCC = 5.5V); controls SPDT state |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Switches ±25V signals with VCC = +3.0V to +5.5V - eliminates need for external high-voltage supplies |
| Integrated charge-pump biasing | Three on-chip charge pumps generate ±35V/–27V rails - removes external bias circuitry and reduces BOM count |
| Thermal shutdown protection | Triggers at +154°C with 24°C hysteresis - prevents latch-up and permanent damage under overload |
| Low leakage performance | ±100nA COM/B off-leakage at 15V - preserves accuracy in high-impedance sensor and measurement circuits |
| High ESD robustness | ±2kV HBM rating on all pins - enhances reliability in field-deployed industrial and medical equipment |
Applications
| RS-485 Termination Switching | CAN Bus Termination Switching |
|---|---|
Use Scenario: Dynamically enabling/disabling 120Ω differential termination resistors at RS-485 bus ends based on network topology or data rate requirements. IC Role / Device Role / Timing Role: SPDT analog switch routing signal path between transceiver and termination resistor network; break-before-make timing prevents bus contention. Use Value: Eliminates manual jumper settings or mechanical relays; supports hot-pluggable multi-drop networks with stable impedance matching. | Use Scenario: Selecting between active and passive CAN termination configurations in automotive diagnostic or industrial control gateways. IC Role / Device Role / Timing Role: Bidirectional SPDT switch isolating 120Ω termination from CANH/CANL lines during sleep mode or fault recovery. Use Value: Reduces standby current by disconnecting termination; maintains ±25V common-mode tolerance required for ISO 11898-2 compliance. |
| Audio Amplifier Source Selection | Opto-Relay Replacement |
Use Scenario: Routing output from one of two audio amplifiers (e.g., Class-D and Class-AB) to a shared loudspeaker in consumer AV receivers. IC Role / Device Role / Timing Role: Low-distortion SPDT switch with 0.0012% THD+N and 100MHz bandwidth preserving full audio spectrum fidelity. Use Value: Enables seamless amplifier switchover without audible artifacts; replaces electromechanical relays with faster, silent, and wear-free solid-state switching. | Use Scenario: Replacing mechanical optocoupler-based relays in programmable logic controllers (PLCs) for AC/DC load switching up to 250mA. IC Role / Device Role / Timing Role: Solid-state SPDT switch providing galvanic isolation via external optocoupler-driven SEL control; handles ±25V control-side transients. Use Value: Achieves >1M cycle lifetime vs. <100k cycles for mechanical relays; reduces PCB area by 70% and eliminates coil drive circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1434BRUZ | 4-channel SPDT, 1.5Ω RON, but requires dual ±15V supplies for ±25V signal handling | Not suitable for single-supply systems; needs external charge pumps or split supplies | Select only if dual-supply infrastructure already exists and lower RON outweighs added complexity |
| TMUX6234RTER | Single SPDT, 2.1Ω RON, ±25V signal range, but no integrated charge pumps - relies on external bias | Lacks self-contained rail-to-rail capability; requires external ±35V/–27V generation | Prefer when board space allows discrete bias circuitry and cost sensitivity favors TI's pricing |
Compared with ADG1434BRUZ and TMUX6234RTER, MAX14763ETA+T uniquely integrates all necessary charge pumps for true single-supply ±25V operation-reducing component count, layout complexity, and qualification effort in space-constrained industrial designs.
Availability
MAX14763ETA+T is available at Aetrix Electronics and suitable for RS-485 termination switching, CAN bus configuration, and audio amplifier source selection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX14763ETA+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 high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX147xx family targets high-reliability signal routing in harsh environments-specifically engineered to replace electromechanical relays and discrete MOSFET switches in systems demanding rail-to-rail analog signal integrity and robust fault tolerance.
FAQ
What is the maximum continuous current rating for MAX14763ETA+T?
The MAX14763ETA+T supports ±250mA continuous current through its switch path (COM–A1 or COM–A2). This rating applies across the full –40°C to +85°C operating temperature range and is validated under worst-case conditions including 25V signal swing and 2Ω max on-resistance. Exceeding this limit risks thermal shutdown activation or long-term reliability degradation.
Does MAX14763ETA+T require external capacitors for operation?
Yes, MAX14763ETA+T requires two external bypass capacitors: a 0.1µF/50V ceramic capacitor between VP and GND, and another between VN and GND. These stabilize the internal +35V and –27V charge-pump outputs. A 1µF ceramic capacitor on VCC is also mandatory. Omitting any of these compromises rail-to-rail signal integrity and may cause erratic switching behavior.
Can MAX14763ETA+T operate with VCC = 3.0V while switching ±25V signals?
Yes, MAX14763ETA+T is fully specified to handle ±25V analog signals with VCC as low as +3.0V. Its integrated charge pumps autonomously generate the necessary high-voltage bias rails regardless of VCC within the 3.0V–5.5V range. This capability is confirmed in the Electrical Characteristics table and validated across the full –40°C to +85°C temperature range.
What is the function of the exposed pad (EP) on MAX14763ETA+T?
The exposed pad (EP) on MAX14763ETA+T must be soldered to the VN net on the PCB. It serves as the primary thermal conduction path from the die to the board, reducing junction-to-ambient thermal resistance to 48°C/W. Connecting EP to any potential other than VN violates the Absolute Maximum Ratings and may cause device failure or unpredictable switching behavior.
How does MAX14763ETA+T behave when unpowered but subjected to ±25V inputs?
When unpowered (VCC = 0V), MAX14763ETA+T tolerates ±25V on COM, A1, or A2 pins with typical input leakage below 1µA. Internal diodes charge the external VP/VN bypass capacitors, causing transient currents. To avoid diode damage, input dv/dt must be limited to ≤3V/µs-achieved using series resistors or controlled slew-rate drivers in the signal path.
MAX14763ETA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 2Ohm
- Channel-to-Channel Matching (ΔRon):
- 5.1mOhm
- Voltage - Supply, Single (V+):
- 3V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 1.8µs, 1ns
- -3db Bandwidth:
- 100MHz
- Charge Injection:
- 1370pC
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- 250nA
- Crosstalk:
- -83dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX14763ETA+T FAQ
1.How can I place an order for MAX14763ETA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14763ETA+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 MAX14763ETA+T reliable?
The price and inventory of MAX14763ETA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14763ETA+T is usually 5 days.
3.What payment methods are accepted for MAX14763ETA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14763ETA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14763ETA+T?
MAX14763ETA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14763ETA+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 MAX14763ETA+T?
For technical support, including MAX14763ETA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14763ETA+T requirements.
6.How does Aetrix verify that MAX14763ETA+T is sourced from the original manufacturer or authorized distributors?
All MAX14763ETA+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 MAX14763ETA+T meets industry standards.
7.What is the process for return or replacement of MAX14763ETA+T?
All MAX14763ETA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14763ETA+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 MAX14763ETA+T part is unused and in its original packaging.
Return procedure for MAX14763ETA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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