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Analog Devices Inc./Maxim Integrated MAX14761ETB+
- Part No.:
- MAX14761ETB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX14761ETB+.pdf
- Description:
- -25V TO +25V ANALOG SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
MAX14761ETB+ from Maxim Integrated is a dual-channel, single-pole/single-throw (SPST) analog switch designed for bipolar signal routing beyond supply rails. It operates from a single +3.0V to +5.5V supply, supports ±25V analog signals, features 2Ω max on-resistance, 100nA max on-leakage current, and delivers 100MHz bandwidth-enabling precision RS-485 termination switching in industrial communication systems.
For engineers reviewing the MAX14761ETB+ datasheet, MAX14761ETB+ pinout, MAX14761ETB+ application, or MAX14761ETB+ equivalent, key selection criteria include rail-to-rail signal handling capability, thermal shutdown protection, low RON flatness (5.1mΩ typ), and compatibility with fail-safe biasing networks in RS-485 transceiver interfaces.
Technical Context
The MAX14761ETB+ integrates three charge pumps (5V regulated, +35V, and -27V) to bias internal switches, enabling operation with analog signals extending 25V above and below its VCC rail. Its dual SPST architecture uses independent EN1/EN2 control inputs with break-before-make timing not applicable (non-SPDT topology).
Signal path design supports bidirectional current flow up to ±250mA per channel, with leakage currents specified at ±100nA (off-state) and ±250nA (on-state), and thermal shutdown activation at +154°C with 24°C hysteresis-critical for unattended industrial measurement nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3.0V to +5.5V - Enables direct interface with standard logic-supply domains without level-shifting. |
| Analog Signal Range | ±25V - Supports full RS-485 common-mode range (-7V to +12V) and overvoltage-tolerant instrumentation front-ends. |
| Max On-Resistance | 2Ω - Ensures minimal insertion loss (<0.1dB) in 50Ω impedance-matched signal paths at DC–10MHz. |
| On-Leakage Current | ±100nA max - Maintains high-impedance integrity in precision sensor multiplexing and ATE applications. |
| Bandwidth (-3dB) | 100MHz - Preserves signal fidelity for fast digital control signals and audio-frequency analog routing. |
| Switch Current Rating | ±250mA per channel - Sufficient for driving termination resistors (e.g., 120Ω RS-485) without derating. |
| Thermal Shutdown | +154°C activation - Protects against latch-up during sustained overload or ambient temperature excursions. |
Pinout & Package
MAX14761ETB+ is housed in a 10-pin, 3mm × 3mm TDFN-EP package with exposed pad connected to VN. The package supports high-density PCB layouts and provides low thermal resistance (θJA = 41°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Bypassed with 1µF ceramic capacitor; powers internal logic and charge-pump controllers. |
| GND | Ground reference | Common return for all analog and digital circuitry; must be low-impedance connection. |
| VN | Negative voltage output | Generated by internal -27V charge pump; requires 0.1µF/50V bypass to GND for stable bias. |
| VP | Positive voltage output | Generated by internal +35V charge pump; requires 0.1µF/50V bypass to GND for stable bias. |
| A1 / B1 | Channel 1 analog terminals | Bidirectional SPST path; A1 is controlled terminal, B1 is common-no polarity constraint. |
| A2 / B2 | Channel 2 analog terminals | Independent second SPST path with identical electrical behavior to Channel 1. |
| EN1 | Channel 1 enable input | Active-high logic control; drives switch closed when high, open when low (VIL ≤ 0.8V, VIH ≥ 2.1V @ VCC = 5.5V). |
| EN2 | Channel 2 enable input | Independent active-high control matching EN1 timing and voltage thresholds. |
| EP | Exposed thermal pad | Must be soldered to VN plane for thermal dissipation and EMI reduction; not electrically isolated. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports ±25V analog signals with no external bias-eliminates need for dual-supply op-amps or level shifters in mixed-voltage systems. |
| Integrated charge-pump biasing | Three on-chip charge pumps generate ±35V/−27V rails-removes requirement for external high-voltage supplies in industrial I/O modules. |
| Low RON flatness | 5.1mΩ typical variation across full ±25V input range-ensures consistent gain and THD+N < 0.0012% in audio and precision measurement paths. |
| ESD robustness | 2kV HBM rating on all pins-meets IEC 61000-4-2 Level 2 for field-deployable equipment without additional protection components. |
| Thermal protection | Auto-shutdown at +154°C with 24°C hysteresis-prevents permanent damage during fault conditions in sealed enclosures. |
Applications
| RS-485 Termination Switching | CAN Bus Termination Switching |
|---|---|
Use Scenario: Dynamically enabling/disabling 120Ω differential termination resistors at line ends in multi-drop industrial networks. IC Role / Device Role / Timing Role: Dual SPST switch controlling parallel resistor pairs on CANH/CANL or A/B lines; EN1/EN2 synchronized via microcontroller GPIO. Use Value: Eliminates manual jumper configuration and enables protocol-aware termination-reducing EMI and reflections during high-speed (500kbps+) data transmission. | Use Scenario: Remote reconfiguration of termination in automotive diagnostic or body-control networks where physical access is limited. IC Role / Device Role / Timing Role: Bidirectional analog switch isolating termination resistors from bus during sleep mode; withstands ±25V transients without latch-up. Use Value: Reduces quiescent current in off-state while maintaining bus integrity during wake-up transitions-meeting ISO 11898-2 standby requirements. |
| Opto-Relay Replacement | Industrial Measurement Multiplexing |
Use Scenario: Solid-state replacement of electromechanical relays in PLC I/O modules requiring >1M cycle lifetime and sub-millisecond switching. IC Role / Device Role / Timing Role: Low-RON, high-voltage analog switch routing 4–20mA sensor loops or ±10V actuator signals without contact wear. Use Value: Achieves 100x longer service life vs. mechanical relays and eliminates bounce-induced measurement errors in closed-loop control. | Use Scenario: Multiplexing multiple high-impedance sensor outputs (e.g., thermocouples, strain gauges) into a shared ADC front-end. IC Role / Device Role / Timing Role: Precision analog switch with <100nA leakage ensuring <0.01% gain error across 16-channel scan sequences. Use Value: Maintains signal integrity in 24-bit measurement systems without calibration drift caused by channel crosstalk or offset injection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BCPZ-REEL7 | Single SPDT, 2.1Ω RON, ±15V signal range, no integrated charge pumps | Requires external ±15V supplies; unsuitable for rail-to-rail ±25V operation | Select only if system already provides dual high-voltage rails and SPDT topology suffices. |
| TMUX6219RTER | Dual SPST, 2.4Ω RON, ±16.5V signal range, no thermal shutdown | Lacks overtemperature protection; limited to lower-voltage industrial sensors | Consider for cost-sensitive designs where thermal margin is guaranteed by enclosure cooling. |
Compared with ADG1419BCPZ-REEL7 and TMUX6219RTER, MAX14761ETB+ uniquely delivers ±25V rail-to-rail switching with self-contained bias generation and thermal safety-making it the only option qualified for unregulated fieldbus termination in harsh environments.
Availability
MAX14761ETB+ is available at Aetrix Electronics and suitable for industrial measurement systems, RS-485 network infrastructure, and CAN-based vehicle diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX14761ETB+ 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 industrial, communications, and computing applications.
The MAX147xx family targets high-reliability signal routing in electrically noisy environments-specifically engineered to replace opto-relays and discrete MOSFET switches in fieldbus, instrumentation, and medical equipment.
FAQ
What is the maximum continuous current rating per channel for MAX14761ETB+?
The MAX14761ETB+ supports ±250mA continuous current per channel under specified operating conditions (TA = -40°C to +85°C, VCC = +3.0V to +5.5V). This rating applies to both A1/B1 and A2/B2 paths independently and is validated with thermal shutdown active at +154°C to prevent damage during overload events.
Does MAX14761ETB+ require external capacitors for proper operation?
Yes, MAX14761ETB+ requires two external 0.1µF, 50V ceramic capacitors: one between VP and GND, and another between VN and GND. These stabilize the internal high-voltage charge pumps. A 1µF ceramic capacitor is also required between VCC and GND. Omitting any of these compromises rail-to-rail signal integrity and may trigger thermal shutdown.
Can MAX14761ETB+ operate with analog signals when VCC = 0V?
Yes, MAX14761ETB+ tolerates ±25V on A1, B1, A2, or B2 pins with VCC = 0V. Input leakage remains typically <1µA, though technology spread allows up to ~1mA transiently. Internal diodes charge the VP/VN bypass caps, so dv/dt must be limited to 3V/µs using series resistors to avoid exceeding 300mA diode current limits.
What is the on-resistance flatness specification for MAX14761ETB+?
The MAX14761ETB+ exhibits 5.1mΩ typical on-resistance flatness (ΔRON) across the full ±25V analog input range. This tight flatness ensures minimal harmonic distortion and consistent gain accuracy in precision analog signal paths-critical for THD+N performance of 0.0012% in audio and measurement applications.
Is MAX14761ETB+ pin-compatible with other devices in the MAX147xx family?
No, MAX14761ETB+ is not pin-compatible with MAX14759ETA+ or MAX14763ETA+. It uses a 10-pin TDFN package with dedicated EN1/EN2 controls, whereas MAX14759ETA+ is 8-pin (single SPST) and MAX14763ETA+ is 8-pin (SPDT with SEL pin). PCB layout must be specific to the MAX14761ETB+ pinout shown in the official datasheet.
MAX14761ETB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Strip
- Product Status:
- Active
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- 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):
- 300µs, 1ns
- -3db Bandwidth:
- 100MHz
- Charge Injection:
- 1370pC
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- 250nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
MAX14761ETB+ FAQ
1.How can I place an order for MAX14761ETB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14761ETB+ 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 MAX14761ETB+ reliable?
The price and inventory of MAX14761ETB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14761ETB+ is usually 5 days.
3.What payment methods are accepted for MAX14761ETB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14761ETB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14761ETB+?
MAX14761ETB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14761ETB+ 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 MAX14761ETB+?
For technical support, including MAX14761ETB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14761ETB+ requirements.
6.How does Aetrix verify that MAX14761ETB+ is sourced from the original manufacturer or authorized distributors?
All MAX14761ETB+ 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 MAX14761ETB+ meets industry standards.
7.What is the process for return or replacement of MAX14761ETB+?
All MAX14761ETB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14761ETB+, 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 MAX14761ETB+ part is unused and in its original packaging.
Return procedure for MAX14761ETB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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