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Analog Devices Inc./Maxim Integrated MAX14759ETA+T
- Part No.:
- MAX14759ETA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX14759ETA+T.pdf
- Description:
- IC SWITCH SPST-NO X 1 1OHM 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,146
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Product details
Overview
MAX14759ETA+T from Maxim Integrated is a 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 1Ω max on-resistance, 500mA max continuous switch current, and 100MHz typical -3dB bandwidth. It is used in RS-485/CAN termination switching and industrial instrumentation where rail-to-rail and beyond-rail signal integrity is critical.
For engineers reviewing the MAX14759ETA+T datasheet, MAX14759ETA+T pinout, MAX14759ETA+T application, or MAX14759ETA+T equivalent, this page delivers verified electrical parameters, thermal shutdown behavior, leakage performance at ±25V, TDFN-8 package layout guidance, and real-world use cases including opto-relay replacement and multiprotocol interface switching.
Technical Context
The MAX14759ETA+T integrates three charge pumps - a 5V regulated pump, a +35V high-voltage pump, and a -27V high-voltage pump - enabling operation with analog signals extending 25V above and below GND while powered from only +3.0V to +5.5V. Its internal bias generation eliminates need for external dual supplies.
It uses BiCMOS process technology to achieve 2.4mΩ typical RON flatness over -25V to +25V input range, 200nA max off-leakage at ±25V, and thermal shutdown activation at +154°C with 24°C hysteresis - ensuring robust operation in unpowered or fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3.0V to +5.5V - enables direct compatibility with common logic and microcontroller I/O domains without level-shifting. |
| Analog Signal Range | -25V to +25V - supports full RS-485 common-mode range (-7V to +12V), CAN bus transients, and industrial sensor outputs without clamping or distortion. |
| Max On-Resistance | 1Ω - ensures minimal voltage drop and power loss when routing 500mA signals, critical for precision measurement and termination resistor switching. |
| Switch Current Rating | ±500mA continuous - allows direct control of termination resistors and fail-safe bias networks in high-speed serial interfaces. |
| -3dB Bandwidth | 100MHz - preserves signal integrity for fast digital edges and audio-frequency analog waveforms without attenuation or phase shift. |
| Off-Leakage Current | ±250nA max at ±25V - prevents erroneous biasing or loading of high-impedance nodes in instrumentation and ATE systems. |
| Enable Turn-On Time | 152µs to 300µs - provides deterministic timing for synchronized termination enable/disable in protocol-aware systems. |
Pinout & Package
MAX14759ETA+T is housed in an 8-pin (3mm × 3mm) TDFN-EP package with exposed pad connected to VN. The package supports high-density PCB layouts and efficient thermal dissipation (θJA = 48°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Accepts +3.0V to +5.5V; bypassed with 1µF ceramic capacitor to GND for stable charge-pump operation. |
| GND | Ground reference | System ground return for all internal circuitry and charge-pump decoupling. |
| VN | Negative voltage output | Generates -27V bias; requires 0.1µF/50V ceramic capacitor to GND - not for external power sourcing. |
| B | Analog switch common terminal | Current path shared between A and B; bidirectional - functions as input or output depending on signal flow direction. |
| A | Analog switch normally open terminal | Open-circuit when EN = low; closed to B when EN = high; rated for ±25V, ±500mA. |
| VP | Positive voltage output | Generates +35V bias; requires 0.1µF/50V ceramic capacitor to GND - not for external power sourcing. |
| N.C. | No connection | Unbonded pin; must remain floating - no trace or solder mask required. |
| EN | Switch control input | Active-high logic input; drives internal gate drive to close A–B path; compatible with 3.3V/5V CMOS levels. |
Key Features
| Feature | Design Value |
|---|---|
| Above- and below-the-rails signal handling | Supports -25V to +25V analog signals with <1Ω RON, enabling direct interfacing with industrial buses without external level-shifting circuitry. |
| Integrated triple charge-pump bias generation | Eliminates need for ±15V or ±12V auxiliary supplies - reduces BOM count and board area while maintaining rail-exceeding performance. |
| Thermal shutdown protection | Activates at +154°C with 24°C hysteresis, preventing latch-up or permanent damage during sustained overload or ambient temperature excursions. |
| High ESD robustness | 2kV HBM rating on all pins ensures reliability during handling and system integration without additional protection components. |
| Low RON flatness | 2.4mΩ typical variation across full -25V to +25V range - maintains consistent gain and linearity in precision analog signal paths. |
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 protocol mode. IC Role / Device Role / Timing Role: SPST analog switch controlled by MCU GPIO to insert or remove termination without mechanical relays or discrete MOSFETs. Use Value: Enables protocol-flexible designs (e.g., RS-485/RS-232 multiprotocol transceivers) with zero added propagation delay and no contact wear. |
Use Scenario: Adding or removing split termination (two 60Ω resistors) on CANH/CANL lines to adapt to varying bus lengths or EMI requirements. IC Role / Device Role / Timing Role: Bidirectional SPST switch placed in series with termination network; withstands CAN common-mode transients up to ±25V. Use Value: Eliminates manual jumper configuration and supports automatic network reconfiguration via firmware control. |
| Opto-Relay Replacement | Industrial Instrumentation Signal Routing |
|
Use Scenario: Replacing electromechanical or optocoupled relays in test equipment where long lifetime, silent operation, and fast switching are required. IC Role / Device Role / Timing Role: Solid-state SPST switch providing galvanic isolation via voltage rating margin rather than physical separation - no coil drive or LED current needed. Use Value: Achieves >109 cycles lifetime, sub-300µs switching, and immunity to vibration/magnetic fields compared to mechanical alternatives. |
Use Scenario: Multiplexing sensor inputs (e.g., thermocouples, strain gauges) into a single ADC channel while preserving signal fidelity across wide voltage ranges. IC Role / Device Role / Timing Role: Low-leakage, low-RON analog switch routing high-impedance mV-level signals without introducing offset or gain error. Use Value: Maintains <0.0012% THD+N and 200nA max off-leakage, ensuring measurement accuracy in 24-bit precision systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14763ETA+ | SPDT configuration with SEL pin; 2Ω max RON; same ±25V signal range and TDFN-8 package. | Used for source selection (e.g., dual audio amplifiers); not suitable for simple on/off termination control like MAX14759ETA+T. | Select MAX14763ETA+ when dual-input routing is required; MAX14759ETA+T remains optimal for single-path enable/disable. |
| ADG1419BRMZ | SPST, ±15V signal range, 1.3Ω max RON, 5V-only supply; no integrated charge pumps; requires external bias for beyond-rail operation. | Lacks native ±25V capability - needs external voltage translators for RS-485/CAN, increasing complexity and cost. | Choose ADG1419BRMZ only if operating strictly within ±15V and existing design already includes bias infrastructure. |
Compared with MAX14763ETA+, MAX14759ETA+T offers lower RON and simpler control for on/off functions; versus ADG1419BRMZ, it delivers true rail-exceeding operation without external components - reducing bill-of-materials and layout risk in industrial and automotive communication systems.
Availability
MAX14759ETA+T is available at Aetrix Electronics and suitable for RS-485 termination switching, CAN bus adaptation, and industrial instrumentation requiring stable component supply, long-lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX14759ETA+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, communications, and computing applications.
The MAX14759ETA+T belongs to Maxim's "Above- and Below-the-Rails" analog switch family, engineered specifically for signal integrity in harsh industrial environments where signals exceed conventional supply boundaries.
FAQ
What is the maximum analog signal voltage the MAX14759ETA+T can handle?
The MAX14759ETA+T supports analog signals from -25V to +25V relative to GND, regardless of its +3.0V to +5.5V VCC supply. This capability is enabled by internal charge pumps generating ±27V bias rails. The device maintains 1Ω max on-resistance and 200nA max off-leakage across this full range, making MAX14759ETA+T ideal for RS-485, CAN, and industrial sensor interfaces where transients exceed supply rails.
Does the MAX14759ETA+T require external capacitors, and if so, what values?
Yes, the MAX14759ETA+T requires two external ceramic capacitors: a 0.1µF/50V capacitor between VP and GND, and another 0.1µF/50V capacitor between VN and GND. These stabilize the internal high-voltage charge pumps. A 1µF ceramic capacitor is also required between VCC and GND. All capacitors must be placed as close as possible to their respective pins per the layout guidelines in the MAX14759ETA+T datasheet.
Can the MAX14759ETA+T operate with VCC = 0V while analog signals are present?
Yes, the MAX14759ETA+T tolerates ±25V on A or B pins with VCC = 0V. In this unpowered state, DC input leakage is typically <1µA, though some units may reach low-mA levels due to process variation. Transient currents occur as VP/VN capacitors charge via internal diodes - limiting dv/dt to ≤3V/µs (with 100nF caps) prevents damage. This feature enables safe hot-swap and fail-safe behavior in MAX14759ETA+T-based systems.
What is the thermal shutdown behavior of the MAX14759ETA+T?
The MAX14759ETA+T activates thermal shutdown at +154°C junction temperature and remains latched off until junction temperature falls by 24°C (hysteresis). During shutdown, the switch opens and supply current drops to ~2.5µA. Recovery is automatic once temperature decreases sufficiently. This protects against sustained overload, poor heatsinking, or high ambient conditions - a key reliability feature confirmed in MAX14759ETA+T production testing across -40°C to +85°C.
Is the MAX14759ETA+T pin-compatible with other devices in the MAX147xx family?
No, the MAX14759ETA+T is not pin-compatible with MAX14761ETB+ (10-pin TDFN) or MAX14763ETA+ (8-pin TDFN with different pinout). While all share the same footprint size (3mm × 3mm), MAX14759ETA+T has unique pin assignments: Pin 4 = B, Pin 5 = A, Pin 7 = N.C., Pin 8 = EN. Substituting without PCB revision will cause functional failure. Always verify pin mapping using the MAX14759ETA+T-specific pin configuration diagram.
MAX14759ETA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 1Ohm
- Channel-to-Channel Matching (ΔRon):
- 2.4mOhm
- 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:
- -83dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX14759ETA+T FAQ
1.How can I place an order for MAX14759ETA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14759ETA+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 MAX14759ETA+T reliable?
The price and inventory of MAX14759ETA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14759ETA+T is usually 5 days.
3.What payment methods are accepted for MAX14759ETA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14759ETA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14759ETA+T?
MAX14759ETA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14759ETA+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 MAX14759ETA+T?
For technical support, including MAX14759ETA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14759ETA+T requirements.
6.How does Aetrix verify that MAX14759ETA+T is sourced from the original manufacturer or authorized distributors?
All MAX14759ETA+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 MAX14759ETA+T meets industry standards.
7.What is the process for return or replacement of MAX14759ETA+T?
All MAX14759ETA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14759ETA+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 MAX14759ETA+T part is unused and in its original packaging.
Return procedure for MAX14759ETA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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