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Analog Devices Inc./Maxim Integrated MAX14759ETA+
- Part No.:
- MAX14759ETA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX14759ETA+.pdf
- Description:
- IC SWITCH SPST-NO X 1 1OHM 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,907
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Product details
Overview
MAX14759ETA+ from Maxim Integrated is a single-pole/single-throw (SPST) analog switch designed for bipolar signal routing beyond supply rails. It operates from +3.0V to +5.5V, supports ±25V analog signals, delivers ≤1Ω on-resistance at 500mA, and features thermal shutdown protection and 2kV HBM ESD rating - enabling robust RS-485 termination switching in industrial instrumentation.
For engineers reviewing the MAX14759ETA+ datasheet, MAX14759ETA+ pinout, MAX14759ETA+ application, or MAX14759ETA+ equivalent, key selection criteria include rail-to-rail signal handling capability, low RON flatness (2.4mΩ typ), -40°C to +85°C operation, and TDFN-8 package compatibility with high-density PCB layouts.
Technical Context
The MAX14759ETA+ integrates three charge pumps (5V regulated, +35V, and -27V) to bias internal switches, enabling true above- and below-the-rails conduction without external high-voltage supplies. Its architecture supports bidirectional current flow with guaranteed ≤1Ω on-resistance across the full -25V to +25V input range.
Signal integrity is maintained via 100MHz bandwidth, -77dB off-isolation at 100kHz, and 1370pC charge injection - critical for precision analog multiplexing and audio routing where distortion and crosstalk must be minimized in mixed-signal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +3.0V to +5.5V - enables direct interface with common logic and microcontroller I/O without level-shifting. |
| Analog Signal Range | ±25V - allows safe switching of industrial sensor outputs, RS-485 common-mode voltages, and audio line-level signals without clipping or damage. |
| On-Resistance (RON) | ≤1Ω max at ±25V, 500mA - ensures minimal voltage drop and power loss in high-current termination paths. |
| RON Flatness | 2.4mΩ typ - maintains consistent gain and linearity across full signal swing, essential for measurement accuracy. |
| Switch Current Rating | ±500mA continuous - supports heavy-load termination resistors and fail-safe bias networks in RS-485/CAN bus designs. |
| Thermal Shutdown Threshold | +154°C with 24°C hysteresis - provides autonomous overtemperature protection during sustained high-current operation. |
| ESD Rating | ±2kV HBM - protects against electrostatic discharge during board handling and field deployment in unshielded environments. |
Pinout & Package
MAX14759ETA+ is housed in an 8-pin (3mm × 3mm) TDFN-EP package with exposed pad connected to VN. The compact footprint supports high-density routing while enabling efficient thermal dissipation via VN-connected EP.
| 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 digital control and analog signal ground planes. |
| VN | Negative voltage output | Generated by internal -27V charge pump; bypassed with 0.1µF/50V capacitor; connects to exposed pad. |
| B | Analog common terminal | Current path shared between A and B; bidirectional - functions as input or output depending on signal direction. |
| A | Analog normally open terminal | Open-circuit when EN = low; closed to B when EN = high; rated for ±25V, ±500mA. |
| VP | Positive voltage output | Generated by internal +35V charge pump; bypassed with 0.1µF/50V capacitor; not for external load sourcing. |
| N.C. | No connection | Unbonded pin - must remain floating; no PCB trace or solder mask opening required. |
| EN | Enable control input | Active-high logic interface; TTL/CMOS compatible; drives switch closed when ≥1.7V (VCC = 3.0V). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal switching | Supports -25V to +25V analog signals with ≤1Ω RON, eliminating need for external level shifters or dual-supply circuitry. |
| Integrated triple charge pump | Generates internal ±35V bias rails from single 3.0–5.5V supply - removes requirement for external high-voltage generators. |
| Thermal shutdown protection | Autonomous +154°C cutoff with 24°C hysteresis prevents latch-up or permanent damage during overload conditions. |
| Low leakage performance | ≤250nA on-leakage and ≤100nA off-leakage ensure minimal signal corruption in high-impedance sensor and medical front-end applications. |
| High-bandwidth analog path | 100MHz -3dB bandwidth and -83dB crosstalk enable clean routing of audio, video, and fast digital signals without degradation. |
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: SPST analog switch controlling termination resistor path; EN pin synchronized with transceiver enable to avoid signal reflections during hot-plug events. Use Value: Eliminates manual jumper configuration and reduces bill-of-materials by replacing mechanical relays or discrete MOSFET arrays with a single 3mm × 3mm IC. | Use Scenario: Selectively applying 120Ω termination across CANH/CANL lines in automotive body control modules where bus segments are reconfigured on-the-fly. IC Role / Device Role / Timing Role: Bidirectional analog switch placed in series with termination resistor; withstands CAN's -7V to +12V common-mode range without clamping or distortion. Use Value: Enables software-controlled bus segmentation and fault isolation while maintaining ISO 11898-2 compliance under all operating conditions. |
| Opto-Relay Replacement | Industrial Measurement Multiplexing |
Use Scenario: Replacing electromechanical relays in programmable logic controller (PLC) I/O modules for dry-contact simulation and signal path selection. IC Role / Device Role / Timing Role: Solid-state SPST switch providing galvanically isolated signal routing via charge-pump-generated bias - no coil drive circuitry or bounce mitigation needed. Use Value: Achieves >100M cycle lifetime, sub-microsecond switching, and zero contact wear versus typical 100k-cycle relay lifespan. | Use Scenario: Multiplexing multiple ±10V sensor outputs (e.g., strain gauges, RTDs) into a single ADC channel in portable test equipment. IC Role / Device Role / Timing Role: Precision analog switch with 2.4mΩ RON flatness ensuring <0.01% gain error across full input range during channel scanning. Use Value: Maintains measurement accuracy without per-channel calibration while reducing system size and power consumption vs. op-amp-based mux solutions. |
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 control; 2Ω max RON; same 8-pin TDFN package and ±25V signal range. | Supports source selection (A1/A2 → COM) rather than simple on/off switching; requires different control logic. | Select MAX14763ETA+ when dual-input routing is required; MAX14759ETA+ remains optimal for single-path enable/disable functions. |
| ADG1419BRMZ | Single SPST switch; 1.3Ω max RON; ±15V signal range; requires dual ±15V supplies or external charge pump. | Lacks integrated rail-to-rail bias generation - cannot handle ±25V signals without external support circuitry. | Choose ADG1419BRMZ only if system already provides ±15V rails and lower signal range suffices; MAX14759ETA+ eliminates external supply complexity. |
Compared with MAX14763ETA+, MAX14759ETA+ offers lower RON and simpler enable control for basic termination tasks; compared with ADG1419BRMZ, it delivers wider signal range and self-contained biasing - reducing BOM count and layout area in space-constrained industrial designs.
Availability
MAX14759ETA+ is available at Aetrix Electronics and suitable for RS-485 termination switching, CAN bus configuration, and opto-relay replacement requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX14759ETA+ 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 high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The MAX14759ETA+ belongs to Maxim's rail-to-rail analog switch product line, engineered specifically for industrial communication interfaces where signal integrity, wide voltage tolerance, and integration of bias generation are critical design requirements.
FAQ
What is the maximum continuous current rating for the MAX14759ETA+?
The MAX14759ETA+ supports ±500mA continuous current through its switch path under specified operating conditions. This rating applies across the full -25V to +25V analog signal range and is validated at TA = -40°C to +85°C. Exceeding this current may trigger thermal shutdown at +154°C, and sustained operation near the limit requires proper PCB copper pour and thermal vias to VN.
Does the MAX14759ETA+ require external capacitors, and if so, what values?
Yes, the MAX14759ETA+ requires three external bypass capacitors: a 1µF ceramic capacitor between VCC and GND, and 0.1µF/50V ceramic capacitors between VP and GND and between VN and GND. These stabilize the internal charge pumps and prevent oscillation or excessive noise coupling. The VN capacitor must connect directly to the exposed pad, which is electrically tied to VN.
Can the MAX14759ETA+ operate with analog signals when unpowered?
Yes, the MAX14759ETA+ tolerates ±25V on A and B pins even when VCC = 0V. In this nonpowered state, DC input leakage is typically <1µA, though technology spread may allow up to ~1mA transiently due to internal diode charging of VP/VN capacitors. To avoid damaging internal diodes, dv/dt on analog inputs must be limited to ≤3V/µs when VP/VN capacitors are 100nF.
What is the function of the N.C. pin on the MAX14759ETA+?
The N.C. (No Connection) pin on the MAX14759ETA+ is an unbonded pin with no internal connection. It must remain electrically floating - no trace, solder mask opening, or grounding is permitted. Leaving it unconnected ensures correct internal bias distribution and avoids unintended parasitic coupling that could degrade RON flatness or increase leakage.
How does the MAX14759ETA+ achieve rail-to-rail signal switching with a single 3.0V–5.5V supply?
The MAX14759ETA+ achieves rail-to-rail switching using three integrated charge pumps: a 5V regulated pump, a +35V pump, and a -27V pump. These generate internal bias voltages that fully enhance the NMOS and PMOS transistor pairs in the switch core, allowing conduction of signals from -25V to +25V regardless of the 3.0V–5.5V VCC level. No external high-voltage supplies are needed.
MAX14759ETA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Strip
- Product Status:
- Discontinued at Digi-Key
- 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+ FAQ
1.How can I place an order for MAX14759ETA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14759ETA+ 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+ reliable?
The price and inventory of MAX14759ETA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14759ETA+ is usually 5 days.
3.What payment methods are accepted for MAX14759ETA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14759ETA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14759ETA+?
MAX14759ETA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14759ETA+ 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+?
For technical support, including MAX14759ETA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14759ETA+ requirements.
6.How does Aetrix verify that MAX14759ETA+ is sourced from the original manufacturer or authorized distributors?
All MAX14759ETA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX14759ETA+?
All MAX14759ETA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14759ETA+, 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+ part is unused and in its original packaging.
Return procedure for MAX14759ETA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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