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Analog Devices Inc./Maxim Integrated MAX4739EUD+
- Part No.:
- MAX4739EUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4739EUD+.pdf
- Description:
- IC INTEGRATED CIRCUIT
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Inventory:3,896
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Product details
Overview
MAX4739EUD+ from Maxim Integrated is a quad SPST analog switch with two normally open (NO) and two normally closed (NC) channels, designed for USB 1.1 signal routing and low-voltage audio switching. It delivers 4.5Ω max on-resistance at +3V, <40ns turn-off time, and −80dB crosstalk at 10MHz in a 14-pin TSSOP package rated for −40°C to +85°C operation.
For engineers reviewing the MAX4739EUD+ datasheet, MAX4739EUD+ pinout, MAX4739EUD+ application, or MAX4739EUD+ equivalent, this device is selected for high-fidelity analog path control where rail-to-rail signal handling, sub-2ns differential skew, and guaranteed break-before-make timing are critical in portable USB/audio systems.
Technical Context
The MAX4739EUD+ implements a CMOS-based quad SPST architecture with dedicated NO/NC channel pairing per switch-IN1 controls NO1/NC2, IN2 controls NO2/NC4, IN3 controls NO3/NC1, and IN4 controls NO4/NC3-enabling independent bidirectional signal routing. Its break-before-make timing (8ns typ at +25°C) prevents momentary shorting during state transitions.
It supports rail-to-rail analog signals (0V to V+) and +1.8V logic-compatible digital inputs across its full +1.8V to +5.5V supply range. At +3V, it achieves 15pF on-capacitance, 20pF off-capacitance, and 0.03% THD-key for preserving signal integrity in 12Mbps USB full-speed data paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 4.5Ω at +3V supply - ensures minimal voltage drop and power loss in low-voltage analog paths |
| Break-Before-Make Delay | 8ns typical at +25°C - guarantees no overlap between NO and NC conduction, preventing signal contention |
| Crosstalk (10MHz) | −80dB - isolates adjacent channels to prevent audible noise or data corruption in multi-signal routing |
| Turn-Off Time (max) | 40ns at +2.7V - enables fast channel switching for dynamic signal reconfiguration |
| Supply Voltage Range | +1.8V to +5.5V - supports direct integration into battery-powered (1.8V/3.3V) and mixed-supply systems |
| Leakage Current (max) | ±1nA at TMIN to TMAX - preserves accuracy in high-impedance sample-and-hold or sensor interfaces |
| -3dB Bandwidth | >300MHz - maintains fidelity of USB 1.1 (12Mbps) and audio-band signals without attenuation |
Pinout & Package
MAX4739EUD+ is housed in a 14-pin TSSOP package (package code U14+1), measuring 5.0mm × 4.4mm × 1.1mm, with standard 0.65mm lead pitch and RoHS-compliant matte tin plating.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply input - must be bypassed with 0.1µF capacitor to GND for stable switching performance |
| 2 | IN1 | Digital control input for NO1/NC2 - accepts +1.8V logic levels regardless of V+ (up to +5.5V tolerant) |
| 3 | IN4 | Digital control input for NO4/NC3 - enables independent activation of fourth switch pair |
| 4 | NO4 | Analog output terminal of fourth NO switch - connects to COM4 when IN4 = HIGH |
| 5 | COM4 | Common analog node for fourth switch - bidirectional path between NO4 and NC4 |
| 6 | COM3 | Common analog node for third switch - shared path for NO3 (IN3 = HIGH) or NC3 (IN3 = LOW) |
| 7 | NO3 | Analog output terminal of third NO switch - active only when IN3 = HIGH |
| 8 | COM2 | Common analog node for second switch - routes signal to NO2 or NC2 based on IN2 state |
| 9 | NO2 | Analog output terminal of second NO switch - activated by HIGH on IN2 |
| 10 | COM1 | Common analog node for first switch - central connection point for NO1/NC2 pair |
| 11 | NO1 | Analog output terminal of first NO switch - conducts when IN1 = HIGH |
| 12 | GND | Digital ground reference - must be connected to system ground plane for noise immunity |
| 13 | IN3 | Digital control input for NO3/NC1 - controls third switch pair with inverse logic for NC1 |
| 14 | IN2 | Digital control input for NO2/NC4 - completes four-channel independent control set |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 8ns min tBBM at +25°C - eliminates signal shorting during channel transitions in USB/audio multiplexing |
| Rail-to-rail analog signal handling | 0V to V+ range supported - enables full-swing signal routing without clipping in single-supply systems |
| Low on-capacitance | 15pF typical - minimizes loading on high-frequency sources and preserves bandwidth in RF/audio paths |
| USB 1.1 compliance | Verified <2ns propagation delay and <0.5ns skew change at 12Mbps - meets full-speed USB timing margins |
| +1.8V logic compatibility | VIH = 1.4V / VIL = 0.5V at +3V supply - interoperates with low-voltage microcontrollers without level shifters |
Applications
| USB 1.1 Peripheral Switching | Portable Audio Signal Routing |
|---|---|
Use Scenario: Dynamic selection between multiple USB upstream ports in a hub or docking station. IC Role / Device Role / Timing Role: Quad SPST analog switch providing isolated, low-distortion data path switching with break-before-make timing. Use Value: Maintains 12Mbps signal integrity with <2ns skew and >300MHz bandwidth while preventing bus contention. |
Use Scenario: Selecting between headphone outputs, line-in, and microphone inputs in smartphones or wearables. IC Role / Device Role / Timing Role: Low-RON, low-THD analog switch enabling clean audio path reconfiguration without pop/click artifacts. Use Value: 4.5Ω RON and 0.03% THD preserve SNR; 20pF off-capacitance minimizes crosstalk between sensitive audio channels. |
| Battery-Powered Data Acquisition | Sample-and-Hold Circuit Switching |
Use Scenario: Multiplexing sensor inputs (e.g., thermistor, accelerometer) into a low-power ADC in IoT edge nodes. IC Role / Device Role / Timing Role: Low-leakage (<1nA), rail-to-rail analog switch enabling accurate DC-coupled signal acquisition. Use Value: ±1nA leakage ensures <0.1% gain error in high-impedance sensor bridges; 1.8V operation extends battery life. |
Use Scenario: Isolating hold capacitors from input sources during sampling phase in precision instrumentation ADCs. IC Role / Device Role / Timing Role: Fast-switching (tOFF <40ns), low-charge-injection (5pC) analog switch minimizing sampling error. Use Value: 5pC charge injection reduces aperture uncertainty; 40ns tOFF enables tight sampling window control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4737EUD+ | Four NO-only switches; no NC functionality; identical RON, bandwidth, and timing specs | Suitable only where all four paths require normally-open behavior (e.g., simple signal enable) | Select MAX4737EUD+ when full NO configuration suffices and NC capability is unnecessary |
| MAX4738EUD+ | Four NC-only switches; complementary logic sense; same electrical performance | Used in fail-safe or default-connected configurations (e.g., mute-on-power-loss audio paths) | Choose MAX4738EUD+ for designs requiring default-closed analog paths with active-high disable |
Compared with MAX4739EUD+, MAX4737EUD+ offers pure NO switching without NC capability, while MAX4738EUD+ provides NC-only operation-both share identical speed, RON, and USB 1.1 compliance but lack the mixed NO/NC flexibility essential for bidirectional signal arbitration.
Availability
MAX4739EUD+ is available at Aetrix Electronics and suitable for USB peripheral switching, portable audio routing, battery-powered data acquisition, and sample-and-hold circuit design requiring stable component supply across industrial and consumer production cycles.
Supply support for MAX4739EUD+ 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 consumer applications.
The MAX4737/MAX4738/MAX4739 family was engineered for low-voltage, high-fidelity analog signal routing-specifically targeting USB 1.1 compliance, audio path switching, and portable equipment where size, power, and signal integrity are critical.
FAQ
What is the maximum supply voltage rating for MAX4739EUD+?
The MAX4739EUD+ is rated for continuous operation from +1.8V to +5.5V. Absolute maximum ratings specify V+ up to +6.0V, but functional operation beyond +5.5V is not guaranteed. For reliable long-term performance, maintain V+ within the 1.8V–5.5V range as specified in the Electrical Characteristics table.
Does MAX4739EUD+ support rail-to-rail analog signal switching?
Yes, MAX4739EUD+ supports rail-to-rail analog signal handling from 0V to V+. This allows full-swing signal routing without clipping in single-supply systems, verified across the entire operating temperature range (−40°C to +85°C) and supply voltages.
How does the break-before-make timing work in MAX4739EUD+?
MAX4739EUD+ guarantees break-before-make operation with a minimum tBBM of 8ns at +25°C. This ensures the NC path opens before the NO path closes during logic transitions, eliminating momentary shorts-critical for USB data line integrity and audio path safety.
Is MAX4739EUD+ compatible with +1.8V logic inputs?
Yes, MAX4739EUD+ accepts +1.8V logic-compatible inputs: VIH = +1.4V (min) and VIL = +0.5V (max) when V+ = +2.7V to +3.6V. Its inputs tolerate up to +5.5V regardless of supply, enabling mixed-voltage system interfacing without external level shifters.
What is the on-resistance matching specification for MAX4739EUD+?
MAX4739EUD+ specifies ∆RON ≤ 0.4Ω (max) at +3V supply and TMIN to TMAX. This channel-to-channel on-resistance matching ensures consistent gain and signal level across all four switched paths-essential for balanced audio and precision multiplexing.
MAX4739EUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX4739EUD+ FAQ
1.How can I place an order for MAX4739EUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4739EUD+ 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 MAX4739EUD+ reliable?
The price and inventory of MAX4739EUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4739EUD+ is usually 5 days.
3.What payment methods are accepted for MAX4739EUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4739EUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4739EUD+?
MAX4739EUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4739EUD+ 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 MAX4739EUD+?
For technical support, including MAX4739EUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4739EUD+ requirements.
6.How does Aetrix verify that MAX4739EUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4739EUD+ 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 MAX4739EUD+ meets industry standards.
7.What is the process for return or replacement of MAX4739EUD+?
All MAX4739EUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4739EUD+, 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 MAX4739EUD+ part is unused and in its original packaging.
Return procedure for MAX4739EUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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