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Analog Devices Inc./Maxim Integrated MAX4721EUA+T
- Part No.:
- MAX4721EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4721EUA+T.pdf
- Description:
- IC SWITCH SPST-NOX2 4.5OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,372
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Product details
Overview
The MAX4721EUA+T from Maxim Integrated is a dual single-pole/single-throw (SPST) analog switch optimized for USB 1.1 and low-voltage audio signal routing. It operates from a single +1.8V to +5.5V supply, delivers 4.5Ω maximum on-resistance at +3V, features <40ns turn-off time, and supports rail-to-rail analog signal handling up to the supply rails.
For engineers reviewing the MAX4721EUA+T datasheet, MAX4721EUA+T pinout, MAX4721EUA+T application, or MAX4721EUA+T equivalent, this device is selected for high-fidelity, low-distortion switching in battery-powered audio interfaces, USB full-speed data paths, and compact portable instrumentation where low RON, minimal charge injection (<5pC), and sub-2ns differential skew are critical.
Technical Context
The MAX4721EUA+T implements two independent normally open (NO) SPST switches using BiCMOS process technology. Its architecture ensures matched channel performance (≤0.3Ω RON match at +3V) and flat on-resistance (≤1.2Ω variation) across the full analog input range (GND to V+).
It employs break-before-make switching with 1ns delay (MAX4723 only - not applicable), but MAX4721EUA+T guarantees tON <80ns and tOFF <40ns at +2.7V, while maintaining CMOS logic compatibility down to +1.8V input thresholds and supporting bidirectional signal flow without polarity constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - enables direct integration into Li-ion–powered systems and mixed-voltage 3.3V/5V boards without level shifters. |
| Max On-Resistance (RON) | 4.5Ω at +3V - preserves signal integrity in audio and USB 1.1 paths by minimizing insertion loss and THD (0.03% typical). |
| RON Match Between Channels | 0.3Ω max at +3V - ensures balanced gain and phase response in stereo or differential signal routing. |
| Turn-Off Time (tOFF) | <40ns at +2.7V - supports fast switching in sample-and-hold and multiplexed data acquisition systems. |
| On-Channel Capacitance | 15pF - limits bandwidth degradation and crosstalk (-80dB at 10MHz) in high-frequency analog routing. |
| Leakage Current (ICOM_(ON)) | <2nA at +85°C - maintains accuracy in precision sensor front-ends and low-power standby modes. |
| -3dB Bandwidth | >300MHz - accommodates USB 1.1 full-speed (12Mbps) signals with negligible edge distortion. |
Pinout & Package
The MAX4721EUA+T is housed in an 8-pin µMAX package (3.05mm × 3.05mm, 0.65mm pitch), with exposed pad for thermal enhancement. Pin 1 is top-left corner (marked dot), and pin numbering follows standard counter-clockwise orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Analog Supply | Single power rail for analog and digital sections; requires 0.1µF bypass capacitor to GND for noise immunity. |
| IN1, IN2 | Digital Control Inputs | CMOS-compatible inputs accepting logic levels up to +5.5V regardless of V+; drive internal gate control for respective switches. |
| COM1, COM2 | Analog Common Terminals | Bidirectional signal ports - connect to source or load depending on system topology; support rail-to-rail voltage swing. |
| NO1, NO2 | Analog Normally Open Terminals | Open-circuit when INx = low; closed to COMx when INx = high - defines MAX4721's dual-NO configuration. |
| GND | Digital Ground Reference | Return path for logic inputs and substrate bias; must be tied to system ground plane with low-inductance connection. |
Key Features
| Feature | Design Value |
|---|---|
| USB 1.1 Signal Switching | Fully compliant with 12Mbps full-speed signaling, delivering <2ns differential skew and <5pC charge injection to prevent data corruption. |
| Rail-to-Rail® Signal Handling | Supports analog signals from GND to V+ without clipping or increased RON, enabling use in unipolar sensor interfaces and audio line drivers. |
| Low Distortion Performance | 0.03% THD at audio frequencies - critical for high-fidelity headphone amplifiers and microphone preamp signal routing. |
| Low Leakage & High Off-Isolation | <0.5nA leakage at +25°C and -55dB off-isolation at 10MHz - ensures channel separation in multi-source audio mixers and isolated data-acquisition channels. |
| +1.8V Logic Compatibility | VIH = +1.4V / VIL = +0.5V at +3V supply - allows direct interfacing with ultra-low-voltage microcontrollers and FPGA I/O banks. |
Applications
| USB Full-Speed Data Routing | Portable Audio Signal Switching |
|---|---|
Use Scenario: Selecting between two USB upstream ports in a dual-host docking station or OTG-capable smartphone accessory. IC Role / Device Role: Dual-NO analog switch isolating D+ and D- lines while preserving signal integrity and timing margins. Use Value: Enables seamless host/device role switching without signal degradation, meeting USB 1.1 eye diagram requirements at 12Mbps. | Use Scenario: Routing line-level stereo signals between headphone output, speaker amplifier, and external DAC in a Bluetooth-enabled portable speaker. IC Role / Device Role: Low-RON, low-capacitance analog switch managing bidirectional audio paths with minimal crosstalk (-80dB). Use Value: Maintains THD <0.03% and wideband frequency response (>300MHz), ensuring transparent audio reproduction across all sources. |
| Low-Voltage Data Acquisition | Sample-and-Hold Circuit Switching |
Use Scenario: Multiplexing eight thermistor or RTD sensor inputs into a single 16-bit ADC in a handheld medical monitor. IC Role / Device Role: Precision analog switch providing matched RON (≤0.3Ω) and low leakage (<2nA) to minimize gain/offset errors. Use Value: Delivers stable offset and gain tracking across temperature (-40°C to +85°C), supporting ≤0.1% measurement accuracy. | Use Scenario: Isolating the hold capacitor from input source during sampling phase in a 1Msps SAR ADC front-end. IC Role / Device Role: Fast-switching (tOFF <40ns), low-charge-injection (5pC) switch minimizing droop and pedestal error. Use Value: Reduces aperture uncertainty and settling error, enabling accurate 12-bit+ conversion at high throughput rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4722EUA+T | Dual normally closed (NC) configuration instead of NO; identical RON, timing, and supply specs. | Suitable where default-closed signal path is required (e.g., fail-safe mute circuits), not drop-in replaceable for MAX4721EUA+T. | Select MAX4722EUA+T only when NC behavior is explicitly needed; pinout and footprint are identical but logic polarity is inverted. |
| TMUX1574DRYR | 4.2Ω RON (typ) at 3.3V, 1.5pF lower CON, but higher 100pA leakage at +85°C and no UCSP option. | Optimized for high-density PCBs with tighter layout constraints; lacks guaranteed USB 1.1 compliance documentation. | Prefer TMUX1574DRYR for space-constrained designs needing lowest capacitance; verify USB timing margins independently. |
Compared with MAX4722EUA+T and TMUX1574DRYR, the MAX4721EUA+T provides the only dual-NO configuration with documented USB 1.1 compliance, lowest published leakage at temperature extremes, and validated 0.03% THD - making it optimal for portable audio and certified USB peripheral switching.
Availability
MAX4721EUA+T is available at Aetrix Electronics and suitable for USB peripheral design, portable audio equipment, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4721EUA+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4721EUA+T belongs to Maxim's precision analog switch product line, designed specifically for low-RON, low-distortion signal routing in space-constrained, battery-powered systems operating from 1.8V to 5.5V.
FAQ
What is the maximum supply voltage rating for the MAX4721EUA+T?
The MAX4721EUA+T has an absolute maximum supply voltage (V+) of +6.0V, but its specified operational range is +1.8V to +5.5V. Operating beyond +5.5V risks permanent damage per Absolute Maximum Ratings. The device is fully characterized at +3V and +5V, with RON dropping from 4.5Ω (max) at +3V to 3Ω (max) at +5V.
Does the MAX4721EUA+T support bidirectional analog signal flow?
Yes, the MAX4721EUA+T supports fully bidirectional analog signal routing on all COM/NO paths. Its CMOS-based switch architecture imposes no polarity restrictions - signals can pass from COM to NO or NO to COM with identical RON, capacitance, and distortion characteristics, enabling flexible use in both source- and load-side switching configurations.
What is the logic threshold voltage for the MAX4721EUA+T when powered from a +3.3V supply?
When V+ = +3.3V, the MAX4721EUA+T logic inputs are compatible with standard +3.3V CMOS levels: VIH (input high) is guaranteed ≥+1.4V and VIL (input low) is guaranteed ≤+0.5V. This allows direct interfacing with 3.3V microcontrollers without level translation, and the inputs tolerate up to +5.5V regardless of supply voltage.
How does the MAX4721EUA+T achieve USB 1.1 compliance?
The MAX4721EUA+T achieves USB 1.1 compliance through guaranteed <2ns differential skew, >300MHz -3dB bandwidth, <5pC charge injection, and <40ns tOFF - all measured under USB-relevant conditions (12Mbps data rate, 1.5V signal swing). These parameters ensure signal eye diagrams meet USB specification masks without external equalization or retiming.
Is the MAX4721EUA+T pin-compatible with other devices in the MAX472x family?
Yes, the MAX4721EUA+T shares identical 8-pin µMAX pinout and footprint with MAX4722EUA+T and MAX4723EUA+T. All three devices have the same V+, GND, IN1/IN2, COM1/COM2, and NO1/NO2 (or NC1/NC2) assignments. However, logic polarity and switch type (NO vs. NC) differ - MAX4721EUA+T is dual-NO, so substituting MAX4722EUA+T requires inverting control signals.
MAX4721EUA+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:
- 2
- On-State Resistance (Max):
- 4.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 80ns, 40ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -110dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4721EUA+T FAQ
1.How can I place an order for MAX4721EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4721EUA+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 MAX4721EUA+T reliable?
The price and inventory of MAX4721EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4721EUA+T is usually 5 days.
3.What payment methods are accepted for MAX4721EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4721EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4721EUA+T?
MAX4721EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4721EUA+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 MAX4721EUA+T?
For technical support, including MAX4721EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4721EUA+T requirements.
6.How does Aetrix verify that MAX4721EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4721EUA+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 MAX4721EUA+T meets industry standards.
7.What is the process for return or replacement of MAX4721EUA+T?
All MAX4721EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4721EUA+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 MAX4721EUA+T part is unused and in its original packaging.
Return procedure for MAX4721EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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