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Analog Devices Inc./Maxim Integrated MAX4721EBL+T
- Part No.:
- MAX4721EBL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX4721EBL+T.pdf
- Description:
- IC SWITCH SPST-NOX2 4.5OHM 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:5,700
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Product details
Overview
MAX4721EBL+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 at +2.7V, and supports rail-to-rail analog signal handling up to V+. It is used in portable audio multiplexing and USB data path switching where low distortion and high off-isolation are critical.
For engineers reviewing the MAX4721EBL+T datasheet, MAX4721EBL+T pinout, MAX4721EBL+T application, or MAX4721EBL+T equivalent, this page provides verified electrical parameters, UCSP-9 package layout, USB-compliant timing behavior, leakage performance at temperature extremes, and real-world selection guidance against functionally comparable analog switches.
Technical Context
The MAX4721EBL+T implements two independent normally open (NO) SPST switches using BiCMOS process technology. Its break-before-make switching action (1ns delay) prevents signal shorting during state transitions, and its <2ns differential skew ensures matched channel timing for differential signal paths. The device guarantees operation across –40°C to +85°C with full characterization at both +3V and +5V supplies.
It features rail-to-rail input and output voltage capability, +1.8V logic-compatible digital inputs (VIH = 1.4V min at +3V), and bidirectional analog signal flow. On-channel capacitance is 15pF, off-isolation reaches –55dB at 10MHz, and crosstalk is –80dB at same frequency - all enabling clean USB 1.1 (12Mbps) and audio-band signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (max) | 4.5Ω at +3V supply - ensures minimal signal attenuation and voltage drop in low-voltage audio/USB paths |
| RON matching (max) | 0.3Ω between channels at +3V - enables precise amplitude tracking in dual-channel applications like stereo routing |
| Turn-off time (tOFF) | <40ns at +2.7V - supports fast switching in time-critical multiplexing without signal glitches |
| Off-isolation | –55dB at 10MHz - suppresses coupling between inactive and active signal paths in dense PCB layouts |
| Analog signal range | 0V to V+ - allows full-rail signal transmission without clipping in battery-powered systems |
| Logic compatibility | +1.8V CMOS inputs with VIH = 1.4V min at +3V - interfaces directly with low-voltage microcontrollers and FPGAs |
| Leakage current | <0.5nA at +25°C - preserves signal integrity in high-impedance sample-and-hold or sensor front-ends |
Pinout & Package
The MAX4721EBL+T is housed in a 1.52mm × 1.52mm chip-scale package (UCSP-9) with 3×3 bump array and 0.5mm bump pitch. This ultra-compact footprint reduces board area by >70% versus 8-pin µMAX alternatives while maintaining thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Digital control input | Active-high logic inputs controlling respective NO switches; compatible with +1.8V to +5.5V logic levels regardless of V+ supply |
| COM1, COM2 | Analog common terminal | Bidirectional analog node - connects to source or load depending on signal direction; handles rail-to-rail voltages |
| NO1, NO2 | Analog normally open terminal | Open-circuit when INx = low; closed to COMx when INx = high - forms two independent SPST paths |
| V+ | Positive supply | Single analog/digital supply input (1.8V–5.5V); powers internal circuitry and defines analog signal ceiling |
| GND | Ground reference | Digital and analog ground return; must be low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| USB 1.1 compliance | Guaranteed <2ns differential skew and <80ns tON at +2.7V - meets timing margin requirements for 12Mbps full-speed USB signaling |
| Rail-to-rail signal handling | Supports analog signals from GND to V+ - eliminates level-shifting in single-supply portable systems |
| Low on-capacitance | 15pF typical - minimizes bandwidth degradation and phase shift in high-frequency audio and data paths |
| Break-before-make switching | 1ns guaranteed tBBM - prevents momentary short-circuit between channels during transition |
| Low THD | 0.03% at audio frequencies - preserves fidelity in headphone amplifiers and line-level audio routing |
Applications
| USB 1.1 Data Switching | Portable Audio Multiplexing |
|---|---|
Use Scenario: Routing USB D+ and D– lines between host controller and multiple peripheral ports in compact docking stations. IC Role / Device Role / Timing Role: Dual SPST switch providing isolated, low-skew signal paths with guaranteed break-before-make timing to prevent bus contention. Use Value: Enables seamless USB port sharing without violating USB 1.1 timing specs or introducing signal integrity loss due to RON mismatch or crosstalk. |
Use Scenario: Selecting between microphone input and line-in sources in Bluetooth earbuds or voice-controlled wearables. IC Role / Device Role / Timing Role: Low-leakage, rail-to-rail analog switch handling bidirectional audio signals with minimal distortion and no DC blocking capacitors required. Use Value: Maintains SNR >95dB and THD <0.03% across 20Hz–20kHz while operating from 1.8V battery supply - extends runtime and preserves audio quality. |
| Low-Voltage Data Acquisition | Sample-and-Hold Signal Gating |
Use Scenario: Multiplexing sensor outputs (e.g., thermistor, accelerometer) into a shared ADC input in IoT edge nodes powered by coin cells. IC Role / Device Role / Timing Role: Precision analog switch with 0.3Ω RON match and <0.5nA leakage - ensures consistent gain and offset across channels. Use Value: Eliminates inter-channel gain error drift and reduces system calibration burden, enabling 12-bit effective resolution without per-channel trimming. |
Use Scenario: Isolating hold capacitor from input during acquisition phase in precision instrumentation amplifiers. IC Role / Device Role / Timing Role: Fast-switching SPST gate with <40ns tOFF and <15pF CON - minimizes charge injection (<5pC) and aperture uncertainty. Use Value: Limits sampling error to <0.05% FS at 100ksps, supporting accurate DC-coupled measurements in medical and test equipment. |
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 |
|---|---|---|---|
| MAX4722EBL+T | Two normally closed (NC) switches instead of NO; identical RON, timing, and package | Suitable for fail-safe default-closed paths (e.g., always-on bias networks), not direct functional replacement for NO configuration | Select only if circuit requires NC behavior - pinout and logic polarity differ despite identical UCSP-9 footprint |
| TMUX1574RSVR | 4.2Ω RON max at 3V, but higher 25pF CON; supports 5.5V supply and 100mA continuous current | Better power handling and wider supply range, but lower bandwidth due to higher capacitance - less suitable for USB 1.1 | Prefer for industrial sensor muxing where robustness matters more than USB timing; not drop-in for USB/audio due to skew and bandwidth limits |
Compared with MAX4722EBL+T and TMUX1574RSVR, the MAX4721EBL+T uniquely balances USB 1.1 timing compliance, ultra-low on-capacitance, and sub-0.5nA leakage - making it optimal for portable, battery-sensitive, high-fidelity analog routing where signal integrity is non-negotiable.
Availability
MAX4721EBL+T is available at Aetrix Electronics and suitable for USB 1.1 interface modules, portable audio subsystems, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4721EBL+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 precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications. Its portfolio emphasizes low-power, high-integration solutions with rigorous reliability validation.
The MAX4721EBL+T belongs to Maxim's high-performance analog switch family targeting USB, audio, and portable instrumentation. These devices were engineered specifically for rail-to-rail, low-RON, and low-distortion signal routing in space-constrained, battery-operated systems.
FAQ
What is the maximum supply voltage rating for MAX4721EBL+T?
The MAX4721EBL+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 and invalidates parametric guarantees. For reliable long-term use, maintain V+ within 1.8V–5.5V and observe derating curves above +70°C ambient.
Does MAX4721EBL+T support bidirectional analog signal flow?
Yes, the MAX4721EBL+T supports fully bidirectional analog signal routing. Both COM1/COM2 and NO1/NO2 terminals handle signals equally well in either direction, with identical RON, leakage, and capacitance characteristics - a key requirement for audio line switching and sensor multiplexing where signal direction may vary.
Can MAX4721EBL+T be used in USB 2.0 applications?
No, the MAX4721EBL+T is specified and characterized only for USB 1.1 (12Mbps) compliance. Its –55dB off-isolation at 10MHz and >300MHz –3dB bandwidth are insufficient for USB 2.0's 480Mbps signaling, which demands >45dB isolation at 240MHz and sub-1ns skew - use dedicated USB 2.0 switches like MAX3353 instead.
What is the thermal limit for reflow soldering of the UCSP-9 package in MAX4721EBL+T?
The MAX4721EBL+T UCSP-9 package requires strict adherence to JEDEC J-STD-020A profile: infrared reflow max bump temperature is +220°C (15s), vapor-phase max is +215°C (60s). Preheating is mandatory; hand or wave soldering is prohibited. Exceeding these limits risks die attach failure or bump fracture.
How does MAX4721EBL+T achieve rail-to-rail signal handling?
The MAX4721EBL+T achieves rail-to-rail analog operation through proprietary BiCMOS switch architecture that extends the conduction range of internal MOSFETs down to GND and up to V+, eliminating body-diode conduction and threshold voltage limitations. This allows signals from 0V to V+ to pass with <1.2Ω RFLAT(ON) variation across the full range.
MAX4721EBL+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:
- 9-WLP
MAX4721EBL+T FAQ
1.How can I place an order for MAX4721EBL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4721EBL+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 MAX4721EBL+T reliable?
The price and inventory of MAX4721EBL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4721EBL+T is usually 5 days.
3.What payment methods are accepted for MAX4721EBL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4721EBL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4721EBL+T?
MAX4721EBL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4721EBL+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 MAX4721EBL+T?
For technical support, including MAX4721EBL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4721EBL+T requirements.
6.How does Aetrix verify that MAX4721EBL+T is sourced from the original manufacturer or authorized distributors?
All MAX4721EBL+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 MAX4721EBL+T meets industry standards.
7.What is the process for return or replacement of MAX4721EBL+T?
All MAX4721EBL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4721EBL+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 MAX4721EBL+T part is unused and in its original packaging.
Return procedure for MAX4721EBL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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