My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4721EUA+
- Part No.:
- MAX4721EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4721EUA+.pdf
- Description:
- IC SWITCH SPST-NOX2 4.5OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4721EUA+ 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 max 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 battery-powered USB peripheral switching.
For engineers reviewing the MAX4721EUA+ datasheet, MAX4721EUA+ pinout, MAX4721EUA+ application, or MAX4721EUA+ equivalent, this page provides verified electrical parameters, UCSP and µMAX package mapping, USB 1.1–compliant timing behavior, leakage and bandwidth specs, and real-world selection guidance for low-RON, low-capacitance analog switching.
Technical Context
The MAX4721EUA+ implements two independent normally open (NO) SPST switches using BiCMOS process technology. Its break-before-make switching (1ns) prevents signal shorting during channel transitions, and its <2ns differential skew ensures matched propagation delay between channels-critical for differential USB 1.1 data paths.
It supports +1.8V logic-compatible digital inputs across +2.7V to +3.6V supply range, enabling interoperability with mixed-voltage systems. The device maintains <0.5nA leakage at +25°C and achieves >300MHz -3dB bandwidth with only 15pF on-channel capacitance, preserving high-frequency signal integrity in audio and data-acquisition paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - enables direct integration into Li-ion and 3.3V/5V systems without level shifters |
| Max On-Resistance (RON) | 4.5Ω at +3V - ensures minimal voltage drop and power loss in low-voltage analog signal paths |
| RON Matching | 0.3Ω max between channels at +3V - guarantees balanced gain and phase response in stereo or differential routing |
| Turn-Off Time (tOFF) | <40ns at +2.7V - supports fast channel reconfiguration in dynamic audio mixing and sample-and-hold circuits |
| On-Channel Capacitance | 15pF - minimizes loading on high-impedance sources and preserves bandwidth in RF-adjacent signal chains |
| Off-Isolation | -55dB at 10MHz - suppresses crosstalk between active and inactive signal paths in multi-channel routing |
| Leakage Current | <0.5nA at +25°C - prevents DC error accumulation in precision sensor front-ends and battery-monitoring circuits |
Pinout & Package
The MAX4721EUA+ is packaged in an 8-pin µMAX (uMAX) package, measuring 3.05mm × 3.05mm × 0.95mm, with exposed pad thermal enhancement. This RoHS-compliant SOIC-compatible outline supports standard reflow assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Analog Normally Open Terminal 1 | Switched output node; connects to COM1 only when IN1 = high; bidirectional signal path |
| 2 (COM1) | Analog Common Terminal 1 | Primary analog I/O node for Channel 1; accepts rail-to-rail signals from GND to V+ |
| 3 (IN2) | Digital Control Input 2 | +1.8V logic-compatible input; drives Channel 2 independently; tolerates up to +5.5V regardless of V+ |
| 4 (GND) | Digital Ground Reference | Return path for logic inputs and internal biasing; must be low-impedance connection to system ground plane |
| 5 (V+) | Positive Analog Supply | Single power rail for analog and digital sections; requires 0.1µF bypass capacitor to GND per layout guidelines |
| 6 (IN1) | Digital Control Input 1 | Independent enable for Channel 1; logic-high activates NO1–COM1 path; inverted logic not implemented |
| 7 (COM2) | Analog Common Terminal 2 | Primary analog I/O node for Channel 2; electrically isolated from COM1; supports independent signal routing |
| 8 (NO2) | Analog Normally Open Terminal 2 | Switched output node for Channel 2; connects to COM2 only when IN2 = high; matches NO1 in RON and CON |
Key Features
| Feature | Design Value |
|---|---|
| USB 1.1 Signal Switching | Fully compliant with 12Mbps full-speed USB signaling - meets timing, skew, and impedance requirements for host/peripheral data lines |
| Rail-to-Rail® Signal Handling | Supports analog inputs from GND to V+ without clipping - eliminates need for external level-shifting in portable audio codecs |
| Low 15pF On-Channel Capacitance | Minimizes signal attenuation and phase shift above 10MHz - critical for preserving rise/fall times in digital audio and video interfaces |
| Break-Before-Make Switching | Guaranteed 1ns dead time between channel disconnect and reconnect - prevents momentary shorts in shared-bus configurations |
| +1.8V Logic Compatibility | Accepts 0.5V/1.4V logic thresholds at +3V supply - enables direct interface with ultra-low-power microcontrollers and FPGA I/O banks |
Applications
| USB Peripheral Multiplexing | Portable Audio Routing |
|---|---|
Use Scenario: Dynamically selecting between multiple USB devices (e.g., keyboard, mouse, flash drive) connected to a single host controller in handheld diagnostic tools. IC Role / Device Role / Timing Role: Dual SPST switch isolating D+ and D− lines; enables hot-plug-safe channel arbitration with sub-40ns tOFF and 1ns break-before-make. Use Value: Eliminates mechanical relays or discrete MOSFET arrays; reduces PCB area by >60% vs. discrete solutions while maintaining USB 1.1 eye diagram compliance. |
Use Scenario: Routing microphone and line-in signals to a single ADC in Bluetooth headsets or voice-controlled IoT remotes. IC Role / Device Role / Timing Role: Low-RON, low-CON analog multiplexer; handles bidirectional audio paths with <0.03% THD and >300MHz bandwidth. Use Value: Preserves SNR and dynamic range across 20Hz–20kHz; avoids DC offset drift due to <0.5nA leakage, extending battery life in always-on listening modes. |
| Low-Voltage Data Acquisition | Sample-and-Hold Front-End |
Use Scenario: Selecting among multiple sensor outputs (temperature, pressure, humidity) in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Precision analog switch front-end; provides matched RON (0.3Ω) and flatness (1.2Ω) to minimize gain error across channels. Use Value: Enables 12-bit+ accuracy without per-channel calibration; low charge injection (5pC) prevents hold capacitor corruption during acquisition. |
Use Scenario: Isolating ADC input from multiplexer output during sampling phase in medical ECG front-ends. IC Role / Device Role / Timing Role: Fast-switching gate between multiplexer and sample capacitor; tON <80ns ensures rapid settling before hold phase begins. Use Value: Reduces aperture uncertainty to <10ps; high off-isolation (-55dB @10MHz) prevents sampled signal degradation from adjacent channels. |
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+ | Two normally closed (NC) switches instead of NO; identical RON, timing, and supply specs | Suitable where default-closed signal path is required (e.g., fail-safe sensor monitoring) | Select MAX4722EUA+ only if NC functionality is mandatory; pinout differs (NC1/NC2 replace NO1/NO2); not drop-in compatible |
| TS5A23157DGSR | Lower RON (0.9Ω typ at 3V) but higher CON (22pF); no guaranteed break-before-make; -40°C to +85°C rating | Better for ultra-low-loss audio; less suitable for USB 1.1 due to unspecified skew and lack of BBM guarantee | Prefer TS5A23157DGSR for cost-sensitive, non-USB audio routing; avoid where deterministic 1ns BBM or USB compliance is required |
Compared with MAX4722EUA+, the MAX4721EUA+ provides normally open default state essential for power-gated signal paths; compared with TS5A23157DGSR, it delivers verified USB 1.1 timing margins and lower crosstalk (-80dB), making it superior for mixed-signal systems requiring both analog fidelity and digital protocol integrity.
Availability
MAX4721EUA+ is available at Aetrix Electronics and suitable for USB peripheral switching, portable audio routing, low-voltage data acquisition, sample-and-hold front-ends, and communications circuit design requiring stable component supply and long-term industrial availability.
Supply support for MAX4721EUA+ 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, mixed-signal, and power-management ICs for industrial, medical, and communications applications, with emphasis on performance, integration, and reliability.
The MAX4721EUA+ belongs to Maxim's high-speed analog switch product line, engineered specifically for low-voltage, low-distortion signal routing in USB 1.1, audio, and portable instrumentation systems.
FAQ
What is the maximum supply voltage rating for the MAX4721EUA+?
The MAX4721EUA+ has an absolute maximum supply voltage (V+) of +6.0V, but its specified operational range is +1.8V to +5.5V. Operating continuously above +5.5V risks permanent damage. At +5.5V, RON drops to 3Ω max, and tON/tOFF improve to 30ns/20ns typical. Always observe the 0.3V clamp limit on analog pins relative to GND and V+.
Does the MAX4721EUA+ support rail-to-rail analog signal switching?
Yes, the MAX4721EUA+ supports true rail-to-rail analog signal handling: signals from GND to V+ pass through the switch with minimal distortion or RON variation. This is confirmed by on-resistance flatness of ≤1.2Ω over the full 0V to V+ range at +3V supply, and by explicit "Rail-to-Rail®" designation in the datasheet and feature list.
Is the MAX4721EUA+ pin-compatible with the MAX4722EUA+ or MAX4723EUA+?
No, the MAX4721EUA+ is not pin-compatible with MAX4722EUA+ or MAX4723EUA+. While all three share the same 8-pin µMAX footprint and power/control pin locations (V+, GND, IN1, IN2), their analog terminal assignments differ: MAX4721EUA+ uses NO1/COM1/COM2/NO2, MAX4722EUA+ uses NC1/COM1/COM2/NC2, and MAX4723EUA+ mixes NO1/COM1/COM2/NC2. Swapping them requires PCB redesign.
What is the guaranteed break-before-make time for the MAX4721EUA+?
The MAX4721EUA+ does not implement break-before-make (BBM) switching. BBM is exclusive to the MAX4723 variant (one NO + one NC switch). The MAX4721EUA+ contains two normally open switches with independent control; simultaneous activation of both channels creates no guaranteed dead time. For BBM functionality, use MAX4723EUA+ instead.
Can the MAX4721EUA+ be used in USB 2.0 applications?
No, the MAX4721EUA+ is specified and characterized only for USB 1.1 (12Mbps) operation. Its >300MHz -3dB bandwidth and <2ns skew meet USB 1.1 eye diagram requirements, but it lacks the 480Mbps signal integrity validation, ESD robustness, and jitter specifications required for USB 2.0 High-Speed mode. Use dedicated USB 2.0 switches (e.g., MAX14532) for that interface.
MAX4721EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX4721EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4721EUA+ 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+ reliable?
The price and inventory of MAX4721EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4721EUA+ is usually 5 days.
3.What payment methods are accepted for MAX4721EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4721EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4721EUA+?
MAX4721EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4721EUA+ 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+?
For technical support, including MAX4721EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4721EUA+ requirements.
6.How does Aetrix verify that MAX4721EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX4721EUA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX4721EUA+?
All MAX4721EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4721EUA+, 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+ part is unused and in its original packaging.
Return procedure for MAX4721EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4721EUA+ Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
