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Analog Devices Inc./Maxim Integrated MAX4581AUE+
- Part No.:
- MAX4581AUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4581AUE+.pdf
- Description:
- IC MUX 8:1 80OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,055
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Product details
Overview
The MAX4581AUE+ from Maxim Integrated is an 8-channel CMOS analog multiplexer configured for rail-to-rail signal switching in low-voltage systems. It operates with ±2V to ±6V dual supplies or +2V to +12V single supply, delivers 80Ω on-resistance at ±5V, guarantees ≤1nA off-leakage at +25°C, and supports TTL/CMOS logic compatibility-enabling precise signal routing in battery-powered data-acquisition front-ends.
For engineers reviewing the MAX4581AUE+ datasheet, MAX4581AUE+ pinout, MAX4581AUE+ application, or MAX4581AUE+ equivalent, key selection criteria include guaranteed on-resistance matching across channels, automotive-grade temperature range (-40°C to +125°C), low distortion (<0.02% at 600Ω), high off-isolation (-74dB), and TSSOP-16 package compatibility with legacy 74HC4051 layouts.
Technical Context
The MAX4581AUE+ implements a single 8:1 analog multiplexer architecture using BICMOS process technology, with digital address inputs (A, B, C) and enable control selecting one of eight bidirectional analog paths (X0–X7) to common output X. Its internal logic-level translators isolate digital control signals from analog supply domains (VCC/VEE), enabling operation without ground reference for analog signals.
Switching behavior is characterized by break-before-make timing (4–20ns), low charge injection (0.5–5pC), and flat on-resistance over rail-to-rail input voltage ranges. Performance remains stable across -40°C to +125°C, with leakage currents fully specified and production-tested at maximum operating temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2V to ±6V dual or +2V to +12V single-supports direct integration into mixed-supply systems without level shifters. |
| On-Resistance (RON) | 80Ω max at ±5V-ensures minimal signal attenuation and gain error in precision sensor interfaces. |
| Off-Leakage Current | 1nA max at +25°C-preserves accuracy in high-impedance measurement paths like thermocouple or pH sensor front-ends. |
| On-Leakage Current | 1nA max at +25°C-prevents loading errors when driving high-Z loads such as ADC sample capacitors. |
| Off-Isolation | -74dB at 1MHz (50Ω)-suppresses crosstalk between inactive channels in multi-signal routing applications. |
| THD | <0.02% at 600Ω, 20Hz–20kHz-maintains fidelity for audio and instrumentation signal paths. |
| Logic Thresholds | 0.8V to 2.4V-guarantees robust TTL/CMOS compatibility across full supply range without external biasing. |
Pinout & Package
MAX4581AUE+ is housed in a 16-pin TSSOP package (JEDEC MO-153, 4.4mm × 5.0mm), RoHS-compliant, with exposed pad not present (non-TQFN variant). Pin 1 is X0; pin 16 is VCC; pin 8 is GND; pin 7 is VEE; pin 13 is ENABLE; pins 9–11 are A/B/C address inputs; pin 12 is X; pins 1–6 and 14–15 are X0–X7 analog terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| X0–X7 | Analog input/output terminals | Bidirectional, interchangeable-support signal routing in either direction without polarity constraints. |
| X | Common analog output terminal | Single-pole, 8-throw node-connects selected Xn channel to system signal path. |
| A, B, C | Digital address inputs | 3-bit binary select (CBA = 000 to 111) determines active channel; no internal pull-ups/downs. |
| ENABLE | Active-low digital enable | Drives all switches open when high; enables power-down mode with <1µA supply current. |
| VCC / VEE | Analog/digital supply rails | Set analog signal swing limits; reverse ESD diodes clamp inputs to these rails-no ground reference required. |
| GND | Digital ground reference | Reference only for logic circuitry; analog signals float between VCC and VEE-no analog ground connection needed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Signals swing from VEE to VCC without clipping-enables full dynamic range utilization in single-supply sensor interfaces. |
| Guaranteed RON match | ΔRON ≤ 10Ω across channels-minimizes gain mismatch in multi-channel calibration systems. |
| Automotive temperature grade | -40°C to +125°C operation-qualified for under-hood and ADAS sensor multiplexing without derating. |
| Low distortion & crosstalk | <0.02% THD and <-96dB crosstalk (MAX4582 referenced)-preserves signal integrity in audio/video routing. |
| Pin-compatible with 74HC4051 | Direct drop-in replacement for legacy designs-reduces redesign effort and PCB rework risk. |
Applications
| Industrial Data Acquisition | Automotive Sensor Hub |
|---|---|
Use Scenario: Multiplexing 8 thermistor, RTD, or strain gauge inputs into a single 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: 8:1 analog multiplexer providing channel selection under microcontroller GPIO control. Use Value: 1nA off-leakage prevents measurement drift; 80Ω RON ensures <0.01% gain error at 10kΩ source impedance. | Use Scenario: Consolidating cabin temperature, humidity, CO₂, and seat occupancy sensor outputs in a vehicle climate ECU. IC Role / Device Role / Timing Role: Signal router enabling sequential sampling of multiple analog sensors on shared ADC channel. Use Value: -40°C to +125°C rating ensures reliability in unregulated under-dash environments; ±5V supply compatibility matches automotive analog rails. |
| Portable Medical Instrumentation | Professional Audio Routing |
Use Scenario: Switching ECG electrode leads, respiration transducers, and SpO₂ photodiode outputs in handheld patient monitors. IC Role / Device Role / Timing Role: Low-noise, low-leakage analog switch matrix managing biopotential signal paths before instrumentation amplification. Use Value: <0.02% THD preserves waveform fidelity; rail-to-rail operation accommodates ±2.5V ECG signal swings without clipping. | Use Scenario: Selecting between microphone preamp outputs, line-level sources, and effects returns in digital mixing consoles. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling flexible I/O patching with minimal insertion loss. Use Value: -74dB off-isolation prevents bleed-through between active and muted channels; TSSOP-16 footprint allows dense layout in space-constrained audio PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4581EUE+ | Same functionality and pinout; rated for -40°C to +85°C instead of -40°C to +125°C. | Suitable for industrial but not under-hood automotive use; lower thermal margin reduces long-term reliability in high-temp enclosures. | Select MAX4581EUE+ only if ambient operating temperature stays below +85°C and automotive qualification is unnecessary. |
| ADG708BRUZ | 8-channel CMOS mux; 4.5Ω typical RON at +5V; -40°C to +85°C; TSSOP-16; no dual-supply support (single 1.8–5.5V only). | Lacks bipolar supply capability-cannot handle ±2.5V or ±5V sensor signals without level-shifting circuitry. | Choose ADG708BRUZ only for low-voltage, single-supply systems where ultra-low RON outweighs supply flexibility requirements. |
Compared with MAX4581EUE+, the MAX4581AUE+ adds extended temperature qualification critical for automotive deployment; versus ADG708BRUZ, it trades lower on-resistance for essential dual-supply operation and higher off-isolation-making it superior for precision, wide-swing, high-reliability analog routing.
Availability
MAX4581AUE+ is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor hubs, portable medical instrumentation, and professional audio routing requiring stable component supply across extended temperature ranges.
Supply support for MAX4581AUE+ 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 demanding industrial, automotive, and medical applications.
The MAX4581AUE+ belongs to Maxim's low-voltage analog switch/multiplexer product line, engineered specifically for high-fidelity, rail-to-rail signal routing in space- and power-constrained systems operating across extreme temperatures.
FAQ
What supply configurations does the MAX4581AUE+ support?
The MAX4581AUE+ supports both ±2V to ±6V dual supplies and +2V to +12V single supply (with VEE tied to GND). It maintains specified performance-including 80Ω on-resistance and 1nA leakage-across this full range. Dual-supply operation enables true bipolar signal handling (e.g., ±2.5V sensor outputs), while single-supply mode simplifies power design in battery-powered equipment. The device draws less than 1µA in enable-disabled state.
Is the MAX4581AUE+ pin-compatible with industry-standard analog multiplexers?
Yes, the MAX4581AUE+ is pin-compatible with the 74HC4051, CD4051, and Maxim's own MAX4051. Its pinout follows the original RCA CD4051 standard: X0–X7 on pins 1–6 and 14–15, X on pin 12, A/B/C on pins 9–11, ENABLE on pin 13, VCC on pin 16, VEE on pin 7, and GND on pin 8. This allows direct replacement in existing layouts without PCB modification.
How does the MAX4581AUE+ perform in high-temperature automotive environments?
The MAX4581AUE+ is qualified to AEC-Q100 Grade 1 and operates reliably from -40°C to +125°C. Its leakage currents (1nA off-leakage at +25°C, 5nA at +85°C) and on-resistance (80Ω at ±5V, +25°C) are guaranteed across this full range. This makes the MAX4581AUE+ suitable for under-hood applications such as engine control sensor multiplexing, where sustained high-temperature stability is mandatory.
What is the significance of rail-to-rail analog switching in the MAX4581AUE+?
Rail-to-rail switching means the MAX4581AUE+ passes analog signals from VEE to VCC without clipping or distortion-even at supply extremes. For example, with ±5V supplies, it handles ±4.9V signals; with +5V single supply, it passes 0V to +5V. This eliminates need for external level-shifting circuitry, preserves dynamic range in precision measurement systems, and simplifies design of sensor interfaces with wide output spans.
Does the MAX4581AUE+ require external components for stable operation?
No external components are required for basic operation of the MAX4581AUE+. Decoupling capacitors (0.1µF ceramic near VCC and VEE pins) are recommended per standard analog IC practice. The device contains no internal pull-ups or pull-downs on address or enable lines-these must be driven actively by the host controller. ESD protection diodes are integrated, eliminating need for external clamping in most cases.
MAX4581AUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 80Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 200ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 0.5pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 18pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -78dB @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX4581AUE+ FAQ
1.How can I place an order for MAX4581AUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4581AUE+ 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 MAX4581AUE+ reliable?
The price and inventory of MAX4581AUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4581AUE+ is usually 5 days.
3.What payment methods are accepted for MAX4581AUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4581AUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4581AUE+?
MAX4581AUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4581AUE+ 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 MAX4581AUE+?
For technical support, including MAX4581AUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4581AUE+ requirements.
6.How does Aetrix verify that MAX4581AUE+ is sourced from the original manufacturer or authorized distributors?
All MAX4581AUE+ 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 MAX4581AUE+ meets industry standards.
7.What is the process for return or replacement of MAX4581AUE+?
All MAX4581AUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4581AUE+, 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 MAX4581AUE+ part is unused and in its original packaging.
Return procedure for MAX4581AUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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