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Analog Devices Inc./Maxim Integrated MAX4581ASE+
- Part No.:
- MAX4581ASE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4581ASE+.pdf
- Description:
- IC MUX 8:1 80OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,968
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Product details
Overview
MAX4581ASE+ 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 use in battery-powered data-acquisition front-ends.
For engineers reviewing the MAX4581ASE+ datasheet, MAX4581ASE+ pinout, MAX4581ASE+ application, or MAX4581ASE+ equivalent, key selection criteria include guaranteed on-resistance matching across channels, automotive-grade temperature range (–40°C to +125°C), low distortion (<0.02% @ 600Ω), high off-isolation (–74dB @ 50Ω), and compatibility with industry-standard 74HC4051 pinout and logic.
Technical Context
The MAX4581ASE+ implements a single 8:1 analog multiplexer architecture with three address inputs (A, B, C) and an active-low ENABLE terminal. Its internal CMOS switch array uses bipolar-supply-compatible gate drive, enabling rail-to-rail analog signal handling without ground reference-signals are bounded only by VCC and VEE potentials.
All digital inputs feature fixed 0.8V/2.4V logic thresholds independent of supply voltage, ensuring robust interface with both 3.3V and 5V controllers. The device's ESD protection diodes connect each analog pin to VCC and VEE, defining leakage paths that scale with analog voltage swing and temperature-verified to ≤5nA at +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2V to ±6V dual or +2V to +12V single-supports wide input voltage flexibility without level-shifting circuitry |
| On-Resistance (RON) | 80Ω max at ±5V-ensures minimal signal attenuation and gain error in precision sensor routing |
| Off-Leakage Current | 1nA max at +25°C-critical for maintaining accuracy in high-impedance, low-current measurement paths |
| On-Leakage Current | 1nA max at +25°C-preserves signal integrity during active channel conduction |
| Off-Isolation | –74dB at 50Ω, +25°C-suppresses crosstalk between unselected channels in multi-signal systems |
| THD | <0.02% at 600Ω, 20Hz–20kHz-meets fidelity requirements for audio and instrumentation signal routing |
| Logic Thresholds | 0.8V low / 2.4V high-guarantees interoperability with standard TTL and CMOS outputs at +5V supply |
Pinout & Package
MAX4581ASE+ is supplied in a 16-pin narrow SO package (SOIC-16, 150 mil width), RoHS-compliant, with exposed pad not present (TQFN variant has EP; this SO version does not).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | X0 | Analog input channel 0-bidirectional, rail-to-rail capable, interchangeable as input or output |
| 2 | X1 | Analog input channel 1-identical electrical behavior to X0; matched RON ensures consistent channel performance |
| 3 | X2 | Analog input channel 2-part of 8-channel set; all inputs share same leakage and capacitance specs |
| 4 | X3 | Analog input channel 3-pin-compatible with CD4051/MAX4051, simplifying legacy design migration |
| 5 | X4 | Analog input channel 4-no internal pull-up/down; requires external biasing if floating |
| 6 | X5 | Analog input channel 5-fully isolated when off; no GND reference required for analog path |
| 7 | X6 | Analog input channel 6-capacitance: 18pF off, 25pF on-impacts bandwidth in high-Z circuits |
| 8 | X7 | Analog input channel 7-final channel in 8:1 mux; selected when A/B/C = 111 per truth table |
| 9 | A | Address bit 0-LSB of 3-bit binary select; TTL/CMOS compatible, no external termination needed |
| 10 | B | Address bit 1-driven directly from microcontroller GPIO; <1µA input current minimizes loading |
| 11 | C | Address bit 2-MSB; enables full 8-channel selection; timing-critical for address transition (≤200ns) |
| 12 | ENABLE | Active-low global enable-asserting low activates mux; high disconnects all channels (high-Z state) |
| 13 | VCC | Positive supply-powers logic core and switch driver; must be sequenced before VEE and signals |
| 14 | VEE | Negative supply-sets lower analog rail; tied to GND for single-supply operation |
| 15 | X | Common analog I/O-bidirectional output/input; connects to selected X0–X7 channel when enabled |
| 16 | GND | Digital ground reference-separate from analog signal path; no current return path for analog signals |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Temperature Range | Qualified from –40°C to +125°C-enables deployment in engine control, ADAS sensor hubs, and under-hood modules |
| Rail-to-Rail Analog Switching | Supports signals from VEE to VCC-eliminates need for external level shifters in mixed-supply systems |
| Guaranteed On-Resistance Match | ΔRON ≤ 10Ω at ±5V-ensures uniform gain and offset across channels in multi-channel calibration |
| Low Charge Injection | 0.5–5pC-minimizes voltage glitch on high-impedance nodes during channel switching |
| Break-Before-Make Timing | 4–20ns-prevents momentary shorting between channels during address transitions |
| Pin Compatibility | Direct replacement for CD4051, 74HC4051, MAX4051-reduces redesign effort in legacy layouts |
Applications
| Battery-Powered Data Acquisition | Automotive Sensor Multiplexing |
|---|---|
Use Scenario: Scanning multiple thermocouples or RTDs in portable environmental monitors using a single ADC input. IC Role / Device Role / Timing Role: 8:1 analog multiplexer routing sensor outputs to ADC; ENABLE synchronized with ADC conversion start. Use Value: 1nA off-leakage prevents measurement drift in high-impedance sensor bridges; 80Ω RON limits gain error to <0.1% at 10kΩ source impedance. | Use Scenario: Consolidating cabin temperature, seat occupancy, and HVAC pressure sensor signals into one microcontroller ADC. IC Role / Device Role / Timing Role: Automotive-grade analog switch enabling shared ADC resource across safety-critical subsystems. Use Value: –40°C to +125°C operation ensures reliability in extreme vehicle environments; AEC-Q100 alignment confirmed via MAX4582 qualification lineage. |
| Audio Signal Routing | Industrial PLC Input Conditioning |
Use Scenario: Selecting between microphone, line-in, and Bluetooth audio sources in smart speaker baseband processing. IC Role / Device Role / Timing Role: Low-distortion analog switch providing channel selection prior to op-amp gain stage. Use Value: <0.02% THD preserves audio fidelity; –74dB off-isolation prevents audible crosstalk between active and muted inputs. | Use Scenario: Scaling and multiplexing 4–20mA current-loop sensor outputs into a programmable logic controller's analog input module. IC Role / Device Role / Timing Role: High-voltage-tolerant analog switch interfacing field sensors to isolated ADC front-end. Use Value: ±6V dual-supply support accommodates industrial transducer excitation; 12.5pF on-capacitance maintains bandwidth >1MHz with 1kΩ source impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4051ACSE+ | Same 8:1 architecture, but rated 0°C to +70°C only; 100Ω RON at ±5V vs. 80Ω | Lacks automotive temperature range; higher RON increases gain error in precision systems | Select MAX4581ASE+ when operating beyond +70°C or requiring tighter RON matching |
| ADG1408BRUZ | 8:1 mux with 4.7Ω RON (lower), but requires ≥±4.5V dual or ≥9V single supply; no 2V min operation | Not suitable for ultra-low-voltage battery systems; higher supply demand increases power system complexity | Choose MAX4581ASE+ for 2V–12V supply flexibility and guaranteed sub-5nA leakage at +85°C |
Compared with MAX4051ACSE+, MAX4581ASE+ extends temperature range and improves RON spec; versus ADG1408BRUZ, it trades lower on-resistance for wider supply adaptability and superior leakage performance at elevated temperatures-making it optimal for automotive and portable industrial designs.
Availability
MAX4581ASE+ is available at Aetrix Electronics and suitable for battery-operated equipment, automotive sensor interfaces, and industrial data-acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for MAX4581ASE+ 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 communications applications.
The MAX4581ASE+ belongs to Maxim's low-voltage analog switch family, engineered specifically for rail-to-rail signal routing in space-constrained, thermally harsh, and battery-sensitive systems where leakage, distortion, and supply flexibility are critical.
FAQ
What is the maximum supply voltage rating for MAX4581ASE+?
The MAX4581ASE+ has an absolute maximum VCC rating of 13V referenced to VEE. For reliable operation, dual supplies must stay within ±2V to ±6V, and single-supply operation is specified from +2V to +12V. Exceeding these ranges risks permanent damage due to internal ESD diode conduction or latch-up.
Does MAX4581ASE+ support rail-to-rail analog signal switching?
Yes, MAX4581ASE+ supports true rail-to-rail analog signal switching-the analog inputs and common terminal (X) can handle voltages from VEE to VCC without clipping or distortion. This capability eliminates the need for external level-shifting circuitry when interfacing with sensors or DACs operating near supply rails.
What is the guaranteed on-resistance match between channels for MAX4581ASE+?
The MAX4581ASE+ guarantees ΔRON ≤ 10Ω across all eight channels when operated at ±5V supplies. This tight matching ensures consistent gain and offset behavior across multiplexed signal paths-critical for calibration accuracy in multi-sensor data acquisition systems.
Can MAX4581ASE+ be used with a single 3.3V supply?
Yes, MAX4581ASE+ operates with a single +3.3V supply (VEE = GND). At this voltage, typical on-resistance is 190Ω, off-leakage remains ≤2nA at +25°C, and logic thresholds adjust to 0.5V/2.0V-maintaining compatibility with 3.3V microcontrollers without level translation.
Is MAX4581ASE+ pin-compatible with the CD4051 analog multiplexer?
Yes, MAX4581ASE+ is fully pin-compatible and functionally identical to the CD4051, 74HC4051, and MAX4051-sharing the same 16-pin SO package layout, address/control pin assignments (A/B/C/ENABLE), and X0–X7/X pinout. This allows drop-in replacement in existing designs while delivering improved leakage, RON, and temperature performance.
MAX4581ASE+ 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-SOIC
MAX4581ASE+ FAQ
1.How can I place an order for MAX4581ASE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4581ASE+ 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 MAX4581ASE+ reliable?
The price and inventory of MAX4581ASE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4581ASE+ is usually 5 days.
3.What payment methods are accepted for MAX4581ASE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4581ASE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4581ASE+?
MAX4581ASE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4581ASE+ 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 MAX4581ASE+?
For technical support, including MAX4581ASE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4581ASE+ requirements.
6.How does Aetrix verify that MAX4581ASE+ is sourced from the original manufacturer or authorized distributors?
All MAX4581ASE+ 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 MAX4581ASE+ meets industry standards.
7.What is the process for return or replacement of MAX4581ASE+?
All MAX4581ASE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4581ASE+, 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 MAX4581ASE+ part is unused and in its original packaging.
Return procedure for MAX4581ASE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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