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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 SWITCH SP8TX1 80OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,944
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Product details
Overview
MAX4581AUE from Maxim Integrated is an 8-channel CMOS analog multiplexer configured for rail-to-rail signal switching in low-voltage systems. It operates from ±2V to ±6V dual supplies or +2V to +12V single supply, features 80Ω on-resistance at ±5V, 1nA off-leakage at +25°C, and TTL/CMOS-compatible logic thresholds - enabling use in battery-powered data-acquisition front-ends and audio routing circuits.
For engineers reviewing the MAX4581AUE datasheet, MAX4581AUE pinout, MAX4581AUE application, or MAX4581AUE equivalent, key selection criteria include guaranteed on-resistance matching across channels, low distortion (<0.02% @600Ω), high off-isolation (–74dB @50Ω), and AEC-Q100-qualified variants for automotive signal conditioning.
Technical Context
The MAX4581AUE implements a single 8:1 analog multiplexer with address-controlled channel selection via three digital inputs (A, B, C) and an active-low ENABLE terminal. Its CMOS switch architecture supports bidirectional signal flow with no ground reference required for analog paths - signals are bounded only by VCC and VEE rails.
All internal logic-level translators convert TTL/CMOS inputs into full-rail gate drive for analog switches, ensuring consistent switching performance across supply voltages from +2V to +12V or ±2V to ±6V. Break-before-make timing is guaranteed ≤20ns, minimizing transient crosstalk during channel transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2V to ±6V dual or +2V to +12V single - enables operation in 3.3V, 5V, and 12V systems without level-shifting. |
| 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-Resistance Match | ±10Ω max between channels - critical for ratiometric measurements and multi-channel calibration stability. |
| Off-Isolation | –74dB at 1MHz (50Ω) - suppresses crosstalk between unused and active channels in dense multiplexed systems. |
| THD | <0.02% @600Ω, 20Hz–20kHz - maintains fidelity in audio and instrumentation signal routing. |
| Logic Thresholds | 0.8V to 2.4V - ensures reliable switching with standard 5V TTL/CMOS controllers without external biasing. |
Pinout & Package
MAX4581AUE is housed in a 16-pin TSSOP package (JEDEC MO-153, 4.4mm × 5.0mm × 1.1mm), RoHS-compliant and lead-free. Pin 1 is marked with a dot; exposed pad is not present (TQFN variant has EP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | X0–X7 Analog Inputs | Eight bidirectional analog terminals - interchangeable as inputs or outputs; no polarity constraint. |
| 9 | A | LSB address input for channel selection (binary 0–7). |
| 10 | B | Middle address bit for 8-channel decode. |
| 11 | C | MSB address input - completes 3-bit selection of one of eight Xn paths to output X. |
| 12 | ENABLE | Active-low global enable - disables all switches when high; reduces leakage and power in standby. |
| 13 | X | Common analog output - connects selected Xn input; bidirectional and rail-to-rail capable. |
| 14 | GND | Digital ground reference - separate from analog signal path; no analog current flows here. |
| 15 | VEE | Negative supply rail - tied to GND for single-supply operation; sets lower analog voltage limit. |
| 16 | VCC | Positive supply rail - powers logic and analog switches; defines upper analog voltage limit. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals spanning VEE to VCC - eliminates need for signal clamping or level-shifting in ±5V or +5V systems. |
| Guaranteed on-resistance flatness | ≤100Ω variation over full analog range - ensures consistent gain and linearity across signal amplitude. |
| Low charge injection (0.5–5pC) | Minimizes voltage glitch at output during switching - critical for sample-and-hold and ADC front-end applications. |
| TTL/CMOS logic compatibility | Validated at +5V supply with 0.8V/2.4V thresholds - interoperable with microcontrollers, FPGAs, and logic families without interface circuitry. |
| Automotive temperature range | –40°C to +125°C operation - qualified for engine control, ADAS sensor multiplexing, and infotainment signal routing. |
Applications
| Battery-Powered Data Acquisition | Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing multiple thermistor, RTD, or strain gauge sensors into a single ADC channel in portable medical or environmental monitors. IC Role / Device Role / Timing Role: 8:1 analog multiplexer providing channel-selectable, low-leakage, rail-to-rail signal path to ADC input. Use Value: 1nA off-leakage prevents sensor bias current errors; 80Ω RON minimizes gain drift across channels. | Use Scenario: Switching between microphone inputs, line-level sources, or headphone outputs in compact audio mixers or smart speakers. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling flexible source/sink reconfiguration without signal inversion. Use Value: <0.02% THD preserves audio fidelity; –74dB off-isolation prevents audible crosstalk between channels. |
| Automotive Sensor Interface | Industrial Process Monitoring |
Use Scenario: Consolidating O2, MAP, and coolant temperature sensor signals onto shared CAN bus ADC subsystems in engine control units. IC Role / Device Role / Timing Role: AEC-Q100-qualified analog multiplexer operating reliably across –40°C to +125°C under EMI-rich vehicle environments. Use Value: Guaranteed RON match (±10Ω) enables ratiometric calibration; dual-supply support simplifies integration with ±5V sensor excitation. | Use Scenario: Scanning 8 pressure transducers in HVAC control panels or factory automation PLC I/O modules. IC Role / Device Role / Timing Role: High-isolation, low-distortion multiplexer interfacing millivolt-level sensor outputs to isolated sigma-delta ADCs. Use Value: –96dB crosstalk (MAX4582 variant referenced for system-level validation) ensures accurate multi-sensor trending without interference. |
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, but rated for –40°C to +85°C industrial range instead of automotive –40°C to +125°C. | Suitable for non-automotive industrial or commercial equipment where extended temperature is not required. | Select MAX4581EUE+ for cost-sensitive industrial designs needing identical performance at lower ambient extremes. |
| ADG1408BRUZ | 8:1 mux with 4.7Ω on-resistance (lower), but requires ≥±4.5V dual or ≥9V single supply; higher ICC (200µA vs. <1µA). | Better for high-precision, low-RON applications where supply headroom allows; less suitable for battery operation. | Choose ADG1408BRUZ when ultra-low on-resistance and charge injection (<0.2pC) outweigh supply flexibility and quiescent current constraints. |
Compared with MAX4581EUE+, the MAX4581AUE offers extended temperature qualification for automotive use; versus ADG1408BRUZ, it trades lower RON for wider supply range (+2V to +12V), lower leakage, and significantly reduced supply current - making it optimal for portable and wide-input-range systems.
Availability
MAX4581AUE is available at Aetrix Electronics and suitable for battery-operated equipment, automotive sensor interfaces, and industrial process monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
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 communications applications.
The MAX4581AUE belongs to Maxim's low-voltage analog switch/multiplexer product line, engineered for rail-to-rail signal integrity, low leakage, and robust operation in space-constrained, power-sensitive systems.
FAQ
What is the maximum analog signal voltage range supported by the MAX4581AUE?
The MAX4581AUE supports rail-to-rail analog signals from VEE to VCC. With ±5V supplies, this is –5V to +5V; with +12V single supply (VEE = GND), it is 0V to +12V. Absolute maximum ratings allow VCC up to +13V and VEE down to –0.3V, but sustained operation must stay within specified supply ranges to ensure reliability and parameter guarantees.
Does the MAX4581AUE require external pull-up or pull-down resistors on its address pins (A, B, C)?
No, the MAX4581AUE does not require external biasing on A, B, or C pins. Its logic inputs have guaranteed TTL/CMOS-compatible thresholds (0.8V low, 2.4V high at +5V), and internal input leakage is ±1µA - sufficiently low to interface directly with microcontroller GPIOs or FPGA outputs without added components.
Can the MAX4581AUE be used with a single +3.3V supply?
Yes, the MAX4581AUE operates with a single +3.3V supply (VEE = GND). At +3.3V, typical on-resistance is ~190Ω, off-leakage remains ≤2nA at +25°C, and logic thresholds adjust to ~0.5V/1.0V - fully compatible with 3.3V logic families. Performance metrics are characterized and guaranteed across the full +2V to +12V single-supply range.
How does the ENABLE pin function, and what happens when it is left unconnected?
The ENABLE pin is active-low: pulling it low enables channel switching; driving it high disables all switches (high-impedance off-state). If left floating, internal leakage may cause unpredictable behavior. The datasheet specifies connecting ENABLE to GND for default enabled operation or to VCC for default disabled state - never leave it unconnected in production designs.
Is the MAX4581AUE pin-compatible with legacy 74HC4051 devices?
Yes, the MAX4581AUE is pin-compatible and functionally equivalent to the 74HC4051, including identical pinout (X0–X7, A/B/C, ENABLE, X, VCC, VEE, GND) and truth table. It improves upon the HC4051 with lower on-resistance, lower leakage, wider supply range, and guaranteed performance over –40°C to +125°C - enabling drop-in upgrades in existing layouts.
MAX4581AUE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SP8T - Open/Closed
- 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:
- Automotive
- Qualification:
- AEC-Q100
- 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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