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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 SWITCH SP8TX1 80OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:276
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Product details
Overview
MAX4581ASE from Maxim Integrated is an 8-channel CMOS analog multiplexer designed for low-voltage signal routing in battery-powered and precision measurement systems. It supports ±2V to ±6V dual supplies or +2V to +12V single supply, delivers rail-to-rail analog switching, guarantees 80Ω on-resistance at ±5V, and exhibits only 1nA off-leakage at +25°C - enabling high-accuracy data acquisition in automotive sensor interfaces.
For engineers reviewing the MAX4581ASE datasheet, MAX4581ASE pinout, MAX4581ASE application, or MAX4581ASE equivalent, this page provides verified electrical parameters, validated package mapping (16-pin SO), confirmed AEC-Q100–qualified automotive temperature range (−40°C to +125°C), and real-world timing and leakage behavior under dual- and single-supply operation.
Technical Context
The MAX4581ASE implements a single 8:1 analog multiplexer with TTL/CMOS-compatible digital address inputs (A, B, C) and enable control. Its internal CMOS switch architecture uses matched P- and N-channel transistors to achieve rail-to-rail signal handling and low charge injection (≤5pC).
It features break-before-make switching (4–20ns), guaranteed on-resistance matching (≤10Ω max ΔRON), and operates across three supply configurations: bipolar (±2V to ±6V), single-ended (+2V to +12V), and low-voltage (+2.7V to +3.6V). All analog paths are fully bidirectional and isolated from GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2V to ±6V dual or +2V to +12V single - enables direct interface with Li-ion batteries and industrial 3.3V/5V/12V rails |
| On-Resistance (RON) | 80Ω max at ±5V - ensures minimal gain error and voltage drop in 12-bit+ data-acquisition front-ends |
| Off-Leakage Current | 1nA at +25°C - preserves signal integrity in high-impedance sensor nodes (e.g., thermocouples, pH electrodes) |
| Channel Count | 8:1 single-ended - supports multiplexing of up to eight analog sensors or signal sources onto one ADC input |
| Logic Compatibility | 0.8V to 2.4V thresholds - interoperates with 3.3V and 5V microcontrollers without level shifters |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive and industrial control applications |
| THD | <0.02% at 600Ω - maintains audio-grade fidelity in voice and tone routing circuits |
Pinout & Package
MAX4581ASE is supplied in a 16-pin narrow SO (Small Outline) package, 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 9 is ENABLE; pins 10–12 are address inputs A, B, C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| X0–X7 | Analog Input Channels 0–7 | Bidirectional, rail-to-rail-capable terminals - any may serve as source or sink; no internal ground reference |
| X | Common Output | Single-pole output node shared across all 8 channels; connects to ADC or amplifier input |
| A, B, C | Digital Address Inputs | Binary-select lines determining active channel (0–7); TTL/CMOS logic thresholds ensure robust noise immunity |
| ENABLE | Global Enable Input | Active-high control disabling all switches simultaneously - used for power gating or system-level isolation |
| VCC / VEE | Positive / Negative Supply | Set analog signal swing limits; VEE tied to GND for single-supply use; ESD diodes clamp signals to these rails |
| GND | Digital Ground Reference | Reference for logic inputs only; no connection to analog signal paths - eliminates ground-loop coupling |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified for automotive applications per stress test requirements - supports deployment in engine control, ADAS sensor hubs |
| Rail-to-Rail Switching | Supports analog signals from VEE to VCC - eliminates need for external biasing in unipolar/bipolar sensor interfaces |
| Guaranteed RON Matching | ≤10Ω difference between worst-case channels - critical for ratiometric measurements and calibration stability |
| Low Charge Injection | ≤5pC - minimizes voltage glitch on high-impedance sampling capacitors (e.g., SAR ADC hold capacitors) |
| High Off-Isolation | −74dB at 1MHz (50Ω) - suppresses crosstalk between inactive channels in multi-sensor monitoring |
| Break-Before-Make | 4–20ns interval - prevents momentary shorting during channel transitions, protecting sensitive downstream circuitry |
Applications
| Automotive Cabin Sensors | Portable Medical Instrumentation |
|---|---|
Use Scenario: Multiplexing cabin temperature, humidity, CO₂, and occupancy sensor outputs into a single microcontroller ADC. IC Role / Device Role / Timing Role: 8:1 analog multiplexer enabling sequential sampling of multiple low-power analog sensors. Use Value: −40°C to +125°C rating ensures reliability in vehicle interior environments; 1nA off-leakage preserves accuracy of high-Z electrochemical sensors. | Use Scenario: Routing ECG, SpO₂, and temperature analog signals in handheld patient monitors. IC Role / Device Role / Timing Role: Low-distortion (<0.02%), rail-to-rail analog switch supporting battery-powered, low-noise front-end design. Use Value: Single +3.3V operation extends battery life; 80Ω RON minimizes loading on instrumentation amplifier outputs. |
| Industrial Data Acquisition | Audio Signal Routing |
Use Scenario: Scanning thermocouple, RTD, and strain gauge inputs in PLC analog input modules. IC Role / Device Role / Timing Role: Precision 8-channel multiplexer with guaranteed RON match and low THD for calibrated measurement systems. Use Value: ≤10Ω RON variation enables software-based channel-to-channel correction; dual-supply support accommodates bipolar sensor outputs. | Use Scenario: Selecting between microphone preamps, line inputs, and DAC outputs in compact audio mixers. IC Role / Device Role / Timing Role: Bidirectional analog switch providing low-crosstalk (<−96dB) and low-distortion signal path selection. Use Value: −74dB off-isolation prevents bleed-through between audio sources; 5pC charge injection avoids pop/click artifacts during switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4581ESE+ | Same silicon, −40°C to +85°C operating range; lower temperature grade | Not qualified for under-hood or extended-temperature industrial deployments | Select when full AEC-Q100 qualification and +125°C operation are unnecessary |
| ADG1408BRUZ | 8:1 mux with 4.7Ω RON (lower), but requires ≥±4.5V dual or ≥9V single supply; no −40°C to +125°C option | Higher supply demand limits use in 3.3V battery systems; unsuitable for automotive thermal extremes | Choose only if ultra-low on-resistance is prioritized over supply flexibility and temperature range |
Compared with MAX4581ESE+, the MAX4581ASE offers extended temperature capability essential for automotive and harsh-environment designs; compared with ADG1408BRUZ, it trades lower RON for broader supply compatibility and guaranteed automotive-grade reliability.
Availability
MAX4581ASE is available at Aetrix Electronics and suitable for automotive cabin sensing, portable medical instrumentation, industrial data acquisition, and audio signal routing 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/multiplexer product line, engineered specifically for high-accuracy, low-power signal routing in battery-operated and thermally challenging systems.
FAQ
What is the maximum analog signal range supported by the MAX4581ASE?
The MAX4581ASE supports rail-to-rail analog signals from VEE to VCC. With ±5V supplies, this yields a ±5V range; with +5V single supply (VEE = GND), the range is 0V to +5V. Absolute maximum ratings allow VCC up to +13V and VEE down to −0.3V, but operational signal range remains bounded by the applied supply rails. The MAX4581ASE does not require external biasing for unipolar or bipolar inputs.
Does the MAX4581ASE require external level-shifting when interfaced with a 3.3V microcontroller?
No. The MAX4581ASE has TTL/CMOS-compatible logic thresholds (0.8V to 2.4V) that function correctly with 3.3V logic levels. When VCC = +5V or ±5V, VAH = 1.5V to 2.4V and VAL = 0.8V to 1.5V - well within 3.3V logic margins. No level shifter is needed for direct connection to standard 3.3V GPIOs driving A, B, C, or ENABLE inputs of the MAX4581ASE.
Can the MAX4581ASE be used in a single-supply configuration with VEE grounded?
Yes. The MAX4581ASE is explicitly specified for single-supply operation from +2V to +12V with VEE connected to GND. In this mode, analog signals swing from 0V to VCC, and logic inputs remain compatible. The device draws negligible supply current (±1µA typical), making it ideal for +3.3V or +5V battery-powered systems where the MAX4581ASE serves as a low-quiescent multiplexer.
What is the guaranteed on-resistance match between channels for the MAX4581ASE?
The MAX4581ASE guarantees ∆RON ≤10Ω across all eight channels under ±5V supply conditions (VCC = 5.5V, VEE = −5.5V, VX/Y/Z = ±4.5V). This specification - defined as RON(MAX) − RON(MIN) - ensures consistent gain and offset behavior when calibrating multi-channel systems, directly supporting ratiometric measurements and channel-swapping compensation algorithms using the MAX4581ASE.
Is the MAX4581ASE pin-compatible with legacy industry-standard multiplexers?
Yes. The MAX4581ASE is pin-compatible with the CD4051, 74HC4051, and MAX4051 families in 16-pin SO packages. Its pinout follows the original RCA CD4051 nomenclature (X0–X7, X, A/B/C, ENABLE, VCC, VEE, GND), allowing drop-in replacement in existing designs - provided the higher performance (lower RON, leakage, distortion) and extended temperature range of the MAX4581ASE are leveraged in the updated layout.
MAX4581ASE 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-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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