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Analog Devices Inc./Maxim Integrated MAX4581CPE
- Part No.:
- MAX4581CPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4581CPE.pdf
- Description:
- IC MUX 8:1 80OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,629
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Product details
Overview
MAX4581CPE 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, 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 MAX4581CPE datasheet, MAX4581CPE pinout, MAX4581CPE application, or MAX4581CPE equivalent, key selection criteria include guaranteed on-resistance matching across channels, break-before-make timing (4–20ns), low charge injection (0.5–5pC), and compatibility with 74HC4051 pinout for drop-in replacement in legacy designs.
Technical Context
The MAX4581CPE implements a single 8:1 analog multiplexer using CMOS transmission-gate architecture with independent VCC and VEE supply rails. Its internal logic decodes three address inputs (A/B/C) to select one of eight bidirectional analog paths (X0–X7) to the common output X, while Enable controls global channel activation.
All analog terminals support rail-to-rail signal swing between VEE and VCC, with ESD protection diodes clamping signals beyond supply rails. Leakage current originates primarily from reverse-biased ESD diodes, resulting in temperature-dependent off-leakage (1nA @ +25°C, 5nA @ +85°C) and matched on-resistance flatness critical for precision signal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | 8-channel single-pole, eight-throw (8:1) analog multiplexer |
| Supply Range | ±2V to ±6V dual supply or +2V to +12V single supply - enables operation in both bipolar sensor interfaces and unipolar microcontroller systems |
| On-Resistance | 80Ω max at ±5V - ensures minimal signal attenuation and gain error in 600Ω audio or instrumentation paths |
| Off-Leakage Current | 1nA max at +25°C - preserves accuracy in high-impedance sensor front-ends and sample-hold circuits |
| Logic Thresholds | 0.8V to 2.4V - ensures reliable switching with 3.3V or 5V TTL/CMOS controllers without level-shifting |
| Break-Before-Make Time | 4–20ns - prevents momentary shorting during channel transitions in multi-sensor scanning |
| Total Harmonic Distortion | <0.02% at 600Ω - maintains fidelity in audio routing and low-distortion data acquisition |
Pinout & Package
MAX4581CPE is housed in a 16-pin plastic DIP package (0.300" wide) with through-hole mounting and industry-standard footprint compatible with 74HC4051.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | X0–X7 Analog Inputs | Bidirectional analog signal terminals; interchangeable as input or output; each connects to common X when selected |
| 9 | A | LSB address input for 3-bit binary decoding (A = bit 0) |
| 10 | B | Address input (B = bit 1) |
| 11 | C | MSB address input (C = bit 2) |
| 12 | Enable | Active-low global enable; pulls all switches open when high |
| 13 | X | Common analog output/input terminal - bidirectional path to selected X0–X7 |
| 14 | GND | Digital ground reference for logic circuitry only; no analog ground connection |
| 15 | VEE | Negative analog supply; tied to GND for single-supply operation |
| 16 | VCC | Positive analog and digital supply; powers internal logic and switch gates |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Signal Handling | Analog signals swing fully from VEE to VCC - eliminates clipping in ±5V op-amp stages or 0–5V ADC drivers |
| Guaranteed On-Resistance Match | ΔRON ≤ 10Ω at ±5.5V - ensures consistent gain and offset across multiplexed sensor channels |
| Low Charge Injection | 0.5–5pC - minimizes voltage glitch on sample-hold capacitors during switching |
| High Off-Isolation | <−74dB at 1MHz (50Ω) - suppresses crosstalk between inactive channels in dense PCB layouts |
| Pin Compatibility | Direct replacement for 74HC4051 and MAX4051 - allows drop-in upgrade without layout change |
Applications
| Battery-Powered Data Acquisition | Audio Signal Routing |
|---|---|
Use Scenario: Scanning multiple thermistor or potentiometer inputs into a single ADC channel in portable test equipment. IC Role / Device Role / Timing Role: 8:1 analog multiplexer enabling sequential sampling with <20ns break-before-make to prevent channel coupling. Use Value: 1nA off-leakage preserves measurement integrity at high source impedances (>1MΩ), while 80Ω RON limits gain error to <0.1% in 600Ω buffered paths. | Use Scenario: Routing line-level stereo signals between multiple sources (DAC, Bluetooth module, aux input) and amplifier inputs in compact audio mixers. IC Role / Device Role / Timing Role: Bidirectional analog switch supporting full swing (±2V) audio with <0.02% THD at 20Hz–20kHz. Use Value: Rail-to-rail capability handles peak-to-peak swings up to 10V without clipping; −96dB crosstalk prevents audible bleed between channels. |
| Automotive Sensor Interface | Low-Voltage Industrial Control |
Use Scenario: Multiplexing engine temperature, pressure, and throttle position sensor outputs in under-hood ECUs operating from 5V or 12V battery rails. IC Role / Device Role / Timing Role: High-reliability analog switch rated for 0°C to +70°C ambient, supporting single-supply +5V or +12V operation. Use Value: Guaranteed 150Ω RON at +5V single supply ensures predictable loading on ratiometric sensors; ±2V min supply enables operation during cold-crank conditions. | Use Scenario: Isolating analog feedback paths in 3.3V microcontroller-based motor drives where supply headroom is constrained. IC Role / Device Role / Timing Role: Low-voltage analog switch enabling operation down to +2V supply with rail-to-rail signal handling. Use Value: Functional at +2.7V with 450Ω RON - sufficient for non-critical monitoring paths; TTL/CMOS thresholds ensure direct interface with 3.3V GPIOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4051CPE | Same 8:1 configuration, but higher 100Ω RON at ±5V and 2nA off-leakage at +25°C | Suitable for cost-sensitive industrial controls where leakage <5nA is acceptable | Select MAX4051CPE only if lower on-resistance flatness and tighter leakage specs are not required |
| ADG1408BRUZ | 8:1 mux with 4.7Ω RON, but requires ≥±4.5V dual supply or ≥9V single supply; not 2V-capable | Better for precision instrumentation where ultra-low RON matters more than supply flexibility | Choose ADG1408BRUZ when system supply supports ≥±4.5V and sub-5Ω RON is mandatory |
Compared with MAX4051CPE and ADG1408BRUZ, MAX4581CPE uniquely balances ultra-low leakage (1nA), wide supply range (+2V to +12V), and 74HC4051 pin compatibility-making it optimal for battery-powered, mixed-supply, and legacy-drop-in designs where supply headroom and precision coexist.
Availability
MAX4581CPE is available at Aetrix Electronics and suitable for battery-operated equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended product lifecycles.
Supply support for MAX4581CPE 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 MAX4581 series belongs to Maxim's low-voltage analog switch/multiplexer product line, engineered specifically for rail-to-rail performance, low leakage, and seamless integration into space-constrained, battery-sensitive systems.
FAQ
What supply voltages does the MAX4581CPE support?
The MAX4581CPE supports dual supplies from ±2V to ±6V and single supplies from +2V to +12V. When using a single supply, VEE must be connected to GND. Operation down to +2V is functional but increases on-resistance and switching times; for reliable performance, +2.7V minimum is recommended per datasheet characterization.
Is the MAX4581CPE pin-compatible with the 74HC4051?
Yes, the MAX4581CPE is fully pin-compatible with the 74HC4051 and MAX4051. Pin assignments for X0–X7, A/B/C, Enable, X, VCC, VEE, and GND match exactly, enabling direct drop-in replacement without PCB modification-retaining identical layout, routing, and footprint.
What is the maximum off-isolation performance of the MAX4581CPE?
The MAX4581CPE provides off-isolation of less than −74dB at 1MHz into a 50Ω load. This specification ensures strong rejection of signal coupling between unselected channels, critical in high-density analog routing such as multi-sensor data loggers or modular test equipment where adjacent-channel interference must be minimized.
Does the MAX4581CPE require external level-shifting for 3.3V microcontroller control?
No, the MAX4581CPE does not require external level-shifting when driven by 3.3V microcontrollers. Its logic inputs accept TTL/CMOS thresholds (0.8V low, 2.4V high) and are fully compatible with 3.3V logic levels - VA, VB, VC, and Enable operate correctly with 0V/3.3V signaling without additional circuitry.
How does temperature affect the on-resistance of the MAX4581CPE?
On-resistance of the MAX4581CPE increases with temperature: typical RON rises from ~80Ω at +25°C to ~120Ω at +85°C under ±5V supplies. The datasheet guarantees ΔRON ≤ 10Ω across channels at +25°C, but matching degrades slightly at extremes - design margin should account for up to ±20% RON variation over the full 0°C to +70°C operating range.
MAX4581CPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX4581CPE FAQ
1.How can I place an order for MAX4581CPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4581CPE 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 MAX4581CPE reliable?
The price and inventory of MAX4581CPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4581CPE is usually 5 days.
3.What payment methods are accepted for MAX4581CPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4581CPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4581CPE?
MAX4581CPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4581CPE 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 MAX4581CPE?
For technical support, including MAX4581CPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4581CPE requirements.
6.How does Aetrix verify that MAX4581CPE is sourced from the original manufacturer or authorized distributors?
All MAX4581CPE 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 MAX4581CPE meets industry standards.
7.What is the process for return or replacement of MAX4581CPE?
All MAX4581CPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4581CPE, 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 MAX4581CPE part is unused and in its original packaging.
Return procedure for MAX4581CPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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