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Analog Devices Inc./Maxim Integrated MAX4581LEEE+T
- Part No.:
- MAX4581LEEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX4581LEEE+T.pdf
- Description:
- IC MUX 8:1 80OHM 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,851
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Product details
Overview
MAX4581LEEE+T from Maxim Integrated is an 8-channel CMOS analog multiplexer operating from a single +2V to +12V supply, featuring rail-to-rail signal handling, 80Ω max on-resistance at +12V, 4Ω channel-to-channel on-resistance match, and 2nA off-leakage at +25°C - used in precision audio routing and data-acquisition front-ends.
For engineers reviewing the MAX4581LEEE+T datasheet, MAX4581LEEE+T pinout, MAX4581LEEE+T application, or MAX4581LEEE+T equivalent, this page delivers verified pin functions, real-world switching performance metrics (tON = 200ns, tOFF = 150ns), rail-to-rail analog range, TTL/CMOS logic compatibility at +12V, and direct substitution guidance against industry-standard 74HC4051 and MAX4051 families.
Technical Context
The MAX4581LEEE+T implements a single-ended 8:1 analog multiplexer architecture with three address lines (A/B/C) and an active-low enable input, supporting break-before-make switching to prevent signal shorting during channel transitions. Its CMOS transmission-gate design ensures bidirectional signal flow with no ground reference required for analog paths.
All digital inputs feature fixed 0.8V–2.0V logic thresholds independent of VCC, enabling guaranteed TTL/CMOS compatibility across the full +2V to +12V supply range. Internal ESD diodes clamp analog pins to VCC and GND, limiting analog leakage to ±2nA at +25°C while defining absolute maximum analog voltage as (GND − 0.3V) to (VCC + 0.3V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2V to +12V single supply - supports battery-powered and industrial 12V systems without level-shifting. |
| On-Resistance (max) | 80Ω at VCC = +12V - ensures minimal signal attenuation and gain error in precision sensor interfaces. |
| On-Resistance Match | 4Ω max between channels at +25°C - critical for multi-channel instrumentation where channel-to-channel gain consistency is required. |
| Off-Leakage Current | ±2nA at +25°C - preserves high-impedance sensor node integrity and prevents DC offset drift in µA-level current loops. |
| Enable Turn-On/Off Time | 200ns / 150ns max - enables fast multiplexing in high-throughput data acquisition up to ~2MHz channel rate. |
| Analog Signal Range | Rail-to-rail (0V to VCC) - allows full utilization of ADC input range and eliminates need for external biasing in unipolar systems. |
| Logic Thresholds | VIH = 2.0V, VIL = 0.8V - guarantees reliable interface with 3.3V and 5V microcontrollers without external translators. |
Pinout & Package
MAX4581LEEE+T uses a 16-pin QSOP package (4.4mm × 3.9mm body, 1.27mm pitch). The exposed pad is absent - unlike TQFN variants, QSOP has no thermal pad.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,4,5,12–15 | X0–X7 Analog Inputs | Eight bidirectional analog switch terminals; any may serve as input or output depending on signal direction. |
| 3 | X Analog Output | Common output node for all eight channels; connects to selected Xn when ENABLE = low and address matches. |
| 6 | ENABLE | Active-low digital control - drives low to activate switching; tie to GND for always-on operation. |
| 7,8 | GND | Digital ground reference only; analog signals are floating relative to GND and bounded by VCC/GND rails. |
| 9 | C Address Input | MSB of 3-bit binary channel select (CBA); determines which of eight Xn inputs connects to X output. |
| 10 | B Address Input | Mid-bit of channel select; works with A and C to decode 0–7 channel selection per truth table. |
| 11 | A Address Input | LSB of channel select; all three address pins define the active channel when ENABLE is asserted. |
| 16 | VCC | Single positive supply for both analog switches and digital logic; must be bypassed with 0.1µF capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog operation | Supports 0V to VCC signal swing without clipping - eliminates need for level-shifting in unipolar sensor or DAC interfaces. |
| Guaranteed 4Ω RON match | Ensures ≤0.5% gain mismatch across channels - essential for multi-sensor calibration and differential measurement accuracy. |
| 2nA off-leakage at +25°C | Minimizes voltage error in high-Z circuits (e.g., pH electrodes, piezoelectric sensors) where leakage dominates offset drift. |
| Pin-compatible with 74HC4051/MAX4051 | Enables drop-in replacement in existing designs using industry-standard 16-pin SO/QSOP footprints and logic mapping. |
| TTL/CMOS logic thresholds | Fixed 0.8V/2.0V thresholds ensure robust digital interface across supply voltages - no external pull-ups or level shifters needed. |
Applications
| Audio Signal Routing | Data-Acquisition Front-End |
|---|---|
Use Scenario: Switching between multiple microphone or line-level audio sources into a single ADC path in portable audio recorders. IC Role / Device Role: 8:1 analog multiplexer selecting one of eight bidirectional audio channels onto a common output bus. Use Value: Low THD (0.02%) and high off-isolation (−90dB) preserve signal fidelity and prevent crosstalk between active/inactive channels. |
Use Scenario: Scanning 8 thermistor or RTD sensor inputs into a single precision ADC in industrial temperature monitoring systems. IC Role / Device Role: High-impedance analog multiplexer providing rail-to-rail signal pass-through with minimal loading on sensor bridges. Use Value: 2nA off-leakage and 4Ω RON match maintain measurement accuracy across all channels without per-channel calibration. |
| Communications Circuit Switching | DSL Modem Line Interface |
Use Scenario: Reconfiguring analog filter banks or test signal injection paths in programmable radio transceivers. IC Role / Device Role: Low-capacitance (18pF off-capacitance) analog switch enabling clean RF/IF signal routing without parasitic loading. Use Value: −96dB crosstalk and 200ns switching speed support multi-band agile filtering with minimal inter-channel interference. |
Use Scenario: Selecting between primary and backup line drivers or diagnostic test points in ADSL/VDSL modem PHY layers. IC Role / Device Role: Fault-tolerant analog switch handling ±12V transients via internal ESD clamps while maintaining low on-resistance. Use Value: Absolute max rating of (GND − 0.3V) to (VCC + 0.3V) and 2000V HBM ESD protection ensure robustness in noisy telco environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC4051D,653 | Higher on-resistance (120Ω typ at 4.5V), wider RON variation (±30Ω), no guaranteed 2nA leakage spec. | Acceptable for general-purpose switching but not precision sensor multiplexing requiring sub-nA leakage or tight RON matching. | Select MAX4581LEEE+T when leakage, matching, or rail-to-rail performance is critical; choose 74HC4051D for cost-sensitive non-precision uses. |
| MAX4051ACPE+ | Same pinout and function, but higher leakage (±20nA), higher RON (100Ω), and no guaranteed 4Ω matching. | Suitable for legacy designs where MAX4581L's enhanced specs aren't required; lacks the low-leakage guarantee for high-Z nodes. | MAX4581LEEE+T replaces MAX4051ACPE+ directly when upgrading for improved accuracy, lower distortion, or tighter matching. |
Compared with 74HC4051D and MAX4051ACPE+, the MAX4581LEEE+T delivers superior leakage control (2nA vs. ≥20nA), tighter on-resistance matching (4Ω vs. ≥30Ω), and guaranteed rail-to-rail operation - making it the preferred choice for precision, low-drift, and high-fidelity analog multiplexing.
Availability
MAX4581LEEE+T is available at Aetrix Electronics and suitable for audio signal routing, data-acquisition front-ends, and communications circuit switching requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for MAX4581LEEE+T 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4581L family was designed specifically for low-voltage, low-leakage, high-accuracy analog multiplexing in sensor interfaces, test equipment, and signal-routing systems demanding rail-to-rail operation and guaranteed matching.
FAQ
What is the maximum supply voltage for MAX4581LEEE+T?
The MAX4581LEEE+T supports a maximum supply voltage of +12.6V, with absolute maximum ratings specifying VCC up to +13V. Operation beyond +12.6V risks exceeding guaranteed electrical specifications, though the device includes internal ESD diodes that clamp analog pins to VCC and GND. For reliable long-term performance, maintain VCC within the +2V to +12V recommended range specified in the datasheet.
Does MAX4581LEEE+T support bidirectional signal flow?
Yes, the MAX4581LEEE+T supports fully bidirectional analog signal flow. Its CMOS transmission-gate architecture makes all analog pins - X0–X7 and X - electrically symmetric; any pin can serve as input or output depending on system topology. This enables flexible use in both source-selection and load-switching configurations without signal-direction constraints.
What is the guaranteed on-resistance match between channels for MAX4581LEEE+T?
The MAX4581LEEE+T guarantees a maximum on-resistance match (ΔRON) of 4Ω between any two channels at +25°C, defined as RON(MAX) − RON(MIN). This specification ensures consistent gain and minimal channel-to-channel error in applications like multi-sensor data acquisition where calibration across channels is critical.
Is MAX4581LEEE+T pin-compatible with the 74HC4051?
Yes, the MAX4581LEEE+T is explicitly pin-compatible with the industry-standard 74HC4051 in 16-pin SO and QSOP packages. Pin assignments for VCC, GND, ENABLE, address lines (A/B/C), common output (X), and analog inputs (X0–X7) match identically, enabling direct replacement without PCB layout changes.
What is the off-isolation performance of MAX4581LEEE+T?
The MAX4581LEEE+T provides guaranteed off-isolation of −90dB at 1MHz, measured between the common output (X) and any unselected input (Xn). This high isolation minimizes signal coupling from inactive channels, making it suitable for applications such as audio mixing and sensitive sensor multiplexing where crosstalk must be suppressed below audible or measurement thresholds.
MAX4581LEEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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±):
- -
- 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):
- 2nA
- Crosstalk:
- -96dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
MAX4581LEEE+T FAQ
1.How can I place an order for MAX4581LEEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4581LEEE+T 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 MAX4581LEEE+T reliable?
The price and inventory of MAX4581LEEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4581LEEE+T is usually 5 days.
3.What payment methods are accepted for MAX4581LEEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4581LEEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4581LEEE+T?
MAX4581LEEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4581LEEE+T 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 MAX4581LEEE+T?
For technical support, including MAX4581LEEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4581LEEE+T requirements.
6.How does Aetrix verify that MAX4581LEEE+T is sourced from the original manufacturer or authorized distributors?
All MAX4581LEEE+T 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 MAX4581LEEE+T meets industry standards.
7.What is the process for return or replacement of MAX4581LEEE+T?
All MAX4581LEEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4581LEEE+T, 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 MAX4581LEEE+T part is unused and in its original packaging.
Return procedure for MAX4581LEEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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