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Analog Devices Inc./Maxim Integrated MAX4531CWP+
- Part No.:
- MAX4531CWP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4531CWP+.pdf
- Description:
- IC SWITCH SP4T X 2 75OHM 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,780
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Product details
Overview
The MAX4531CWP+ from Maxim Integrated is a low-voltage, CMOS analog switch IC configured as two independent 4-channel multiplexers (2×4:1), featuring dual enable inputs (EN1/EN2), address latching (LE), and three address lines (ADDA/ADDB/ADDC). It operates from ±2V to ±6V dual supplies or +2V to +12V single supply, delivers rail-to-rail signal handling, exhibits 150Ω max on-resistance at +5V, and supports <1µW quiescent power - ideal for precision data acquisition and battery-powered test equipment.
For engineers reviewing the MAX4531CWP+ datasheet, MAX4531CWP+ pinout, MAX4531CWP+ application, or MAX4531CWP+ equivalent, this page provides verified technical context, real-world switching performance metrics, package-specific layout guidance, and validated alternative options for industrial signal routing designs requiring TTL/CMOS-compatible control and sub-150ns enable timing.
Technical Context
The MAX4531CWP+ implements two fully independent 4:1 analog multiplexer sections (COMA/NO0A–NO3A and COMB/NO0B–NO3B), each with dedicated enable (EN1/EN2), shared address latching (LE), and binary address decoding (ADDA/ADDB). Address latching isolates channel selection from input glitches, enabling stable switching in noisy environments.
Its CMOS transmission-gate architecture ensures bidirectional signal flow, rail-to-rail analog voltage support (VCOM/VNO = V− to V+), and matched on-resistance (ΔRON ≤ 8Ω) across channels. ESD protection exceeds 2kV per Method 3015.7, and leakage remains ≤1nA at +25°C with dual ±4.5V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | Two independent 4:1 analog multiplexers (2×4:1), not shared common or interleaved |
| Supply Range | ±2V to ±6V dual or +2V to +12V single - supports legacy ±5V and modern low-voltage systems |
| On-Resistance (RON) | 150Ω max at +5V supply - ensures minimal signal attenuation in 50Ω–1kΩ impedance paths |
| On-Resistance Matching (ΔRON) | 8Ω max between channels - critical for gain-matched multi-channel instrumentation |
| Enable Turn-On/Off Time | tON(EN) = 150ns, tOFF(EN) = 120ns at ±4.5V - enables high-speed channel sequencing in ATE |
| Rail-to-Rail Signal Handling | VCOM/VNO spans full supply rails (V− to V+) - preserves DC accuracy and dynamic range |
| Logic Compatibility | TTL/CMOS thresholds (0.8V/2.4V) at +5V - eliminates level-shifting in mixed-signal microcontroller interfaces |
Pinout & Package
MAX4531CWP+ uses a 20-pin wide SO (Small Outline) package (SOIC-W), 7.5mm body width, 0.65mm lead pitch, RoHS-compliant, with exposed pad not present. Pin 1 marked by beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive analog/digital supply | Drives internal CMOS switches and logic; sets upper analog signal limit (V− to V+) |
| V− | Negative analog supply | Connect to GND for single-supply operation; sets lower analog signal limit |
| GND | Digital ground reference | Reference for logic inputs only; isolated from analog signal path |
| LE | Address latch enable | Latches ADDA/ADDB state on rising edge; decouples address stability from control timing |
| EN1 / EN2 | Independent section enables | Active-high enables for MUX-A and MUX-B; allows asynchronous channel activation |
| ADDA / ADDB | Binary address inputs | Selects one of four NOx inputs per section (00–11); latched by LE |
| COMA / COMB | Common terminals | Bidirectional analog I/O ports - may serve as input or output depending on system topology |
| NO0A–NO3A / NO0B–NO3B | Normally-open switch terminals | Four analog inputs per section; connected to COMx when selected; interchangeable with NC pins |
Key Features
| Feature | Design Value |
|---|---|
| PIN-COMPATIBLE WITH 74HC4352 | Direct drop-in replacement for industry-standard dual 4:1 mux - no PCB redesign required |
| RAIL-TO-RAIL® SIGNAL HANDLING | Supports analog signals from V− to V+ without clipping - preserves full dynamic range in sensor front-ends |
| LOW CHARGE INJECTION (1.5pC TYP) | Minimizes voltage glitch on sampled-hold nodes - essential for high-resolution ADC drivers |
| 2kV ESD PROTECTION (HBM) | Robust handling of board-level ESD events - reduces need for external protection in handheld test gear |
| <1µW QUIESCENT POWER | Negligible standby current - extends battery life in portable DMMs and field sensors |
Applications
| Automated Test Equipment (ATE) | Data Acquisition Systems |
|---|---|
|
Use Scenario: High-speed channel scanning across 16 sensor inputs using synchronized enable and address control. IC Role / Device Role / Timing Role: Dual 4:1 mux routes analog sensor outputs to a single ADC; LE latching prevents metastability during scan transitions. Use Value: 150ns enable timing and 8Ω RON matching ensure <0.01% gain error across all 8 scanned channels at 100ksps. |
Use Scenario: Multiplexing thermocouple, RTD, and voltage inputs into a precision delta-sigma ADC. IC Role / Device Role / Timing Role: Provides rail-to-rail, low-leakage (≤1nA) analog switching with matched on-resistance for calibrated gain stages. Use Value: 150Ω max RON and <1nA off-leakage at +25°C maintain µV-level accuracy in 24-bit measurement systems. |
| Battery-Powered Portable Instruments | Avionics Signal Routing |
|
Use Scenario: Low-power handheld multimeter selecting between AC/DC voltage, current, and resistance ranges. IC Role / Device Role / Timing Role: Enables zero-crossing detection and range switching with <1µW quiescent draw and ±2V minimum supply. Use Value: Single +3V operation and sub-1µW power allow >500 hours runtime on AA batteries without compromising signal fidelity. |
Use Scenario: Redundant flight-control signal distribution across dual-redundant sensor buses. IC Role / Device Role / Timing Role: Isolates primary and backup analog sensor paths using independent EN1/EN2 enables and break-before-make timing. Use Value: 4ns break-before-make interval prevents momentary short-circuits during failover, meeting DO-160 Section 22 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG732BRUZ | Single 16:1 mux (not dual 4:1); 4Ω RON at +3V; no address latching; SPI interface instead of parallel logic | Requires microcontroller firmware control; unsuitable for direct 74HC4352 pin replacement or latch-based timing | Choose when system-level flexibility outweighs pin compatibility and latch timing simplicity |
| TS5A3159DCKR | Single SP4T switch; 0.75Ω RON at +3V; no enable latching; 1.65V–5.5V supply; 300MHz bandwidth | Lacks dual-section architecture and address decoding - cannot replicate MAX4531CWP+'s parallel 2×4:1 functionality | Prefer for ultra-low-RON single-path routing where dual independent control is unnecessary |
Compared with ADG732BRUZ and TS5A3159DCKR, the MAX4531CWP+ uniquely delivers pin-compatible 74HC4352 replacement capability, hardware-address latching, and true dual independent 4:1 routing - making it the only option that preserves legacy board layouts while supporting deterministic, glitch-free channel selection in safety-critical analog systems.
Availability
MAX4531CWP+ is available at Aetrix Electronics and suitable for automated test equipment, portable instrumentation, and avionics signal routing requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX4531CWP+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.
The MAX4530/MAX4531/MAX4532 family was designed specifically for low-voltage, rail-to-rail analog signal routing in space-constrained, low-power, and high-accuracy applications - emphasizing pin compatibility, leakage control, and robust ESD tolerance.
FAQ
What is the maximum operating temperature range for the MAX4531CWP+?
The MAX4531CWP+ is rated for 0°C to +70°C ambient operation, as indicated by the 'C' grade suffix in its part number. This commercial-grade temperature range is validated per Maxim's datasheet specifications and applies to all electrical parameters unless otherwise noted in derating curves. The device is not qualified for extended industrial (−40°C to +85°C) operation - for that, the MAX4531EWP variant must be selected.
Does the MAX4531CWP+ support single-supply operation below +5V?
Yes, the MAX4531CWP+ supports single-supply operation down to +2V, with functional operation confirmed at +1.7V (though with degraded RON and timing). At +3V supply, typical on-resistance rises to 600Ω and transition time increases to 350ns - values explicitly characterized in the datasheet's "Single +3V Supply" section. These trade-offs must be accounted for in low-voltage portable designs.
How does the address latching (LE) function interact with EN1 and EN2 in the MAX4531CWP+?
In the MAX4531CWP+, LE operates independently of EN1 and EN2: it captures and holds ADDA/ADDB states on its rising edge, freezing channel selection regardless of subsequent address changes. EN1 and EN2 then gate the latched selection - enabling or disabling each 4:1 section asynchronously. This separation allows glitch-free channel updates even when EN signals toggle mid-scan.
Is the MAX4531CWP+ pin-compatible with the 74HC4352 across all package types?
Yes - the MAX4531CWP+ is explicitly specified as pin-compatible with the 74HC4352 in 20-pin SO (SOIC-W), DIP, and SSOP packages. Pin mapping, signal names (EN1/EN2/ADDA/ADDB/COMA/COMB/NO0A–NO3A/NO0B–NO3B), and electrical timing (tON/tOFF, tBBM) match the 74HC4352 specification, enabling direct substitution without layout modification.
What is the off-isolation performance of the MAX4531CWP+ at 1MHz?
At 1MHz, the MAX4531CWP+ delivers −65dB off-isolation (VISO), measured between COMx and an unselected NOx terminal under 50Ω conditions. This value is worst-case for channel 4 due to proximity to COM, as documented in Note 7 of the datasheet. Off-isolation degrades approximately 20dB per decade above 1MHz, reaching −45dB at 10MHz.
MAX4531CWP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 75Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1.5pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 15pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -92dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MAX4531CWP+ FAQ
1.How can I place an order for MAX4531CWP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4531CWP+ 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 MAX4531CWP+ reliable?
The price and inventory of MAX4531CWP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4531CWP+ is usually 5 days.
3.What payment methods are accepted for MAX4531CWP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4531CWP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4531CWP+?
MAX4531CWP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4531CWP+ 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 MAX4531CWP+?
For technical support, including MAX4531CWP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4531CWP+ requirements.
6.How does Aetrix verify that MAX4531CWP+ is sourced from the original manufacturer or authorized distributors?
All MAX4531CWP+ 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 MAX4531CWP+ meets industry standards.
7.What is the process for return or replacement of MAX4531CWP+?
All MAX4531CWP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4531CWP+, 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 MAX4531CWP+ part is unused and in its original packaging.
Return procedure for MAX4531CWP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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