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Analog Devices Inc./Maxim Integrated MAX382CWN+
- Part No.:
- MAX382CWN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX382CWN+.pdf
- Description:
- IC MUX 8:1 100OHM 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,536
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Product details
Overview
The MAX382CWN+ from Maxim Integrated is a low-voltage, CMOS 1-of-8 analog multiplexer with latchable digital inputs, designed for precision signal routing in mixed-signal systems. It operates from a single +2.7V to +16.5V supply or dual ±3V to ±8V supplies, delivers ≤100Ω on-resistance (max), matches channels within 4Ω (max), and maintains <2.5nA off-leakage at +85°C - enabling reliable operation in battery-powered data-acquisition and audio routing applications.
For engineers reviewing the MAX382CWN+ datasheet, MAX382CWN+ pinout, MAX382CWN+ application, or MAX382CWN+ equivalent, key selection considerations include its latch-controlled channel selection, guaranteed on-resistance matching across all eight channels, charge injection ≤10pC, ESD protection >2000V, and compatibility with TTL/CMOS logic levels under both single- and dual-supply configurations.
Technical Context
The MAX382CWN+ integrates parallel N- and P-channel MOSFET switches per channel, driven by internal address decoders and transparent/latched control logic. Its WR (Write) and RS (Reset) strobes enable µP-bus interfacing without continuous address holding, supporting both transparent mode (WR low, RS high) and latched mode (WR high).
It supports analog signal ranges spanning V− to V+, with on-resistance flatness ≤13Ω and crosstalk ≤−92dB at 1MHz. The device guarantees performance over 0°C to +70°C, uses 18-pin wide SOIC packaging, and features independent COM and NO terminals with bidirectional signal flow - no distinction between input and output pins per datasheet note.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +16.5V single supply or ±3V to ±8V dual supply - enables direct integration into 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | ≤100Ω max at +25°C - ensures minimal voltage drop and signal attenuation in precision analog paths. |
| On-Resistance Matching (∆RON) | ≤4Ω max between channels - critical for gain-matching in multi-channel instrumentation and simultaneous sampling. |
| Charge Injection (VCTE) | ≤10pC max - limits voltage glitch on sample-and-hold capacitors, preserving ADC accuracy. |
| Off-Leakage Current | <2.5nA at +85°C - prevents signal corruption in high-impedance sensor interfaces and long-hold circuits. |
| ESD Protection | >2000V per Method 3015.7 - enhances robustness in handling and board-level assembly environments. |
| Logic Compatibility | TTL/CMOS-input compatible (VIH = 2.4V, VIL = 0.8V) - simplifies interface with microcontrollers and FPGAs. |
Pinout & Package
MAX382CWN+ is housed in an 18-pin Wide SOIC (SO) package (body width 7.5mm), RoHS-compliant and moisture-sensitive level 3. Pin numbering follows standard SOIC convention with pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | WR (Write) | Strobe input that latches current A0–A2 address; low enables transparent mode, high holds selected channel. |
| 2, 17 | A0, A1 | BCD address inputs selecting one of eight channels (A2 not used on MAX382; pin 16 is NC). |
| 3 | EN (Enable) | Active-high global enable; when low, all switches are forced open regardless of address or WR state. |
| 4 | V− | Negative supply rail; connect to GND for single-supply operation. |
| 5–8 | NO1–NO4 | Bidirectional analog signal inputs/outputs - interchangeable with NO5–NO8 and COM. |
| 9 | COM | Common analog terminal - bidirectional, serves as input or output depending on switch configuration. |
| 10–13 | NO8–NO5 | Bidirectional analog signal inputs/outputs - identical function to NO1–NO4; full 8-channel set. |
| 14 | V+ | Positive supply rail - supports up to +16.5V; must be powered before V− per sequencing recommendation. |
| 15 | GND | Ground reference for logic and analog sections - shared return path for supply and signals. |
| 16 | A2 / NC | No-connect on MAX382 (used only on MAX384); leave unconnected or tie to GND if unused. |
| 18 | RS (Reset) | Active-low reset that forces all switches open; required before WR pulse in latched mode. |
Key Features
| Feature | Design Value |
|---|---|
| Latchable address control | Eliminates need for continuous µP address bus drive - reduces firmware overhead and EMI from toggling address lines. |
| Guaranteed on-resistance matching | ≤4Ω max channel-to-channel variation - enables accurate ratiometric measurements in multi-sensor arrays. |
| Low charge injection | ≤10pC max - minimizes hold-step error in sample-and-hold circuits driving 12-bit+ ADCs. |
| Pin compatibility with DG428/DG429 | Direct replacement for legacy designs - allows drop-in upgrade without PCB revision. |
| Dual- and single-supply flexibility | Operates identically across ±5V, +5V, or +3.3V rails - simplifies power architecture in portable and industrial systems. |
Applications
| Audio Signal Routing | Low-Voltage Data-Acquisition Systems |
|---|---|
Use Scenario: Switching line-level or microphone signals between multiple codecs, amplifiers, or ADC inputs in portable audio devices. IC Role / Device Role / Timing Role: 1-of-8 bidirectional analog switch managing signal path selection under µP control with latched addressing. Use Value: Low on-resistance (≤100Ω) and low THD preserve audio fidelity; latch mode reduces µP I/O pin usage and bus activity. |
Use Scenario: Multiplexing outputs from 8 temperature, pressure, or strain sensors into a single ADC in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision analog mux providing channel isolation <−75dB and leakage <2.5nA at +85°C for stable DC measurements. Use Value: Guaranteed ∆RON ≤4Ω ensures consistent gain across channels; single +3.3V operation extends battery life. |
| Sample-and-Hold Circuits | Battery-Operated Systems |
Use Scenario: Selecting one of eight sensor inputs to charge a hold capacitor prior to ADC conversion in medical or test equipment. IC Role / Device Role / Timing Role: Low-charge-injection (≤10pC) switch minimizing voltage error during acquisition phase. Use Value: Predictable VCTE enables accurate error compensation; fast tON(EN) ≤275ns supports high-throughput sampling. |
Use Scenario: Managing power domains and signal paths in handheld meters, wearables, or remote sensors operating from coin cells or Li-ion batteries. IC Role / Device Role / Timing Role: Ultra-low quiescent current (<1µA I+/I−) analog switch enabling sleep-mode signal integrity. Use Value: Single-supply operation down to +2.7V extends usable battery range; ESD >2000V protects against field handling damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX382CPN+ | Same electrical specs and pinout, but in 18-pin plastic DIP package - larger footprint, higher thermal resistance. | Suitable for prototyping, through-hole assembly, or legacy DIP-based systems where SOIC reflow is unavailable. | Select MAX382CPN+ only when DIP mounting is required; MAX382CWN+ offers superior thermal performance and board density. |
| ADG408BRZ | 8-channel CMOS mux with 100Ω RON, but no latchable inputs - requires continuous address control and lacks WR/RS strobes. | Better suited for FPGA- or CPLD-driven systems with abundant I/O; unsuitable for µP-bus constrained designs needing latch mode. | Choose ADG408BRZ only if latch functionality is unnecessary and board layout accommodates additional address traces. |
Compared with MAX382CPN+, the MAX382CWN+ provides identical switching performance in a space-saving wide SOIC package with better thermal dissipation. Against ADG408BRZ, it adds critical latch/strobe control for µP systems but requires careful reset sequencing - making it optimal for embedded data loggers and portable instrumentation.
Availability
MAX382CWN+ is available at Aetrix Electronics and suitable for battery-operated systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for MAX382CWN+ 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, automotive, communications, and computing markets.
The MAX382CWN+ belongs to Maxim's precision analog multiplexer product line, engineered for low-distortion, low-leakage signal routing in portable and measurement-critical applications where latch control and supply flexibility are essential.
FAQ
What is the maximum analog signal range supported by the MAX382CWN+?
The MAX382CWN+ supports analog signals from V− to V+. With ±5V dual supplies, the range is −5V to +5V; with a +5V single supply (V− = GND), it is 0V to +5V. Operation outside these bounds risks exceeding absolute maximum ratings - always ensure VCOM and VNO remain within V− and V+.
Does the MAX382CWN+ require external pull-up or pull-down resistors on its logic inputs?
No - the MAX382CWN+ logic inputs (WR, EN, RS, A0, A1) are TTL/CMOS-compatible with defined VIH ≥2.4V and VIL ≤0.8V, and have input leakage <±0.1µA. External resistors are unnecessary unless needed for system-level noise immunity or default-state assurance during power-up.
How does the latch mode of the MAX382CWN+ reduce microprocessor resource usage?
In latch mode (WR high), the MAX382CWN+ holds the selected channel indefinitely without requiring the µP to maintain address lines. This frees up GPIO pins and eliminates address bus toggling - reducing firmware complexity, power consumption, and EMI in battery-powered systems using the MAX382CWN+.
Can the MAX382CWN+ be used with unbalanced supplies like +10V and −5V?
Yes - the MAX382CWN+ supports unbalanced supplies as long as |V+ − V−| ≤ 17V and each rail stays within its absolute maximum rating (V+ ≤ +17V, V− ≥ −17V). For example, +10V/V− = −5V yields a 15V total swing and is fully supported per the datasheet's "Operation with Supply Voltages Other than ±5V" section.
Is the MAX382CWN+ pin-compatible with the DG428, and what does that mean for design migration?
Yes - the MAX382CWN+ is explicitly pin-compatible with the DG428/DG429 per the datasheet's Features section. That means identical pin functions, placement, and PCB footprint, allowing direct replacement without layout changes - provided timing (e.g., tW, tS) and supply sequencing requirements are verified in the target system.
MAX382CWN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 2.7V ~ 16.5V
- Voltage - Supply, Dual (V±):
- ±3V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF, 40pF
- Current - Leakage (IS(off)) (Max):
- 200pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-SOIC
MAX382CWN+ FAQ
1.How can I place an order for MAX382CWN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX382CWN+ 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 MAX382CWN+ reliable?
The price and inventory of MAX382CWN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX382CWN+ is usually 5 days.
3.What payment methods are accepted for MAX382CWN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX382CWN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX382CWN+?
MAX382CWN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX382CWN+ 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 MAX382CWN+?
For technical support, including MAX382CWN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX382CWN+ requirements.
6.How does Aetrix verify that MAX382CWN+ is sourced from the original manufacturer or authorized distributors?
All MAX382CWN+ 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 MAX382CWN+ meets industry standards.
7.What is the process for return or replacement of MAX382CWN+?
All MAX382CWN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX382CWN+, 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 MAX382CWN+ part is unused and in its original packaging.
Return procedure for MAX382CWN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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