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Analog Devices Inc./Maxim Integrated MAX382CWN+T
- Part No.:
- MAX382CWN+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX382CWN+T.pdf
- Description:
- IC MUX 8:1 100OHM 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,591
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Product details
Overview
MAX382CWN+T from Maxim Integrated is an 8-channel, single-ended analog multiplexer with latchable digital inputs, designed for precision signal routing in low-voltage systems. It operates from a +2.7V to +16.5V single supply or ±3V to ±8V dual supplies, delivers ≤100Ω on-resistance (max), ≤4Ω channel-to-channel matching, and guarantees <2.5nA off-leakage at +85°C - enabling reliable use in battery-powered data acquisition and audio switching.
For engineers reviewing the MAX382CWN+T datasheet, MAX382CWN+T pinout, MAX382CWN+T application, or MAX382CWN+T equivalent, key selection considerations include its latch-controlled 1-of-8 switching architecture, ±5V-compatible analog signal range (±4.5V), guaranteed charge injection ≤10pC, and compatibility with TTL/CMOS logic levels - all critical for embedded instrumentation and automated test equipment design.
Technical Context
The MAX382CWN+T implements a CMOS transmission-gate switch array with parallel N- and P-channel MOSFETs per channel, enabling rail-to-rail analog signal handling across its full supply range. Its internal latch and decoder accept 3-bit binary address (A0–A2) plus EN and WR control signals to select and hold one of eight bidirectional analog paths without continuous bus addressing.
It supports transparent mode (WR low, RS high) for nonlatching operation like the MAX398, and latched mode (WR high) for persistent channel selection. Reset (RS) forces all switches open independently of address state, while enable (EN) provides global on/off control - essential for cascading configurations and power-sensitive system states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +16.5V single supply or ±3V to ±8V dual supply - supports direct integration into mixed-voltage industrial and portable systems without level-shifting. |
| On-Resistance (RON) | ≤100Ω max at +25°C - ensures minimal signal attenuation and gain error in precision sensor and DAC/ADC interface applications. |
| RON Matching | ≤4Ω max between channels - enables accurate ratiometric measurements and matched gain paths in multi-channel data acquisition. |
| Off-Leakage Current | <2.5nA at +85°C - preserves signal integrity in high-impedance sample-and-hold and battery-monitoring circuits over temperature. |
| Charge Injection | ≤10pC max - limits voltage glitch on sampled nodes, critical for low-distortion audio routing and high-resolution ADC front-ends. |
| Logic Compatibility | TTL/CMOS-input compatible (VIH ≥ 2.4V, VIL ≤ 0.8V) - interfaces directly with microcontrollers and FPGAs without external buffers. |
| Analog Signal Range | ±4.5V with ±5V supplies - allows full-swing switching of bipolar sensor outputs and op-amp signals without clipping. |
Pinout & Package
MAX382CWN+T is housed in an 18-pin Wide SO (SOIC-W) package, 0.300" wide, with standard gull-wing leads and JEDEC MS-013AC footprint. Pin 1 is marked by a beveled corner or dot; thermal pad is not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | WR (Write) | Latch strobe: falling edge captures current A0–A2 address; low enables transparent mode. |
| 2, 17 | A0, A1 | Binary address inputs (LSB and middle bit); A2 is on pin 16 - selects one of eight NOx inputs to connect to COM. |
| 3 | EN (Enable) | Global enable: low disables all switches regardless of address - used for power gating or cascade synchronization. |
| 4 | V− | Negative supply input; tie to GND for single-supply operation - defines lower analog rail and bias point. |
| 5–8 | NO1–NO4 | Bidirectional analog inputs/outputs - channels 1–4; routed to COM when selected. |
| 9 | COM | Common analog I/O terminal - single-ended output/input node shared across all eight channels. |
| 10–13 | NO8–NO5 | Bidirectional analog inputs/outputs - channels 5–8; numbered in reverse order for PCB layout optimization. |
| 14 | V+ | Positive supply input - sets upper analog rail; must be ≥ V− + 2.7V for valid operation. |
| 15 | GND | Digital ground reference - connects to system ground plane; separate from analog ground unless star-point tied. |
| 16 | A2 | MSB address input - completes 3-bit selection (A2A1A0) for 1-of-8 decoding. |
| 18 | RS (Reset) | Asynchronous reset: low forces all switches open - overrides EN and address, ensuring safe default state. |
Key Features
| Feature | Design Value |
|---|---|
| Latchable address control | Eliminates need for continuous microcontroller address bus drive - reduces EMI and firmware overhead in embedded systems. |
| Pin compatibility with DG428/DG429 | Enables drop-in replacement in legacy designs using industry-standard 8-channel mux footprints and logic timing. |
| Guaranteed low charge injection (≤10pC) | Minimizes sampling errors in precision S/H circuits and prevents audible clicks in audio path switching. |
| ESD protection >2000V (HBM) | Provides robust handling during board assembly and field service without requiring additional protection circuitry. |
| Low power consumption (<300µW) | Supports always-on monitoring functions in battery-operated IoT sensors and portable medical devices. |
Applications
| Audio Signal Routing | Low-Voltage Data-Acquisition Systems |
|---|---|
Use Scenario: Switching microphone inputs, line-level sources, or headphone outputs in portable audio mixers and voice recorders. IC Role / Device Role: Bidirectional 1-of-8 analog switch with latch control - routes signals without distortion or pop/click artifacts. Use Value: ≤10pC charge injection and ≤100Ω RON ensure flat frequency response and minimal THD+N in 20Hz–20kHz audio paths. |
Use Scenario: Multiplexing outputs from multiple temperature, pressure, or strain sensors into a single ADC channel. IC Role / Device Role: Precision analog front-end switch - selects sensor signals while maintaining signal fidelity and offset stability. Use Value: ≤4Ω RON matching and <2.5nA leakage at +85°C preserve measurement accuracy across temperature and channel count. |
| Sample-and-Hold Circuits | Battery-Operated Systems |
Use Scenario: Isolating the hold capacitor from input sources during acquisition phase in precision data loggers. IC Role / Device Role: Low-leakage, low-charge-injection switch - controls connection between sensor and S/H capacitor. Use Value: ≤2.5nA off-leakage prevents capacitor discharge drift; ≤10pC injection avoids hold-step errors in 16-bit+ systems. |
Use Scenario: Managing power domains and signal paths in handheld test meters, wearable health monitors, and remote sensors. IC Role / Device Role: Ultra-low-power analog switch - enables selective sensor activation and signal routing under tight energy budgets. Use Value: <300µW quiescent power and +2.7V minimum supply extend battery life while supporting full analog functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-channel analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX398CWN+T | No latch; requires continuous address input; lower RON (60Ω typ) but higher leakage (5nA @ +85°C). | Better for high-speed scanning; unsuitable where address bus persistence is needed. | Select MAX398CWN+T only if latch-free operation and faster settling are prioritized over low-leakage hold performance. |
| DG428DN-T1-E3 | Same pinout and function; slightly higher RON (120Ω max); no guaranteed charge injection spec. | Legacy industrial designs; less suitable for audio or precision S/H due to uncharacterized charge injection. | Choose DG428DN-T1-E3 for cost-sensitive replacements where ≤10pC injection is not required. |
Compared with MAX382CWN+T, MAX398CWN+T offers faster switching but lacks latching and has higher leakage, while DG428DN-T1-E3 matches pinout but omits critical charge injection guarantees - making MAX382CWN+T the optimal choice for battery-powered, precision, or audio-critical applications requiring deterministic state retention.
Availability
MAX382CWN+T is available at Aetrix Electronics and suitable for battery-operated systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended production lifecycles.
Supply support for MAX382CWN+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 MAX382CWN+T belongs to Maxim's precision analog multiplexer product line, engineered for low-leakage, low-distortion signal routing in portable and measurement-critical systems operating from ultra-low to wide-range supplies.
FAQ
What is the maximum analog signal range supported by the MAX382CWN+T?
The MAX382CWN+T supports an analog signal range from V− to V+, up to ±4.5V with ±5V supplies or 0V to +4.5V with +5V single supply. This rail-to-rail capability allows full-swing switching of sensor outputs and op-amp signals without clipping, provided V+ and V− remain within absolute maximum ratings (−0.3V to +17V referenced to GND).
Does the MAX382CWN+T require external pull-up resistors on its logic inputs?
No, the MAX382CWN+T does not require external pull-ups on WR, EN, RS, or address pins. Its TTL/CMOS-compatible inputs have defined thresholds (VIH ≥ 2.4V, VIL ≤ 0.8V) and low input current (±0.1µA typical), allowing direct connection to microcontroller GPIOs or FPGA outputs without additional components.
Can the MAX382CWN+T operate with unbalanced supplies such as +10V and −5V?
Yes, the MAX382CWN+T supports unbalanced supplies - for example, +10V and −5V - as long as the difference between V+ and V− does not exceed 17V and both remain within their respective absolute maximum ratings. The analog signal range adjusts accordingly, spanning from V− to V+.
How does the reset (RS) function interact with the enable (EN) and write (WR) controls in the MAX382CWN+T?
In the MAX382CWN+T, RS is asynchronous and dominant: when RS is low, all switches open regardless of EN or WR state. EN provides global on/off control, while WR toggles between transparent (WR low) and latched (WR high) modes. Only when RS and EN are high and WR is low does the device respond to address changes in real time.
Is the MAX382CWN+T pin-compatible with the MAX382CPN DIP version?
Yes, the MAX382CWN+T (18-pin Wide SO) shares identical pin numbering, signal assignment, and electrical behavior with the MAX382CPN (18-pin Plastic DIP). Both operate over 0°C to +70°C and support the same supply ranges, logic levels, and timing specifications - enabling direct PCB footprint substitution where space and thermal constraints allow.
MAX382CWN+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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+T FAQ
1.How can I place an order for MAX382CWN+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX382CWN+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 MAX382CWN+T reliable?
The price and inventory of MAX382CWN+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX382CWN+T is usually 5 days.
3.What payment methods are accepted for MAX382CWN+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX382CWN+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX382CWN+T?
MAX382CWN+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX382CWN+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 MAX382CWN+T?
For technical support, including MAX382CWN+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX382CWN+T requirements.
6.How does Aetrix verify that MAX382CWN+T is sourced from the original manufacturer or authorized distributors?
All MAX382CWN+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 MAX382CWN+T meets industry standards.
7.What is the process for return or replacement of MAX382CWN+T?
All MAX382CWN+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX382CWN+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 MAX382CWN+T part is unused and in its original packaging.
Return procedure for MAX382CWN+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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