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Analog Devices Inc./Maxim Integrated MAX382CPN
- Part No.:
- MAX382CPN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX382CPN.pdf
- Description:
- IC MUX 8:1 100OHM 18DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,772
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Product details
Overview
MAX382CPN from Maxim Integrated is an 8-channel, single-ended analog multiplexer with latchable digital inputs, designed for low-voltage signal routing in precision data-acquisition and battery-powered systems. It operates from a +2.7V to +16.5V single supply or ±3V to ±8V dual supplies, delivers ≤100Ω on-resistance (max), guarantees ≤4Ω channel-to-channel on-resistance matching, and supports TTL/CMOS-compatible logic levels.
For engineers reviewing the MAX382CPN datasheet, MAX382CPN pinout, MAX382CPN application, or MAX382CPN equivalent, this page provides verified electrical specifications, package-confirmed pin functions, real-world use scenarios in low-leakage analog switching, and validated alternative parts for design continuity and supply resilience.
Technical Context
The MAX382CPN integrates parallel N- and P-channel MOSFET switches per channel, enabling bidirectional analog signal routing with minimal distortion. Its internal architecture includes address latches, a BCD decoder, and independent WR/RS strobe control logic-allowing transparent mode (WR low, RS high) or latched operation (WR high) without continuous microprocessor address bus drive.
It supports both single-supply (e.g., +5V, analog range 0V to +5V) and bipolar-supply (e.g., ±5V, analog range ±4.5V) configurations. Off-isolation exceeds –75dB, charge injection is limited to 10pC max, and off-leakage remains below 2.5nA at +85°C-critical for sample-and-hold and high-impedance sensor interfaces.
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 industrial ±5V systems without level-shifting. |
| On-Resistance (RON) | ≤100Ω max at +25°C - ensures minimal voltage drop and gain error in precision signal paths (e.g., <0.5% error at 10kΩ source impedance). |
| RON Matching | ≤4Ω max between channels - maintains consistent gain and timing across multi-channel scanning in DAQ systems. |
| Charge Injection | ≤10pC max - limits voltage glitch on sampled nodes, supporting accurate 12-bit+ acquisition in S/H circuits. |
| Off-Leakage Current | ≤2.5nA at +85°C - preserves capacitor hold voltage for >100ms in low-power sample-and-hold applications. |
| Logic Compatibility | TTL/CMOS-input thresholds (VIH ≥2.4V, VIL ≤0.8V) - allows direct interface with 3.3V/5V microcontrollers without external buffers. |
| ESD Protection | >2000V HBM - enhances robustness during board handling and system-level ESD events. |
Pinout & Package
MAX382CPN is supplied in an 18-pin plastic DIP package (0.300" wide), RoHS-compliant and rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | WR (Write) | Strobe input that latches current A0–A2 address when high; enables transparent mode when low and RS high. |
| 2, 16, 17 | A0, A1, A2 (Address) | 3-bit BCD input selecting one of eight NOx inputs to connect to COM; latched on WR rising edge. |
| 3 | EN (Enable) | Active-high global enable: all switches off when low, operational when high - used for power gating or cascaded mux control. |
| 4 | V− | Negative supply rail; tied to GND for single-supply operation; sets lower bound of analog signal range. |
| 5–8 | NO1–NO4 | Bidirectional analog inputs/outputs; routed to COM when selected - support signal sources up to ±4.5V with ±5V supplies. |
| 9 | COM | Common analog I/O terminal - serves as multiplexed output (in 1-of-8 mode) or shared input node for sensor arrays. |
| 10–13 | NO8–NO5 | Bidirectional analog inputs/outputs; complete the 8-channel set - pin order matches standard DIP layout for PCB routing clarity. |
| 14 | V+ | Positive supply rail; defines upper bound of analog signal range and powers internal logic and switch drivers. |
| 15 | GND | Ground reference for logic and analog sections - must be low-impedance to minimize crosstalk and offset drift. |
| 18 | RS (Reset) | Active-low master reset: forces all switches open regardless of EN or WR state - ensures safe power-up or fault recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Latchable address inputs | Eliminates need for continuous µP address bus drive; reduces system power and simplifies timing in embedded DAQ controllers. |
| Break-before-make switching | tOPEN ≥100ns guaranteed - prevents momentary shorting between channels during address changes, protecting sensitive analog sources. |
| Low on-resistance flatness | RFLAT(ON) ≤125Ω over full analog range - ensures consistent channel gain across ±4.5V input swing, critical for ratiometric measurements. |
| Guaranteed leakage specs | ICOM(OFF) ≤±2.5nA at +85°C - validated by 100% hot-temperature testing, not correlation, ensuring reliability in thermally stressed environments. |
| Pin compatibility | Direct replacement for DG428/DG429 and MAX368/MAX369 - enables drop-in upgrade path with improved leakage and charge injection performance. |
Applications
| Audio Signal Routing | Low-Voltage Data-Acquisition Systems |
|---|---|
Use Scenario: Switching line-level audio signals between multiple input sources (e.g., mic, aux, Bluetooth codec) in portable mixers or smart speakers. IC Role / Device Role / Timing Role: 8-channel analog multiplexer providing bidirectional, low-distortion signal path selection under microcontroller control. Use Value: ≤100Ω RON and ≤10pC charge injection prevent audible clicks/pops and preserve dynamic range above 95dB. |
Use Scenario: Scanning 8 thermistor or RTD sensor outputs into a single ADC channel in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Precision analog front-end switch enabling sequential measurement with minimal channel-to-channel gain variation. Use Value: ≤4Ω RON matching and ≤2.5nA off-leakage ensure <0.1°C measurement consistency across all 8 channels at +85°C ambient. |
| Sample-and-Hold Circuits | Automatic Test Equipment |
Use Scenario: Isolating a sampling capacitor from input sources during hold phase in precision ADC driver stages. IC Role / Device Role / Timing Role: Low-charge-injection analog switch controlling connection between signal source and hold capacitor. Use Value: 10pC max charge injection limits hold-step error to <1LSB for 12-bit, 1µF hold capacitors - eliminating need for trimming. |
Use Scenario: Routing test signals between DUT pins and measurement instruments (e.g., SMU, scope) in compact benchtop ATE fixtures. IC Role / Device Role / Timing Role: High-reliability, low-leakage multiplexer enabling automated pin-by-pin functional testing under programmable control. Use Value: >2000V HBM ESD rating and guaranteed leakage specs allow repeated probing without calibration drift or field failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DG428DN | Same 18-pin DIP package, but higher on-resistance (120Ω max) and no latchable inputs - requires continuous address bus drive. | Lacks WR/RS strobes; unsuitable for low-power µP systems needing transparent/latched mode flexibility. | Select DG428DN only if legacy footprint reuse is mandatory and latch functionality is unused. |
| MAX398CPN | Pin-compatible 8-channel mux with identical package, but no latch - operates in non-latching mode only; lower on-resistance (80Ω max). | Cannot retain channel selection without constant address input; better suited for high-speed, non-latched scanning. | Choose MAX398CPN when minimizing on-resistance is prioritized over power-saving latch control. |
Compared with DG428DN and MAX398CPN, the MAX382CPN uniquely combines latchable addressing, guaranteed low leakage, and industry-standard pinout - making it optimal for battery-operated DAQ and safety-critical hold circuits where address persistence and thermal stability are essential.
Availability
MAX382CPN 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 industrial temperature ranges and long production lifecycles.
Supply support for MAX382CPN 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, medical, and communications applications.
The MAX382CPN belongs to Maxim's low-voltage analog switch/multiplexer product line, engineered specifically for high-accuracy, low-power signal routing in portable instrumentation and sensor interface systems.
FAQ
What is the maximum analog signal range supported by MAX382CPN?
The MAX382CPN supports an analog signal range from V− to V+, limited by supply rails. With ±5V dual supplies, the usable range is ±4.5V; with +5V single supply (V− = GND), the range is 0V to +4.5V. This is defined by the device's absolute maximum ratings and verified in electrical characteristics tables for both dual- and single-supply conditions.
Does MAX382CPN require external pull-up resistors on its logic inputs?
No, MAX382CPN does not require external pull-ups. Its logic inputs (A0–A2, EN, WR, RS) are CMOS-compatible with VIH ≥2.4V and VIL ≤0.8V, and internal input structures draw ≤0.1µA at room temperature. Direct connection to 3.3V or 5V microcontroller GPIOs is fully supported without external biasing.
Can MAX382CPN operate with unbalanced supplies like +10V and −5V?
Yes, MAX382CPN supports unbalanced supplies. The datasheet explicitly states operation with "+10V and −5V" configurations, provided the total voltage difference (V+ − V−) does not exceed 17V and each rail stays within its absolute maximum rating (V+ ≤ +17V, V− ≥ −17V). Analog range adjusts accordingly (e.g., −5V to +10V).
How does the RESET (RS) pin function in MAX382CPN?
The RS pin is an active-low asynchronous reset: when pulled low, it forces all analog switches open regardless of EN, WR, or address states. This provides fail-safe channel isolation during power-up, brownout, or fault recovery. RS must be high for normal operation, and its timing (tOFF(RS) ≤200ns) ensures rapid re-enable after reset release.
Is MAX382CPN pin-compatible with MAX384 devices?
No, MAX382CPN is not pin-compatible with MAX384. While both share the same 18-pin DIP package and many supply/logic pins, their analog I/O pinouts differ: MAX382CPN uses NO1–NO8 and COM; MAX384 uses two independent 4-channel banks (NO1A–NO4A/COMA and NO1B–NO4B/COMB) with distinct pin assignments (e.g., COMA on pin 9, COMB on pin 10). PCB layout is not interchangeable.
MAX382CPN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 18-PDIP
MAX382CPN FAQ
1.How can I place an order for MAX382CPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX382CPN 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 MAX382CPN reliable?
The price and inventory of MAX382CPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX382CPN is usually 5 days.
3.What payment methods are accepted for MAX382CPN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX382CPN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX382CPN?
MAX382CPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX382CPN 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 MAX382CPN?
For technical support, including MAX382CPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX382CPN requirements.
6.How does Aetrix verify that MAX382CPN is sourced from the original manufacturer or authorized distributors?
All MAX382CPN 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 MAX382CPN meets industry standards.
7.What is the process for return or replacement of MAX382CPN?
All MAX382CPN units undergo pre-shipment inspection (PSI). If there is an issue with MAX382CPN, 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 MAX382CPN part is unused and in its original packaging.
Return procedure for MAX382CPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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