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Analog Devices Inc./Maxim Integrated MAX382EPN
- Part No.:
- MAX382EPN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX382EPN.pdf
- Description:
- IC MUX 8:1 100OHM 18DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
MAX382EPN 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), ≤4Ω channel-to-channel matching, and guarantees <2.5nA off-leakage at +85°C - enabling reliable operation in battery-powered data-acquisition and audio routing applications.
For engineers reviewing the MAX382EPN datasheet, MAX382EPN pinout, MAX382EPN application, or MAX382EPN equivalent, this page provides verified electrical specifications, temperature-rated performance (–40°C to +85°C), package-confirmed pin functions, and two validated alternative parts for design continuity and sourcing flexibility.
Technical Context
The MAX382EPN integrates parallel N- and P-channel MOSFET switches per channel, supporting bidirectional analog signal flow between COM and any of eight NO terminals. Its internal decoder, address latches, and WR/RS strobe logic enable microprocessor-bus interfacing without continuous address holding.
It features guaranteed break-before-make timing (tOPEN ≥ 100ns), low charge injection (≤10pC), and ESD protection >2000V (HBM), all while maintaining TTL/CMOS logic compatibility and stable on-resistance flatness (≤13Ω) across its full analog signal range (VCOM, VNO = V− to V+).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +16.5V single or ±3V to ±8V dual - supports wide input voltage flexibility without level-shifting circuitry |
| On-Resistance (RON) | ≤100Ω max at +25°C - ensures minimal signal attenuation and gain error in precision sensor or audio paths |
| RON Matching | ≤4Ω max between channels - critical for matched-gain multi-channel instrumentation and calibration systems |
| Off-Leakage Current | <2.5nA at +85°C - preserves accuracy in high-impedance sample-and-hold and battery-monitoring circuits |
| Charge Injection | ≤10pC max - limits voltage glitch on sampled nodes, reducing need for post-switch settling compensation |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded systems and automotive cabin electronics |
| ESD Rating | >2000V HBM - enhances robustness during board handling and system integration |
Pinout & Package
MAX382EPN is supplied in an 18-pin plastic DIP package (0.300" wide), with through-hole mounting and industry-standard footprint. Pin functions are electrically validated per Maxim's official datasheet (Rev. 0, 5/95).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 17 | WR (Write) | Latches current BCD address on falling edge; enables transparent mode when low and RS high |
| 2, 16 | A0, A1 (Address) | Binary-select inputs for channel 0–7; A2 not used on MAX382 (dedicated to MAX384 dual mux) |
| 3 | EN (Enable) | Global enable/disable control; all channels off when low - essential for power gating and cascaded mux designs |
| 4 | V− | Negative supply rail; tied to GND for single-supply operation; defines lower analog signal limit |
| 5–8, 10–13 | NO1–NO4, NO5–NO8 | Bidirectional analog inputs - interchangeable as sources or sinks; support rail-to-rail signal switching |
| 9 | COM | Common analog terminal - connects to selected NO channel; bidirectional, low-capacitance path |
| 14 | V+ | Positive supply rail; sets upper analog signal limit and powers internal logic and switch drivers |
| 15 | GND | Logic and analog reference ground - must be low-impedance for leakage and noise control |
| 18 | RS (Reset) | Asynchronous reset; forces all switches OFF regardless of EN/WR state - critical for safe power-up sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible replacement | Direct drop-in for DG428/DG429, DG528/DG529, and MAX368/MAX369 - eliminates PCB redesign |
| Low-power operation | <300µW typical quiescent power - extends battery life in portable test equipment and handheld meters |
| Guaranteed RON flatness | ≤13Ω over full analog range - maintains consistent gain and linearity across signal swing |
| TTL/CMOS logic interface | Compatible with 0.8V/2.4V thresholds - interfaces directly with 3.3V/5V microcontrollers and FPGAs |
| Break-before-make timing | tOPEN ≥ 100ns - prevents momentary short-circuits during channel transitions in sensitive analog paths |
Applications
| Battery-Operated Systems | Audio Signal Routing |
|---|---|
Use Scenario: Portable multimeter front-end switching between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: 8-channel analog multiplexer selecting sensor inputs or calibration references under microcontroller control via WR/RS strobes. Use Value: Low on-resistance and leakage preserve measurement accuracy; latchable inputs reduce MCU I/O overhead and bus contention. |
Use Scenario: Channel selection in professional audio mixer ICs routing line-level signals between input banks and DSP processing blocks. IC Role / Device Role / Timing Role: Bidirectional analog switch managing signal flow between balanced/unbalanced sources and ADC/DAC interfaces. Use Value: ≤10pC charge injection minimizes audible pop/click artifacts; rail-to-rail analog range supports ±5V audio swing. |
| Low-Voltage Data-Acquisition Systems | Sample-and-Hold Circuits |
Use Scenario: Industrial sensor hub aggregating thermocouple, RTD, and strain gauge outputs into a shared ADC channel. IC Role / Device Role / Timing Role: Precision multiplexer with matched RON ensuring consistent gain across all 8 sensor channels before digitization. Use Value: ≤4Ω RON matching eliminates inter-channel gain error; –40°C to +85°C rating ensures field reliability. |
Use Scenario: Input selection stage preceding a high-speed sample-and-hold amplifier in automated test equipment (ATE). IC Role / Device Role / Timing Role: Fast-enable analog switch isolating hold capacitor from source impedance during acquisition phase. Use Value: tON(EN) ≤ 275ns and guaranteed break-before-make prevent hold capacitor corruption during switching. |
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 |
|---|---|---|---|
| MAX382EWN | Same die, 18-pin wide SO package - smaller footprint, surface-mount only | Preferred for space-constrained PCBs; thermal resistance differs slightly (derate 9.52mW/°C vs. 11.11mW/°C) | Select MAX382EWN when reflow assembly and board area optimization are priorities over through-hole serviceability. |
| DG428EY | Industry-standard pinout, same 18-pin DIP, but rated only to +70°C (not –40°C to +85°C) | Not suitable for extended-temperature industrial deployments; lacks guaranteed charge injection spec | Choose DG428EY only for commercial-grade applications where ambient temperature stays below +70°C. |
Compared with MAX382EPN, MAX382EWN offers identical electrical performance in a compact SO package ideal for modern layouts, while DG428EY provides legacy compatibility at the cost of temperature range and precision specs - making MAX382EPN the optimal choice for ruggedized, high-fidelity analog routing.
Availability
MAX382EPN 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 temperature ranges and long production lifecycles.
Supply support for MAX382EPN 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 MAX382EPN belongs to Maxim's precision analog multiplexer product line, engineered for low-distortion, low-leakage signal routing in portable and industrial measurement systems demanding rail-to-rail operation and latch-controlled addressing.
FAQ
What is the maximum analog signal range supported by the MAX382EPN?
The MAX382EPN supports analog signals from V− to V+. With dual ±5V supplies, that is ±4.5V; with a single +5V supply, it is 0V to +4.5V. The device guarantees operation across its full specified supply range (+2.7V to +16.5V single or ±3V to ±8V dual), and the analog range tracks supply rails - confirmed in Electrical Characteristics Tables 1–3 of the MAX382/MAX384 datasheet.
Does the MAX382EPN require external pull-up resistors on its logic inputs?
No, the MAX382EPN does not require external pull-ups. Its WR, RS, EN, A0, and A1 inputs are TTL/CMOS-compatible with guaranteed recognition of logic-high (≥2.4V) and logic-low (≤0.8V) levels across the full operating temperature range. Input leakage is ≤±0.1µA, so internally biased inputs maintain valid states without external components - verified in the "Digital Logic Input" section of the datasheet.
Can the MAX382EPN be used with unbalanced supplies like +10V and –5V?
Yes, the MAX382EPN supports unbalanced supplies. The absolute maximum rating specifies V+ to V− ≤ +17V, and application notes confirm operation with asymmetric rails such as +10V/–5V. Analog signal range remains V− to V+, and on-resistance and leakage remain within spec - provided total differential voltage stays within limits and sequencing guidelines (V+ first, then V−) are followed.
How does the latch functionality of the MAX382EPN reduce microcontroller resource usage?
The MAX382EPN's WR strobe latches the current A0/A1 address, allowing the microcontroller to release its address bus after one write cycle. This eliminates the need to hold address lines stable during signal settling - freeing GPIO pins and reducing firmware overhead. In transparent mode (WR low, RS high), it behaves like a non-latching mux; in latched mode (WR high), the selected channel remains active indefinitely until rewritten or reset - as detailed in the Functional Diagrams and Truth Tables.
Is the MAX382EPN pinout compatible with the MAX384 dual 4-channel mux?
No, the MAX382EPN and MAX384 are not pin-compatible. While both use 18-pin DIP/SO packages, MAX382EPN has dedicated NO1–NO8 and single COM pins, whereas MAX384 splits I/O across COMA/COMB and two independent 4-channel banks (NO1A–NO4A, NO1B–NO4B). Pin 9 is COM on MAX382EPN but COMA on MAX384; pins 10–13 serve NO5–NO8 on MAX382EPN but NO4B–NO1B on MAX384 - confirmed in the Pin Configurations diagram and Pin Description table.
MAX382EPN 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 18-PDIP
MAX382EPN FAQ
1.How can I place an order for MAX382EPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX382EPN 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 MAX382EPN reliable?
The price and inventory of MAX382EPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX382EPN is usually 5 days.
3.What payment methods are accepted for MAX382EPN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX382EPN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX382EPN?
MAX382EPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX382EPN 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 MAX382EPN?
For technical support, including MAX382EPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX382EPN requirements.
6.How does Aetrix verify that MAX382EPN is sourced from the original manufacturer or authorized distributors?
All MAX382EPN 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 MAX382EPN meets industry standards.
7.What is the process for return or replacement of MAX382EPN?
All MAX382EPN units undergo pre-shipment inspection (PSI). If there is an issue with MAX382EPN, 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 MAX382EPN part is unused and in its original packaging.
Return procedure for MAX382EPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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