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Analog Devices Inc./Maxim Integrated MAX397EPI
- Part No.:
- MAX397EPI
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
MAX397EPI.pdf
- Description:
- IC MUX DUAL 8:1 100OHM 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,070
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Product details
Overview
MAX397EPI from Maxim Integrated is a dual 8-channel CMOS analog multiplexer designed for precision signal routing in low-voltage systems. It delivers ≤100Ω on-resistance (max), ≤6Ω channel-to-channel RON matching, and <1nA input off-leakage at +85°C, enabling high-fidelity data acquisition in battery-powered test equipment and industrial sensor interfaces.
For engineers reviewing the MAX397EPI datasheet, MAX397EPI pinout, MAX397EPI application, or MAX397EPI equivalent, this page provides verified electrical specifications, thermal performance across –40°C to +85°C, dual/single-supply operating margins (+2.7V to +16V or ±2.7V to ±8V), and validated pin-compatible alternatives for signal-path redesign.
Technical Context
The MAX397EPI implements a fully differential dual-8-channel architecture with independent COMA/COMB outputs and shared A0–A2 address inputs plus EN enable. Its silicon-gate CMOS process ensures guaranteed charge injection ≤5pC and ESD protection >2000V per Method 3015.7.
It supports break-before-make switching (tOPEN ≤70ns), fast transition times (tTRANS ≤250ns), and maintains flat on-resistance (≤10Ω variation) over full analog signal range (VNO/VCOM = V− to V+), critical for precision sample-and-hold and multichannel ADC front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | VCOM/VNO = V− to V+; supports rail-to-rail signal handling with ±8V dual or +16V single supply |
| On-Resistance (RON) | ≤100Ω max at +25°C; ensures minimal voltage drop and gain error in 12-bit+ measurement paths |
| RON Matching | ≤6Ω max between channels; preserves amplitude consistency across multiplexed sensor inputs |
| Charge Injection | ≤5pC max; limits voltage glitch on hold capacitors in sampling circuits |
| Off-Leakage Current | <1nA at +85°C (input); prevents drift in high-impedance transducer interfaces |
| Supply Range | +2.7V to +16V single or ±2.7V to ±8V dual; enables operation from Li-ion batteries or industrial ±5V rails |
| Switching Speed | tTRANS ≤250ns; supports multiplexing rates up to ~2MHz in time-critical DAQ systems |
Pinout & Package
MAX397EPI is housed in a 28-pin plastic DIP package (0.600" wide), rated for –40°C to +85°C operation. Pin layout supports dual independent 8-channel banks with shared address/enable logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28 | V+, V− | Positive/negative supply rails; support bipolar or single-ended operation with internal ESD clamps |
| 12 | GND | Logic ground reference; decoupling required near V+/V− pins to suppress switching noise |
| 18 | EN | Active-high enable; disables all switches when low, reducing system power leakage |
| 15–17 | A0–A2 | 3-bit binary address inputs; select one of eight channels per bank (COMA/COMB) |
| 19–26 | NO1A–NO8A | Analog inputs for Bank A; bidirectional, matched impedance, compatible with ±10V signals |
| 2–3, 13–14 | NO1B–NO8B | Analog inputs for Bank B; electrically isolated from Bank A except via shared supplies |
| 28, 2 | COMA, COMB | Dedicated output terminals per bank; allow simultaneous routing of two independent signal streams |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-channel banks | Enables parallel signal routing (e.g., differential pair selection or redundant path switching) without cross-talk |
| Guaranteed RON flatness ≤10Ω | Maintains consistent gain across full input voltage swing, critical for linear transducer conditioning |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V thresholds directly from microcontrollers or FPGAs-no level-shifting needed |
| Low power consumption <10μW | Reduces self-heating in sealed enclosures and extends battery life in portable instrumentation |
| ESD protection >2000V | Withstands handling and board-level transients without external protection components |
Applications
| Automatic Test Equipment | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing dozens of sensor inputs (thermocouples, RTDs) into a single high-resolution ADC in modular PLC I/O modules. IC Role / Device Role / Timing Role: Dual-bank analog switch providing synchronized channel selection with sub-250ns settling for scan rates ≥50kSPS. Use Value: Eliminates need for separate mux ICs per sensor type, reducing BOM count and PCB area while maintaining channel-to-channel gain match ≤0.01%. |
Use Scenario: Routing analog outputs from multiple DACs to valve actuators or motor drives in distributed control systems. IC Role / Device Role / Timing Role: Precision signal path selector with ≤100Ω RON and <1nA leakage, preserving 16-bit control resolution over temperature. Use Value: Enables hot-swappable I/O modules with guaranteed signal integrity across –40°C to +85°C ambient range. |
| Audio Signal Routing | Battery-Operated Equipment |
Use Scenario: Channel selection in professional audio mixers requiring low THD and crosstalk <–92dB between inputs. IC Role / Device Role / Timing Role: Low-capacitance (CCOM(ON) = 68pF) analog switch minimizing high-frequency attenuation and inter-channel coupling. Use Value: Delivers studio-grade audio routing without external buffering, supporting 20Hz–20kHz bandwidth with flat response. |
Use Scenario: Power management in handheld medical devices (e.g., ECG monitors) where supply voltage varies from 3.0V to 4.2V during battery discharge. IC Role / Device Role / Timing Role: Single-supply analog switch operating down to +2.7V with stable RON and leakage specs across voltage range. Use Value: Maintains consistent signal fidelity and low power draw (<1μA supply current) throughout battery life cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX397EWI | Same die, Wide SO-28 package; 12.5mW/°C derating vs. DIP's 14.29mW/°C | Better thermal performance in high-density layouts; requires reflow soldering | Select for space-constrained PCBs needing improved power dissipation at elevated ambient temperatures |
| ADG708BRUZ | Single 8-channel, 4Ω RON, but only +1.8V to +5.5V supply; no dual-bank or ±8V capability | Limited to low-voltage digital systems; lacks extended temp range and high-voltage tolerance | Choose only for compact 3.3V embedded designs where dual-bank functionality is unnecessary |
Compared with MAX397EWI, the MAX397EPI offers identical electrical performance in a through-hole DIP package ideal for prototyping and industrial environments with vibration; versus ADG708BRUZ, it provides broader supply flexibility, dual independent banks, and extended temperature rating-making it suitable for ruggedized instrumentation rather than consumer electronics.
Availability
MAX397EPI is available at Aetrix Electronics and suitable for automatic test equipment, industrial process control, and battery-operated equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX397EPI 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 and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX396/MAX397 product line targets high-accuracy signal routing in data acquisition, test instrumentation, and sensor interface systems where low leakage, matched on-resistance, and wide supply range are essential.
FAQ
What is the maximum guaranteed on-resistance for MAX397EPI at full temperature range?
The MAX397EPI guarantees ≤125Ω on-resistance (RON) across its full operating temperature range of –40°C to +85°C under specified conditions (INO = 1mA, VCOM = ±3.5V, V+ = 5V, V− = –5V). This value ensures predictable voltage drop and gain accuracy in precision analog paths even at temperature extremes.
Does MAX397EPI support single-supply operation below +3V?
The MAX397EPI is not guaranteed to operate below +2.7V. While functional behavior may occur down to +1V, on-resistance increases significantly and switching times degrade beyond specification-so designs must maintain ≥+2.7V for compliant performance. The MAX397EPI datasheet explicitly states performance is not guaranteed below this threshold.
How does the dual-bank architecture of MAX397EPI differ from MAX396EPI?
The MAX397EPI integrates two independent 8-channel banks (COMA/NO1A–NO8A and COMB/NO1B–NO8B) sharing address/enable lines, enabling concurrent routing of two signal streams. In contrast, the MAX396EPI is a single 16-channel device with one common COM pin-making MAX397EPI optimal for differential or redundant signal paths where isolation between banks is required.
What is the absolute maximum voltage rating for MAX397EPI analog pins?
The MAX397EPI allows analog inputs/outputs (NOx, COMA, COMB) to swing from (V− − 2V) to (V+ + 2V), provided the total V+ to V− differential remains ≤17V. For example, with V+ = +5.5V and V− = –5.5V, analog signals may safely reach –7.5V to +7.5V-enabling robust overvoltage tolerance in noisy industrial environments.
Is MAX397EPI pin-compatible with industry-standard multiplexers?
Yes, the MAX397EPI is pin-compatible with the MAX307, DG407, and DG507A in the 28-pin DIP package. This allows direct replacement in legacy designs without PCB modification, preserving existing layout, decoupling, and signal integrity-provided supply voltages and timing constraints align with MAX397EPI's extended operating range.
MAX397EPI 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:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.8Ohm
- Voltage - Supply, Single (V+):
- 2.7V ~ 16V
- Voltage - Supply, Dual (V±):
- ±2.7V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF, 80pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-PDIP
MAX397EPI FAQ
1.How can I place an order for MAX397EPI through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX397EPI 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 MAX397EPI reliable?
The price and inventory of MAX397EPI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX397EPI is usually 5 days.
3.What payment methods are accepted for MAX397EPI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX397EPI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX397EPI?
MAX397EPI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX397EPI 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 MAX397EPI?
For technical support, including MAX397EPI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX397EPI requirements.
6.How does Aetrix verify that MAX397EPI is sourced from the original manufacturer or authorized distributors?
All MAX397EPI 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 MAX397EPI meets industry standards.
7.What is the process for return or replacement of MAX397EPI?
All MAX397EPI units undergo pre-shipment inspection (PSI). If there is an issue with MAX397EPI, 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 MAX397EPI part is unused and in its original packaging.
Return procedure for MAX397EPI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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