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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:4,391
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Product details
Overview
The MAX397EPI+ from Maxim Integrated is a dual 8-channel, low-voltage CMOS analog multiplexer designed for precision signal routing in mixed-signal systems. It features 100Ω max on-resistance (RON), ≤6Ω RON matching between channels, and guaranteed RON flatness of ≤10Ω over ±3.5V signal range. Operating from ±2.7V to ±8V dual supplies or +2.7V to +16V single supply, it delivers fast switching (250ns max transition time) with <1nA input off-leakage at +85°C - ideal for battery-operated data acquisition and industrial process control.
For engineers reviewing the MAX397EPI+ datasheet, MAX397EPI+ pinout, MAX397EPI+ application, or MAX397EPI+ equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternative parts with documented differences, and supply-chain support tailored for OEM and embedded design programs.
Technical Context
The MAX397EPI+ implements a dual independent 8:1 analog multiplexer architecture with separate COMA/COMB outputs and shared address/enable logic (A0–A2, EN). Each 8-channel bank operates bidirectionally with CMOS-compatible digital inputs (VAL ≤ 0.8V, VAH ≥ 2.4V) and supports break-before-make switching (70ns max tOPEN) to prevent signal shorting during channel transitions.
Its silicon-gate process ensures low charge injection (5pC max), high off-isolation (−75dB), and ultra-low leakage (<2.5nA output off-leakage at +85°C), enabling accurate sampling in high-impedance sensor interfaces and sample-and-hold circuits without signal corruption from feedthrough or settling errors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Configuration | Dual 8:1 analog multiplexer - two independent banks (A/B), each with dedicated COM output and shared address/enable pins. |
| On-Resistance (RON) | 100Ω max at TA = +25°C (±5V supplies); enables minimal voltage drop and gain error in precision signal paths. |
| RON Matching | ≤6Ω max difference between any two channels - critical for ratiometric measurements and channel-to-channel calibration. |
| Charge Injection | 5pC max - limits voltage glitch on sampled hold capacitors, supporting <16-bit accuracy in data acquisition. |
| Off-Leakage Current | <1nA input off-leakage at +85°C - preserves integrity of high-Z sensor signals and extends battery life in portable instruments. |
| Supply Range | ±2.7V to ±8V dual or +2.7V to +16V single - supports operation from Li-ion battery (3.0V) up to industrial rails (±5V, ±12V). |
| Transition Time | 250ns max - ensures sub-microsecond channel switching for real-time signal routing in ATE and communications systems. |
Pinout & Package
MAX397EPI+ is housed in a 28-pin plastic DIP package (0.600" width), rated for −40°C to +85°C operation. Pin layout supports dual-bank signal separation with dedicated COMA/COMB outputs and shared address/enable logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28 | V+, V− | Positive/negative supply rails - must be powered before logic inputs; supports unbalanced supplies (e.g., +10V/−5V). |
| 12 | GND | Logic ground reference - connects to system digital ground; substrate tied to V+ per chip topology. |
| 15–17, 18 | A2, A1, A0, EN | 3-bit binary address + enable - controls selection of one of eight channels per bank; EN = low disables both banks. |
| 19–26 | NO1A–NO8A | Analog inputs for Bank A - bidirectional, interchangeable with COMA; routed to COMA when selected. |
| 2–3, 13–14 | NO1B–NO8B, COMB | Analog inputs/outputs for Bank B - physically isolated from Bank A to minimize crosstalk (−92dB typical). |
| 28, 2 | COMA, COMB | Common analog I/O terminals - each serves as output for its bank and input during bidirectional use. |
| 4–11 | N.C. | No internal connection - floating pins; no external tie required; electrically isolated from die. |
Key Features
| Feature | Design Value |
|---|---|
| Pin compatibility | Fully pin-compatible with MAX307, DG407, and DG507A - enables drop-in replacement without PCB redesign. |
| Low power consumption | <10μW quiescent power - reduces thermal load and extends runtime in always-on sensor nodes and portable test gear. |
| TTL/CMOS logic interface | 0.8V/2.4V logic thresholds - interoperable with standard microcontrollers and FPGAs without level-shifting circuitry. |
| ESD protection | >2000V per Method 3015.7 - withstands handling and board-level ESD events without latch-up or parameter shift. |
| Signal range flatness | RON flatness ≤10Ω over ±3V - maintains consistent gain and linearity across full analog input span. |
Applications
| Automatic Test Equipment | Audio Signal Routing |
|---|---|
|
Use Scenario: Multiplexing multiple DUT sensor inputs into a single ADC channel for sequential measurement. IC Role / Device Role / Timing Role: Dual-bank analog switch routing high-impedance thermocouple or strain gauge signals to precision SAR ADC. Use Value: ≤6Ω RON matching ensures channel-to-channel gain consistency; <1nA off-leakage prevents DC offset drift in µV-level measurements. |
Use Scenario: Selecting between eight microphone preamp outputs for dynamic mixing in studio audio hardware. IC Role / Device Role / Timing Role: Low-distortion analog path selector with bidirectional capability for send/return loop configuration. Use Value: 100Ω max RON and −92dB crosstalk preserve signal fidelity; 5pC charge injection avoids audible pop/click during switching. |
| Industrial Process Control | Battery-Operated Equipment |
|
Use Scenario: Scanning 16-channel RTD or thermistor array in PLC analog input module with cold-junction compensation. IC Role / Device Role / Timing Role: Precision multiplexer front-end enabling ratiometric measurement against stable reference voltage. Use Value: ≤10Ω RON flatness over temperature ensures linear response across −40°C to +85°C operating range. |
Use Scenario: Power-conscious signal routing in handheld multimeter or portable oscilloscope front-end. IC Role / Device Role / Timing Role: Low-leakage, low-power analog switch enabling >100-hour battery life while maintaining measurement accuracy. Use Value: <10μW quiescent power and <1nA off-leakage at +85°C directly extend usable runtime and reduce self-heating error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX307CPI+ | Same pinout, identical 8:1 dual-channel architecture, but rated only for 0°C to +70°C; RON = 120Ω max (vs. 100Ω for MAX397EPI+). | Suitable for commercial-grade instrumentation; not qualified for extended industrial temperature range. | Select MAX307CPI+ only if ambient operating temperature stays within 0°C–70°C and higher RON is acceptable. |
| ADG1208BRUZ | 8:1 single-channel (not dual); 125Ω RON; ±15V supply capable; requires separate enable per channel; no pin compatibility. | Used where single-bank routing suffices and higher voltage swing (>±8V) is needed; incompatible pinout requires layout change. | Choose ADG1208BRUZ only when ±15V operation is mandatory and dual-bank functionality is unnecessary. |
Compared with MAX397EPI+, MAX307CPI+ offers identical form-factor and function but lacks extended temperature qualification and has higher on-resistance, while ADG1208BRUZ trades dual-channel integration and pin compatibility for wider supply range and higher voltage tolerance - requiring PCB revision and firmware adaptation.
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, medical, and communications applications.
The MAX396/MAX397 product line targets high-accuracy signal routing in data acquisition and test systems, emphasizing low leakage, matched on-resistance, and robust ESD performance for reliable field operation.
FAQ
What is the operating temperature range of the MAX397EPI+?
The MAX397EPI+ is specified for −40°C to +85°C operation, making it suitable for industrial environments and outdoor equipment where ambient temperatures exceed commercial-grade limits. This rating is confirmed in the Ordering Information table and applies to the plastic DIP package variant. All electrical parameters - including on-resistance, leakage, and switching speed - are guaranteed across this full range.
Does the MAX397EPI+ support single-supply operation?
Yes, the MAX397EPI+ supports single-supply operation from +2.7V to +16V. When using a single supply, V− must be connected to GND. Performance remains fully specified down to +2.7V; operation below this voltage is not guaranteed. The device retains TTL/CMOS logic compatibility and low leakage even at minimum supply.
Is the MAX397EPI+ pin-compatible with the MAX307 series?
Yes, the MAX397EPI+ is explicitly stated as pin-compatible with the MAX307, DG407, and DG507A in the Benefits and Features section. Pin assignments for V+, GND, V−, COMA/COMB, NOxA/NOxB, A0–A2, and EN match exactly - enabling direct replacement without PCB modification.
What is the maximum analog signal range supported by the MAX397EPI+?
The MAX397EPI+ supports an analog signal range from V− to V+ under all supply conditions. With ±5V supplies, this yields a ±5V (−5V to +5V) range; with +5V/V− = GND, the range is 0V to +5V. Signal voltages beyond V+ or V− are clamped by internal diodes, limiting safe operation to within (V− − 2V) to (V+ + 2V) per Absolute Maximum Ratings.
How does charge injection affect system accuracy in MAX397EPI+ applications?
The MAX397EPI+ guarantees ≤5pC maximum charge injection, which - when coupled with a 100pF hold capacitor - produces ≤50mV switching glitch (ΔV = Q/C). This enables sub-16-bit accuracy in sample-and-hold circuits and minimizes settling time in precision data acquisition systems, especially when paired with low-leakage switches and buffered inputs.
MAX397EPI+ 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:
- 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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