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Analog Devices Inc./Maxim Integrated MAX397CPI+
- Part No.:
- MAX397CPI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX397CPI+.pdf
- Description:
- IC MUX DUAL ANALOG CMOS 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,963
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Product details
Overview
MAX397CPI+ from Maxim Integrated is a dual 8-channel CMOS analog multiplexer designed for precision signal routing in low-voltage systems. It features 100Ω max on-resistance, ≤6Ω channel-to-channel RON matching, <1nA input off-leakage at +85°C, and operates from single +2.7V to +16V or dual ±2.7V to ±8V supplies. It serves as the analog switching core in battery-powered data acquisition and audio routing circuits.
For engineers reviewing the MAX397CPI+ datasheet, MAX397CPI+ pinout, MAX397CPI+ application, or MAX397CPI+ equivalent, this page delivers verified electrical specs, validated dual-8-channel pin mapping, temperature-stable leakage performance, and direct alternatives for industrial signal conditioning and test equipment design.
Technical Context
The MAX397CPI+ implements two independent 8:1 analog multiplexers (A and B) with shared address/enable logic, enabling simultaneous or selective routing of differential or parallel signal paths. Its silicon-gate CMOS process ensures guaranteed charge injection ≤5pC and ESD protection >2000V per Method 3015.7.
It supports break-before-make switching with ≤70ns tOPEN, transition times ≤250ns, and maintains flat on-resistance (≤10Ω variation) across its full analog signal range (V– to V+). Logic inputs are TTL/CMOS-compatible, with input leakage <0.1µA over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Configuration | Dual 8:1 - enables independent or synchronized routing of two analog signal groups without cross-talk coupling |
| On-Resistance (RON) | 100Ω max at +25°C - ensures minimal voltage drop and gain error in precision sensor interfaces |
| RON Matching | 6Ω max between channels - preserves amplitude accuracy when switching between calibrated sensor inputs |
| Charge Injection | 5pC max - limits voltage glitch on sample-and-hold capacitors during channel switching |
| Input Off-Leakage | <1nA at +85°C - prevents DC error accumulation in high-impedance medical or instrumentation front-ends |
| Supply Range | +2.7V to +16V (single) or ±2.7V to ±8V (dual) - supports operation from Li-ion batteries up to industrial rails |
| Transition Time | 250ns max - enables reliable multiplexing in 1MHz sampling systems with minimal settling delay |
Pinout & Package
MAX397CPI+ is housed in a 28-pin plastic DIP package (0.600" wide), with through-hole mounting and industry-standard footprint. Pin 12 is GND; pins 1 and 27 are V+ and V− respectively; pins 15–17 are A2/A1/A0 address lines; pin 18 is EN; pins 19–26 and 2–3/13–14 serve dual NOx and COMx signal paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Bias source for internal CMOS switches; must be powered before V− and logic inputs to prevent latch-up |
| V− | Negative supply rail | Defines lower analog signal limit; tied to GND in single-supply mode |
| GND (Pin 12) | Logic reference ground | Common return for digital control signals and substrate connection point |
| COMA / COMB | Output terminals for mux A and B | Bidirectional analog ports - may serve as input or output depending on signal flow direction |
| NO1A–NO8A / NO1B–NO8B | Analog input channels | Eight dedicated inputs per mux section; electrically identical and interchangeable with COMx |
| A0–A2 | Binary address inputs | Select one of eight channels per mux; A3 is not present - confirms true 8-channel (not 16-channel) architecture |
| EN | Active-high enable | Global control: logic high activates both muxes; low disconnects all channels (high-Z state) |
Key Features
| Feature | Design Value |
|---|---|
| Pin compatibility | Fully pin-compatible with MAX307, DG407, and DG507A - enables drop-in replacement without PCB revision |
| RON flatness | ≤10Ω variation over full signal range - eliminates gain nonlinearity in ±5V or 0–5V sensor interfaces |
| Low power consumption | <10µW quiescent - extends runtime in portable multimeters and handheld analyzers |
| Off-isolation | −75dB at 100kHz - suppresses crosstalk between active and inactive channels in RF-adjacent layouts |
| TTL/CMOS logic interface | VAL ≤0.8V, VAH ≥2.4V - interoperates directly with microcontrollers, FPGAs, and logic families without level-shifting |
Applications
| Automatic Test Equipment | Audio Signal Routing |
|---|---|
Use Scenario: Channel selection in modular PXI-based switch matrices for semiconductor parametric testing. IC Role / Device Role / Timing Role: Dual-path analog switch enabling concurrent DUT stimulus/response routing with sub-250ns channel switching. Use Value: 6Ω RON matching ensures measurement repeatability across 16 test points; <1nA leakage prevents bias drift during long-duration DC parameter sweeps. |
Use Scenario: Input source selection in professional mixer consoles with balanced line-level signals. IC Role / Device Role / Timing Role: Dual 8:1 analog mux routing mic preamp outputs to monitor paths or ADC inputs. Use Value: −92dB crosstalk and 5pC charge injection preserve stereo imaging integrity and eliminate pop/click artifacts during live switching. |
| Industrial Process Control | Low-Voltage Data Acquisition |
Use Scenario: Multiplexing thermocouple, RTD, and 4–20mA loop signals into a single 24-bit ΣΔ ADC. IC Role / Device Role / Timing Role: Precision analog switch front-end providing matched gain paths and low thermal EMF. Use Value: 100Ω RON and flatness ≤10Ω minimize gain error across temperature; dual-section layout reduces board space vs. two discrete 8:1 muxes. |
Use Scenario: Battery-powered environmental sensor node aggregating pH, conductivity, and dissolved oxygen readings. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling multi-sensor polling from 3.3V Li-SOCl₂ supply. Use Value: Single +2.7V operation and <10µW power draw extend field deployment to >5 years; <1nA leakage prevents offset drift in high-Z electrode interfaces. |
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 dual-8-channel function, but higher RON (120Ω typ) and looser RON matching (15Ω max) | Suitable for non-critical general-purpose switching where leakage & matching less constrained | Select MAX307CPI+ only if cost sensitivity outweighs precision requirements; verify RON flatness meets system gain linearity spec. |
| ADG1408BRUZ | Single 8:1 mux (not dual), 4.5Ω RON, but requires separate enable per channel and no V− pin | Requires two devices + additional logic to replicate MAX397CPI+ dual functionality | Choose ADG1408BRUZ only for designs needing ultra-low RON and accepting increased component count and layout complexity. |
Compared with MAX307CPI+, MAX397CPI+ delivers tighter RON matching and lower leakage for precision measurement; versus ADG1408BRUZ, it integrates dual-channel control and bipolar supply support in one package-reducing BOM count and simplifying power domain management.
Availability
MAX397CPI+ is available at Aetrix Electronics and suitable for automatic test equipment, industrial process control, and low-voltage data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX397CPI+ 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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX396/MAX397 product line was engineered specifically for low-voltage, high-precision analog signal routing-emphasizing matched on-resistance, ultra-low leakage, and robust ESD tolerance in harsh environments.
FAQ
What is the maximum operating temperature range for the MAX397CPI+?
The MAX397CPI+ is rated for operation from 0°C to +70°C, as indicated by the 'C' suffix in its part number. This commercial-grade temperature range is validated per the device's Absolute Maximum Ratings and Electrical Characteristics tables, with all key parameters-including leakage current and on-resistance-guaranteed across this span. The MAX397EPI+ variant extends to −40°C to +85°C.
Does the MAX397CPI+ support single-supply operation below +3V?
The MAX397CPI+ is specified to operate down to +2.7V per its absolute minimum supply rating, but performance is not guaranteed below that threshold. While functional behavior may persist at 1V–2.6V, on-resistance increases sharply and switching times degrade significantly-making such use unsupported for production designs. Always maintain V+ ≥ +2.7V for compliant operation of MAX397CPI+.
How does the MAX397CPI+ handle analog signal polarity?
The MAX397CPI+ supports fully bidirectional analog signal flow: COMA/COMB and NOxA/NOxB pins are interchangeable as inputs or outputs. With dual supplies (e.g., ±5V), it passes signals from −V− to +V+; with single supply (e.g., +5V/GND), it handles 0V to +5V. No internal polarity constraints exist-the device routes voltage regardless of sign, provided signals stay within V− and V+ rails.
Is the MAX397CPI+ pin-compatible with the MAX396 series?
No-MAX397CPI+ is not pin-compatible with MAX396 devices. The MAX396 is a 16-channel single-ended mux in the same 28-pin package, using A3–A0 address lines and a single COM pin. The MAX397CPI+ uses only A2–A0, dedicates pins to COMA/COMB and dual NO banks, and omits A3 and several NO pins. Their pinouts differ fundamentally despite shared package outline.
What is the guaranteed off-isolation performance of the MAX397CPI+?
The MAX397CPI+ guarantees −75dB off-isolation at 100kHz, measured with VEN = 0V, RL = 1kΩ, and worst-case channel (typically channel 4 due to proximity to COM). This specification ensures minimal signal bleed-through from active to inactive channels, critical for maintaining signal integrity in high-density multiplexed systems like automated test fixtures or multi-sensor DAQ modules.
MAX397CPI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX397CPI+ FAQ
1.How can I place an order for MAX397CPI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX397CPI+ 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 MAX397CPI+ reliable?
The price and inventory of MAX397CPI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX397CPI+ is usually 5 days.
3.What payment methods are accepted for MAX397CPI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX397CPI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX397CPI+?
MAX397CPI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX397CPI+ 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 MAX397CPI+?
For technical support, including MAX397CPI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX397CPI+ requirements.
6.How does Aetrix verify that MAX397CPI+ is sourced from the original manufacturer or authorized distributors?
All MAX397CPI+ 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 MAX397CPI+ meets industry standards.
7.What is the process for return or replacement of MAX397CPI+?
All MAX397CPI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX397CPI+, 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 MAX397CPI+ part is unused and in its original packaging.
Return procedure for MAX397CPI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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