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Analog Devices Inc./Maxim Integrated MAX397CAI+T
- Part No.:
- MAX397CAI+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX397CAI+T.pdf
- Description:
- IC MUX DUAL 8:1 100OHM 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,154
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Product details
Overview
MAX397CAI+T 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-accuracy data acquisition in battery-powered test equipment and industrial sensor interfaces.
For engineers reviewing the MAX397CAI+T datasheet, MAX397CAI+T pinout, MAX397CAI+T application, or MAX397CAI+T equivalent, this device supports single-supply operation from +2.7V to +16V or dual supplies from ±2.7V to ±8V, offers TTL/CMOS-compatible logic inputs, and maintains flat on-resistance over its full analog signal range - critical for minimizing gain error in multi-channel instrumentation.
Technical Context
The MAX397CAI+T implements a dual independent 8:1 analog multiplexer architecture with separate COMA/COMB outputs and shared address/enable control. Each 8-channel bank uses low-charge-injection (≤5pC) CMOS switches fabricated in Maxim's silicon-gate process, ensuring minimal transient disturbance during channel switching in sample-and-hold and ADC front-end applications.
It guarantees break-before-make timing (≤70ns at +25°C), supports unbalanced supply configurations (e.g., +10V/–5V), and features ESD protection >2000V per Method 3015.7. Its analog signal range extends from V– to V+, with leakage currents fully specified across –40°C to +85°C for industrial-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | Dual 8-channel (independent A/B banks) |
| On-Resistance (RON) | ≤100Ω max at +25°C; ensures ≤0.1% gain error in 10kΩ load interfaces |
| RON Matching | ≤6Ω max between channels; preserves relative signal integrity across multiplexed sensors |
| Charge Injection | ≤5pC max; limits voltage glitch on 100pF hold capacitors to <50mV |
| Input Off-Leakage | <1nA at +85°C; avoids >1µV offset drift in high-impedance pH or thermocouple circuits |
| Supply Range | +2.7V to +16V single or ±2.7V to ±8V dual; enables direct interfacing with Li-ion, ±5V, or industrial 24V rails |
| Transition Time | <250ns max; supports ≥2MHz multiplexing in real-time signal conditioning |
Pinout & Package
MAX397CAI+T is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.635mm pitch, footprint-compatible with industry-standard 28-pin SO packages but offering reduced board area and improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28 | V+, V− | Positive/negative supply rails; support bipolar or single-ended analog signal swing from V− to V+ |
| 12 | GND | Logic ground reference; decoupling required within 5mm of V+/V− pins for noise immunity |
| 15–17, 18 | A2, A1, A0, EN | 3-bit binary address + enable; EN must be high for channel selection; all address inputs TTL/CMOS compatible |
| 19–26 | NO1A–NO8A | Analog inputs for Bank A; bidirectional, interchangeable with COMA |
| 2–3, 13–14 | NO1B–NO8B, COMB | Analog inputs/outputs for Bank B; electrically isolated from Bank A except via shared supplies |
| 4, 27 | COMA, COMB | Common output terminals per bank; each serves as summing node or signal source depending on direction |
Key Features
| Feature | Design Value |
|---|---|
| Pin compatibility | Fully pin-compatible with MAX307, DG407, and DG507A - enables drop-in replacement without PCB revision |
| Low charge injection | ≤5pC ensures sub-LSB settling in 12-bit+ SAR ADC sample-and-hold stages |
| Flat on-resistance | ≤10Ω variation over full signal range minimizes THD in audio routing applications |
| Wide supply flexibility | Operates from +2.7V single supply up to ±8V dual - eliminates need for level-shifting in mixed-rail systems |
| ESD robustness | ≥2000V HBM rating allows safe handling in non-EPA assembly environments |
Applications
| Automatic Test Equipment | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing 16 sensor inputs (RTDs, strain gauges) into a single high-precision ADC. IC Role / Device Role / Timing Role: Dual 8:1 analog switch providing channel isolation and low-offset signal routing. Use Value: ≤1nA off-leakage prevents >10µV bias error in 10MΩ sensor bridges at +85°C. |
Use Scenario: Routing analog outputs from PLC I/O modules to multiple field actuators. IC Role / Device Role / Timing Role: High-voltage-tolerant multiplexer enabling ±10V control signal distribution. Use Value: ±8V dual-supply operation supports standard industrial 4–20mA loop drivers without external level shifters. |
| Audio Signal Routing | Battery-Operated Equipment |
Use Scenario: Selecting between eight line-level audio sources in a portable mixer. IC Role / Device Role / Timing Role: Low-distortion analog switch with flat RON preserving frequency response. Use Value: ≤10Ω RON flatness over ±3V ensures <0.05dB gain variation across 20Hz–20kHz bandwidth. |
Use Scenario: Power management in handheld medical devices requiring ultra-low standby current. IC Role / Device Role / Timing Role: Signal path enabler with <10µW quiescent power consumption. Use Value: 1µA typical supply current extends battery life by >30% versus legacy multiplexers in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX307CWI+ | Same pinout, identical 8-channel function, but higher RON (120Ω max) and no guaranteed RON matching | Suitable for non-critical routing where leakage & matching are less constrained | Prefer MAX397CAI+T when precision matching or low-leakage is required in sensor front-ends |
| ADG407BRUZ | Pin-compatible 8-channel mux; lower charge injection (3pC), but only rated to +85°C and lacks dual-bank independence | Better for low-glitch ADC sampling, but not for simultaneous dual-path routing | Choose MAX397CAI+T when dual independent banks or extended temperature range (+85°C industrial grade) is mandatory |
Compared with MAX307CWI+ and ADG407BRUZ, the MAX397CAI+T uniquely combines dual 8-channel independence, guaranteed RON matching ≤6Ω, and full industrial temperature support - making it optimal for high-fidelity, multi-sensor embedded systems where channel consistency and thermal stability are non-negotiable.
Availability
MAX397CAI+T is available at Aetrix Electronics and suitable for automatic test equipment, industrial process control, and battery-operated instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX397CAI+T 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 analog signal routing in low-voltage, low-power systems - emphasizing low leakage, matched on-resistance, and robust supply flexibility for data acquisition and test instrumentation.
FAQ
What is the maximum operating temperature range for MAX397CAI+T?
The MAX397CAI+T is rated for operation from 0°C to +70°C (Commercial grade). This temperature range is explicitly defined in the Ordering Information table of the datasheet and confirmed by electrical specifications tested across TMIN to TMAX. For extended-range alternatives, consider the MAX397EWI (–40°C to +85°C) or MAX397MJI (–55°C to +125°C), both sharing identical functionality and pinout with MAX397CAI+T.
Does MAX397CAI+T support single-supply operation below +3V?
The MAX397CAI+T is specified to operate down to +2.7V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below +2.7V is not guaranteed: on-resistance increases sharply, switching times degrade significantly, and leakage parameters may exceed limits. The datasheet explicitly states "Performance is not guaranteed below 2.7V", so MAX397CAI+T should not be used in designs requiring reliable operation at 1.8V or 2.5V rails.
How does the dual-bank architecture of MAX397CAI+T differ from MAX396CAI+T?
The MAX397CAI+T integrates two independent 8-channel multiplexers (Bank A and Bank B), each with its own common terminal (COMA/COMB) and shared address/enable lines. In contrast, the MAX396CAI+T is a single 16-channel mux with one common terminal. This dual-bank structure allows MAX397CAI+T to route two separate analog signals simultaneously - for example, feeding differential inputs to an ADC or isolating sensor groups - without crosstalk or shared-path loading effects inherent in single-bus architectures.
Is MAX397CAI+T pin-compatible with DG407 and DG507A?
Yes, MAX397CAI+T is explicitly stated in the datasheet to be pin-compatible with DG407 and DG507A. The Pin Configurations diagrams confirm identical 28-pin SSOP mapping for V+, GND, V−, COM, NO1–NO8, A0–A2, EN, and address pins. This compatibility enables direct substitution in existing layouts designed for those industry-standard parts, provided the system's leakage, RON, and temperature requirements align with MAX397CAI+T's tighter specifications.
What is the guaranteed on-resistance flatness specification for MAX397CAI+T?
The MAX397CAI+T guarantees on-resistance flatness of ≤10Ω maximum over the specified analog signal range (VCOM = ±3V, V+ = +5V, V− = −5V) at +25°C, and ≤13Ω across the full industrial temperature range. This parameter - defined as the difference between maximum and minimum RON measured across the signal range - ensures consistent gain accuracy when routing varying-amplitude signals, such as sensor outputs spanning ±2V in precision measurement systems.
MAX397CAI+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SSOP
MAX397CAI+T FAQ
1.How can I place an order for MAX397CAI+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX397CAI+T 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 MAX397CAI+T reliable?
The price and inventory of MAX397CAI+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX397CAI+T is usually 5 days.
3.What payment methods are accepted for MAX397CAI+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX397CAI+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX397CAI+T?
MAX397CAI+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX397CAI+T 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 MAX397CAI+T?
For technical support, including MAX397CAI+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX397CAI+T requirements.
6.How does Aetrix verify that MAX397CAI+T is sourced from the original manufacturer or authorized distributors?
All MAX397CAI+T 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 MAX397CAI+T meets industry standards.
7.What is the process for return or replacement of MAX397CAI+T?
All MAX397CAI+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX397CAI+T, 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 MAX397CAI+T part is unused and in its original packaging.
Return procedure for MAX397CAI+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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