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Analog Devices Inc./Maxim Integrated MAX337CUI+
- Part No.:
- MAX337CUI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX337CUI+.pdf
- Description:
- IC MUX DUAL 8:1 400OHM 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,854
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Product details
Overview
The MAX337CUI+ from Maxim Integrated is a dual 8-channel CMOS analog multiplexer designed to route one of eight differential input pairs (NO1A–NO8A/NO1B–NO8B) to two common bidirectional outputs (COMA/COMB) using a 3-bit binary address. It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, and 3.5pC typical charge injection. Used in precision data acquisition systems requiring rail-to-rail signal handling across ±4.5V to ±20V dual supplies or +4.5V to +30V single supply.
For engineers reviewing the MAX337CUI+ datasheet, MAX337CUI+ pinout, MAX337CUI+ application, or MAX337CUI+ equivalent, key selection criteria include verified off-leakage performance (<20pA), guaranteed charge injection (3.5pC typ), dual-supply compatibility, TTL/CMOS logic interface, and ESD protection >2000V per Method 3015.7.
Technical Context
The MAX337CUI+ implements a fully bidirectional, rail-to-rail analog switch architecture with independent A- and B-side 8-channel banks. Its CMOS decoder drives internal transmission gates controlled by A0/A1/A2 address lines and EN enable, supporting both multiplexing and demultiplexing modes.
All digital inputs are TTL/CMOS-compatible (0.8V to 2.4V thresholds) across full temperature range and supply voltages. The device operates with ±4.5V to ±20V dual supplies or +4.5V to +30V single supply (V− tied to GND), enabling flexible integration into industrial and test equipment signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 400Ω max at TA = +25°C; ensures minimal voltage drop and gain error in precision signal paths |
| NO-Off Leakage Current | <20pA at +25°C; critical for high-impedance sensor interfaces and low-current measurement accuracy |
| Charge Injection | 3.5pC typ; limits transient voltage kick at COM outputs during channel switching, preserving ADC sampling integrity |
| Supply Range | +4.5V to +30V single or ±4.5V to ±20V dual; supports wide-range industrial and test instrumentation power architectures |
| Transition Time | <500ns; enables fast channel switching in automated test equipment and real-time signal routing |
| ESD Protection | >2000V per Method 3015.7; enhances robustness during board handling and system-level ESD events |
| Logic Compatibility | TTL/CMOS inputs (0.8V/2.4V thresholds); simplifies interface with microcontrollers and FPGAs without level-shifting |
Pinout & Package
MAX337CUI+ uses a 28-pin TSSOP package (package code U28+2, outline 21-0066), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply voltage input | Accepts +4.5V to +30V (single) or up to +20V (dual); powers internal logic and switch circuitry |
| V− | Negative supply voltage input | Accepts −4.5V to −20V (dual); tied to GND for single-supply operation |
| GND | Logic ground reference | Reference for all digital inputs; must be stable and low-noise for reliable address decoding |
| EN | Enable control input | Active-high TTL/CMOS signal; disables all switches when low, reducing leakage and power |
| A0, A1, A2 | 3-bit binary address inputs | Select one of eight channels per bank (A or B); decoded internally to drive corresponding NMOS/PMOS gate pairs |
| COMA, COMB | Bidirectional analog outputs | Rail-to-rail capable; connect to downstream amplifiers, ADCs, or instrumentation circuits |
| NO1A–NO8A, NO1B–NO8B | Bidirectional analog inputs | Eight differential input pairs per bank; interchangeable as sources or sinks depending on signal flow direction |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail® Signal Handling | Supports analog signals from V− to V+ without clipping-enables full dynamic range utilization in ±15V systems |
| <10Ω On-Resistance Match | Ensures consistent gain and offset across channels in multi-channel calibration or averaging applications |
| <500ns Transition Time | Permits sub-microsecond channel reconfiguration in high-speed data loggers and automated test sequencers |
| Bidirectional Operation | Eliminates need for external signal direction logic; supports both mux and demux topologies in same footprint |
| Plug-In Upgrade for DG506/DG507 | Pins 1–28 match industry-standard 28-pin DIP/SO/SSOP/TSSOP layouts-no PCB redesign required for legacy replacement |
Applications
| Precision Data Acquisition | Precision Signal Routing |
|---|---|
Use Scenario: High-resolution multichannel thermocouple or strain gauge measurement system with cold-junction compensation and programmable gain. IC Role / Device Role / Timing Role: Dual-bank analog multiplexer selecting sensor inputs to a shared precision ADC front-end while maintaining channel isolation and low leakage. Use Value: Sub-20pA off-leakage prevents bias current errors in high-Z sensor bridges; 3.5pC charge injection avoids ADC sampling corruption during channel switching. | Use Scenario: Modular test instrument with user-configurable signal paths between arbitrary waveform generators, DUT interfaces, and digitizers. IC Role / Device Role / Timing Role: Reconfigurable signal router enabling dynamic interconnection of multiple analog sources and destinations under microcontroller control. Use Value: Rail-to-rail operation preserves full signal swing across ±15V test rails; <500ns transition time supports rapid test sequence execution. |
| Automated Test Equipment (ATE) | Industrial Process Monitoring |
Use Scenario: Semiconductor parametric tester requiring nanosecond-accurate timing control and low crosstalk between DUT pins. IC Role / Device Role / Timing Role: Precision analog switch matrix routing stimulus signals and response measurements with minimal path-dependent distortion. Use Value: −86dB crosstalk and −82dB off-isolation prevent signal coupling between adjacent test channels; TTL-compatible EN allows synchronous switching with test controller clocks. | Use Scenario: Distributed PLC I/O module aggregating analog inputs from pressure, flow, and temperature transmitters in harsh factory environments. IC Role / Device Role / Timing Role: Robust analog multiplexer interfacing 4–20mA and 0–10V field signals to isolated ADC subsystems. Use Value: >2000V ESD protection withstands industrial ESD events; wide supply range accommodates varied field power architectures including 24V DC and ±15V isolated supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX337CAI+ | Same electrical specs; SSOP-28 package (A28+1) vs. TSSOP-28 (U28+2); 0°C to +70°C temp grade identical | SSOP has larger pitch (0.65mm vs. 0.5mm) and different thermal resistance; requires PCB land pattern change | Select MAX337CAI+ only if SSOP footprint is already validated and TSSOP assembly capability is unavailable. |
| ADG507AKRZ | Pin-compatible 28-lead SOIC; 450Ω max RON, 25pA max off-leakage at +25°C, no specified charge injection value | Higher leakage and unspecified charge injection limit suitability for ultra-low-error precision acquisition | Choose ADG507AKRZ only where cost sensitivity outweighs leakage and charge-injection requirements. |
Compared with MAX337CUI+, MAX337CAI+ offers identical performance in a mechanically distinct SSOP package, while ADG507AKRZ provides pin-compatible SOIC packaging but with higher leakage and uncharacterized charge injection-making MAX337CUI+ preferable for metrology-grade signal routing where leakage and switching transients are design-critical.
Availability
MAX337CUI+ is available at Aetrix Electronics and suitable for precision data acquisition, automated test equipment, industrial process monitoring, and precision signal routing requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX337CUI+ 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, mixed-signal, and power management ICs for industrial, communications, computing, and consumer applications.
The MAX336/MAX337 product line delivers low-leakage, rail-to-rail CMOS analog multiplexers optimized for precision measurement, test instrumentation, and signal routing where leakage, charge injection, and supply flexibility are critical.
FAQ
What is the maximum operating temperature range for the MAX337CUI+?
The MAX337CUI+ is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is confirmed in the Ordering Information table and applies specifically to the C-suffix variants (e.g., MAX337CUI+, MAX337CWI+, MAX337CAI+). For extended ranges, consider MAX337EUI+ (−40°C to +85°C) or MAX337MJI (−55°C to +125°C), which use different suffixes and package options.
Does the MAX337CUI+ support single-supply operation?
Yes, the MAX337CUI+ supports single-supply operation from +4.5V to +30V. In this configuration, V− must be connected to GND. The device maintains full functionality-including TTL/CMOS-compatible logic inputs, rail-to-rail analog signal handling, and specified leakage and on-resistance-across the entire single-supply range, as verified in the Electrical Characteristics tables for +12V and +15V conditions.
Is the MAX337CUI+ pin-compatible with the DG507?
Yes, the MAX337CUI+ is explicitly documented as a pin-compatible upgrade for the DG507. The Pin Configurations section confirms identical 28-pin TSSOP (and DIP/SO/SSOP) pinouts, and the Benefits and Features list states "Plug-In Upgrade for Industry-Standard DG506/DG507." No PCB layout changes are required when replacing DG507 with MAX337CUI+ in existing designs.
What is the typical charge injection specification for the MAX337CUI+?
The MAX337CUI+ has a typical charge injection of 3.5pC, measured under CL = 100pF, VNO = 0V, RS = 0Ω, and TA = +25°C (Electrical Characteristics table, "Charge Injection" row). This value is guaranteed by design and is critical for minimizing voltage transients at the COM outputs during channel switching-especially in high-impedance sampling circuits feeding precision ADCs.
Can the MAX337CUI+ handle bipolar analog signals?
Yes, the MAX337CUI+ supports true bipolar analog signal handling. With dual supplies (e.g., ±15V), it passes signals from V− to V+, delivering rail-to-rail performance across the full ±15V range. The Analog Signal Range parameter is specified as ±15V under dual-supply conditions, and the device's CMOS transmission-gate architecture inherently supports bidirectional conduction with equal on-resistance in both directions.
MAX337CUI+ 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):
- 400Ohm
- Channel-to-Channel Matching (ΔRon):
- 5Ohm
- Voltage - Supply, Single (V+):
- 4.5V ~ 20V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 500ns, 500ns
- -3db Bandwidth:
- -
- Charge Injection:
- 3.5pC
- Channel Capacitance (CS(off), CD(off)):
- 2pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 20pA
- Crosstalk:
- -86dB @ 100kHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP
MAX337CUI+ FAQ
1.How can I place an order for MAX337CUI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX337CUI+ 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 MAX337CUI+ reliable?
The price and inventory of MAX337CUI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX337CUI+ is usually 5 days.
3.What payment methods are accepted for MAX337CUI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX337CUI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX337CUI+?
MAX337CUI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX337CUI+ 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 MAX337CUI+?
For technical support, including MAX337CUI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX337CUI+ requirements.
6.How does Aetrix verify that MAX337CUI+ is sourced from the original manufacturer or authorized distributors?
All MAX337CUI+ 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 MAX337CUI+ meets industry standards.
7.What is the process for return or replacement of MAX337CUI+?
All MAX337CUI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX337CUI+, 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 MAX337CUI+ part is unused and in its original packaging.
Return procedure for MAX337CUI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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