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Analog Devices Inc./Maxim Integrated MAX337EAI+
- Part No.:
- MAX337EAI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX337EAI+.pdf
- Description:
- IC MUX DUAL 8:1 400OHM 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:217
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Product details
Overview
MAX337EAI+ from Maxim Integrated is a dual 8-channel CMOS analog multiplexer designed to route one of eight differential inputs (A or B side) to its respective common output (COMA or COMB) under 3-bit binary address control. It features ≤400Ω on-resistance, <20pA NO-off leakage at +25°C, 3.5pC typical charge injection, ±4.5V to ±20V dual-supply operation, and rail-to-rail bidirectional signal handling - enabling precision signal routing in automated test equipment and data acquisition systems.
For engineers reviewing the MAX337EAI+ datasheet, MAX337EAI+ pinout, MAX337EAI+ application, or MAX337EAI+ equivalent, key selection criteria include guaranteed low leakage across -40°C to +85°C, TTL/CMOS-compatible enable and address inputs, break-before-make switching, and ESD protection >2000V per Method 3015.7 - all critical for high-accuracy analog front-end design.
Technical Context
The MAX337EAI+ implements a dual independent 8:1 analog mux architecture with separate A- and B-side channels, each controlled by shared A0–A2 address lines and individual EN enables. Its BiCMOS process ensures matched on-resistance (<10Ω channel-to-channel), low charge injection (3.5pC typ), and sub-500ns transition time under ±15V supplies.
All digital inputs (A0–A2, EN) are TTL/CMOS-compatible (0.8V to 2.4V thresholds) over full temperature range and supply voltages (±4.5V to ±18V). The device supports single-supply operation (V− tied to GND) and unbalanced rails (e.g., +24V/−5V), with analog signal range limited only by V+ and V− rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | Dual 8-channel: two independent 8:1 muxes (A-side and B-side) |
| On-Resistance (max) | 400Ω at TA = +25°C, VCOM = ±10V - ensures minimal gain error in precision gain-setting or sensor interface paths |
| NO-Off Leakage (max) | 0.02nA at +25°C - preserves accuracy in high-impedance measurement circuits (e.g., pH sensors, strain gauges) |
| Charge Injection (typ) | 3.5pC - limits voltage glitch on sampled-hold nodes, critical for 16-bit+ ADC front-ends |
| Supply Range | ±4.5V to ±20V dual or +4.5V to +30V single - supports industrial ±15V and automotive 24V systems |
| Transition Time (max) | 500ns - enables multiplexing of signals up to ~1MHz without significant settling distortion |
| ESD Protection | >2000V HBM per Method 3015.7 - reduces need for external protection in benchtop test fixtures |
Pinout & Package
MAX337EAI+ is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, RoHS-compliant lead-free finish (+ suffix), and thermal pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply voltage input | Bias rail for internal logic and switch driver - must be ≥ |V−| + 4.5V for stable operation |
| V− | Negative supply voltage input | Reference for negative analog swing; tie to GND for single-supply use |
| GND | Logic ground reference | Return path for digital control circuitry - isolate from analog ground to minimize noise coupling |
| EN | Enable input (active-high) | Global enable for both A- and B-side muxes - drives all switches into high-Z when low |
| A0–A2 | 3-bit binary address inputs | Selects one of eight channels per side; synchronous across A/B outputs |
| COMA / COMB | Common analog outputs (A-side / B-side) | Bidirectional, rail-to-rail-capable nodes - connect to ADC input or amplifier feedback path |
| NO1A–NO8A / NO1B–NO8B | Analog inputs (A-side / B-side) | Interchangeable input/output terminals - support differential signal routing between two domains |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail bidirectional signal handling | Supports analog signals spanning V− to V+, enabling direct interface with op-amps and ADCs without level-shifting |
| Break-before-make switching | Guaranteed tOPEN ≥ 10ns prevents momentary shorting during channel transitions - essential for fault-tolerant power monitoring |
| TTL/CMOS-compatible control inputs | Operates reliably with microcontroller GPIOs across full temperature and supply range - eliminates need for level translators |
| Low on-resistance matching (≤10Ω) | Minimizes gain mismatch in multi-channel instrumentation amplifiers or programmable gain arrays |
| Plug-in upgrade for DG507 | Pins 1–28 match DG507 footprint and function - allows drop-in replacement without PCB redesign in legacy test systems |
Applications
| Precision Data Acquisition | Precision Signal Routing |
|---|---|
Use Scenario: Multiplexing 16 thermocouple or RTD inputs into a single 24-bit sigma-delta ADC in an environmental monitoring system. IC Role / Device Role / Timing Role: Dual 8:1 analog switch providing channel selection with <20pA off-leakage to prevent sensor bias current errors. Use Value: Enables 0.005% measurement accuracy over -40°C to +85°C without calibration drift from leakage-induced offset. | Use Scenario: Routing differential analog signals between multiple sensor conditioning stages and a central FPGA-based processing unit. IC Role / Device Role / Timing Role: Bidirectional differential mux isolating signal paths while preserving common-mode rejection via matched COMA/COMB outputs. Use Value: Maintains >86dB crosstalk suppression and <10Ω RON matching across all 16 channels for consistent gain staging. |
| Automated Test Equipment | Medical Instrumentation |
Use Scenario: Configuring stimulus/sense paths in a PXI-based semiconductor parametric tester with 100+ DUT channels. IC Role / Device Role / Timing Role: High-voltage tolerant (±20V) analog switch enabling DC parametric measurements (VGS, IDSS) across MOSFET families. Use Value: Delivers <500ns transition time and >2000V ESD robustness - reducing handler downtime and fixture recalibration frequency. | Use Scenario: Selecting among ECG electrode pairs and calibration references in a portable patient monitor with battery-powered analog front-end. IC Role / Device Role / Timing Role: Low-charge-injection (3.5pC) dual mux minimizing transient artifacts during lead-switching in real-time waveform display. Use Value: Prevents false arrhythmia detection by limiting switching-induced baseline jumps to <10µV on 100pF sampling capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1408BRUZ | Single 8:1 mux (not dual); 4.5Ω RON (lower), but only +3V to +40V single-supply - no dual-rail support | Best for low-RON single-domain routing; unsuitable for ±15V bipolar signal chains | Select when ultra-low on-resistance is prioritized over dual-channel independence and bipolar supply capability |
| DG507ACJ+ | Industry-standard pinout; 450Ω RON (higher), 10pC charge injection, no guaranteed ESD rating | Legacy drop-in where MAX337EAI+ upgrades are not feasible; higher leakage limits resolution in precision apps | Choose only for cost-sensitive, non-critical routing where leakage & ESD are not design constraints |
Compared with ADG1408BRUZ and DG507ACJ+, the MAX337EAI+ uniquely delivers dual independent 8:1 routing, guaranteed low leakage down to -40°C, and robust ±20V dual-supply operation - making it optimal for high-fidelity, temperature-stable, and fault-resilient analog signal management.
Availability
MAX337EAI+ is available at Aetrix Electronics and suitable for precision data acquisition, automated test equipment, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX337EAI+ 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, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX336/MAX337 family was engineered specifically for low-leakage, high-voltage analog multiplexing in metrology-grade systems - emphasizing parameter stability over temperature, minimal charge injection, and seamless DG506/DG507 replacement.
FAQ
What is the operating temperature range of the MAX337EAI+?
The MAX337EAI+ is rated for operation from -40°C to +85°C, as indicated by the "E" grade in its part number. This extended industrial temperature range ensures reliable performance in demanding environments such as factory automation controllers and outdoor test instrumentation. All electrical specifications - including leakage current, on-resistance, and switching time - are guaranteed across this full range.
Does the MAX337EAI+ support single-supply operation?
Yes, the MAX337EAI+ supports single-supply operation: connect V− to GND and apply +4.5V to +30V to V+. In this configuration, the analog signal range extends from 0V to V+, enabling compatibility with microcontroller-based systems and battery-powered devices. Note that on-resistance increases slightly compared to dual-supply mode, and transition time may lengthen at lower voltages (e.g., +5V).
Is the MAX337EAI+ pin-compatible with the DG507?
Yes, the MAX337EAI+ is a pin-compatible upgrade for the industry-standard DG507. It shares identical 28-pin DIP/SO/SSOP pinouts and logic-level compatibility, allowing direct replacement without PCB modification. Key improvements include lower on-resistance (400Ω vs. 450Ω), reduced charge injection (3.5pC vs. 10pC), and enhanced ESD protection (>2000V vs. unspecified).
What is the maximum analog signal voltage the MAX337EAI+ can handle?
The MAX337EAI+ supports analog signals ranging from V− to V+, with absolute maximum ratings of (V− − 0.3V) to (V+ + 0.3V) on all NO and COM pins. For example, with ±15V supplies, signals from -15V to +15V are fully supported. Exceeding these limits risks damage due to internal diode conduction - external clamping is recommended if overvoltage transients are expected.
How does the enable (EN) pin function in the MAX337EAI+?
The EN pin is an active-high global enable controlling both A-side and B-side multiplexers simultaneously. When EN is low, all switches disconnect - presenting high impedance at all NO and COM terminals. When EN is high, channel selection proceeds normally via A0–A2. This feature allows synchronized channel blanking during system calibration or fault recovery, and simplifies power sequencing in multi-mux architectures.
MAX337EAI+ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SSOP
MAX337EAI+ FAQ
1.How can I place an order for MAX337EAI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX337EAI+ 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 MAX337EAI+ reliable?
The price and inventory of MAX337EAI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX337EAI+ is usually 5 days.
3.What payment methods are accepted for MAX337EAI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX337EAI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX337EAI+?
MAX337EAI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX337EAI+ 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 MAX337EAI+?
For technical support, including MAX337EAI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX337EAI+ requirements.
6.How does Aetrix verify that MAX337EAI+ is sourced from the original manufacturer or authorized distributors?
All MAX337EAI+ 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 MAX337EAI+ meets industry standards.
7.What is the process for return or replacement of MAX337EAI+?
All MAX337EAI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX337EAI+, 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 MAX337EAI+ part is unused and in its original packaging.
Return procedure for MAX337EAI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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