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Analog Devices Inc./Maxim Integrated MAX337EPI+
- Part No.:
- MAX337EPI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX337EPI+.pdf
- Description:
- IC INTEGRATED CIRCUIT
- Quantity:
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Inventory:1,222
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Product details
Overview
MAX337EPI+ 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) using a 3-bit binary address. It operates from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply, features ≤400Ω on-resistance, <20pA NO-off leakage at +25°C, and 3.5pC typical charge injection-enabling precision signal routing in test equipment and data acquisition systems.
For engineers reviewing the MAX337EPI+ datasheet, MAX337EPI+ pinout, MAX337EPI+ application, or MAX337EPI+ equivalent, key selection criteria include guaranteed low leakage across -40°C to +85°C, rail-to-rail bidirectional signal handling, TTL/CMOS-compatible control inputs, ESD protection >2000V, and pin compatibility with industry-standard DG507.
Technical Context
The MAX337EPI+ 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 enable inputs. Its BiCMOS process enables low on-resistance matching (≤10Ω), fast transition time (≤500ns), and break-before-make switching with ≤50ns interval.
All digital inputs-including EN and address pins-are TTL/CMOS compatible over full temperature range and supply voltage (±4.5V to ±18V), while analog terminals support rail-to-rail operation with clamping diodes for overvoltage protection. Charge injection is tightly controlled at 3.5pC (typ), critical for minimizing settling error in sampling circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4.5V to ±20V dual or +4.5V to +30V single - supports wide industrial and test-equipment voltage rails |
| On-Resistance (max) | 400Ω at TA = +25°C - ensures minimal signal attenuation and gain error in precision measurement paths |
| NO-Off Leakage (max) | 1.25nA at TA = –40°C to +85°C - preserves high-impedance sensor node integrity during channel disable |
| Charge Injection (typ) | 3.5pC - limits voltage glitch on sampled capacitors, reducing need for long settling times |
| Transition Time (max) | 500ns - enables reliable switching in sub-microsecond data acquisition cycles |
| ESD Protection | >2000V per Method 3015.7 - enhances robustness in benchtop and production test environments |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial ambient conditions without derating |
Pinout & Package
MAX337EPI+ uses a 28-pin plastic DIP package (P28+2 outline), through-hole mountable with 0.3" width and standard 0.1" pin pitch. Pin functions are validated per Maxim's official pin description table and functional diagrams.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Accepts +4.5V to +30V (single) or up to +20V (dual); must be powered first in sequencing |
| V- | Negative supply input | Accepts –4.5V to –20V (dual); connect to GND for single-supply operation |
| GND | Logic ground reference | Reference for TTL/CMOS inputs; isolated from analog signal path but tied to substrate |
| EN | Enable input (active-high) | Disables all switches when low; TTL/CMOS compatible across full temp/supply range |
| A0–A2 | 3-bit binary address inputs | Selects one of eight channels per side; no A3 pin - distinguishes MAX337 from 16-channel MAX336 |
| COMA / COMB | Differential common outputs | Bidirectional, rail-to-rail analog nodes; electrically isolated between A/B sides |
| NO1A–NO8A / NO1B–NO8B | Analog inputs (A and B sides) | Fully interchangeable as inputs or outputs; identical electrical specs per channel |
| N.C. | No internal connection | Pins 2, 3, 13 - unused; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail bidirectional signal handling | Supports analog signals from V– to V+, enabling full dynamic range utilization in ±15V or +12V systems |
| Guaranteed low charge injection (3.5pC typ) | Minimizes voltage step on hold capacitors, directly improving accuracy in sample-and-hold and ADC front-end designs |
| Plug-in upgrade for DG507 | Pin- and function-compatible replacement requiring no PCB or firmware changes in legacy DG507 designs |
| Ultra-low off-leakage (<20pA at +25°C) | Preserves signal integrity in high-impedance pH sensors, thermopiles, and piezoelectric transducer interfaces |
| TTL/CMOS logic compatibility | Eliminates level-shifting requirements when interfacing with microcontrollers, FPGAs, or logic sequencers |
Applications
| Precision Data Acquisition | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Multiplexing multiple low-level sensor outputs (e.g., strain gauges, RTDs) into a single high-resolution ADC channel. IC Role / Device Role / Timing Role: Analog signal selector with sub-nA leakage and rail-to-rail swing, ensuring minimal offset and gain drift across channels. Use Value: Enables 16+ channel scanning at 0.001% accuracy without external buffering or calibration per channel. | Use Scenario: Routing stimulus and response signals between DUT and instrumentation in modular ATE racks. IC Role / Device Role / Timing Role: Dual independent 8:1 switch providing simultaneous A/B path isolation and fast channel reconfiguration. Use Value: Reduces test head cabling complexity and supports parallel test execution via independent COMA/COMB outputs. |
| Precision Signal Routing | Medical Instrumentation |
Use Scenario: Selecting among calibrated reference voltages or gain-setting resistors in programmable gain instrumentation amplifiers. IC Role / Device Role / Timing Role: Low-charge-injection, low-RON match analog switch ensuring stable gain and minimal transient injection during reconfiguration. Use Value: Maintains system THD < 0.01% at 1kHz and eliminates post-switching settling delays in closed-loop calibration sequences. | Use Scenario: Isolating and routing biopotential signals (ECG, EEG) from electrode arrays to differential amplifiers while rejecting leakage-induced baseline wander. IC Role / Device Role / Timing Role: Ultra-low-noise, ultra-low-leakage analog multiplexer preserving signal-to-noise ratio and DC stability in high-Z bio-sensing front ends. Use Value: Achieves input bias current <2pA effective, meeting IEC 60601-2-27 requirements for patient-connected measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX337CPI+ | Same pinout and function, but rated for 0°C to +70°C only - lacks extended temperature qualification | Suitable for commercial-grade bench instruments; not rated for industrial ambient extremes | Select MAX337CPI+ only if operating environment stays within 0°C–70°C and cost sensitivity outweighs reliability margin |
| ADG507AKNZ | Pin-compatible 8-channel dual mux; higher on-resistance (450Ω max), higher charge injection (15pC typ), no guaranteed ESD rating | Acceptable for non-critical routing where leakage <1nA and glitch energy are less constrained | Choose ADG507AKNZ only when legacy ADI footprint reuse is mandatory and MAX337EPI+ lead time or cost prohibits use |
Compared with MAX337CPI+, MAX337EPI+ delivers verified operation down to –40°C and guarantees leakage performance across full industrial range; versus ADG507AKNZ, it provides 4× lower charge injection and documented >2000V ESD robustness-critical for automated test and medical signal chains.
Availability
MAX337EPI+ 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 MAX337EPI+ 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 product line was engineered specifically for low-leakage, low-charge-injection analog multiplexing in high-fidelity data acquisition and automated test systems-prioritizing signal integrity over speed or integration density.
FAQ
What is the maximum allowable supply voltage difference for MAX337EPI+?
The absolute maximum voltage difference between V+ and V– for MAX337EPI+ is 44V. This allows operation with asymmetric supplies such as +24V and –5V (29V total), provided each supply remains within its respective ±4.5V to ±20V range. Exceeding 44V risks permanent damage due to internal junction breakdown, as specified in the Absolute Maximum Ratings table.
Does MAX337EPI+ support single-supply operation, and how is it configured?
Yes, MAX337EPI+ supports single-supply operation from +4.5V to +30V. To configure: connect V– to GND, apply V+ to the positive rail, and ensure all analog signals remain within 0V to V+. The device maintains rail-to-rail signal handling and retains full TTL/CMOS compatibility on address and enable inputs under this configuration.
Is MAX337EPI+ pin-compatible with the DG507, and what does that mean for design migration?
Yes, MAX337EPI+ is explicitly documented as a plug-in upgrade for the DG507. That means identical pinout, same 28-pin DIP footprint, matching logic thresholds, and equivalent analog performance-enabling direct replacement without PCB layout changes, firmware updates, or signal integrity revalidation in existing DG507-based systems.
What is the guaranteed on-resistance matching between channels in MAX337EPI+?
MAX337EPI+ guarantees on-resistance matching (∆RON) of ≤10Ω at +25°C and ≤15Ω across the full –40°C to +85°C operating range. This specification ensures consistent gain and minimal crosstalk-induced errors when routing matched signal paths-critical for ratiometric measurements and multi-channel calibration schemes.
How does the charge injection spec of MAX337EPI+ impact sample-and-hold circuit design?
With 3.5pC typical charge injection, MAX337EPI+ induces ≤3.5mV glitch on a 1nF hold capacitor. This enables sub-12-bit settling within 100ns using standard op-amp buffers-reducing or eliminating need for dedicated zero-drift amplifiers or complex correlated double sampling in precision data loggers and digitizers using MAX337EPI+.
MAX337EPI+ 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:
- -
MAX337EPI+ FAQ
1.How can I place an order for MAX337EPI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX337EPI+ 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 MAX337EPI+ reliable?
The price and inventory of MAX337EPI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX337EPI+ is usually 5 days.
3.What payment methods are accepted for MAX337EPI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX337EPI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX337EPI+?
MAX337EPI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX337EPI+ 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 MAX337EPI+?
For technical support, including MAX337EPI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX337EPI+ requirements.
6.How does Aetrix verify that MAX337EPI+ is sourced from the original manufacturer or authorized distributors?
All MAX337EPI+ 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 MAX337EPI+ meets industry standards.
7.What is the process for return or replacement of MAX337EPI+?
All MAX337EPI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX337EPI+, 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 MAX337EPI+ part is unused and in its original packaging.
Return procedure for MAX337EPI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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