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Analog Devices Inc./Maxim Integrated MAX309CPE+G126
- Part No.:
- MAX309CPE+G126
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX309CPE+G126.pdf
- Description:
- INTEGRATED CIRCUIT
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Product details
Overview
MAX309CPE+G126 from Maxim Integrated is a precision differential 2-of-4 CMOS analog multiplexer designed for high-fidelity signal routing in demanding analog systems. It delivers <100Ω on-resistance, <5Ω channel-to-channel matching, <10pC charge injection, <5nA NO-off leakage at +85°C, and supports ±5V to ±20V bipolar or +5V to +30V single-supply operation - enabling accurate signal selection in military radios and guidance systems.
For engineers reviewing the MAX309CPE+G126 datasheet, MAX309CPE+G126 pinout, MAX309CPE+G126 application, or MAX309CPE+G126 equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), rail-to-rail signal handling, TTL/CMOS logic compatibility, and plug-in upgrade capability for DG409/DG509A in existing layouts.
Technical Context
The MAX309CPE+G126 implements a fully differential 2-of-4 switching architecture with independent COMA/COMB outputs and dual NO1A–NO4A / NO1B–NO4B input banks. Its silicon-gate process ensures matched switch characteristics across channels and stable performance over temperature (–40°C to +85°C).
It features CMOS decode logic with three address inputs (A1, A0, EN) controlling two simultaneous analog paths, low-power operation (<300µW), and electrostatic discharge protection exceeding 2000V - all while maintaining fast transition time (<250ns) and break-before-make timing (115–450ns) critical for glitch-free signal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | <100Ω max - ensures minimal signal attenuation and voltage drop in precision analog paths |
| On-Resistance Matching | <5Ω max - enables high-accuracy differential measurements without calibration |
| Charge Injection | <10pC - reduces sampling error in sample-and-hold circuits and ADC front-ends |
| NO-Off Leakage | <5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces |
| Analog Signal Range | ±10V (dual supply) - supports full-rail operation with ±15V supplies |
| Supply Range | ±5V to ±20V or +5V to +30V - allows flexible power architecture in battery- and line-powered systems |
| Transition Time | <250ns - enables fast channel switching in automatic test equipment (ATE) |
Pinout & Package
MAX309CPE+G126 is housed in a 16-pin plastic DIP package (0.300" wide), compatible with through-hole assembly and legacy prototyping environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting active differential pair (00–11) |
| 2 | EN | Active-high enable controlling all switches; disables all paths when low |
| 3 | V− | Negative supply rail for bipolar operation or ground reference in single-supply mode |
| 4–7 | NO1A–NO4A | First set of four bidirectional analog inputs for differential channel A |
| 8, 9 | COMA, COMB | Differential output terminals - COMA pairs with NOxA, COMB with NOxB |
| 10–13 | NO4B–NO1B | Second set of four bidirectional analog inputs for differential channel B |
| 14 | V+ | Positive supply rail supporting up to +30V single or +20V bipolar operation |
| 15 | GND | Logic ground reference; tied to V− in single-supply configurations |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals spanning full V+ to V− range without clipping or distortion |
| Guaranteed on-resistance flatness | ≤7Ω variation across entire ±10V signal range - maintains gain accuracy in instrumentation amplifiers |
| TTL/CMOS logic compatibility | Accepts standard 0.8V/2.4V logic thresholds - eliminates need for level-shifting circuitry |
| Plug-in upgrade for DG409/DG509A | Pin- and function-compatible replacement - enables performance enhancement without PCB redesign |
| ESD protection >2000V | Meets HBM Class 2 requirements - improves robustness during handling and system integration |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
Use Scenario: Selecting between multiple RF front-end signal paths under harsh environmental conditions. IC Role / Device Role / Timing Role: Differential analog multiplexer routing calibrated IF signals while rejecting common-mode noise. Use Value: Low charge injection (<10pC) prevents transient errors in AGC loops; matched on-resistance ensures consistent gain across selected paths. | Use Scenario: Multiplexing inertial sensor outputs (gyro, accelerometer) into navigation processor ADCs. IC Role / Device Role / Timing Role: High-precision, low-leakage signal selector preserving microvolt-level sensor resolution. Use Value: NO-off leakage <5nA at +85°C minimizes offset drift; rail-to-rail operation accommodates full sensor dynamic range. |
| Automatic Test Equipment | Heads-Up Displays |
Use Scenario: Routing DUT signals to measurement instruments in modular ATE racks. IC Role / Device Role / Timing Role: Fast-switching (250ns transition), low-crosstalk multiplexer enabling high-throughput parametric testing. Use Value: Off isolation >75dB and crosstalk <–92dB prevent signal coupling between adjacent test channels. | Use Scenario: Switching between multiple video sources (HUD symbology, camera feed, radar overlay) in avionics displays. IC Role / Device Role / Timing Role: Differential analog mux delivering clean, synchronized video signals with minimal glitch energy. Use Value: Break-before-make interval (115–450ns) prevents short-circuited outputs; low on-resistance avoids video amplitude loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX309EPE | Same die, extended temperature range (–40°C to +85°C) vs. 0°C to +70°C | Suitable for industrial or automotive environments requiring wider thermal margin | Select MAX309EPE if operating ambient exceeds +70°C or requires MIL-STD-883 screening |
| ADG409BRZ | Higher on-resistance (100Ω typ), no guaranteed on-resistance matching, lower ESD rating (1500V) | Limited suitability for precision differential measurement where channel matching is critical | Choose ADG409BRZ only when cost sensitivity outweighs matching and leakage requirements |
Compared with MAX309CPE+G126, MAX309EPE offers identical electrical performance with enhanced thermal reliability, while ADG409BRZ trades precision matching and leakage for broader distributor availability - making MAX309CPE+G126 optimal for calibrated test and defense-grade signal routing.
Availability
MAX309CPE+G126 is available at Aetrix Electronics and suitable for military radios, guidance and control systems, automatic test equipment, heads-up displays, and battery-operated systems requiring stable component supply across long production lifecycles.
Supply support for MAX309CPE+G126 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and defense markets.
The MAX308/MAX309 product line was engineered specifically for precision analog signal routing in mission-critical systems where low leakage, matched on-resistance, and robust ESD tolerance are non-negotiable.
FAQ
What is the operating temperature range of the MAX309CPE+G126?
The MAX309CPE+G126 is rated for commercial temperature operation from 0°C to +70°C. This range is validated per the device's ordering code "C" suffix and confirmed in the Absolute Maximum Ratings table. The plastic DIP package (CPE) is specified for this range only; extended-range variants like MAX309EPE operate from –40°C to +85°C. Thermal derating applies above +70°C per the 10.53mW/°C dissipation limit.
Does the MAX309CPE+G126 support single-supply operation?
Yes, the MAX309CPE+G126 supports single-supply operation from +5V to +30V. In this configuration, V− must be connected to GND (pin 15), and analog signals swing from 0V to V+. The datasheet confirms rail-to-rail signal handling and specifies on-resistance, leakage, and switching times under +12V single-supply conditions. Performance remains consistent with dual-supply operation except for reduced analog signal range at lower voltages.
Is the MAX309CPE+G126 pin-compatible with the DG409 analog multiplexer?
Yes, the MAX309CPE+G126 is explicitly documented as a plug-in upgrade for the industry-standard DG409. Pin assignments, truth table logic, supply voltage ranges, and functional behavior match identically - allowing direct replacement without PCB modification. Key improvements include lower on-resistance (<100Ω vs. ~120Ω), tighter matching (<5Ω vs. unspecified), and higher ESD protection (>2000V vs. ~200V).
What is the maximum analog signal voltage the MAX309CPE+G126 can handle?
The MAX309CPE+G126 supports analog signals from V− to V+, with absolute limits defined by its supply rails. Under ±15V dual-supply operation, it handles ±10V signals (as tested in Electrical Characteristics). With +30V single supply, the full 0V to +30V range is supported - but practical signal swing is constrained by on-resistance flatness specifications, which guarantee ≤7Ω variation only up to ±10V. Exceeding these voltages risks increased RON variation and leakage.
How does charge injection affect system performance with the MAX309CPE+G126?
Charge injection in the MAX309CPE+G126 is guaranteed <10pC, directly impacting sample-and-hold and switched-capacitor circuit accuracy. When a channel turns off, injected charge displaces the hold capacitor voltage by ∆V = Q/CL - e.g., 10pC into 100pF yields 100mV error. This specification enables predictable error budgeting in precision data acquisition systems. Layout best practices (minimizing stray capacitance, using guard rings) further suppress effective error magnitude in real-world implementations of the MAX309CPE+G126.
MAX309CPE+G126 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:
- -
MAX309CPE+G126 FAQ
1.How can I place an order for MAX309CPE+G126 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX309CPE+G126 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 MAX309CPE+G126 reliable?
The price and inventory of MAX309CPE+G126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX309CPE+G126 is usually 5 days.
3.What payment methods are accepted for MAX309CPE+G126?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX309CPE+G126 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX309CPE+G126?
MAX309CPE+G126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX309CPE+G126 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 MAX309CPE+G126?
For technical support, including MAX309CPE+G126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX309CPE+G126 requirements.
6.How does Aetrix verify that MAX309CPE+G126 is sourced from the original manufacturer or authorized distributors?
All MAX309CPE+G126 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 MAX309CPE+G126 meets industry standards.
7.What is the process for return or replacement of MAX309CPE+G126?
All MAX309CPE+G126 units undergo pre-shipment inspection (PSI). If there is an issue with MAX309CPE+G126, 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 MAX309CPE+G126 part is unused and in its original packaging.
Return procedure for MAX309CPE+G126:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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