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Analog Devices Inc./Maxim Integrated MAX309EJE
- Part No.:
- MAX309EJE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
MAX309EJE.pdf
- Description:
- IC SWITCH SP4TX2 100OHM 16CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:621
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Product details
Overview
MAX309EJE from Maxim Integrated is a precision differential 2-of-4 CMOS analog multiplexer designed for high-fidelity signal routing in demanding analog systems. It features <100Ω on-resistance (max), <5Ω channel-to-channel matching, <10pC charge injection, and operates from ±5V to ±20V or +5V to +30V supplies - enabling rail-to-rail signal handling in military radios and automatic test equipment.
For engineers reviewing the MAX309EJE datasheet, MAX309EJE pinout, MAX309EJE application, or MAX309EJE equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω over ±10V range), NO-off leakage <5nA at +85°C, COM-off leakage <20nA at +85°C, and ESD protection >2000V - all validated across –40°C to +85°C.
Technical Context
The MAX309EJE implements a fully differential 4-channel architecture with two independent COM outputs (COMA and COMB) and dual 4-input banks (NO1A–NO4A and NO1B–NO4B), controlled by A0/A1 address lines and an active-low EN enable input. Its silicon-gate CMOS process ensures matched switch characteristics and low thermal drift.
It supports break-before-make switching with tOPEN ≤450ns (typ), transition time tTRANS ≤250ns (max), and TTL/CMOS-compatible logic inputs (VAL ≤0.8V, VAH ≥2.4V). Signal integrity is preserved via low crosstalk (–92dB) and high off-isolation (–75dB), critical for precision sample-and-hold and guidance systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | <100Ω max - ensures minimal signal attenuation and gain error in precision gain-setting or sensor front-end paths |
| On-Resistance Matching | <5Ω max - enables accurate differential signal balancing and common-mode rejection in instrumentation |
| Charge Injection | <10pC - reduces voltage glitch and settling error in sample-and-hold circuits using 1nF hold capacitors |
| NO-Off Leakage | <5nA at +85°C - maintains accuracy in high-impedance sensor multiplexing without significant DC offset drift |
| Analog Signal Range | ±10V (dual supply) - supports full-rail operation with ±15V supplies, preserving dynamic range in audio and comms systems |
| Supply Range | ±5V to ±20V or +5V to +30V - allows flexible power architecture design including unbalanced rails like +24V/–5V |
| ESD Protection | >2000V HBM - enhances robustness during board handling and system integration in industrial environments |
Pinout & Package
MAX309EJE is housed in a 16-pin CERDIP package (hermetically sealed ceramic dual in-line), rated for –40°C to +85°C operation and suitable for high-reliability military and aerospace applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting one of four differential channels per bank (A0/A1 = 00–11) |
| 2 | EN | Active-low enable controlling conduction state of both banks simultaneously |
| 3 | V− | Negative supply rail connection; must be referenced to GND in single-supply mode |
| 4–7 | NO1A–NO4A | First set of four bidirectional analog inputs for differential pair A |
| 8, 9 | COMA, COMB | Two independent bidirectional analog outputs - COMA routes NO1A–NO4A, COMB routes NO1B–NO4B |
| 10–13 | NO4B–NO1B | Second set of four bidirectional analog inputs for differential pair B (reversed pin order per datasheet) |
| 14 | V+ | Positive supply rail; substrate tied internally to V+ per chip topography |
| 15 | GND | Ground reference for logic interface and internal biasing network |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals spanning full V+ to V− range without clipping, essential for ±15V op-amp interfaces |
| Differential 2-of-4 architecture | Provides two independent 4:1 multiplexed outputs (COMA/COMB), enabling simultaneous dual-path routing in guidance systems |
| Guaranteed on-resistance flatness | ≤7Ω variation across ±10V signal range - minimizes harmonic distortion in audio signal routing applications |
| Plug-in upgrade for DG409/DG509A | Direct replacement with improved specs: lower RON, tighter matching, and higher ESD tolerance - no PCB redesign needed |
| Low power consumption | <300µW typical - extends battery life in portable test equipment and handheld comms devices |
Applications
| Military Radios | Automatic Test Equipment |
|---|---|
Use Scenario: Channel selection and antenna signal routing in secure HF/VHF transceivers operating across wide temperature ranges. IC Role / Device Role / Timing Role: Differential analog mux providing isolated, low-leakage signal path switching between multiple RF front-end modules and baseband processors. Use Value: Guaranteed <5nA NO-off leakage at +85°C prevents signal degradation in high-impedance receive chains, maintaining sensitivity under extreme environmental stress. | Use Scenario: Multiplexing sensor calibration references and DUT signals in automated functional test platforms. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential connection of multiple DUTs to shared measurement circuitry with minimal channel crosstalk. Use Value: –92dB crosstalk and –75dB off-isolation ensure measurement integrity when testing high-resolution ADCs or precision DACs. |
| Guidance and Control Systems | Heads-Up Displays |
Use Scenario: Routing inertial sensor outputs (gyro, accelerometer) to navigation processors in aircraft and missile control units. IC Role / Device Role / Timing Role: High-reliability differential multiplexer delivering matched gain paths for redundant sensor fusion algorithms. Use Value: <5Ω on-resistance matching preserves common-mode rejection ratio (CMRR) across differential pairs, critical for noise-immune flight control feedback. | Use Scenario: Switching video and symbology signals between multiple display drivers in avionics HUDs. IC Role / Device Role / Timing Role: Fast-switching analog mux managing composite video, RGB, or digital video overlay paths with minimal glitch energy. Use Value: <10pC charge injection limits pixel-level voltage disturbance during video frame transitions, preventing visible artifacts in optical projection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX309ESE | Same electrical specs but in 16-pin narrow SO package; lower thermal resistance, no hermetic seal | Better suited for commercial-grade, space-constrained PCBs where moisture resistance is not required | Select MAX309ESE for cost-sensitive industrial designs needing same performance in surface-mount format |
| ADG409BRZ | Higher on-resistance (100Ω typ vs. 75Ω typ), no guaranteed flatness spec, 1500V ESD rating | Limited suitability for military/aerospace due to lower ESD and unguaranteed RON flatness over full signal range | Choose ADG409BRZ only for non-critical commercial applications where CERDIP reliability is unnecessary |
Compared with MAX309EJE, MAX309ESE offers identical functionality in a smaller SO package but lacks hermetic sealing and extended temperature margin, while ADG409BRZ trades guaranteed flatness and ESD robustness for broader distributor availability - making MAX309EJE the sole choice for mission-critical, high-reliability differential multiplexing.
Availability
MAX309EJE is available at Aetrix Electronics and suitable for military radios, guidance systems, automatic test equipment, and heads-up displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX309EJE 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, automotive, and communications markets.
The MAX308/MAX309 product line was engineered for precision analog signal routing in harsh environments - emphasizing low leakage, matched on-resistance, and robust ESD tolerance for defense, test, and avionics applications.
FAQ
What is the operating temperature range of the MAX309EJE?
The MAX309EJE is specified for operation from –40°C to +85°C. This extended industrial temperature range is validated across all key parameters including on-resistance, leakage current, and switching speed - making it suitable for deployment in military radios and guidance systems exposed to wide ambient variations. The CERDIP package contributes to thermal stability and long-term reliability under thermal cycling stress.
Does the MAX309EJE support single-supply operation?
Yes, the MAX309EJE supports single-supply operation from +5V to +30V. In this configuration, V− must be connected to GND, and the analog signal range adjusts accordingly (e.g., 0V to +12V with +12V supply). All key specifications - including <100Ω on-resistance and <5nA NO-off leakage at +85°C - are guaranteed across the full single-supply range per the datasheet's Electrical Characteristics table.
How does the MAX309EJE differ from the MAX308EJE?
The MAX309EJE is a differential 2-of-4 analog multiplexer with two independent COM outputs (COMA/COMB) and two 4-input banks, whereas the MAX308EJE is a single-ended 1-of-8 device with one COM output and eight NO inputs. Their pinouts, truth tables, and signal routing architectures are fundamentally different - MAX309EJE enables true differential path selection, critical for noise-immune sensor interfaces in guidance systems.
Is the MAX309EJE pin-compatible with industry-standard alternatives like the DG409?
Yes, the MAX309EJE is a plug-in upgrade for the DG409 and DG509A, sharing identical pinout, logic interface, and functional behavior. However, it improves upon those legacy parts with guaranteed on-resistance matching (<5Ω), lower charge injection (<10pC), and enhanced ESD protection (>2000V), all without requiring PCB layout changes - confirmed in Maxim's General Description and Ordering Information sections.
What is the maximum analog signal range supported by the MAX309EJE?
The MAX309EJE supports an analog signal range of ±10V when operated with ±15V supplies, and up to ±20V with ±20V supplies - limited only by the absolute maximum ratings (V+ to V− ≤ 44V). This rail-to-rail capability is explicitly guaranteed in the datasheet's Electrical Characteristics tables and Typical Operating Characteristics plots, ensuring full dynamic range utilization in audio routing and comms systems.
MAX309EJE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SP4T - Open/Closed
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.5Ohm
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 750pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CERDIP
MAX309EJE FAQ
1.How can I place an order for MAX309EJE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX309EJE 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 MAX309EJE reliable?
The price and inventory of MAX309EJE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX309EJE is usually 5 days.
3.What payment methods are accepted for MAX309EJE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX309EJE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX309EJE?
MAX309EJE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX309EJE 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 MAX309EJE?
For technical support, including MAX309EJE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX309EJE requirements.
6.How does Aetrix verify that MAX309EJE is sourced from the original manufacturer or authorized distributors?
All MAX309EJE 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 MAX309EJE meets industry standards.
7.What is the process for return or replacement of MAX309EJE?
All MAX309EJE units undergo pre-shipment inspection (PSI). If there is an issue with MAX309EJE, 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 MAX309EJE part is unused and in its original packaging.
Return procedure for MAX309EJE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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