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Analog Devices Inc./Maxim Integrated MAX309EUE+T
- Part No.:
- MAX309EUE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX309EUE+T.pdf
- Description:
- IC SWITCH SP4TX2 100OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,296
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Product details
Overview
MAX309EUE+T 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 rail-to-rail signal handling up to ±20V bipolar or +30V single supply - enabling accurate signal selection in test instrumentation and military-grade communications.
For engineers reviewing the MAX309EUE+T datasheet, MAX309EUE+T pinout, MAX309EUE+T application, or MAX309EUE+T equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), break-before-make timing (115–450ns), dual-supply flexibility (±5V to ±20V), and ESD robustness (>2000V), critical for low-distortion sample-and-hold and guidance system front-ends.
Technical Context
The MAX309EUE+T implements a fully decoded CMOS switch matrix with independent A0/A1 address control and EN enable logic, supporting four differential channel pairs (NO1A/NO1B through NO4A/NO4B) routed to COMA/COMB outputs. Its silicon-gate process ensures matched threshold voltages across channels, directly enabling the ≤5Ω on-resistance matching and <7Ω flatness over ±10V signal range.
Switching dynamics are governed by low-capacitance design: COM-Off capacitance is 26pF, NO-Off is 3pF, and input capacitance is 8pF at 1MHz - minimizing crosstalk (<−92dB) and transition time (<250ns). Charge injection (<10pC) and leakage specs (<5nA NO-off at +85°C) are production-tested, not just characterized.
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-mux paths |
| On-Resistance Matching | <5Ω max - enables high-accuracy differential measurements without calibration per channel |
| Charge Injection | <10pC - limits voltage glitch on sample capacitors, critical for sub-12-bit ADC front-ends |
| NO-Off Leakage | <5nA at +85°C - preserves signal integrity in high-impedance sensor or battery-monitoring circuits |
| Analog Signal Range | ±10V (dual), 0–12V (single) - supports industrial ±10V standards and 12V automotive rails without level-shifting |
| Supply Range | ±5V to ±20V or +5V to +30V - allows direct interface with legacy ±15V op-amps and modern 12V/24V systems |
| Transition Time | <250ns - enables multiplexing of signals up to ~1MHz without significant settling distortion |
| ESD Protection | >2000V HBM - eliminates need for external protection diodes in board-level ESD zones |
Pinout & Package
MAX309EUE+T is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed pad for thermal enhancement. Pin functions are validated per Maxim's official pin configuration diagram for MAX309.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1 | Binary Address Inputs | Select one of four differential channel pairs (00→NO1A/B, 11→NO4A/B); TTL/CMOS compatible |
| EN | Active-High Enable | Disables all switches when low; guarantees break-before-make during address changes |
| NO1A–NO4A, NO1B–NO4B | Differential Analog Inputs | Bidirectional terminals accepting ±20V signals; matched layout minimizes skew between A/B legs |
| COMA, COMB | Differential Analog Outputs | Low-impedance outputs tied to internal switch matrix; require matched PCB routing for common-mode rejection |
| V+, V− | Supply Rails | Support asymmetric supplies (e.g., +24V/−5V); substrate tied to V+ for latch-up immunity |
| GND | Logic Reference | Separate from analog ground pins - must be star-connected to minimize digital noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Operates with input signals spanning full V− to V+ range - eliminates level-shifter ICs in ±15V systems |
| Guaranteed on-resistance flatness | ≤7Ω variation across ±10V range - maintains consistent gain/attenuation regardless of signal amplitude |
| Plug-in upgrade for DG409 | Pin- and function-compatible replacement for industry-standard DG409 - no PCB or firmware changes required |
| Low power consumption | <300µW quiescent - enables use in always-on battery-powered guidance subsystems |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V thresholds - interfaces directly with FPGA I/O banks and microcontroller GPIOs |
Applications
| Military Radios | Automatic Test Equipment |
|---|---|
Use Scenario: Channel selection in multi-band RF transceiver front-end where antenna switching must preserve signal fidelity across 30–512 MHz bands. IC Role / Device Role / Timing Role: Differential analog multiplexer routing LO injection paths and IF sampling nodes with matched delay and impedance. Use Value: ≤5Ω RON matching and <−92dB crosstalk prevent intermodulation distortion during simultaneous receive/transmit path isolation. | Use Scenario: High-speed signal routing in PXI-based semiconductor testers switching between DUT stimulus and measurement channels. IC Role / Device Role / Timing Role: Precision analog mux selecting reference voltages, calibration sources, and DUT inputs under FPGA control. Use Value: <10pC charge injection prevents voltage step errors on 100pF sample capacitors, ensuring <0.01% measurement repeatability. |
| Guidance and Control Systems | Heads-Up Displays |
Use Scenario: Multiplexing inertial sensor outputs (gyro, accelerometer) into radiation-hardened ADCs aboard missile guidance platforms. IC Role / Device Role / Timing Role: High-reliability analog switch managing redundant sensor data paths with fail-safe enable control. Use Value: −40°C to +85°C operation and >2000V ESD rating ensure uninterrupted function during launch vibration and EM pulse exposure. | Use Scenario: Routing video sync pulses and RGB signals from multiple avionics sources to HUD combiner optics. IC Role / Device Role / Timing Role: Low-distortion analog switch enabling seamless source switching without visible screen tearing or color shift. Use Value: <250ns transition time and rail-to-rail ±12V support maintain pixel clock integrity and prevent luminance clipping in 1080p displays. |
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 die, 16-pin narrow SO package (3.9mm × 9.9mm) - larger footprint, higher thermal resistance (8.70mW/°C derating) | Suitable for prototyping or space-tolerant layouts where TSSOP reflow is unavailable | Select MAX309ESE only if board assembly lacks fine-pitch TSSOP capability or requires manual soldering access |
| ADG409BRUZ | 44V supply rating vs. MAX309's 44V absolute max; higher typical on-resistance (125Ω vs. <100Ω); no guaranteed flatness spec | Better suited for general-purpose industrial muxing where <5Ω matching is non-critical | Choose ADG409BRUZ only when cost sensitivity outweighs precision requirements and ESD robustness is secondary |
Compared with MAX309ESE, the MAX309EUE+T offers 30% smaller PCB area and superior thermal performance; versus ADG409BRUZ, it delivers tighter matching, lower leakage, and proven plug-in compatibility with DG409-based legacy designs - making it optimal for high-accuracy, high-reliability signal routing.
Availability
MAX309EUE+T 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 MAX309EUE+T 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 mission-critical systems - emphasizing low distortion, temperature-stable matching, and ruggedized operation in harsh environments.
FAQ
What is the maximum allowable supply voltage difference for MAX309EUE+T?
The MAX309EUE+T has an absolute maximum rating of 44V between V+ and V−. This allows operation with asymmetric supplies such as +24V/−5V (29V difference) or ±20V (40V difference), provided neither rail exceeds its individual voltage limit relative to V−. Exceeding 44V risks permanent damage.
Does MAX309EUE+T support single-supply operation with 3.3V logic control?
Yes, MAX309EUE+T accepts TTL/CMOS logic inputs with VAH ≥ 2.4V and VAL ≤ 0.8V, making it fully compatible with 3.3V microcontrollers and FPGAs. Its internal level-shifting circuitry ensures reliable switching even when V+ is set to +12V or +24V while logic inputs remain at 3.3V levels.
How does the break-before-make interval affect timing in high-speed multiplexing with MAX309EUE+T?
The MAX309EUE+T guarantees a break-before-make interval of 115–450ns (depending on supply and temperature), preventing momentary short-circuits between channels during address transitions. This eliminates signal corruption in differential paths and avoids latch-up in downstream op-amp stages, especially critical in sample-and-hold and phased-array beamforming.
Can MAX309EUE+T be used in battery-operated systems drawing minimal current?
Yes, MAX309EUE+T consumes less than 300µW quiescent power at +25°C and draws only 0.075–0.5mA supply current. Its low leakage (<5nA NO-off at +85°C) and rail-to-rail operation make it ideal for portable medical monitors, handheld test gear, and remote sensor nodes running on coin cells or Li-ion batteries.
Is MAX309EUE+T pin-compatible with the industry-standard DG409 multiplexer?
Yes, MAX309EUE+T is explicitly designed as a plug-in upgrade for DG409. It shares identical pinout, truth table, supply ranges, and logic thresholds. No PCB or firmware modifications are needed - simply replace DG409 with MAX309EUE+T to gain lower on-resistance, tighter matching, and enhanced ESD protection.
MAX309EUE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SP4T
- 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, 26pF
- Current - Leakage (IS(off)) (Max):
- 750pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX309EUE+T FAQ
1.How can I place an order for MAX309EUE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX309EUE+T 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 MAX309EUE+T reliable?
The price and inventory of MAX309EUE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX309EUE+T is usually 5 days.
3.What payment methods are accepted for MAX309EUE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX309EUE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX309EUE+T?
MAX309EUE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX309EUE+T 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 MAX309EUE+T?
For technical support, including MAX309EUE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX309EUE+T requirements.
6.How does Aetrix verify that MAX309EUE+T is sourced from the original manufacturer or authorized distributors?
All MAX309EUE+T 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 MAX309EUE+T meets industry standards.
7.What is the process for return or replacement of MAX309EUE+T?
All MAX309EUE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX309EUE+T, 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 MAX309EUE+T part is unused and in its original packaging.
Return procedure for MAX309EUE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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