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Analog Devices Inc./Maxim Integrated MAX309CUE+T
- Part No.:
- MAX309CUE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX309CUE+T.pdf
- Description:
- IC SWITCH SP4TX2 100OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,443
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Product details
Overview
MAX309CUE+T from Maxim Integrated is a precision differential 2-of-4 CMOS analog multiplexer with <100Ω on-resistance, <5Ω channel-to-channel matching, and <10pC charge injection. It operates from ±5V to ±20V bipolar or +5V to +30V single supply, supports rail-to-rail signal handling up to ±10V, and targets high-accuracy signal routing in military radios and automatic test equipment.
For engineers reviewing the MAX309CUE+T datasheet, MAX309CUE+T pinout, MAX309CUE+T application, or MAX309CUE+T equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), NO-off leakage <5nA at +85°C, enable switching times under 600ns, and TSSOP-16 packaging for space-constrained PCB layouts.
Technical Context
The MAX309CUE+T implements a CMOS decode logic architecture with dual 4-channel differential switching paths (COMA/COMB outputs), controlled by A0/A1 address inputs and an active-low EN enable. Its silicon-gate process ensures electrostatic discharge protection >2000V and low input loading via TTL/CMOS-compatible digital inputs.
It guarantees matched on-resistance across channels (<5Ω max) and flat on-resistance over the full ±10V analog signal range (≤7Ω variation), enabling precise gain/offset stability in sample-and-hold and guidance systems where channel crosstalk and charge injection must be minimized.
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 accurate differential signal routing without gain mismatch |
| Charge Injection | <10pC - Reduces settling error in sample-and-hold circuits requiring sub-12-bit accuracy |
| NO-Off Leakage | <5nA at +85°C - Maintains signal integrity in high-impedance sensor front-ends |
| Transition Time | <250ns - Supports fast-switching applications like automated test sequencing |
| Analog Signal Range | ±10V - Allows full rail-to-rail operation with ±15V supplies |
| Supply Range | ±5V to ±20V or +5V to +30V - Provides flexibility in mixed-signal system power architecture |
Pinout & Package
MAX309CUE+T is housed in a 16-pin TSSOP package (3.45mm × 4.4mm, 0.65mm pitch), optimized for high-density PCB layouts and thermal performance up to +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting one of four differential switch pairs |
| 2 | EN | Active-low enable controlling all switch paths simultaneously |
| 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/common terminals for independent A/B signal paths |
| 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 dual operation |
| 15 | GND | Ground reference for logic interface and internal biasing |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports ±10V analog signals with no clipping when powered from ±15V supplies |
| Plug-in upgrade for DG409 | Direct replacement for industry-standard DG409 without layout or firmware changes |
| Low power consumption | <300µW typical - Enables use in battery-operated systems with extended runtime |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V logic thresholds - Simplifies interface with microcontrollers and FPGAs |
| ESD protection | >2000V HBM - Enhances reliability in handling-sensitive industrial environments |
Applications
| Military Radios | Automatic Test Equipment |
|---|---|
Use Scenario: Signal path selection between multiple RF front-end modules and baseband processors in secure tactical radios. IC Role / Device Role / Timing Role: Differential 2-of-4 analog multiplexer routing I/Q signals while preserving phase coherence and minimizing intermodulation distortion. Use Value: <5Ω on-resistance matching ensures amplitude balance across differential paths, critical for maintaining EVM <3% in QPSK modulation schemes. | Use Scenario: High-speed channel scanning across dozens of DUTs in production-line functional testers. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential connection of test instruments (DMM, SMU) to device pins with minimal settling delay. Use Value: <250ns transition time and <10pC charge injection reduce per-channel test time by ≥15% versus legacy DG409-based designs. |
| Guidance and Control Systems | Heads-Up Displays |
Use Scenario: Multiplexing inertial sensor outputs (gyro, accelerometer) into ADC inputs within flight control units. IC Role / Device Role / Timing Role: Low-leakage, matched analog switch ensuring DC-coupled signal fidelity for closed-loop stabilization algorithms. Use Value: NO-off leakage <5nA at +85°C prevents drift-induced attitude errors exceeding 0.05°/hr in long-duration missions. | Use Scenario: Routing video sync and RGB signals from multiple sources (HUD processor, radar overlay, FLIR feed) to projection optics. IC Role / Device Role / Timing Role: High-bandwidth analog multiplexer supporting 60MHz pixel clock rates with minimal crosstalk. Use Value: -92dB crosstalk and 3pF NO-off capacitance preserve edge sharpness and color fidelity in real-time symbology rendering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG409BRUZ | Higher on-resistance (100Ω typ vs. 75Ω typ), no guaranteed flatness spec, 16-TSSOP same footprint | Limited to commercial temp range (−40°C to +85°C); lacks MIL-qualified variants | Preferred for cost-sensitive industrial instrumentation where leakage <10nA suffices |
| TS5A23157DGSR | Lower voltage rating (5.5V max), higher charge injection (25pC), 10-pin VSSOP smaller size | Not suitable for ±15V systems; intended for portable audio/data switching only | Only viable for low-voltage battery-powered consumer devices, not military or test equipment |
Compared with ADG409BRUZ and TS5A23157DGSR, the MAX309CUE+T uniquely delivers guaranteed on-resistance flatness (≤7Ω), <5nA leakage at +85°C, and ±20V bipolar operation - making it the sole choice for high-reliability, wide-supply, precision analog routing where channel matching and thermal stability are non-negotiable.
Availability
MAX309CUE+T is available at Aetrix Electronics and suitable for military radios, automatic test equipment, guidance and control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX309CUE+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) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX308/MAX309 product line was engineered specifically for high-fidelity analog signal routing in mission-critical systems where low leakage, matched on-resistance, and robust ESD tolerance are mandatory - not optional.
FAQ
What is the maximum analog signal voltage range supported by the MAX309CUE+T?
The MAX309CUE+T supports an analog signal range of ±10V when operated from ±15V supplies. With ±20V supplies, the range extends to ±12V; with +12V single supply (V− = GND), it handles 0V to +10V signals. These limits are defined by the absolute maximum ratings and verified in the Typical Operating Characteristics plots on page 5 of the datasheet.
Does the MAX309CUE+T require external pull-up resistors on its address or enable pins?
No, the MAX309CUE+T does not require external pull-up resistors. Its CMOS inputs have low input current (±1.0µA max) and are TTL/CMOS-logic compatible with guaranteed thresholds of VAL ≤ 0.8V (low) and VAH ≥ 2.4V (high). Direct connection to microcontroller GPIO or FPGA outputs is fully supported.
Can the MAX309CUE+T be used in a single-supply configuration with V− tied to ground?
Yes, the MAX309CUE+T supports single-supply operation: tie V− to GND and apply +5V to +30V to V+. In this mode, the analog signal range becomes 0V to V+ − 2V (e.g., 0V to +10V with +12V supply), and all digital inputs remain compatible with standard 3.3V or 5V logic levels.
What is the thermal performance limit for continuous operation of the MAX309CUE+T?
The MAX309CUE+T is rated for 0°C to +70°C ambient operating temperature. Its TSSOP-16 package has a thermal resistance θJA of 149°C/W, and maximum power dissipation at +70°C is 457mW. Derating is linear at 6.7mW/°C above +70°C - but operation beyond +70°C ambient violates the specified temperature grade and voids parametric guarantees.
How does the MAX309CUE+T compare to the MAX308 in terms of pin compatibility and function?
The MAX309CUE+T is not pin-compatible with the MAX308: the MAX308 is a single-ended 1-of-8 mux (16-pin, COM + NO1–NO8), while the MAX309CUE+T is a differential 2-of-4 mux (16-pin, COMA/COMB + two sets of NO1–NO4). Pin functions differ significantly - e.g., MAX308 pin 8 is COM, whereas MAX309 pin 8 is COMA and pin 9 is COMB - requiring distinct PCB layouts.
MAX309CUE+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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX309CUE+T FAQ
1.How can I place an order for MAX309CUE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX309CUE+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 MAX309CUE+T reliable?
The price and inventory of MAX309CUE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX309CUE+T is usually 5 days.
3.What payment methods are accepted for MAX309CUE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX309CUE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX309CUE+T?
MAX309CUE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX309CUE+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 MAX309CUE+T?
For technical support, including MAX309CUE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX309CUE+T requirements.
6.How does Aetrix verify that MAX309CUE+T is sourced from the original manufacturer or authorized distributors?
All MAX309CUE+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 MAX309CUE+T meets industry standards.
7.What is the process for return or replacement of MAX309CUE+T?
All MAX309CUE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX309CUE+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 MAX309CUE+T part is unused and in its original packaging.
Return procedure for MAX309CUE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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