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Analog Devices Inc./Maxim Integrated MAX309CUE+
- Part No.:
- MAX309CUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX309CUE+.pdf
- Description:
- IC SWITCH SP4TX2 100OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,772
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Product details
Overview
MAX309CUE+ 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, <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 equipment and military comms.
For engineers reviewing the MAX309CUE+ datasheet, MAX309CUE+ pinout, MAX309CUE+ application, or MAX309CUE+ equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), break-before-make timing (115–450ns), dual-supply flexibility, and compatibility with legacy DG409/DG509A designs without layout changes.
Technical Context
The MAX309CUE+ implements a fully differential 2-of-4 switching architecture with independent COMA/COMB outputs and two parallel 4-channel input banks (NO1A–NO4A and NO1B–NO4B). Its CMOS decode logic accepts A0/A1 address inputs and an active-high EN signal, supporting TTL/CMOS-compatible control with <1µA input current.
It operates across ±5V to ±20V bipolar supplies or +5V to +30V single supply (V− tied to GND), maintaining low leakage (<20nA COM-off at +85°C) and fast transition time (<250ns typ.) while delivering <120Ω on-resistance over full signal range (±10V) at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | <120Ω max - ensures minimal signal attenuation and gain error in precision gain-setting or sensor front-end paths |
| On-Resistance Matching | <5Ω max - enables matched channel performance critical for differential signal integrity and ratiometric measurements |
| Charge Injection | <10pC - reduces voltage glitch and settling error in sample-and-hold and ADC driver applications |
| NO-Off Leakage | <5nA at +85°C - preserves accuracy in high-impedance sensor multiplexing and battery-powered measurement systems |
| Analog Signal Range | ±10V (dual), 0–12V (single) - supports full-rail operation with industrial and military-grade signal levels |
| Enable Turn-On Time | 100–600ns - enables high-speed channel switching in automated test equipment scan sequences |
| ESD Protection | >2000V HBM - enhances robustness during board handling and system integration without external protection |
Pinout & Package
MAX309CUE+ is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch), optimized for space-constrained PCB layouts while maintaining thermal performance (derating: 6.7mW/°C above +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1 | Binary Address Inputs | Select one of four differential pairs (00→CH1, 01→CH2, 10→CH3, 11→CH4); CMOS/TTL compatible |
| EN | Active-High Enable | Disables all switches when low; eliminates crosstalk and leakage during idle states |
| NO1A–NO4A, NO1B–NO4B | Differential Input Terminals | Two independent 4-channel banks support simultaneous dual-path routing (e.g., IN+/IN−) |
| COMA, COMB | Differential Output Terminals | Deliver selected differential pair to downstream circuitry (e.g., instrumentation amplifier input) |
| V+, V−, GND | Power Supply Connections | V+ and V− set analog signal swing range; GND is reference for logic inputs in single-supply mode |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports full analog swing from V− to V+ without clipping - essential for ±15V op-amp interfaces and wide-dynamic-range sensors |
| Guaranteed on-resistance flatness | ≤7Ω variation across ±10V range - maintains linearity in precision attenuator and programmable-gain amplifier circuits |
| Low power consumption | <300µW typical - extends battery life in portable test gear and handheld military radios |
| Plug-in upgrade for DG409/DG509A | Pin- and function-compatible replacement - allows drop-in performance enhancement without redesign or requalification |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V thresholds - simplifies interface with microcontrollers, FPGAs, and legacy digital controllers |
Applications
| Military Radios | Automatic Test Equipment |
|---|---|
Use Scenario: Channel selection in multi-band RF transceivers requiring low distortion and high isolation between receive paths. IC Role / Device Role / Timing Role: Differential analog mux routes antenna diversity signals to baseband processing with minimal crosstalk and charge injection. Use Value: >75dB off-isolation and <250ns transition time enable rapid band switching without signal corruption or settling delay. | Use Scenario: High-speed scanning of DUT analog stimulus/response channels in production test fixtures. IC Role / Device Role / Timing Role: Precision switch matrix routes calibrated voltage/current sources to device pins under microcontroller control. Use Value: <5Ω on-resistance match and <10pC charge injection ensure measurement repeatability across 1000+ test cycles. |
| Sample-and-Hold Circuits | Heads-Up Displays |
Use Scenario: Multiplexing multiple sensor inputs (e.g., temperature, pressure, acceleration) into a shared S/H amplifier before ADC conversion. IC Role / Device Role / Timing Role: Low-leakage, low-charge-injection analog switch gates analog signals to hold capacitor with minimal droop or glitch. Use Value: <5nA NO-off leakage at +85°C and <10pC charge injection preserve hold accuracy over extended acquisition windows. | Use Scenario: Routing video sync and analog RGB signals in avionics HUD systems where EMI resilience and signal fidelity are critical. IC Role / Device Role / Timing Role: Differential mux selects between primary and backup display drivers while rejecting common-mode noise. Use Value: Dual 4-channel structure supports redundant signal paths; >92dB crosstalk rejection prevents ghosting or interference between channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX309EUE+ | Same die, extended temperature range (−40°C to +85°C) and higher ESD rating (≥2000V HBM) | Suitable for industrial and automotive environments where ambient temperature exceeds +70°C | Select MAX309EUE+ for deployments outside commercial temperature grade; identical pinout and functionality |
| ADG409BRUZ | Higher on-resistance (100Ω typ.), no guaranteed flatness spec, 16-lead TSSOP but different pin mapping (e.g., EN on Pin 1) | Functional alternative only after PCB layout revision; lacks guaranteed matching and charge injection specs | Use ADG409BRUZ only if MAX309CUE+ is unavailable and design allows re-layout; verify timing and leakage in final system |
Compared with MAX309EUE+, the MAX309CUE+ offers identical electrical performance at lower cost for commercial-temperature applications; compared with ADG409BRUZ, it delivers superior matching, lower charge injection, and true plug-in compatibility - eliminating redesign risk in legacy DG409-based systems.
Availability
MAX309CUE+ is available at Aetrix Electronics and suitable for automatic test equipment, military radio subsystems, and heads-up display signal routing requiring stable component supply across long production lifecycles.
Supply support for MAX309CUE+ 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 for precision analog signal routing in mission-critical systems - emphasizing low distortion, temperature-stable matching, and ruggedized operation across military and industrial environments.
FAQ
What is the maximum analog signal range supported by the MAX309CUE+?
The MAX309CUE+ supports an analog signal range of ±10V with ±15V supplies and 0V to +12V with +12V single supply. When operated with ±20V supplies, the full rail-to-rail range extends to ±20V. This range is validated per the datasheet's ELECTRICAL CHARACTERISTICS tables and confirmed in Typical Operating Characteristics (TOC-01 through TOC-04), ensuring reliable operation without clipping or increased on-resistance distortion in the MAX309CUE+.
Does the MAX309CUE+ require external pull-up resistors on its address or enable pins?
No, the MAX309CUE+ does not require external pull-up resistors. Its CMOS inputs (A0, A1, EN) exhibit low input current (<±1µA) and are fully TTL/CMOS-compatible with standard 0.8V/2.4V logic thresholds. Internal input structure eliminates need for external biasing - verified in the "Input Current" specifications (IAL, IAH) and functional diagrams in the MAX309CUE+ datasheet.
Can the MAX309CUE+ be used with unbalanced supplies like +24V and −5V?
Yes, the MAX309CUE+ supports unbalanced supplies such as +24V and −5V, provided the total voltage difference (V+ − V−) does not exceed +44V and both supplies remain within absolute maximum ratings (V+ ≤ 44V referenced to V−, GND ≤ 25V referenced to V−). This capability is explicitly stated in the Applications Information section and confirmed in Absolute Maximum Ratings - making the MAX309CUE+ adaptable to non-symmetric power architectures.
Is the MAX309CUE+ pin-compatible with the DG409 analog multiplexer?
Yes, the MAX309CUE+ is a direct pin-compatible and function-compatible plug-in upgrade for the DG409. The pin configuration (16-pin TSSOP), terminal functions (A0/A1/EN/COMA/COMB/NOxA/NOxB), and truth table match exactly. This is documented in the General Description ("plug-in upgrades for DG409") and Pin Configuration diagrams - enabling seamless replacement in existing DG409 designs without PCB modification.
What is the thermal derating specification for the MAX309CUE+ in TSSOP package?
The MAX309CUE+ in 16-pin TSSOP has a thermal derating factor of 6.7mW/°C above +70°C, resulting in a maximum continuous power dissipation of 457mW at +70°C. This value is specified in the Absolute Maximum Ratings table and applies to standard JEDEC-defined board conditions - critical for thermal design validation in compact enclosures where the MAX309CUE+ operates near temperature limits.
MAX309CUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX309CUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX309CUE+ 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+ reliable?
The price and inventory of MAX309CUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX309CUE+ is usually 5 days.
3.What payment methods are accepted for MAX309CUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX309CUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX309CUE+?
MAX309CUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX309CUE+ 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+?
For technical support, including MAX309CUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX309CUE+ requirements.
6.How does Aetrix verify that MAX309CUE+ is sourced from the original manufacturer or authorized distributors?
All MAX309CUE+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX309CUE+?
All MAX309CUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX309CUE+, 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+ part is unused and in its original packaging.
Return procedure for MAX309CUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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