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Analog Devices Inc./Maxim Integrated MAX306EQI+T
- Part No.:
- MAX306EQI+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
MAX306EQI+T.pdf
- Description:
- IC MUX 16:1 100OHM 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,111
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Product details
Overview
MAX306EQI+T from Maxim Integrated is a precision 1-of-16 single-ended CMOS analog multiplexer designed for high-fidelity signal routing in demanding instrumentation and control systems. It delivers <100Ω on-resistance (typ. 60Ω), <5Ω channel-to-channel matching, <10pC charge injection, rail-to-rail analog signal handling (±15V dual or 0–12V single supply), and operates across –40°C to +85°C.
For engineers reviewing the MAX306EQI+T datasheet, MAX306EQI+T pinout, MAX306EQI+T application, or MAX306EQI+T equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), ultra-low leakage (<2.5nA NO off-leakage at +85°C), ESD protection >2000V, and plug-in compatibility with industry-standard DG406/DG506A devices.
Technical Context
The MAX306EQI+T implements a monolithic CMOS decoder-driven 16-channel switch architecture with integrated level-shifting logic, enabling direct TTL/CMOS input compatibility across ±4.5V to ±20V or +5V to +30V supply ranges. Its silicon-gate process ensures low charge injection and matched on-resistance independent of signal voltage polarity.
It features break-before-make switching (10–40ns), fast transition time (<250ns typ.), and guaranteed performance over full temperature range - including on-resistance flatness ≤10Ω and leakage parameters fully tested at +85°C per data sheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V (dual) or 0–12V (single): supports rail-to-rail signal routing without clipping. |
| On-Resistance (RON) | 60Ω typ., 125Ω max (–40°C to +85°C): ensures minimal signal attenuation and gain error in precision measurement paths. |
| On-Resistance Match | ≤5Ω max (25°C), ≤8Ω max (full temp): enables accurate differential or ratiometric measurements across channels. |
| Charge Injection | <10pC: critical for sample-and-hold accuracy and low glitch energy in data acquisition front-ends. |
| NO Off-Leakage | <2.5nA at +85°C: preserves signal integrity in high-impedance sensor interfaces and battery-powered systems. |
| ESD Protection | >2000V HBM: enhances robustness during board assembly and field operation without external protection. |
| Transition Time | 110–400ns (temp-dependent): supports multiplexing rates up to ~2MHz in time-critical scanning applications. |
Pinout & Package
MAX306EQI+T is housed in a 28-pin PLCC (Plastic Leaded Chip Carrier) package with gull-wing leads, RoHS-compliant, rated for –40°C to +85°C operation. The package provides mechanical stability and thermal performance suitable for industrial PCB environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM (Pin 28) | Common output terminal | Bidirectional analog path shared by all 16 inputs; connects to ADC input, amplifier summing node, or test probe point. |
| NO1–NO16 (Pins 4–11, 19–26) | Analog input terminals | 16 bidirectional, low-leakage, low-capacitance (8pF off) channels for sensor, signal, or calibration source selection. |
| A0–A3 (Pins 14–17) | Binary address inputs | 4-bit parallel select lines accepting TTL/CMOS logic levels; enable deterministic channel addressing without microcontroller overhead. |
| EN (Pin 18) | Enable control input | Active-high logic input that disables all switches when low; allows power gating and system-level synchronization. |
| V+ (Pin 1), V− (Pin 27) | Supply rails | Support bipolar (±4.5V to ±20V) or single-supply (5V–30V) operation; V− tied to GND in single-supply mode. |
| GND (Pin 12) | Reference ground | Logic and analog reference common; must be low-impedance to minimize crosstalk and switching noise coupling. |
| N.C. (Pins 2, 3, 13) | No internal connection | Unbonded pads; no electrical function - must remain unconnected on PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed on-resistance flatness | ≤7Ω max variation over full analog signal range (±10V), ensuring consistent gain and linearity across input voltages. |
| Plug-in upgrade capability | Pin- and function-compatible replacement for DG406 and DG506A, enabling drop-in reliability and performance upgrades without layout change. |
| Rail-to-rail signal handling | Operates with analog signals extending to both supply rails, eliminating headroom loss in ±15V or 0–12V systems. |
| Low power consumption | <1.25mW typical quiescent power (I+ = 30µA, I− = ±1µA), ideal for portable and thermally constrained designs. |
| TTL/CMOS logic compatibility | Accepts standard 0.8V/2.4V logic thresholds with ≤1µA input current, simplifying interface to FPGAs, MCUs, and logic families. |
Applications
| Test Equipment Signal Routing | Sample-and-Hold Front-End |
|---|---|
Use Scenario: Automated test systems selecting between multiple DUT signals before digitization or conditioning. IC Role / Device Role / Timing Role: Precision analog switch matrix routing sensor outputs, reference voltages, or calibration sources to a shared ADC channel. Use Value: <5Ω on-resistance matching minimizes channel-to-channel gain error; <10pC charge injection prevents hold capacitor voltage corruption during switching. | Use Scenario: High-resolution data acquisition capturing transient waveforms from multi-sensor arrays. IC Role / Device Role / Timing Role: Low-glitch, low-leakage multiplexer feeding analog signals into a sample-and-hold amplifier prior to conversion. Use Value: <2.5nA NO off-leakage at +85°C preserves hold voltage integrity over extended acquisition windows; fast 250ns switching enables high channel scan rates. |
| Military Radio Signal Conditioning | Battery-Operated Guidance Systems |
Use Scenario: RF front-end calibration paths and IF signal switching in ruggedized communication transceivers. IC Role / Device Role / Timing Role: High-isolation (–69dB off-isolation), low-crosstalk (–92dB) analog switch isolating receive chains during transmit/receive transitions. Use Value: >2000V ESD rating withstands harsh handling environments; wide –40°C to +85°C operating range ensures reliability under extreme field conditions. | Use Scenario: Power-sensitive inertial navigation units requiring long operational life from primary Li-SOCl₂ cells. IC Role / Device Role / Timing Role: Low-quiescent-current (30µA) analog selector enabling periodic sensor polling while minimizing standby drain. Use Value: <1.25mW total power dissipation extends battery life; single +5V operation eliminates need for negative rail generation in compact form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX306EUI+T | Same electrical specs, but in 28-pin TSSOP (4.4mm × 9.7mm) vs. PLCC (11.5mm × 11.5mm); lower profile, finer pitch. | Better suited for space-constrained PCBs; requires rework of land pattern and soldering profile due to lead geometry. | Select for compact, high-density layouts where thermal mass and mechanical robustness are secondary to footprint size. |
| DG406DN-E3 | Higher on-resistance (120Ω typ.), wider matching (15Ω), no guaranteed flatness spec; lacks charge injection guarantee and ESD rating. | Acceptable for non-critical general-purpose switching; not recommended for precision metrology or low-leakage sensor interfaces. | Choose only when cost is primary constraint and performance margins allow degradation in matching, leakage, and switching fidelity. |
Compared with MAX306EUI+T, the MAX306EQI+T offers superior mechanical ruggedness and thermal dissipation in PLCC packaging, while DG406DN-E3 trades measurable performance in on-resistance, leakage, and ESD for legacy compatibility and lower unit cost - making MAX306EQI+T optimal for industrial and military applications demanding guaranteed precision and reliability.
Availability
MAX306EQI+T is available at Aetrix Electronics and suitable for test equipment, military radios, guidance systems, and battery-operated instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX306EQI+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 MAX306/MAX307 family was engineered specifically for precision analog signal routing in instrumentation-grade systems - emphasizing low distortion, repeatable channel matching, and robust operation in electrically noisy or thermally variable environments.
FAQ
What is the maximum analog signal voltage range supported by the MAX306EQI+T?
The MAX306EQI+T supports an analog signal range of ±15V when operated from dual supplies (±4.5V to ±20V), or 0V to +12V when operated from a single +5V to +30V supply. This rail-to-rail capability ensures full dynamic range utilization without signal clipping, and is verified across the full –40°C to +85°C temperature range per the datasheet's Electrical Characteristics tables.
Does the MAX306EQI+T require external pull-up resistors on its address or enable pins?
No, the MAX306EQI+T does not require external pull-up resistors on A0–A3 or EN pins. Its CMOS inputs exhibit ≤1.0µA leakage across temperature and supply voltage, and are fully compatible with standard TTL/CMOS logic drive levels (VAL ≤ 0.8V, VAH ≥ 2.4V). Internal design ensures reliable logic recognition without external biasing, simplifying interface design and reducing BOM count.
Can the MAX306EQI+T be used with unbalanced supply voltages such as +24V and –5V?
Yes, the MAX306EQI+T supports unbalanced supplies - for example, +24V and –5V - as long as the difference between V+ and V– does not exceed +44V and each supply remains within its absolute maximum rating (V+ ≤ +44V, V– ≥ –0.3V). This flexibility enables optimized power architecture in mixed-signal systems where positive and negative rails serve different subsystems.
What is the guaranteed on-resistance matching specification for the MAX306EQI+T over temperature?
The MAX306EQI+T guarantees on-resistance matching of ≤8Ω maximum across the full operating temperature range (–40°C to +85°C), defined as ΔRON = RON(MAX) – RON(MIN) at VCOM = ±10V and INO = –1.0mA. This is tighter than the +25°C-only spec of ≤5Ω and is 100% tested at hot temperature, ensuring predictable channel consistency in thermally varying environments.
Is the MAX306EQI+T pin-compatible with the DG406 or DG506A series?
Yes, the MAX306EQI+T is a documented plug-in upgrade for the DG406 and DG506A, sharing identical pinout, logic interface, and functional behavior. It retains the same 28-pin PLCC footprint and truth table while improving on-resistance, matching, charge injection, leakage, and ESD protection - allowing direct replacement without PCB modification or firmware changes.
MAX306EQI+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 16:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.5Ohm
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 200ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 130pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
MAX306EQI+T FAQ
1.How can I place an order for MAX306EQI+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX306EQI+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 MAX306EQI+T reliable?
The price and inventory of MAX306EQI+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX306EQI+T is usually 5 days.
3.What payment methods are accepted for MAX306EQI+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX306EQI+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX306EQI+T?
MAX306EQI+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX306EQI+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 MAX306EQI+T?
For technical support, including MAX306EQI+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX306EQI+T requirements.
6.How does Aetrix verify that MAX306EQI+T is sourced from the original manufacturer or authorized distributors?
All MAX306EQI+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 MAX306EQI+T meets industry standards.
7.What is the process for return or replacement of MAX306EQI+T?
All MAX306EQI+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX306EQI+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 MAX306EQI+T part is unused and in its original packaging.
Return procedure for MAX306EQI+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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