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Analog Devices Inc./Maxim Integrated MAX306EQI
- Part No.:
- MAX306EQI
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
MAX306EQI.pdf
- Description:
- IC MUX 16:1 100OHM 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,307
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Product details
Overview
MAX306EQI from Maxim Integrated is a precision 1-of-16 single-ended CMOS analog multiplexer with ≤100Ω on-resistance, <5Ω channel-to-channel matching, and <10pC charge injection. It operates from ±4.5V to ±20V or +5V to +30V supplies and delivers rail-to-rail signal handling for test equipment and military radio front-ends.
For engineers reviewing the MAX306EQI datasheet, MAX306EQI pinout, MAX306EQI application, or MAX306EQI equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), low leakage (<2.5nA NO-off at +85°C), ESD protection (>2000V), and compatibility with industry-standard DG406/DG506A replacements.
Technical Context
The MAX306EQI implements a 4-bit address-decoded, enable-controlled 16:1 analog switch matrix using Maxim's 44V silicon-gate CMOS process. Its architecture guarantees monotonic on-resistance over ±15V analog signal range and supports break-before-make switching with ≤40ns interval.
It features TTL/CMOS-compatible digital inputs with ≤1µA input current, rail-to-rail analog signal handling up to ±15V, and dual-supply operation without level-shifting. Charge injection is tightly controlled (<10pC) to minimize sampling error in precision sample-and-hold circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V (dual supply) or 0–12V (single +12V supply): supports full-rail signal routing without clipping. |
| On-Resistance (RON) | ≤100Ω at +25°C, ≤125Ω over -40°C to +85°C: ensures minimal voltage drop and gain error in sensor/metering paths. |
| On-Resistance Matching | ≤5Ω max between channels: critical for multi-channel instrumentation requiring matched gain/attenuation. |
| Charge Injection | <10pC: limits voltage glitch on hold capacitors, enabling sub-12-bit accuracy in sample-and-hold designs. |
| NO Off-Leakage (INO(OFF)) | <2.5nA at +85°C: preserves signal integrity in high-impedance sensor interfaces and battery-powered systems. |
| Transition Time (tTRANS) | <250ns max: supports multiplexing of signals up to ~1MHz without significant settling distortion. |
| ESD Protection | >2000V HBM: enhances robustness in manufacturing, field deployment, and ruggedized military comms hardware. |
Pinout & Package
MAX306EQI 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply rail: accepts +5V to +30V (single) or up to +20V (bipolar); must be powered before V-. |
| 2, 3, 13 | N.C. | No internal connection: left unconnected; no routing or grounding required. |
| 4–11 | NO16–NO9 | Analog inputs (bidirectional): 8 of 16 independent signal channels; compatible with ±15V or 0–12V swing. |
| 12 | GND | Digital ground reference: separate from analog return but tied at system star point. |
| 14–17 | A3–A0 | 4-bit binary address inputs: select one of 16 channels; CMOS/TTL compatible (0.8V/2.4V thresholds). |
| 18 | EN | Active-high enable: disables all switches when low; enables decoding when high. |
| 19–26 | NO1–NO8 | Analog inputs (bidirectional): remaining 8 channels; electrically identical to NO9–NO16. |
| 27 | V- | Negative supply rail: accepts -4.5V to -20V (bipolar) or GND (single supply); sequencing critical. |
| 28 | COM | Common output terminal: bidirectional path shared across all 16 channels; handles rail-to-rail signals. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs from V- to V+ without clipping-enables direct interfacing with op-amp outputs and sensor bridges. |
| Guaranteed on-resistance flatness | ≤7Ω variation across full ±15V signal range-minimizes gain nonlinearity in precision measurement front-ends. |
| Plug-in upgrade for DG406/DG506A | PIN-AND-FUNCTION compatible replacement-no PCB redesign needed when upgrading legacy industrial test gear. |
| Low power consumption | <1.25mW typical quiescent dissipation-extends battery life in portable guidance and control systems. |
| TTL/CMOS logic compatibility | Direct interface with microcontrollers and FPGAs without level shifters-reduces BOM count and layout complexity. |
Applications
| Test Equipment Signal Routing | Military Radio Front-End Switching |
|---|---|
|
Use Scenario: Automated test systems route multiple sensor or calibration signals to a shared ADC or DMM. IC Role / Device Role / Timing Role: 16:1 analog multiplexer selecting calibrated reference voltages or transducer outputs under microcontroller control. Use Value: ≤5Ω RON matching ensures consistent gain scaling across channels; <2.5nA leakage prevents drift in high-Z calibration paths. |
Use Scenario: HF/VHF radios require fast, low-distortion switching between antenna feeds, filters, and amplifiers. IC Role / Device Role / Timing Role: High-isolation analog switch managing RF front-end signal paths in compact, temperature-stressed enclosures. Use Value: >2000V ESD rating withstands field handling; <250ns tTRANS supports rapid band-switching without signal dropout. |
| Sample-and-Hold Circuits | Battery-Operated Guidance Systems |
|
Use Scenario: Precision data acquisition systems capture synchronized samples from multiple sensors before digitization. IC Role / Device Role / Timing Role: Channel selector feeding a hold capacitor; low charge injection prevents voltage step errors during acquisition. Use Value: <10pC charge injection limits hold-step error to <1LSB in 12-bit 100pF hold-capacitor designs. |
Use Scenario: Portable inertial navigation units switch between gyro, accelerometer, and magnetometer outputs under low-power MCU control. IC Role / Device Role / Timing Role: Low-quiescent analog mux enabling duty-cycled sensor polling to extend battery runtime. Use Value: <1.25mW power draw minimizes standby current; -40°C to +85°C rating ensures reliability in vehicle-mounted deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX306EUI | TSSOP-28 package (4.4mm × 6.5mm), thinner profile; same electrical specs and temp range (-40°C to +85°C). | Better suited for space-constrained PCBs; requires finer-pitch reflow profile vs. PLCC. | Select MAX306EUI when board area or Z-height is constrained; use MAX306EQI for through-hole prototyping or higher mechanical robustness. |
| ADG406BRUZ | Analog Devices part: 16:1 mux, 25Ω typical RON, wider -40°C to +125°C range, but higher 25nA INO(OFF) at +85°C. | Preferred for extended-temp industrial control; less suitable for ultra-low-leakage metrology applications. | Choose ADG406BRUZ only if operating above +85°C is required; MAX306EQI remains superior for low-leakage, high-matching needs below +85°C. |
Compared with MAX306EUI, MAX306EQI offers greater mechanical stability and easier hand-soldering, while ADG406BRUZ trades off leakage and matching for extended temperature range-making MAX306EQI optimal for precision test and military comms where parameter consistency is prioritized.
Availability
MAX306EQI is available at Aetrix Electronics and suitable for test equipment, military radio subsystems, and battery-operated guidance systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX306EQI 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 high-performance analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX306 series targets precision analog signal routing in environments requiring low leakage, tight RON matching, and rugged operation-specifically engineered for test instrumentation, avionics, and secure comms hardware.
FAQ
What is the maximum analog signal voltage range supported by the MAX306EQI?
The MAX306EQI supports an analog signal range of ±15V when operated from dual ±15V supplies, or 0V to +12V with a +12V single supply. This rail-to-rail capability allows direct interfacing with op-amps and sensors without attenuation or level shifting. The device maintains specified on-resistance flatness and leakage performance across this full range, as verified in the datasheet's Typical Operating Characteristics plots.
Does the MAX306EQI require external protection diodes for overvoltage conditions?
No, the MAX306EQI does not require external protection diodes under normal operation, as its inputs include internal clamping diodes. However, the datasheet recommends proper power-supply sequencing (V+ first, then V-, then logic) to avoid latch-up. If sequencing cannot be guaranteed, two small-signal diodes may be added in series with V+ and V−-though this reduces the usable analog range by ~1V per rail without affecting RON or leakage specs.
Is the MAX306EQI pin-compatible with the DG406 analog multiplexer?
Yes, the MAX306EQI is a plug-in upgrade for the DG406, with identical pinout, function mapping, and logic-level compatibility. It retains the same 28-pin PLCC footprint and truth table behavior while improving on-resistance matching (<5Ω vs. typical 10Ω), charge injection (<10pC vs. ~25pC), and ESD rating (>2000V vs. ~1000V). No PCB changes are required for drop-in replacement in existing DG406 designs.
What is the typical on-resistance temperature coefficient of the MAX306EQI?
The MAX306EQI exhibits a positive temperature coefficient for on-resistance, increasing from ~60Ω at +25°C to ≤125Ω over its full -40°C to +85°C operating range. The datasheet guarantees ΔRON ≤8Ω across temperature, ensuring stable channel matching even under thermal stress. This behavior is confirmed in Figure TOC-02 and TOC-04, which plot RON versus VCOM at multiple temperatures.
Can the MAX306EQI operate from unbalanced supplies such as +24V and -5V?
Yes, the MAX306EQI supports unbalanced supplies-for example, +24V and -5V-as long as the total voltage difference (V+ − V−) does not exceed +44V and each supply remains within its absolute maximum ratings (V+ ≤ +44V, V− ≥ -0.3V). The analog signal range adjusts accordingly (e.g., -5V to +24V), and all key specs-including leakage, RON, and switching speed-remain valid per the Electrical Characteristics tables.
MAX306EQI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for MAX306EQI through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX306EQI 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 reliable?
The price and inventory of MAX306EQI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX306EQI is usually 5 days.
3.What payment methods are accepted for MAX306EQI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX306EQI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX306EQI?
MAX306EQI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX306EQI 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?
For technical support, including MAX306EQI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX306EQI requirements.
6.How does Aetrix verify that MAX306EQI is sourced from the original manufacturer or authorized distributors?
All MAX306EQI 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 meets industry standards.
7.What is the process for return or replacement of MAX306EQI?
All MAX306EQI units undergo pre-shipment inspection (PSI). If there is an issue with MAX306EQI, 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 part is unused and in its original packaging.
Return procedure for MAX306EQI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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