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Analog Devices Inc./Maxim Integrated MAX325EUA+
- Part No.:
- MAX325EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX325EUA+.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,041
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Product details
Overview
MAX325EUA+ from Analog Devices is a precision dual SPST analog switch with one normally open (NO) and one normally closed (NC) channel, designed for single-supply operation from +2.7V to +16V. It delivers 60Ω max on-resistance, <5pC charge injection, guaranteed break-before-make switching, and 100pA max off-leakage - enabling high-fidelity signal routing in battery-powered audio/video systems and precision data acquisition.
For engineers reviewing the MAX325EUA+ datasheet, MAX325EUA+ pinout, MAX325EUA+ application, or MAX325EUA+ equivalent, key selection criteria include its dual-configuration topology, -40°C to +85°C industrial temperature range, µMAX-8 package footprint, and verified break-before-make timing critical for avoiding signal shorting in multiplexed sensor or DAC/ADC interfaces.
Technical Context
The MAX325EUA+ integrates two independent CMOS SPST switches sharing a common V+ and GND, with separate logic inputs (IN1, IN2) controlling COM1–NO1/NC1 and COM2–NO2/NC2 paths. Its internal architecture ensures guaranteed break-before-make operation exclusively for the MAX325 variant, with tD ≤ 5ns at +25°C under RL = 300Ω, CL = 35pF conditions.
It operates rail-to-rail for analog signals (0V to V+), supports TTL/CMOS logic levels at +5V supply, and maintains RON flatness ≤6Ω and matching ≤2Ω between channels - enabling matched gain/attenuation paths in instrumentation front-ends and sample-and-hold circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V single supply - enables direct interface with 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +25°C, 75Ω max over -40°C to +85°C - ensures minimal signal attenuation and thermal drift in precision analog paths. |
| RON Matching | ≤2Ω max between channels at +25°C - critical for differential or ratiometric measurements requiring matched path impedance. |
| Charge Injection | ≤5pC - limits voltage glitch on sampled nodes, supporting accurate low-distortion sampling in ADC driver stages. |
| Break-Before-Make Delay | ≤5ns (MAX325 only) - prevents momentary shorting during channel switching in multiplexed sensor or reference selection. |
| Off-Leakage Current | ≤100pA at +25°C, ≤5nA over full temperature range - preserves accuracy in high-impedance, low-current applications like pH sensors. |
| Switching Speed | tON ≤ 150ns, tOFF ≤ 100ns at +5V - supports >1MHz multiplexing rates in automated test equipment and real-time control loops. |
Pinout & Package
MAX325EUA+ uses an 8-pin µMAX package (3.0mm × 3.0mm, 0.5mm pitch), RoHS-compliant, with exposed pad for thermal enhancement. Pin 1 is NO1 (MAX325) or NC1 (MAX324); pin 5 is NC2 (MAX325/MAX324) or NO2 (MAX323).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Normally open analog terminal for Switch 1 - connects to COM1 only when IN1 = logic high. |
| 2 | COM1 | Common analog node for Switch 1 - bidirectional I/O shared between NO1 and NC1 paths. |
| 3 | IN2 | Logic input for Switch 2 - controls connection state of COM2–NO2/NC2 pair. |
| 4 | GND | Analog and digital ground reference - must be low-impedance for leakage and noise control. |
| 5 | NC2 | Normally closed analog terminal for Switch 2 - connects to COM2 when IN2 = logic low (break-before-make enforced). |
| 6 | COM2 | Common analog node for Switch 2 - bidirectional I/O shared between NO2 and NC2 paths. |
| 7 | IN1 | Logic input for Switch 1 - controls connection state of COM1–NO1/NC1 pair. |
| 8 | V+ | Positive supply rail - powers internal CMOS switches and logic; absolute max 17V. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no overlap between NO and NC conduction in MAX325 configuration - eliminates signal shorting during channel transitions. |
| Rail-to-rail analog signal range | Supports 0V to V+ signal switching without clipping - preserves full dynamic range in ±10V or 0–5V sensor interfaces. |
| Low 5μW power consumption | Enables always-on operation in portable medical devices and IoT edge nodes without compromising battery life. |
| TTL/CMOS logic compatibility at +5V | Accepts standard 0.8V/2.4V logic thresholds - simplifies interface with microcontrollers and FPGAs without external level shifters. |
| 2000V ESD protection (HBM) | Meets industrial handling requirements - reduces risk of field failure during PCB assembly and system integration. |
Applications
| Audio Signal Routing | High-Speed Data Acquisition |
|---|---|
|
Use Scenario: Selecting between microphone inputs or headphone outputs in portable audio codecs. IC Role / Device Role / Timing Role: Dual-channel analog switch providing isolated, low-distortion signal paths with break-before-make to prevent pop/click artifacts. Use Value: ≤5pC charge injection and ≤100pA leakage preserve SNR >95dB and THD+N <0.002% in 24-bit audio chains. |
Use Scenario: Multiplexing multiple sensor outputs into a single high-speed ADC in test equipment. IC Role / Device Role / Timing Role: Precision SPST switch enabling synchronized channel scanning with guaranteed non-overlapping conduction windows. Use Value: ≤5ns break-before-make delay and ≤150ns tON support 5MSps effective sampling across 8 channels. |
| Battery-Powered Instrumentation | Military Radio Front-End |
|
Use Scenario: Configuring gain stages and filter paths in handheld multimeters or portable oscilloscopes. IC Role / Device Role / Timing Role: Low-power analog switch managing signal conditioning paths while maintaining sub-nA bias current integrity. Use Value: 5μW quiescent power and ≤5nA max leakage at +85°C extend runtime and preserve measurement accuracy over temperature. |
Use Scenario: RF front-end signal routing in manpack radios requiring ESD-hardened, wide-voltage-range switching. IC Role / Device Role / Timing Role: Single-supply SPST switch handling baseband audio and control signals across extended military temperature range. Use Value: -40°C to +85°C rating, 2000V HBM ESD, and 16V max supply enable reliable operation in harsh environmental deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX325ESA+ | Same electrical specs, but 8-pin SO package (3.9mm × 4.9mm) - larger footprint, higher thermal resistance. | Suitable for through-hole or legacy SO-based designs where µMAX reflow capability is unavailable. | Select MAX325ESA+ when board assembly uses SOIC pick-and-place or requires higher power dissipation margin. |
| ADG1419BRMZ | Single-supply compatible (±5V dual or +12V single), 0.6Ω typical RON, but no guaranteed break-before-make; 10ns tON. | Better for ultra-low-RON precision muxes where break-before-make is managed externally or not required. | Choose ADG1419BRMZ only if RON <1Ω is mandatory and break-before-make timing can be controlled by system-level logic. |
Compared with MAX325EUA+, MAX325ESA+ offers identical functionality in a larger SO package ideal for manual prototyping, while ADG1419BRMZ trades guaranteed break-before-make for lower on-resistance and faster switching - making it suitable for high-precision, non-multiplexed signal routing where timing coordination is handled outside the switch.
Availability
MAX325EUA+ is available at Aetrix Electronics and suitable for battery-operated instrumentation, audio/video switching systems, and high-reliability military communications equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX325EUA+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX323/MAX324/MAX325 family was engineered for precision, low-power, single-supply analog signal routing in space-constrained, battery-sensitive applications - emphasizing leakage control, charge injection minimization, and guaranteed switching behavior.
FAQ
What is the guaranteed break-before-make timing specification for MAX325EUA+?
The MAX325EUA+ guarantees a break-before-make delay (tD) of ≤5ns at +25°C with RL = 300Ω and CL = 35pF, and ≤240ns over the full -40°C to +85°C operating range. This parameter is exclusive to the MAX325 variant and ensures no overlap between NO and NC conduction paths during logic transitions - a critical feature for preventing signal shorts in multiplexed sensor or reference selection circuits using the MAX325EUA+.
Does MAX325EUA+ support rail-to-rail analog signal switching?
Yes, the MAX325EUA+ supports analog signal voltages from 0V to V+ across its NO, NC, and COM terminals - enabling full-supply-range switching without distortion or clipping. This rail-to-rail capability is confirmed in the Electrical Characteristics table for both +5V and +3.3V supplies, and applies to all operating temperatures. The MAX325EUA+ maintains ≤6Ω RON flatness over this range, ensuring consistent performance regardless of signal amplitude.
What is the maximum allowable supply voltage for MAX325EUA+?
The absolute maximum supply voltage for MAX325EUA+ is +17V, though the recommended operating range is +2.7V to +16V. Exceeding +17V risks permanent damage per Absolute Maximum Ratings. At +16V, the device maintains 60Ω max RON and <5pC charge injection, making it suitable for industrial 12V and telecom 48V-derived rails (with appropriate regulation). The MAX325EUA+'s internal protection diodes clamp input signals to within ~0.7V of V+, further enhancing robustness.
How does MAX325EUA+ handle logic-level compatibility across different supply voltages?
The MAX325EUA+ is TTL/CMOS-compatible only when powered from +5V (VINL = 0.8V, VINH = 2.4V). At other supply voltages - such as +3.3V or +12V - logic inputs must be driven rail-to-rail (0V to V+) to ensure reliable switching and minimize supply current. Driving IN1/IN2 outside this range increases leakage and may cause erratic behavior. This behavior is explicitly documented in the Applications Information section of the MAX325EUA+ datasheet.
What package type and dimensions does MAX325EUA+ use?
The MAX325EUA+ uses an 8-pin µMAX package measuring 3.0mm × 3.0mm with 0.5mm lead pitch and an exposed thermal pad. Per Package Information drawings, its height is 0.8mm max, and it complies with RoHS standards (indicated by the "+" suffix). This compact footprint provides superior thermal performance vs. SOIC and DIP variants, supporting high-density layouts in portable and aerospace-grade electronics using the MAX325EUA+.
MAX325EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 60Ohm
- Channel-to-Channel Matching (ΔRon):
- 800mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 16V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 9pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX325EUA+ FAQ
1.How can I place an order for MAX325EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX325EUA+ 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 MAX325EUA+ reliable?
The price and inventory of MAX325EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX325EUA+ is usually 5 days.
3.What payment methods are accepted for MAX325EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX325EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX325EUA+?
MAX325EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX325EUA+ 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 MAX325EUA+?
For technical support, including MAX325EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX325EUA+ requirements.
6.How does Aetrix verify that MAX325EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX325EUA+ 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 MAX325EUA+ meets industry standards.
7.What is the process for return or replacement of MAX325EUA+?
All MAX325EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX325EUA+, 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 MAX325EUA+ part is unused and in its original packaging.
Return procedure for MAX325EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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