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Analog Devices Inc./Maxim Integrated MAX325ESA+
- Part No.:
- MAX325ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX325ESA+.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:343
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Product details
Overview
MAX325ESA+ 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 operates across -40°C to +85°C in an 8-pin SO package - ideal for battery-powered audio/video routing and precision sample-and-hold circuits.
For engineers reviewing the MAX325ESA+ datasheet, MAX325ESA+ pinout, MAX325ESA+ application, or MAX325ESA+ equivalent, key selection criteria include its dual-configuration topology, RON flatness (<6Ω), low leakage (<2.5nA at +85°C), and TTL/CMOS logic compatibility under single-supply conditions.
Technical Context
The MAX325ESA+ implements complementary MOSFET-based SPST switches with independent control of NO and NC paths per channel. Its break-before-make timing (2ns min) prevents signal shorting during state transitions, and internal level-shifting enables rail-to-rail analog signal handling (0V to V+) without degradation in RON flatness.
It uses a single positive supply referenced to GND, with logic inputs compatible with TTL thresholds at +5V and rail-to-rail operation at other voltages. Charge injection is minimized via matched transistor geometry and layout symmetry, ensuring sub-5pC error in precision sampling applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V - supports wide-input industrial and battery systems without dual-supply complexity |
| On-Resistance (RON) | 60Ω max at +25°C, +5V - ensures minimal signal attenuation and gain error in sensor/ADC front-ends |
| RON Flatness | <6Ω max over full analog range - maintains consistent channel gain across 0V–V+ signal swing |
| Charge Injection | <5pC - limits voltage glitch in sample-and-hold and multiplexed DAC interfaces |
| Break-Before-Make Delay | 2ns min - eliminates momentary short-circuit risk when switching between NO/NC paths |
| Leakage Current | <2.5nA at +85°C - preserves accuracy in high-impedance sensor nodes and battery-monitoring circuits |
| Switching Speed | tON <150ns, tOFF <100ns - enables fast channel selection in test equipment and comms signal routing |
Pinout & Package
MAX325ESA+ is housed in an 8-pin Small Outline (SO) package, RoHS-compliant, with standard 1.27mm pitch and 5.00mm × 4.00mm body dimensions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Normally open analog terminal for Channel 1 - connects to COM1 only when IN1 = logic high |
| 2 | COM1 | Common analog node for Channel 1 - bidirectional I/O path shared with NO1 and NC2 |
| 3 | IN2 | Logic input controlling Channel 2 - high enables NO2, low enables NC2 |
| 4 | GND | Ground reference for supply and logic - must be low-impedance for leakage and noise control |
| 5 | NO2 | Normally open analog terminal for Channel 2 - connects to COM2 only when IN2 = logic high |
| 6 | COM2 | Common analog node for Channel 2 - bidirectional I/O path shared with NO2 and NC2 |
| 7 | IN1 | Logic input controlling Channel 1 - high enables NO1, low enables NC1 |
| 8 | V+ | Positive supply input - powers analog and logic sections; absolute max +17V |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no overlap between NO and NC conduction in MAX325ESA+, preventing signal contention in redundant path designs |
| Single-supply operation (+2.7V to +16V) | Eliminates need for negative rails or level shifters in portable and industrial systems powered by Li-ion or 12V supplies |
| Low on-resistance matching (<2Ω) | Enables precise ratiometric measurements across channels in multi-sensor data acquisition systems |
| TTL/CMOS logic compatible | Accepts standard +5V logic thresholds without external biasing - simplifies interface with microcontrollers and FPGAs |
| 2000V ESD protection (HBM) | Provides robust handling during board assembly and field operation without external TVS diodes |
Applications
| Battery-Powered Instrumentation | Audio Signal Routing |
|---|---|
|
Use Scenario: Portable multimeter front-end selecting between voltage, current, and resistance measurement paths. IC Role / Device Role: Dual-channel analog switch isolating signal paths while preserving low-leakage integrity. Use Value: 2.5nA max leakage at +85°C prevents offset drift; 60Ω RON ensures accurate ratiometric scaling with internal references. |
Use Scenario: Headphone jack detection and left/right channel routing in compact media players. IC Role / Device Role: SPST switch enabling/disabling audio paths with break-before-make to avoid pop/click artifacts. Use Value: <5pC charge injection minimizes audible transients; rail-to-rail analog range supports 0–3.3V audio signals directly. |
| Precision Sample-and-Hold Circuits | Military Radio Front-Ends |
|
Use Scenario: High-resolution ADC input conditioning where multiple sensors share a single converter. IC Role / Device Role: Channel selector with matched RON and flatness to maintain gain consistency across inputs. Use Value: <2Ω RON matching and <6Ω flatness reduce differential nonlinearity in 16-bit+ data acquisition. |
Use Scenario: RF receiver signal path switching between antenna diversity and calibration loops. IC Role / Device Role: Low-leakage, high-isolation analog switch operating across extended temperature range. Use Value: -40°C to +85°C rating and >72dB off-isolation ensure 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 |
|---|---|---|---|
| MAX325EPA+ | Same electrical specs but in 8-pin Plastic DIP package - larger footprint, higher thermal resistance | Suitable for prototyping or through-hole PCBs; not recommended for space-constrained portable designs | Select MAX325EPA+ only when DIP mounting or manual soldering is required; SO package preferred for production volume |
| ADG1419BRMZ | Higher RON (1.3Ω typ), wider bandwidth (180MHz), but requires dual ±15V or single +36V supply | Targeted at high-speed, high-voltage test equipment - not drop-in compatible due to supply and logic interface differences | Choose ADG1419BRMZ only when >100MHz bandwidth or >±15V signal handling is needed; MAX325ESA+ remains optimal for low-power, single-supply precision routing |
Compared with MAX325EPA+, MAX325ESA+ offers superior thermal performance and smaller PCB area; compared with ADG1419BRMZ, it provides lower power consumption (<5μW vs. ~1.2mW), simpler supply architecture, and guaranteed break-before-make - making it the preferred choice for battery-operated and thermally constrained precision analog systems.
Availability
MAX325ESA+ is available at Aetrix Electronics and suitable for battery-operated instrumentation, audio signal routing, and precision sample-and-hold circuits requiring stable component supply across industrial temperature ranges.
Supply support for MAX325ESA+ 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.
The MAX325ESA+ belongs to the MAX32x precision analog switch family, engineered for low-leakage, low-distortion signal routing in single-supply portable and ruggedized systems.
FAQ
What is the guaranteed break-before-make timing specification for MAX325ESA+?
The MAX325ESA+ guarantees a minimum break-before-make delay of 2ns under RL = 300Ω and CL = 35pF conditions. This parameter is explicitly specified in the Electrical Characteristics table for the MAX325 variant and ensures no overlap between NO and NC conduction paths during logic transitions - a critical feature distinguishing MAX325ESA+ from MAX323/MAX324 variants.
Does MAX325ESA+ support rail-to-rail analog signal switching?
Yes, MAX325ESA+ supports analog signal ranges from 0V to V+ across its NO, NC, and COM terminals. The datasheet confirms this in the "Analog Signal Range" parameter (0 to V+ V) and shows minimal RON variation over the full range in Typical Operating Characteristics plots - enabling accurate switching of signals spanning the entire supply rail without external level shifting.
What is the maximum allowable supply voltage for MAX325ESA+?
The absolute maximum supply voltage for MAX325ESA+ is +17V, as stated in the Absolute Maximum Ratings table. Operation beyond this limit risks permanent damage. For reliable long-term use, the recommended supply range remains +2.7V to +16V - with electrical characteristics fully specified across that span.
Can MAX325ESA+ operate from a +3.3V supply?
Yes, MAX325ESA+ is fully functional at +3.3V. The datasheet includes dedicated Electrical Characteristics tables for +3.0V to +3.6V operation, specifying RON (up to 275Ω max), switching times (tON up to 500ns), and leakage performance. Logic inputs require rail-to-rail drive (0V/3.3V) for optimal power efficiency and noise immunity.
Is MAX325ESA+ pin-compatible with other MAX32x variants in the same package?
Yes, MAX325ESA+ shares identical pinout and package (8-pin SO) with MAX323ESA+ and MAX324ESA+. All three variants use the same pin configuration: Pin 1 = NO1/NC1, Pin 2 = COM1, Pin 3 = IN2, Pin 4 = GND, Pin 5 = NO2/NC2, Pin 6 = COM2, Pin 7 = IN1, Pin 8 = V+. This allows direct substitution in layouts designed for the MAX32x family - though functional behavior differs per variant (NO/NO, NC/NC, or NO/NC).
MAX325ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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-SOIC
MAX325ESA+ FAQ
1.How can I place an order for MAX325ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX325ESA+ 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 MAX325ESA+ reliable?
The price and inventory of MAX325ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX325ESA+ is usually 5 days.
3.What payment methods are accepted for MAX325ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX325ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX325ESA+?
MAX325ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX325ESA+ 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 MAX325ESA+?
For technical support, including MAX325ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX325ESA+ requirements.
6.How does Aetrix verify that MAX325ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX325ESA+ 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 MAX325ESA+ meets industry standards.
7.What is the process for return or replacement of MAX325ESA+?
All MAX325ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX325ESA+, 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 MAX325ESA+ part is unused and in its original packaging.
Return procedure for MAX325ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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