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Analog Devices Inc./Maxim Integrated MAX325ESA+T
- Part No.:
- MAX325ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX325ESA+T.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,630
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Product details
Overview
MAX325ESA+T 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, 150ns max tON, 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+T datasheet, MAX325ESA+T pinout, MAX325ESA+T application, or MAX325ESA+T equivalent, key selection criteria include verified break-before-make timing, leakage <2.5nA at +85°C, RON matching <2Ω, and SO-8 thermal derating of 5.88mW/°C above +70°C.
Technical Context
The MAX325ESA+T implements complementary MOSFET switch pairs per channel with rail-to-rail analog signal handling (0V to V+), enabling bidirectional signal flow on COM, NO, and NC terminals. Its internal logic accepts TTL/CMOS-compatible inputs when V+ = 5V, and supports rail-to-rail logic drive at other supply voltages.
Break-before-make operation is guaranteed only for the MAX325 variant (not MAX323/MAX324), with tD ≤ 5ns at TA = +25°C under RL = 300Ω/CL = 35pF conditions. Charge injection is limited to 5pC max, and off-isolation exceeds 72dB at 1MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +16V single supply - enables direct interface with 3.3V, 5V, and 12V systems without level shifters |
| On-Resistance (RON) | 60Ω max at +25°C, 75Ω max over full temperature range - ensures minimal signal attenuation in precision gain paths |
| RON Matching | <2Ω max between channels - critical for matched signal paths in differential or dual-channel instrumentation |
| Charge Injection | <5pC - limits voltage glitch in sample-and-hold and ADC front-end applications |
| Switching Speed | tON ≤ 150ns, tOFF ≤ 100ns - supports high-speed multiplexing up to ~3MHz effective bandwidth |
| Leakage Current | <2.5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and long-hold capacitors |
| ESD Rating | >2000V per Method 3015.7 - enhances robustness in handheld and field-deployable equipment |
Pinout & Package
MAX325ESA+T is housed in an 8-pin Small Outline (SO) package with 1.27mm pitch, 3.9mm × 4.9mm body, and thermal derating of 5.88mW/°C above +70°C (471mW max at +70°C).
| 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 terminal for Channel 1 - bidirectional I/O path shared with NO1/NC1 |
| 3 | IN2 | Logic input controlling Channel 2 - active-high, TTL/CMOS compatible at V+ = 5V |
| 4 | GND | Analog and digital ground reference - must be low-impedance for leakage and noise control |
| 5 | NO2 / NC2 | Channel 2 terminal: NO2 for MAX323, NC2 for MAX324/MAX325 - MAX325 uses NC2 as normally closed path |
| 6 | COM2 | Common analog terminal for Channel 2 - bidirectional I/O path shared with NO2/NC2 |
| 7 | IN1 | Logic input controlling Channel 1 - active-high, drives internal switch gate directly |
| 8 | V+ | Positive supply rail - powers internal logic and switch FETs; absolute max 17V |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no momentary short between NO and NC paths during transition - essential for fault-tolerant signal routing |
| Low 5pC charge injection | Minimizes hold-step error in precision sample-and-hold amplifiers and switched-capacitor filters |
| 60Ω max on-resistance | Reduces insertion loss and gain error in audio line drivers and DAC output buffers |
| 2.5nA max leakage at +85°C | Maintains DC accuracy in high-Z medical sensor front-ends and battery-monitoring shunt paths |
| TTL/CMOS logic compatibility | Eliminates need for external level translators when interfacing with microcontrollers or FPGAs at 5V |
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 / Timing Role: Dual SPST switch isolating high-impedance sense nodes and routing signals to shared ADC input. Use Value: 100pA max leakage and 5pC charge injection preserve measurement integrity during auto-ranging transitions. | Use Scenario: Headphone amplifier output switching between stereo sources (e.g., Bluetooth and AUX). IC Role / Device Role / Timing Role: Bidirectional analog switch enabling seamless source selection without pop/click artifacts. Use Value: Break-before-make timing <5ns prevents cross-conduction glitches that cause audible clicks. |
| Precision Sample-and-Hold Circuits | Military Radio Front-Ends |
Use Scenario: High-resolution data acquisition system capturing fast transients with minimal aperture jitter. IC Role / Device Role / Timing Role: Channel 1 (NO) samples input; Channel 2 (NC) holds previous value during acquisition window. Use Value: Matched RON (<2Ω) and flat RON (≤6Ω) ensure consistent time constants across hold capacitor charging paths. | Use Scenario: RF receiver protecting sensitive LNA inputs during transmit/receive switching. IC Role / Device Role / Timing Role: Isolating antenna path from baseband circuitry using NC path as default-safe state. Use Value: 2000V ESD rating and -40°C to +85°C operation meet MIL-STD-810G environmental requirements. |
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 (9.09mW/°C derating) | Suitable for prototyping or through-hole PCBs; not recommended for space-constrained portable designs | Select MAX325EPA+ only when DIP layout compatibility or hand-soldering is required |
| ADG1419BRMZ | Single-supply capable (±5V dual or +12V single), 0.6Ω typical RON, but no guaranteed break-before-make and 12ns tON/tOFF | Better for low-RON precision muxes; unsuitable where break-before-make is mandatory for safety | Choose ADG1419BRMZ for ultra-low on-resistance needs, but verify absence of B-B-M is acceptable in your signal path |
Compared with MAX325ESA+T, MAX325EPA+ offers identical switching performance in a legacy DIP package with inferior thermal management, while ADG1419BRMZ trades guaranteed break-before-make for lower RON and faster switching - making MAX325ESA+T the optimal choice for safety-critical, battery-operated, or thermally constrained dual-path routing.
Availability
MAX325ESA+T is available at Aetrix Electronics and suitable for battery-operated instrumentation, audio signal routing, precision sample-and-hold circuits, military radio front-ends, and test equipment requiring stable component supply across industrial temperature ranges.
Supply support for MAX325ESA+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
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+T belongs to the MAX32x precision analog switch family, engineered for low-leakage, low-charge-injection signal routing in portable and high-reliability systems operating from single supplies.
FAQ
What is the guaranteed break-before-make timing specification for MAX325ESA+T?
The MAX325ESA+T guarantees break-before-make delay (tD) ≤ 5ns at TA = +25°C with RL = 300Ω and CL = 35pF, as specified in the Electrical Characteristics table. This parameter is unique to the MAX325 variant and is not offered in MAX323 or MAX324. The MAX325ESA+T's internal architecture enforces this timing to prevent signal shorting during channel transitions, making it suitable for fault-tolerant analog routing where simultaneous conduction must be avoided.
Does MAX325ESA+T support rail-to-rail analog signal switching?
Yes, the MAX325ESA+T supports analog signal ranges from GND to V+ (0V to +16V) with minimal RON variation - confirmed by RON vs. VCOM curves showing flatness ≤6Ω over the full range. This rail-to-rail capability allows direct interfacing with sensors, DACs, and ADCs without external level-shifting circuitry. The device remains bidirectional, so COM, NO, and NC pins function interchangeably as inputs or outputs depending on system topology.
What is the maximum allowable supply voltage for MAX325ESA+T, and what happens if exceeded?
The absolute maximum supply voltage for MAX325ESA+T is +17V referenced to GND. Exceeding this rating risks permanent damage due to junction breakdown or oxide stress, as stated in the Absolute Maximum Ratings table. Operation above +16V is not characterized or guaranteed. For reliable long-term use, Analog Devices recommends limiting V+ to ≤16V, especially in high-temperature environments where leakage and power dissipation increase nonlinearly.
How does the leakage current of MAX325ESA+T perform at elevated temperatures?
The MAX325ESA+T specifies COM on-leakage ≤10nA and NO/NC off-leakage ≤5nA over the full -40°C to +85°C operating range, with worst-case values tested at maximum hot temperature and correlated at +25°C. At +85°C, typical leakage remains below 2.5nA - critical for maintaining accuracy in high-impedance sample-and-hold circuits and battery voltage monitoring paths where even nanoamp-level errors degrade resolution.
Is MAX325ESA+T pin-compatible with other devices in the MAX32x family?
Yes, MAX325ESA+T shares identical pinout and package (8-pin SO) with MAX323ESA and MAX324ESA - all three variants use the same physical layout and terminal assignments (NO1/COM1/IN2/GND/NC2/COM2/IN1/V+). This allows drop-in replacement in existing designs when switching between NO/NO, NC/NC, or NO/NC configurations, provided logic polarity and break-before-make requirements align with the target application.
MAX325ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX325ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX325ESA+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 MAX325ESA+T reliable?
The price and inventory of MAX325ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX325ESA+T is usually 5 days.
3.What payment methods are accepted for MAX325ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX325ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX325ESA+T?
MAX325ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX325ESA+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 MAX325ESA+T?
For technical support, including MAX325ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX325ESA+T requirements.
6.How does Aetrix verify that MAX325ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX325ESA+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 MAX325ESA+T meets industry standards.
7.What is the process for return or replacement of MAX325ESA+T?
All MAX325ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX325ESA+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 MAX325ESA+T part is unused and in its original packaging.
Return procedure for MAX325ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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