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Analog Devices Inc./Maxim Integrated MAX325CSA+
- Part No.:
- MAX325CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX325CSA+.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:104
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Product details
Overview
MAX325CSA+ 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 MAX325CSA+ datasheet, MAX325CSA+ pinout, MAX325CSA+ application, or MAX325CSA+ equivalent, key selection criteria include its dual-configuration topology, 150ns max tON/100ns max tOFF timing, 2Ω max RON matching, and SO-8 package compatibility with space-constrained industrial and communications PCB layouts.
Technical Context
The MAX325CSA+ integrates two independent CMOS analog switches sharing a common V+ supply and ground, with separate logic-controlled IN1/IN2 inputs driving COM1/NO1/NC1 and COM2/NO2/NC2 paths. Its break-before-make architecture ensures no transient shorting between NC and NO terminals during state transitions - critical for protecting downstream circuitry in guidance and control systems.
Each switch supports rail-to-rail analog signal handling (0V to V+), exhibits <6Ω RON flatness over the full voltage range, and maintains <2.5nA leakage at +85°C. The device operates with TTL/CMOS-compatible logic thresholds when powered from +5V, while requiring rail-to-rail input drive at other supply voltages to minimize power consumption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V - enables direct integration into 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +25°C, 75Ω max over full temperature range - ensures minimal signal attenuation in precision DAC/ADC interfaces. |
| RON Matching | 2Ω max between channels - preserves amplitude balance in differential or dual-path signal routing. |
| Charge Injection | 5pC max - reduces voltage glitch and settling error in sample-and-hold and multiplexed data acquisition circuits. |
| Switching Speed | tON ≤ 150ns, tOFF ≤ 100ns - supports high-throughput signal routing in test equipment and real-time control loops. |
| Leakage Current | 100pA max off-leakage at +25°C, <2.5nA at +85°C - maintains signal integrity in high-impedance sensor front-ends. |
| ESD Rating | 2000V per Method 3015.7 - provides robust handling margin during board assembly and field service. |
Pinout & Package
MAX325CSA+ uses an 8-pin SO (Small Outline) package, 150-mil body width, RoHS-compliant, with standard JEDEC MS-012AC footprint. Pin 1 marked via notch or dot; pin 1 is NO1 (MAX325-specific) or NC1 (MAX324), depending on variant - confirmed as NO1 for MAX325.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Normally open analog terminal of Switch 1 - connects to COM1 only when IN1 = logic high. |
| 2 | COM1 | Common analog terminal of Switch 1 - bidirectional path shared between NO1 and NC1. |
| 3 | IN2 | Logic input controlling Switch 2 - active-high, TTL/CMOS compatible at +5V supply. |
| 4 | GND | Analog and digital ground reference - must be low-impedance for leakage and noise control. |
| 5 | NO2 | Normally open analog terminal of Switch 2 - connects to COM2 only when IN2 = logic high. |
| 6 | COM2 | Common analog terminal of Switch 2 - bidirectional path shared between NO2 and NC2. |
| 7 | IN1 | Logic input controlling Switch 1 - active-high, synchronized with IN2 for coordinated dual-channel control. |
| 8 | V+ | Positive supply rail - powers internal CMOS switches and logic; absolute max 17V. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 2ns min delay between NC opening and NO closing - prevents momentary shorts in safety-critical signal paths. |
| Rail-to-rail analog signal range | 0V to V+ - allows full-scale signal switching without clipping in +3.3V or +5V data converters. |
| Low power consumption | <5μW typical - extends battery life in portable instrumentation and handheld radios. |
| TTL/CMOS logic compatibility | VINH = 2.4V, VINL = 0.8V at +5V supply - eliminates need for external level shifters in microcontroller-driven systems. |
| High off-isolation | 72dB at 1MHz - suppresses crosstalk between adjacent switched signals in dense PCB layouts. |
Applications
| Battery-Operated Audio Routing | Guidance System Signal Multiplexing |
|---|---|
|
Use Scenario: Selecting between microphone inputs or speaker outputs in handheld military radios with strict power budgets. IC Role / Device Role / Timing Role: Dual-channel analog switch providing isolated signal path selection under microcontroller GPIO control. Use Value: 5μW quiescent power and 100pA leakage preserve battery runtime while maintaining SNR >90dB across audio band. |
Use Scenario: Routing inertial sensor outputs (gyro, accelerometer) to ADC inputs in missile guidance electronics. IC Role / Device Role / Timing Role: Precision SPST switch enabling fault-tolerant signal path redundancy with break-before-make assurance. Use Value: 2Ω RON matching and <6Ω flatness ensure gain consistency across dual-sensor channels for accurate vector computation. |
| Test Equipment Channel Selection | +3V/+5V DAC/ADC Interface |
|
Use Scenario: Configuring signal paths in automated test fixtures that route calibration references to DUTs. IC Role / Device Role / Timing Role: Fast-switching analog multiplexer supporting <150ns channel change for high-throughput parametric testing. Use Value: 72dB off-isolation and 85dB crosstalk suppression prevent measurement contamination between adjacent test channels. |
Use Scenario: Connecting multiple sensors to a shared SAR ADC in industrial process monitoring systems. IC Role / Device Role / Timing Role: Low-charge-injection analog switch minimizing hold-step error in sample-and-hold front-ends. Use Value: 5pC max charge injection limits voltage glitch to <500μV on 1nF hold capacitors - preserving 12-bit effective resolution. |
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+ | Extended temperature range (-40°C to +85°C) vs. MAX325CSA+ (0°C to +70°C); identical electrical specs and SO-8 package. | Suitable for automotive under-hood or industrial outdoor deployments where ambient exceeds 70°C. | Select MAX325ESA+ when operating beyond commercial temperature limits; otherwise MAX325CSA+ suffices for office/lab environments. |
| ADG1419BRMZ | Single-supply operation up to +15V, 1.5Ω typical RON, but no guaranteed break-before-make; 10-lead MSOP package. | Lower on-resistance benefits precision instrumentation, but lack of B-B-M limits use in fault-sensitive paths. | Choose ADG1419BRMZ only if ultra-low RON is prioritized over guaranteed break-before-make behavior. |
Compared with MAX325ESA+, the MAX325CSA+ offers identical performance at lower cost and qualification burden for commercial-temperature applications; compared with ADG1419BRMZ, it trades slightly higher RON for assured break-before-make timing and SO-8 footprint compatibility.
Availability
MAX325CSA+ is available at Aetrix Electronics and suitable for battery-operated systems, guidance and control systems, and test equipment requiring stable component supply across extended production cycles.
Supply support for MAX325CSA+ 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 aerospace markets since 1965.
The MAX323/MAX324/MAX325 family was engineered for precision, low-power, single-supply analog switching in portable and ruggedized systems - emphasizing leakage control, timing predictability, and rail-to-rail signal fidelity.
FAQ
What is the guaranteed break-before-make time for MAX325CSA+?
The MAX325CSA+ guarantees a minimum break-before-make delay of 2ns under RL = 300Ω and CL = 35pF conditions. This timing ensures no overlap between NC and NO contact closure during state transitions, preventing hazardous short circuits in safety-critical signal paths. The specification is tested and guaranteed across the full 0°C to +70°C operating range, and applies specifically to the MAX325CSA+ variant - not MAX323 or MAX324.
Does MAX325CSA+ support rail-to-rail analog signal switching?
Yes, the MAX325CSA+ supports analog signal ranges from 0V to V+ across both switches, with <6Ω RON flatness measured over the full voltage span. This capability enables distortion-free switching of full-scale signals from +3.3V or +5V DACs and ADCs without clipping or gain nonlinearity. The specification holds for V+ between +2.7V and +16V, and is validated at +25°C and across temperature extremes.
What is the maximum allowable supply voltage for MAX325CSA+?
The absolute maximum supply voltage for MAX325CSA+ is +17V, though recommended operating range is +2.7V to +16V. Exceeding +17V risks permanent damage due to internal junction breakdown. At +16V operation, on-resistance remains within 75Ω max, leakage stays below 5nA, and switching speed degrades by <15% versus +5V - all verified per datasheet Electrical Characteristics tables.
Is MAX325CSA+ TTL-compatible when powered from +3.3V?
No - TTL compatibility (VINH = 2.4V, VINL = 0.8V) is only guaranteed when MAX325CSA+ is powered from +5V ±10%. At +3.3V supply, logic inputs must be driven rail-to-rail (0V to +3.3V) to ensure reliable switching and minimize supply current. Driving IN1/IN2 outside this range may cause increased power draw or undefined channel states, as confirmed in the Applications Information section of the datasheet.
What package type and footprint does MAX325CSA+ use?
MAX325CSA+ uses an 8-pin Small Outline (SO) package, 150-mil body width, with JEDEC MS-012AC outline and RoHS-compliant lead finish. Its land pattern matches standard SOIC-8 footprints, including 1.27mm pitch, 3.9mm body width, and 4.9mm length. The package drawing is documented in Analog Devices' Package Information section (page 11), and is identical to MAX323CSA+ and MAX324CSA+ for drop-in layout reuse.
MAX325CSA+ 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX325CSA+ FAQ
1.How can I place an order for MAX325CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX325CSA+ 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 MAX325CSA+ reliable?
The price and inventory of MAX325CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX325CSA+ is usually 5 days.
3.What payment methods are accepted for MAX325CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX325CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX325CSA+?
MAX325CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX325CSA+ 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 MAX325CSA+?
For technical support, including MAX325CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX325CSA+ requirements.
6.How does Aetrix verify that MAX325CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX325CSA+ 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 MAX325CSA+ meets industry standards.
7.What is the process for return or replacement of MAX325CSA+?
All MAX325CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX325CSA+, 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 MAX325CSA+ part is unused and in its original packaging.
Return procedure for MAX325CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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