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Analog Devices Inc./Maxim Integrated MAX324CSA+
- Part No.:
- MAX324CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX324CSA+.pdf
- Description:
- IC SWITCH SPST-NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:217
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Product details
Overview
MAX324CSA+ from Analog Devices is a precision dual SPST analog switch with normally closed (NC) configuration, designed for single-supply operation from +2.7V to +16V. It delivers 60Ω max on-resistance, <5pC charge injection, 100ns max turn-off time, and 100pA max off-leakage at +25°C - enabling high-fidelity signal routing in low-power, battery-operated audio/video systems.
For engineers reviewing the MAX324CSA+ datasheet, MAX324CSA+ pinout, MAX324CSA+ application, or MAX324CSA+ equivalent, key selection criteria include NC-switch topology, guaranteed break-before-make timing (not applicable - MAX324 only), SO-8 package compatibility, and leakage performance below 2.5nA at +85°C.
Technical Context
The MAX324CSA+ implements two independent, bidirectional NC analog switches controlled by TTL/CMOS-compatible logic inputs (VINL ≤ 0.8V, VINH ≥ 2.4V). Its internal architecture ensures symmetrical conduction paths with matched on-resistance (<2Ω channel-to-channel ΔRON at +25°C) and flat RON (<6Ω variation over 0–V+ signal range).
It operates without external biasing, supports rail-to-rail analog signals (0V to V+), and integrates ESD protection exceeding 2000V per Method 3015.7. No break-before-make functionality is included - that feature is exclusive to the MAX325 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V - enables direct interface with 3.3V, 5V, and 12V systems without level-shifting |
| Max On-Resistance (RON) | 60Ω at +25°C, 75Ω over full temperature range - ensures minimal signal attenuation in precision sensor/ADC paths |
| Charge Injection | <5pC - critical for sample-and-hold accuracy and DAC output settling integrity |
| Turn-Off Time (tOFF) | 100ns max - supports high-speed multiplexing in test equipment and communications switching |
| Off-Leakage Current | ±5nA max over –40°C to +85°C - preserves signal integrity in high-impedance sensor front-ends |
| ESD Rating | >2000V per Method 3015.7 - provides robust handling margin during board assembly and field operation |
| Logic Compatibility | TTL/CMOS at +5V supply; rail-to-rail required at other voltages - simplifies control interface design |
Pinout & Package
MAX324CSA+ uses an 8-pin SO (Small Outline) package, 150-mil body width, with standard JEDEC MO-153 footprint. Pin 1 is marked with a beveled corner or dot; device orientation follows standard SO-8 top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC1 | Normally closed analog terminal for Switch 1 - connects to COM1 when IN1 = logic low |
| 2 | COM1 | Common analog node for Switch 1 - bidirectional path between NC1 and signal source/load |
| 3 | IN2 | Logic input controlling Switch 2 - active-low enables NC2 connection to COM2 |
| 4 | GND | Ground reference for logic and analog sections - must be low-impedance return path |
| 5 | NC2 | Normally closed analog terminal for Switch 2 - connects to COM2 when IN2 = logic low |
| 6 | COM2 | Common analog node for Switch 2 - bidirectional path between NC2 and signal source/load |
| 7 | IN1 | Logic input controlling Switch 1 - active-low enables NC1 connection to COM1 |
| 8 | V+ | Positive supply rail - powers analog switch core and logic interface; absolute max = +17V |
Key Features
| Feature | Design Value |
|---|---|
| Dual NC-switch topology | Provides fail-safe closed-path default state - maintains signal continuity during power loss or logic reset |
| 60Ω max RON with <2Ω matching | Enables precise gain/offset calibration across dual channels in instrumentation amplifier front-ends |
| <5pC charge injection | Minimizes voltage glitch on sampled nodes - essential for 12-bit+ ADC/DAC interface stability |
| Single-supply +2.7V to +16V operation | Eliminates need for dual-rail supplies in portable medical monitors and handheld test gear |
| 100pA max off-leakage at +25°C | Preserves high-impedance node voltage in pH sensors, photodiode amplifiers, and electrophysiology circuits |
Applications
| Battery-Operated Audio Systems | Test Equipment Signal Routing |
|---|---|
Use Scenario: Selecting between microphone inputs or headphone outputs in portable voice recorders and Bluetooth headsets. IC Role / Device Role / Timing Role: Dual NC analog switch routing low-level audio signals while maintaining DC coupling and low THD. Use Value: 60Ω RON and <5pC charge injection prevent audible pop/click artifacts during channel switching. |
Use Scenario: Multiplexing DUT signals to oscilloscope or spectrum analyzer inputs in automated bench testers. IC Role / Device Role / Timing Role: Precision analog switch isolating measurement paths with minimal loading and crosstalk. Use Value: 85dB crosstalk and 72dB off-isolation ensure accurate multi-channel signal integrity under dynamic test conditions. |
| +3V/+5V Data Acquisition Front-Ends | Military Radio Signal Conditioning |
Use Scenario: Channel selection before anti-aliasing filters and ADC sampling in portable data loggers. IC Role / Device Role / Timing Role: Low-leakage, rail-to-rail analog switch interfacing sensors to SAR ADCs with 1MΩ+ input impedance. Use Value: ±5nA max off-leakage at +85°C prevents offset drift in thermocouple or strain-gauge measurements. |
Use Scenario: RF front-end gain control and antenna switching in manpack radios operating across –40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability analog switch managing IF signal paths with ESD-hardened I/O. Use Value: >2000V ESD rating and SO-8 package qualified for MIL-STD-883 Class B handling in field-deployed units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NC analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX324ESA+ | Same circuit function and pinout; extended –40°C to +85°C temp range vs. MAX324CSA+'s 0°C to +70°C | Suitable for industrial control and automotive cabin modules requiring wider thermal margin | Select MAX324ESA+ when operation beyond +70°C ambient is required; otherwise MAX324CSA+ offers cost-optimized commercial-grade performance |
| ADG1422BRMZ | 2-channel NC switch with 1.5Ω typical RON, but requires dual ±15V or single +30V supply; not pin-compatible | Targeted at high-precision lab equipment where ultra-low RON outweighs supply complexity | Choose ADG1422BRMZ only if sub-2Ω RON and <1pC charge injection justify redesigning supply and layout |
Compared with MAX324ESA+, the MAX324CSA+ trades extended temperature capability for lower unit cost and tighter inventory availability in commercial designs; compared with ADG1422BRMZ, it offers simpler single-supply operation and proven field reliability in battery-powered systems, albeit with higher RON.
Availability
MAX324CSA+ is available at Aetrix Electronics and suitable for battery-operated systems, test equipment signal routing, and +3V/+5V data acquisition front-ends requiring stable component supply across production lifecycles.
Supply support for MAX324CSA+ 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 MAX324CSA+ belongs to the MAX32x precision analog switch family, engineered for low-leakage, low-charge-injection signal routing in portable and high-reliability systems where single-supply simplicity and rail-to-rail analog fidelity are critical.
FAQ
What is the maximum supply voltage rating for MAX324CSA+?
The MAX324CSA+ has an absolute maximum positive supply voltage (V+) of +17V. Continuous operation is specified from +2.7V to +16V. Exceeding +17V risks permanent damage due to internal diode clamp stress, as defined in the Absolute Maximum Ratings table. For reliable long-term use, maintain V+ ≤ +16V with appropriate derating above +70°C ambient.
Does MAX324CSA+ support break-before-make switching?
No, the MAX324CSA+ does not implement break-before-make timing. That feature is exclusive to the MAX325 variant (one NO + one NC switch). The MAX324CSA+ contains two independent normally closed switches with simultaneous ON/OFF control - meaning both switches transition concurrently without guaranteed dead-time isolation between states.
What is the typical on-resistance flatness of MAX324CSA+ over its analog signal range?
The MAX324CSA+ guarantees on-resistance flatness (RFLAT(ON)) of ≤6Ω at +25°C and ≤8Ω over the full operating temperature range (0°C to +70°C). This specification reflects the peak-to-peak variation in RON as the analog voltage across the switch (VCOM) sweeps from 0V to V+, ensuring consistent gain and linearity in precision signal paths.
Can MAX324CSA+ operate with a 3.3V logic supply while switching 5V analog signals?
Yes - the MAX324CSA+ accepts rail-to-rail logic inputs, so driving IN1/IN2 from 0V to 3.3V is valid when V+ = 5V. However, TTL compatibility is not guaranteed below +5V supply; ensure logic high ≥ 2.4V and logic low ≤ 0.8V relative to GND. Analog signal range remains 0V to V+ (i.e., 0–5V), unaffected by logic voltage.
Is MAX324CSA+ RoHS compliant and lead-free?
Yes, the "+" suffix in MAX324CSA+ indicates RoHS-compliant, lead-free construction per EU Directive 2011/65/EU. The SO-8 package uses matte tin lead finish, and all homogeneous materials meet Annex II substance restrictions. Full compliance documentation, including Sb, Br, Hg, Cd, Pb, and phthalate test reports, is available upon request from Aetrix Electronics.
MAX324CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - 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
MAX324CSA+ FAQ
1.How can I place an order for MAX324CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX324CSA+ 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 MAX324CSA+ reliable?
The price and inventory of MAX324CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX324CSA+ is usually 5 days.
3.What payment methods are accepted for MAX324CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX324CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX324CSA+?
MAX324CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX324CSA+ 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 MAX324CSA+?
For technical support, including MAX324CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX324CSA+ requirements.
6.How does Aetrix verify that MAX324CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX324CSA+ 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 MAX324CSA+ meets industry standards.
7.What is the process for return or replacement of MAX324CSA+?
All MAX324CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX324CSA+, 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 MAX324CSA+ part is unused and in its original packaging.
Return procedure for MAX324CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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