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Analog Devices Inc./Maxim Integrated MAX323CSA
- Part No.:
- MAX323CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX323CSA.pdf
- Description:
- IC SWITCH SPST-NOX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,685
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Product details
Overview
MAX323CSA from Analog Devices is a precision dual normally open (NO) single-pole single-throw (SPST) analog switch IC operating from +2.7V to +16V single supply, delivering 60Ω max on-resistance, <2Ω channel-to-channel RON matching, and 150ns max turn-on time. It enables low-leakage signal routing in battery-powered audio/video multiplexing and precision data acquisition systems.
For engineers reviewing the MAX323CSA datasheet, MAX323CSA pinout, MAX323CSA application, or MAX323CSA equivalent, key selection criteria include guaranteed RON flatness (<6Ω), 5pC max charge injection, 100pA max off-leakage at +25°C, and SO-8 package compatibility with space-constrained industrial and portable designs.
Technical Context
The MAX323CSA implements two independent SPST switches with TTL/CMOS-compatible logic inputs and bidirectional analog signal paths spanning GND to V+. Its internal architecture ensures break-before-make timing is not required-unlike the MAX325-since both switches are normally open and operate independently.
It guarantees performance across 0°C to +70°C ambient, supports rail-to-rail analog signals up to V+, and maintains low power consumption (<5μW) via sub-1μA supply current. Charge injection (≤5pC) and off-isolation (72dB at 1MHz) are specified and tested under defined load conditions (CL = 1nF, RL = 300Ω).
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, 5V supply - Ensures minimal signal attenuation and voltage drop in precision sensor or DAC/ADC signal paths. |
| RON Matching | <2Ω between channels at +25°C - Critical for matched gain/attenuation in differential or dual-path instrumentation circuits. |
| Charge Injection | ≤5pC - Limits voltage glitch on sample-and-hold capacitors, preserving ADC accuracy in data acquisition front-ends. |
| Turn-On/Off Time | tON ≤150ns, tOFF ≤100ns at +25°C - Supports high-speed multiplexing in test equipment and real-time control loops. |
| Off-Leakage Current | ≤100pA at +25°C - Maintains integrity of high-impedance nodes in battery-operated medical or sensor interfaces. |
| ESD Rating | >2000V per Method 3015.7 - Provides robust handling margin during PCB assembly and field service. |
Pinout & Package
MAX323CSA is housed in an 8-pin SO (Small Outline) package, 150-mil body width, RoHS-compliant, with standard gull-wing lead form and 1.27mm pitch. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Normally open analog terminal of Switch 1 - Connects to COM1 only when IN1 = logic high; bidirectional signal path. |
| 2 | COM1 | Common analog terminal of Switch 1 - Serves as input/output node shared between NO1 and internal switch element. |
| 3 | IN2 | Logic input for Switch 2 - TTL/CMOS-compatible; drives internal gate to close NO2–COM2 path when high. |
| 4 | GND | Analog and digital ground reference - Must be low-impedance; return path for leakage and switching currents. |
| 5 | NO2 | Normally open analog terminal of Switch 2 - Isolates from COM2 until IN2 is asserted; matches NO1 electrically. |
| 6 | COM2 | Common analog terminal of Switch 2 - Bidirectional node; voltage range limited to GND–V+. |
| 7 | IN1 | Logic input for Switch 1 - Active-high control; compatible with 3.3V/5V logic families when V+ ≥ 3V. |
| 8 | V+ | Positive supply rail - Powers internal switch core and level translators; absolute max 17V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual normally open (NO) topology | Ensures default-open signal path - prevents unintended analog coupling during power-up or logic reset. |
| Single-supply operation (+2.7V to +16V) | Eliminates need for dual rails in portable or mixed-voltage systems; simplifies power architecture. |
| 6Ω max RON flatness over signal range | Maintains consistent gain/attenuation across full 0V–V+ analog swing - essential for linearity-critical video/audio routing. |
| Guaranteed 5pC max charge injection | Reduces hold-step error in sample-and-hold amplifiers, enabling 12-bit+ effective resolution without external correction. |
| TTL/CMOS logic compatibility at 5V | Direct interface with microcontroller GPIO or FPGA outputs without external level shifters or pull-ups. |
Applications
| Battery-Powered Audio Mux | Medical Sensor Signal Routing |
|---|---|
Use Scenario: Multiplexing microphone inputs or headphone outputs in portable ultrasound or hearing aids. IC Role / Device Role / Timing Role: Dual SPST analog switch isolating signal paths while preserving bandwidth and SNR. Use Value: 150ns switching and <100pA leakage prevent audible pop/click and preserve weak bio-signal integrity during channel changes. |
Use Scenario: Routing ECG/EEG electrode signals to a shared ADC front-end in wearable monitors. IC Role / Device Role / Timing Role: Precision analog switch enabling low-noise, low-distortion signal selection before amplification. Use Value: 60Ω RON and <2Ω matching minimize gain mismatch between differential channels, improving common-mode rejection. |
| Industrial Data Acquisition | Test Equipment Signal Conditioning |
Use Scenario: Selecting between multiple sensor bridges (strain gauge, RTD) feeding a precision ΣΔ ADC. IC Role / Device Role / Timing Role: Low-charge-injection switch ensuring accurate sampling without hold capacitor corruption. Use Value: 5pC max charge injection limits voltage error to <50μV on 100nF hold capacitors - sufficient for 16-bit measurement fidelity. |
Use Scenario: Configuring signal paths in automated test equipment (ATE) for calibration and stimulus routing. IC Role / Device Role / Timing Role: High-speed, low-RON analog switch enabling rapid reconfiguration of DUT interface networks. Use Value: 100ns tOFF and 72dB off-isolation suppress crosstalk between adjacent test channels at 1MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRMZ | Single-supply capable (±5V dual or +12V single), 0.6Ω typical RON, but higher 12nA leakage at +85°C. | Better RON for low-voltage precision, but less suitable for ultra-low-leakage battery systems. | Select ADG1419BRMZ when RON <1Ω is critical and leakage tolerance >1nA is acceptable. |
| TS5A23157DCUR | Lower supply range (1.65V–5.5V), 0.9Ω RON, 30pC charge injection, SC70-6 package. | Optimized for 3.3V mobile I/O, not rated for 12V operation or high-temp industrial use. | Choose TS5A23157DCUR for compact, low-voltage consumer electronics where 12V operation is unnecessary. |
Compared with ADG1419BRMZ and TS5A23157DCUR, the MAX323CSA uniquely balances wide supply range (2.7V–16V), ultra-low leakage (<100pA), and moderate RON (60Ω) - making it optimal for battery-powered industrial and medical instruments requiring long-term signal integrity without rail constraints.
Availability
MAX323CSA is available at Aetrix Electronics and suitable for battery-operated systems, precision data acquisition, and medical sensor interfaces requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX323CSA 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 MAX323CSA belongs to the MAX32x precision analog switch family, designed specifically for low-leakage, low-distortion signal routing in single-supply portable and instrumentation applications.
FAQ
What is the maximum supply voltage rating for the MAX323CSA?
The MAX323CSA has an absolute maximum supply voltage (V+) of +17V, though its functional operating range is specified from +2.7V to +16V. Exceeding +17V risks permanent damage. The device delivers optimal RON and switching performance at 5V and 12V supplies, with derating applied above +70°C ambient per the 471mW SO-package power dissipation limit.
Does the MAX323CSA support rail-to-rail analog signal switching?
Yes, the MAX323CSA supports analog signals from GND to V+ across both switches. Its bidirectional architecture allows any combination of NO, COM, or NC pins to serve as input or output, provided voltages remain within the absolute maximum ratings (–0.3V to V+ + 0.3V). At V+ = 5V, this yields a full 0V–5V analog range with <6Ω RON flatness.
Is the MAX323CSA pin-compatible with other variants in the MAX323/MAX324/MAX325 family?
Yes - all MAX323, MAX324, and MAX325 variants share identical 8-pin SO, DIP, and µMAX footprints and pinouts. The MAX323CSA (dual NO), MAX324CSA (dual NC), and MAX325CSA (one NO + one NC) can be substituted on the same PCB layout, though logic polarity and default state differ. No redesign is needed for mechanical fit or soldering.
What is the guaranteed charge injection specification for the MAX323CSA, and why does it matter?
The MAX323CSA guarantees ≤5pC maximum charge injection, measured with CL = 1.0nF, VGEN = 0V, and RGEN = 0Ω. This low value minimizes voltage glitches on sample-and-hold capacitors, directly preserving DC accuracy and effective resolution in precision ADC applications - especially critical in battery-powered data loggers where calibration intervals are infrequent.
How does the MAX323CSA perform at elevated temperatures, such as +85°C?
At +85°C, the MAX323CSA maintains RON ≤75Ω, RON matching ≤4Ω, and off-leakage ≤5nA - all fully specified and production-tested. Its SO-8 package provides 471mW continuous power dissipation at +70°C, derating linearly above that point. These characteristics make the MAX323CSA suitable for extended-temperature industrial environments when paired with appropriate thermal management.
MAX323CSA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- 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
MAX323CSA FAQ
1.How can I place an order for MAX323CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX323CSA 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 MAX323CSA reliable?
The price and inventory of MAX323CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX323CSA is usually 5 days.
3.What payment methods are accepted for MAX323CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX323CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX323CSA?
MAX323CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX323CSA 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 MAX323CSA?
For technical support, including MAX323CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX323CSA requirements.
6.How does Aetrix verify that MAX323CSA is sourced from the original manufacturer or authorized distributors?
All MAX323CSA 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 MAX323CSA meets industry standards.
7.What is the process for return or replacement of MAX323CSA?
All MAX323CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX323CSA, 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 MAX323CSA part is unused and in its original packaging.
Return procedure for MAX323CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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