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Analog Devices Inc./Maxim Integrated MAX323ESA+
- Part No.:
- MAX323ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX323ESA+.pdf
- Description:
- IC SWITCH SPST-NOX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:961
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Product details
Overview
MAX323ESA+ from Analog Devices is a precision dual SPST analog switch with two normally open (NO) channels, designed for single-supply operation from +2.7V to +16V. It delivers 60Ω max on-resistance, <2Ω channel-to-channel RON matching, and 5pC max charge injection at +25°C - enabling high-fidelity signal routing in battery-powered instrumentation and low-voltage data acquisition systems.
For engineers reviewing the MAX323ESA+ datasheet, MAX323ESA+ pinout, MAX323ESA+ application, or MAX323ESA+ equivalent, key selection criteria include guaranteed break-before-make timing (not applicable - MAX323 is NO-only), -40°C to +85°C extended temperature operation, SO-8 package compatibility, and leakage performance under 2.5nA at +85°C.
Technical Context
The MAX323ESA+ implements CMOS transmission-gate architecture with rail-to-rail analog signal handling (0V to V+) and TTL/CMOS-compatible logic inputs. Its dual NO configuration enables independent control of two analog paths without internal interconnection or break-before-make sequencing.
Switching dynamics are characterized by tON ≤ 150ns and tOFF ≤ 100ns at +5V supply, while RON flatness remains ≤6Ω over the full analog range - critical for minimizing harmonic distortion in audio and precision measurement circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V - supports direct integration with 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +25°C, +5V - ensures minimal voltage drop and power loss in signal path. |
| RON Matching | <2Ω max between channels - preserves amplitude balance in differential or dual-path applications. |
| Charge Injection | 5pC max - limits transient error in sample-and-hold and multiplexed ADC front-ends. |
| Leakage Current | <2.5nA at +85°C - maintains signal integrity in high-impedance sensor interfaces. |
| Switching Speed | tON ≤ 150ns, tOFF ≤ 100ns - enables use in >5MHz multiplexing and fast-settling data acquisition. |
| ESD Rating | >2000V per Method 3015.7 - provides robust handling during board assembly and field operation. |
Pinout & Package
MAX323ESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard 1.27mm pitch and 5.0mm × 4.0mm body dimensions per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Normally open analog terminal of Channel 1 - connects to COM1 only when IN1 = logic high. |
| 2 | COM1 | Common analog node for Channel 1 - bidirectional I/O capable of sourcing/sinking up to 30mA continuous. |
| 3 | IN2 | Logic input controlling Channel 2 - TTL/CMOS compatible with VIL ≤ 0.8V and VIH ≥ 2.4V at +5V supply. |
| 4 | GND | Analog and digital ground reference - must be low-impedance and tied directly to system ground plane. |
| 5 | NO2 | Normally open analog terminal of Channel 2 - isolated from COM2 until IN2 = logic high. |
| 6 | COM2 | Common analog node for Channel 2 - electrically independent from COM1; supports separate signal domains. |
| 7 | IN1 | Logic input controlling Channel 1 - independent control allows asynchronous switching of two analog paths. |
| 8 | V+ | Positive supply rail - powers internal logic and switch transistors; absolute max rating is +17V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual normally open (NO) topology | Enables independent, non-interacting signal routing - no risk of short-through during transition. |
| Single-supply operation (+2.7V to +16V) | Eliminates need for dual-rail supplies in portable and industrial equipment, reducing BOM count and layout complexity. |
| Low 5μW power consumption | Extends battery life in handheld test gear and remote sensors without compromising switching performance. |
| 6Ω max RON flatness | Maintains consistent gain and linearity across full analog input range - essential for precision DAC/ADC interfacing. |
| 100pA max off-leakage at +25°C | Preserves accuracy in high-impedance medical sensor front-ends and electrometer-grade measurement circuits. |
Applications
| Battery-Operated Test Equipment | Audio Signal Routing |
|---|---|
|
Use Scenario: Portable multimeter front-end multiplexing of voltage, current, and resistance ranges. IC Role / Device Role / Timing Role: Dual SPST analog switch isolating measurement paths under microcontroller control. Use Value: 60Ω max RON and <2Ω matching ensure consistent scaling across ranges; 5pC charge injection prevents offset drift in auto-zeroed amplifiers. |
Use Scenario: Channel selection in professional audio mixers with unbalanced line-level inputs. IC Role / Device Role / Timing Role: Low-distortion analog path selector routing signals to gain stages and A/D converters. Use Value: 6Ω RON flatness minimizes THD across 20Hz–20kHz; rail-to-rail analog range supports ±10V peak signals without clipping. |
| +3V/+5V Data Acquisition Systems | Military Communications Interface |
|
Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a 16-bit SAR ADC. IC Role / Device Role / Timing Role: Precision analog switch providing low-leakage, low-charge-injection signal conditioning before digitization. Use Value: <2.5nA leakage at +85°C prevents DC error accumulation; 150ns tON supports >5MSPS sampling rates with minimal aperture jitter. |
Use Scenario: Antenna switching and RF front-end protection in manpack radios operating across -40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability analog path isolation for T/R switching and signal monitoring loops. Use Value: 2000V ESD rating withstands harsh field environments; extended temperature grade ensures stable RON and leakage over military thermal cycles. |
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 |
|---|---|---|---|
| MAX323CSA+ | Same electrical specs but rated for 0°C to +70°C commercial temperature range. | Not qualified for extended industrial or automotive ambient conditions. | Select MAX323CSA+ only for cost-sensitive consumer or lab-grade equipment with controlled thermal environments. |
| ADG1419BRMZ | Higher RON (1.3Ω typ), wider supply (±15V or +12V single), but higher 12nA leakage at +85°C. | Better for high-voltage industrial PLC I/O modules; less suitable for ultra-low-leakage sensor front-ends. | Choose ADG1419BRMZ when driving higher-voltage analog buses; retain MAX323ESA+ for sub-2.5nA leakage-critical designs. |
Compared with MAX323CSA+, MAX323ESA+ adds guaranteed -40°C startup and lower high-temp leakage; compared with ADG1419BRMZ, it trades higher voltage capability for superior leakage and lower cost in +5V systems.
Availability
MAX323ESA+ is available at Aetrix Electronics and suitable for battery-operated instrumentation, precision data acquisition, and military communications systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX323ESA+ 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 MAX323ESA+ belongs to the MAX32x precision analog switch family, engineered specifically for low-leakage, low-charge-injection signal routing in portable and high-reliability measurement systems.
FAQ
What is the maximum supply voltage rating for MAX323ESA+?
The absolute maximum supply voltage for MAX323ESA+ is +17V referenced to GND. Operation beyond this limit risks permanent damage. The device is specified for reliable operation from +2.7V to +16V, making it compatible with common 3.3V, 5V, and 12V rails. Derating guidelines apply above +70°C ambient: narrow SO package dissipates 471mW at +70°C, decreasing by 5.88mW/°C thereafter.
Does MAX323ESA+ support break-before-make switching?
No, MAX323ESA+ does not implement break-before-make functionality. It is a dual normally open (NO) switch - both channels are open by default and close independently upon logic high assertion at IN1 or IN2. Break-before-make behavior is exclusive to the MAX325 variant, which integrates one NO and one NC switch per package. Using MAX323ESA+ in applications requiring guaranteed isolation during state transitions requires external timing control.
What is the typical on-resistance flatness of MAX323ESA+ over its analog signal range?
MAX323ESA+ exhibits ≤6Ω maximum RON flatness over its full analog signal range (0V to V+) at +25°C and +5V supply. This specification means the difference between maximum and minimum on-resistance values measured across the entire voltage span is bounded at 6Ω - ensuring minimal gain variation and harmonic distortion in audio, video, and precision measurement paths where signal amplitude varies widely.
Can MAX323ESA+ operate with a 3.3V supply while maintaining TTL logic compatibility?
MAX323ESA+ is TTL-compatible only when powered from a +5V supply. At +3.3V, its logic thresholds (VIL ≤ 0.8V, VIH ≥ 2.4V) remain valid, but input drive must be rail-to-rail: IN1 and IN2 should be driven low to 0V and high to +3.3V. Driving with standard 5V-tolerant TTL outputs may cause excessive current or undefined states. For guaranteed interoperability at 3.3V, use CMOS-level logic sources or level translators.
How does the leakage current of MAX323ESA+ perform at elevated temperatures?
MAX323ESA+ guarantees total off-leakage current ≤5nA across its full -40°C to +85°C operating range, with typical values below 0.1nA at +25°C. At +85°C, leakage remains ≤2.5nA for COM-off and ≤5nA for NO/NC-off conditions - verified per datasheet testing methodology. This performance enables reliable use in high-impedance sensor nodes, electrometers, and medical instrumentation where leakage-induced offset errors must stay below 1μV in 1GΩ source impedances.
MAX323ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX323ESA+ FAQ
1.How can I place an order for MAX323ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX323ESA+ 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 MAX323ESA+ reliable?
The price and inventory of MAX323ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX323ESA+ is usually 5 days.
3.What payment methods are accepted for MAX323ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX323ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX323ESA+?
MAX323ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX323ESA+ 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 MAX323ESA+?
For technical support, including MAX323ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX323ESA+ requirements.
6.How does Aetrix verify that MAX323ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX323ESA+ 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 MAX323ESA+ meets industry standards.
7.What is the process for return or replacement of MAX323ESA+?
All MAX323ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX323ESA+, 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 MAX323ESA+ part is unused and in its original packaging.
Return procedure for MAX323ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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