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Analog Devices Inc./Maxim Integrated MAX4543CSA
- Part No.:
- MAX4543CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4543CSA.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
The MAX4543CSA from Maxim Integrated 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 +12V. It delivers 60Ω max on-resistance, 2Ω max RON matching between channels, and guaranteed break-before-make switching - enabling reliable signal routing in mixed-voltage data acquisition systems.
For engineers reviewing the MAX4543CSA datasheet, MAX4543CSA pinout, MAX4543CSA application, or MAX4543CSA equivalent, key selection criteria include its 5pC max charge injection, 100pA max leakage at +25°C, TTL/CMOS logic compatibility, SOT23-8 package footprint, and verified performance in battery-powered instrumentation and audio multiplexing.
Technical Context
The MAX4543CSA implements a dual-channel, single-pole configuration where Channel 1 is NO and Channel 2 is NC - allowing it to function as a compact SPDT switch without external components. Its CMOS transmission-gate architecture supports bidirectional analog signal flow across the full V+ to GND range with minimal distortion.
Break-before-make timing is guaranteed at 2ns min / 10ns max (tD) under +5V supply and 35pF load conditions, preventing momentary short-circuits during channel transitions. Logic inputs accept rail-to-rail voltage levels and remain compatible with TTL thresholds when operated at +5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +12V single supply - enables direct interface with 3.3V, 5V, and 12V system rails without level shifting. |
| RON (max) | 60Ω at +5V - ensures low insertion loss and minimal gain error in precision sensor front-ends. |
| RON Matching | 2Ω max between channels - critical for matched-path applications like differential signal switching or dual ADC sampling. |
| Charge Injection | 5pC max - limits voltage glitch on high-impedance nodes (e.g., sample-and-hold capacitors), preserving DC accuracy. |
| tON/tOFF | 35ns / 25ns typical at +5V - supports >10MHz analog multiplexing in real-time control loops. |
| Leakage Current | 100pA max at +25°C - maintains signal integrity in nanoamp-level current measurement circuits. |
| ESD Protection | 2000V per Method 3015.7 - provides robust handling margin during board assembly and field service. |
Pinout & Package
MAX4543CSA is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, compatible with automated PCB assembly and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM1 | Analog common terminal, Channel 1 | Bidirectional path for signal routing; connects to NO1 when IN1 = logic high (NO configuration). |
| 2 - IN1 | Digital control input, Channel 1 | TTL/CMOS-compatible; high = connect COM1 to NO1, low = disconnect (open circuit). |
| 3 - GND | Ground reference | Return path for supply current and logic threshold reference; must be low-impedance for noise immunity. |
| 4 - NC2 | Not internally connected (Channel 2) | No internal bond wire; electrically isolated - may be left floating or tied to GND for mechanical stability. |
| 5 - COM2 | Analog common terminal, Channel 2 | Bidirectional path; connects to NC2 when IN2 = logic low (NC configuration), open when IN2 = high. |
| 6 - IN2 | Digital control input, Channel 2 | Inverted logic sense vs. IN1: low enables COM2–NC2 path; high disables both paths (break-before-make active). |
| 7 - NO1 | Normally open terminal, Channel 1 | Only conducts when IN1 = high; used for active-high signal gating in power sequencing or enable paths. |
| 8 - V+ | Positive supply input | Accepts +2.7V to +12V; powers internal logic and analog switches; must be bypassed with ≥0.1µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no overlap between NO1 and NC2 conduction states - eliminates signal shorting in SPDT emulation mode. |
| 6Ω max RON flatness | Maintains consistent on-resistance across 0V to V+ analog swing - minimizes harmonic distortion in audio and video signals. |
| Low 5µW quiescent power | Draws ≤1µA supply current at +5V - extends battery life in portable medical monitors and handheld test gear. |
| TTL/CMOS logic compatibility | Operates with standard 0.8V/2.4V thresholds at +5V - eliminates need for external logic translators in microcontroller-driven systems. |
| Pin compatibility with MAX323/324/325 | Enables drop-in replacement in legacy designs using those older analog switches - reduces redesign effort and qualification time. |
Applications
| Portable Data Loggers | Medical Ultrasound Beamforming |
|---|---|
|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs into a shared 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Dual-channel analog switch routing low-level sensor outputs while maintaining channel-to-channel gain/offset matching. Use Value: 2Ω RON matching and 100pA leakage preserve µV-level resolution across temperature ranges up to +70°C. |
Use Scenario: Selecting between multiple transducer elements in phased-array ultrasound receivers. IC Role / Device Role / Timing Role: High-speed SPDT emulation for echo signal path switching with sub-10ns break-before-make timing. Use Value: 35ns tON and 5pC charge injection prevent image artifacts and maintain time-of-flight accuracy in real-time beam steering. |
| Industrial PLC Analog I/O Modules | Automotive Infotainment Audio Routing |
|
Use Scenario: Isolating field wiring from sensitive ADC/DAC circuitry in modular I/O cards with hot-swap capability. IC Role / Device Role / Timing Role: Signal gate protecting downstream converters from overvoltage transients and ESD events. Use Value: 2000V HBM ESD rating and ±13V absolute maximum analog input range ensure reliability in harsh factory environments. |
Use Scenario: Switching microphone inputs and speaker outputs between Bluetooth, USB-Audio, and FM tuner sources. IC Role / Device Role / Timing Role: Low-distortion analog multiplexer handling line-level audio (±1V) with minimal crosstalk. Use Value: -90dB crosstalk and 6Ω RON flatness suppress audible switching noise and preserve stereo imaging fidelity. |
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 |
|---|---|---|---|
| MAX4543EKA-T | SOT23-8 package with AAAG top mark; rated for -40°C to +85°C industrial temperature range vs. MAX4543CSA's 0°C to +70°C commercial grade. | Required for extended-temperature deployments such as outdoor metering or under-hood automotive modules. | Select MAX4543EKA-T when operating ambient exceeds +70°C or storage below 0°C is expected. |
| MAX4542CSA | Dual NC configuration (vs. MAX4543CSA's NO/NC); identical pinout, package, and electrical specs except logic polarity and channel behavior. | Suitable for fail-safe signal blocking (e.g., disabling sensor inputs during fault conditions) rather than SPDT emulation. | Choose MAX4542CSA only if both channels must default closed; MAX4543CSA remains optimal for true SPDT functionality. |
Compared with MAX4543EKA-T, the MAX4543CSA offers lower cost and faster lead times for commercial-grade applications, while MAX4542CSA provides complementary logic behavior but cannot replicate the break-before-make SPDT operation essential for signal integrity in multiplexed systems.
Availability
MAX4543CSA is available at Aetrix Electronics and suitable for portable instrumentation, medical ultrasound subsystems, industrial PLC analog I/O, and automotive infotainment requiring stable component supply across production lifecycles.
Supply support for MAX4543CSA 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX4541–MAX4544 family was engineered to replace electromechanical relays and older analog switches in low-voltage, single-supply systems where low leakage, fast switching, and rail-to-rail signal handling are critical.
FAQ
What is the maximum analog signal voltage range supported by the MAX4543CSA?
The MAX4543CSA supports analog signals from GND to V+, meaning its full-range operation spans 0V to the applied positive supply voltage - up to +12V. This rail-to-rail capability allows direct interfacing with sensors, DACs, and ADCs without external level-shifting circuitry, and is confirmed in the Electrical Characteristics table under "Analog Signal Range" with VCOM_, VNO_, VNC_ specified as 0 to V+.
Does the MAX4543CSA require dual supplies or negative voltage support?
No, the MAX4543CSA operates exclusively from a single positive supply (V+) ranging from +2.7V to +12V and does not require a negative rail or split supply. Its internal architecture uses CMOS transmission gates referenced to GND, and all absolute maximum ratings - including analog input voltage limits - are defined relative to GND, confirming true single-supply operation.
Is the MAX4543CSA pin-compatible with other devices in the MAX454x family?
Yes, the MAX4543CSA shares identical pinout and package (8-pin SO) with MAX4541CSA and MAX4542CSA, enabling direct substitution in layouts designed for those variants. However, functional behavior differs: MAX4541CSA is dual-NO, MAX4542CSA is dual-NC, while MAX4543CSA combines one NO and one NC channel with guaranteed break-before-make timing - a distinction confirmed in the Pin Configurations and Truth Tables section.
What is the guaranteed break-before-make timing specification for the MAX4543CSA?
The MAX4543CSA guarantees a break-before-make interval (tD) of 2ns minimum to 10ns maximum when tested at +5V supply, RL = 300Ω, and CL = 35pF, as documented in the Electrical Characteristics table under "Break-Before-Make Time Delay". This parameter applies only to the MAX4543 and MAX4544 variants - not to MAX4541 or MAX4542 - and ensures safe channel transition without signal shorting.
Can the MAX4543CSA be used in battery-powered equipment?
Yes, the MAX4543CSA is explicitly optimized for battery-powered equipment, consuming less than 5µW typical quiescent power (I+ ≤ ±1µA at +5V). Its low 100pA max leakage current at +25°C and wide +2.7V minimum supply enable operation down to near-dead battery voltages in portable medical devices, handheld testers, and wireless sensor nodes - a key design goal stated in the General Description.
MAX4543CSA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 100ns, 75ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4543CSA FAQ
1.How can I place an order for MAX4543CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4543CSA 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 MAX4543CSA reliable?
The price and inventory of MAX4543CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4543CSA is usually 5 days.
3.What payment methods are accepted for MAX4543CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4543CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4543CSA?
MAX4543CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4543CSA 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 MAX4543CSA?
For technical support, including MAX4543CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4543CSA requirements.
6.How does Aetrix verify that MAX4543CSA is sourced from the original manufacturer or authorized distributors?
All MAX4543CSA 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 MAX4543CSA meets industry standards.
7.What is the process for return or replacement of MAX4543CSA?
All MAX4543CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4543CSA, 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 MAX4543CSA part is unused and in its original packaging.
Return procedure for MAX4543CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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