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Analog Devices Inc./Maxim Integrated MAX4543CPA
- Part No.:
- MAX4543CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4543CPA.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,527
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Product details
Overview
MAX4543CPA 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, 5pC max charge injection, and guaranteed break-before-make switching - enabling reliable signal routing in battery-powered instrumentation and mixed-signal front-ends.
For engineers reviewing the MAX4543CPA datasheet, MAX4543CPA pinout, MAX4543CPA application, or MAX4543CPA equivalent, key selection criteria include its dual-channel SPST/SPDT configurability, low leakage (<10nA at +85°C), fast switching (tON = 35ns typ), TTL/CMOS logic compatibility, and Plastic DIP-8 package suitability for prototyping and industrial control interfaces.
Technical Context
The MAX4543CPA integrates two independent analog switches sharing a common logic interface: IN1 controls COM1–NO1/NC1, and IN2 controls COM2–NO2/NC2. Its break-before-make architecture prevents momentary shorting during state transitions - critical for multiplexed sensor inputs and DAC output selection.
It operates bidirectionally across the full analog signal range (GND to V+), supports rail-to-rail logic drive, and maintains stable RON flatness (6Ω max) and matching (2Ω max) over temperature and voltage - ensuring minimal gain error in precision measurement paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +12V single supply - enables direct interfacing with 3.3V, 5V, and 12V systems without level shifting. |
| On-Resistance (RON) | 60Ω max at +5V - ensures <0.1% gain error in 10kΩ impedance signal chains. |
| RON Matching | 2Ω max between channels - preserves amplitude balance in differential or dual-path signal routing. |
| Charge Injection | 5pC max - minimizes voltage glitch on high-impedance nodes (e.g., sample-and-hold capacitors). |
| Leakage Current | 10nA max at +85°C - maintains accuracy in µA-level current-sensing or high-Z sensor interfaces. |
| Switching Speed | tON = 35ns, tOFF = 25ns typ - supports >10MHz multiplexing in data acquisition systems. |
| ESD Protection | 2000V per Method 3015.7 - provides robust handling in manufacturing and field-replaceable modules. |
Pinout & Package
MAX4543CPA is housed in an 8-pin Plastic DIP package (0.300" wide), compatible with through-hole prototyping and industrial PCBs. Pin spacing follows standard 0.1" grid, supporting socket-based test fixtures and legacy board designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Analog Switch 1 - Normally Open terminal | Connects to COM1 only when IN1 = logic high; open-circuit otherwise - used for active-high signal enable paths. |
| 2 (COM1) | Analog Switch 1 - Common terminal | Primary analog I/O node for Channel 1; bidirectional - routes signal between NO1 and NC1 based on IN1 state. |
| 3 (IN2) | Digital Control Input 2 | CMOS/TTL-compatible logic input controlling COM2–NO2/NC2; accepts 0V to V+ swing. |
| 4 (GND) | Ground reference | System ground return for analog and digital sections; must be low-impedance to minimize crosstalk. |
| 5 (NC2) | Analog Switch 2 - Normally Closed terminal | Connects to COM2 only when IN2 = logic low; open-circuit when IN2 = high - enables default-path fail-safe routing. |
| 6 (COM2) | Analog Switch 2 - Common terminal | Primary analog I/O node for Channel 2; bidirectional - routes signal between NO2 and NC2 based on IN2 state. |
| 7 (IN1) | Digital Control Input 1 | CMOS/TTL-compatible logic input controlling COM1–NO1/NC1; accepts 0V to V+ swing. |
| 8 (V+) | Positive supply voltage | +2.7V to +12V analog/digital supply; powers internal switch matrix and logic interface - no separate analog/digital rails required. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 2ns min delay between channel disconnect and reconnect - eliminates signal shorting in SPDT-mode operation. |
| RON flatness | 6Ω max variation over full analog signal range (GND to V+) - ensures consistent attenuation across input voltage span. |
| Low power consumption | <5µW quiescent - extends battery life in portable medical devices and handheld test equipment. |
| TTL/CMOS logic compatibility | VINH = 2.4V min, VINL = 0.8V max at +5V supply - allows direct connection to microcontroller GPIO without buffers. |
| Pin compatibility | Direct replacement for MAX323/MAX324/MAX325 in DIP-8 footprint - simplifies legacy design upgrades. |
Applications
| Battery-Powered Instrumentation | Audio Signal Routing |
|---|---|
|
Use Scenario: Portable multimeter front-end selecting between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: Dual-channel analog switch isolating sensor inputs and scaling networks while maintaining low leakage and matched RON. Use Value: Enables single-supply operation with <10nA leakage at +85°C, preserving accuracy in µA-range current measurements. |
Use Scenario: Headphone amplifier output switching between stereo sources (e.g., Bluetooth and AUX). IC Role / Device Role / Timing Role: Bidirectional SPDT-capable switch routing line-level audio signals with low THD and minimal crosstalk (-90dB). Use Value: 5pC max charge injection prevents audible pop/click during source switching in consumer audio gear. |
| Industrial Sensor Multiplexing | Medical Ultrasound Beamforming |
|
Use Scenario: PLC analog input module scanning 8 thermocouple or RTD channels into a single ADC. IC Role / Device Role / Timing Role: Precision dual SPST switch providing matched channel resistance and low off-isolation (-76dB) to prevent cross-channel interference. Use Value: 2Ω max RON matching ensures consistent gain calibration across all channels without per-channel trimming. |
Use Scenario: Time-gain compensation (TGC) path in portable ultrasound transceivers selecting between multiple gain stages. IC Role / Device Role / Timing Role: Fast-switching (35ns tON) analog switch enabling dynamic echo-depth gating with minimal signal distortion. Use Value: 60Ω max RON and 6Ω flatness preserve pulse fidelity in 1–15MHz RF receive paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4543CSA | Same electrical specs; SO-8 package (surface-mount, 150°C max operating temp vs. 70°C for CPA) | Preferred for automated SMT production and higher-temperature industrial environments | Select MAX4543CSA for volume PCB assembly; MAX4543CPA remains optimal for breadboarding, repair, or legacy through-hole systems. |
| ADG1419BRUZ | Single SPDT, 4.7Ω RON, ±15V dual supply only - no single +5V operation or break-before-make guarantee | Requires dual-rail supply and external logic translation; unsuitable for battery-powered +5V systems | Choose ADG1419BRUZ only if ultra-low RON and bipolar signal handling are mandatory - not a functional substitute for MAX4543CPA's single-supply SPST/SPDT flexibility. |
Compared with MAX4543CSA, MAX4543CPA offers identical switching performance but trades surface-mount scalability for through-hole serviceability and prototyping ease; versus ADG1419BRUZ, it provides native single-supply operation and guaranteed break-before-make - critical for safe signal routing in cost-sensitive embedded systems.
Availability
MAX4543CPA is available at Aetrix Electronics and suitable for battery-operated instrumentation, industrial sensor multiplexing, audio signal routing, and medical ultrasound beamforming requiring stable component supply across extended product lifecycles.
Supply support for MAX4543CPA 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 and mixed-signal ICs for demanding industrial, medical, and communications applications - emphasizing low power, high reliability, and system-level integration.
The MAX4541–MAX4544 family targets low-voltage, single-supply analog signal routing where leakage, matching, and switching integrity are critical - especially in portable test equipment and sensor interface subsystems.
FAQ
What is the maximum supply voltage rating for MAX4543CPA?
The MAX4543CPA has an absolute maximum supply voltage of +13V, with recommended operating range from +2.7V to +12V. Exceeding +13V risks permanent damage per Absolute Maximum Ratings. At +12V operation, RON drops to ~30Ω typ, improving signal fidelity in high-voltage industrial interfaces - a key advantage confirmed in the Typical Operating Characteristics curves on page 5 of the datasheet.
Does MAX4543CPA support rail-to-rail analog signal switching?
Yes, MAX4543CPA supports analog signals from GND to V+ without degradation in on-resistance or increased distortion. The datasheet specifies "Analog Signal Range: 0 to V+" and shows RON flatness of ≤6Ω across this full range - verified in Figure 2 (RON vs. COM Voltage). This enables direct connection to op-amp outputs and ADC inputs without clamping or level-shifting circuitry.
Is MAX4543CPA pin-compatible with older Maxim analog switches?
Yes, MAX4543CPA is pin-compatible with MAX323, MAX324, and MAX325 in the 8-pin DIP package. Pin functions match identically: V+, IN1, COM2, NC2, GND, IN2, COM1, NC1. This allows drop-in replacement in legacy designs - confirmed in the "Pin Compatible with MAX323/MAX324/MAX325" feature bullet on page 2 of the datasheet.
What is the guaranteed break-before-make time for MAX4543CPA?
MAX4543CPA guarantees a minimum break-before-make time of 2ns (tD), measured under RL = 300Ω and CL = 35pF conditions at +25°C. This prevents momentary shorting between NO and NC paths during logic transitions - essential for safe SPDT-mode operation in power-sensitive circuits. The specification appears in the Electrical Characteristics table on page 3.
Can MAX4543CPA operate from a +3.3V supply?
Yes, MAX4543CPA is fully specified for +3.3V operation (V+ = +3.0V to +3.6V). At +3.3V, typical RON is 125Ω, tON is 80ns, and leakage remains <10nA at +85°C - all validated in the +3.3V Electrical Characteristics table on page 4. Logic inputs remain TTL/CMOS-compatible with VINH = 2.4V and VINL = 0.8V thresholds.
MAX4543CPA 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX4543CPA FAQ
1.How can I place an order for MAX4543CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4543CPA 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 MAX4543CPA reliable?
The price and inventory of MAX4543CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4543CPA is usually 5 days.
3.What payment methods are accepted for MAX4543CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4543CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4543CPA?
MAX4543CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4543CPA 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 MAX4543CPA?
For technical support, including MAX4543CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4543CPA requirements.
6.How does Aetrix verify that MAX4543CPA is sourced from the original manufacturer or authorized distributors?
All MAX4543CPA 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 MAX4543CPA meets industry standards.
7.What is the process for return or replacement of MAX4543CPA?
All MAX4543CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4543CPA, 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 MAX4543CPA part is unused and in its original packaging.
Return procedure for MAX4543CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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