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Analog Devices Inc./Maxim Integrated MAX4542CSA+
- Part No.:
- MAX4542CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4542CSA+.pdf
- Description:
- IC SWITCH SPST-NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,667
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Product details
Overview
The MAX4542CSA+ from Maxim Integrated is a precision dual single-pole/single-throw (SPST) analog switch with normally closed (NC) configuration, operating from a single +2.7V to +12V supply. It delivers 60Ω max on-resistance, 2Ω max RON matching between channels, and 5pC max charge injection-enabling high-fidelity signal routing in battery-powered audio/video switching and portable test equipment.
For engineers reviewing the MAX4542CSA+ datasheet, MAX4542CSA+ pinout, MAX4542CSA+ application, or MAX4542CSA+ equivalent, key selection criteria include guaranteed break-before-make timing (not applicable), NC-only channel behavior, SOT23-8 package thermal performance, and leakage stability up to +85°C.
Technical Context
This device implements two independent NC SPST switches controlled by TTL/CMOS-compatible logic inputs (IN1, IN2), with bidirectional analog signal paths (COM1/NO1/NC1 and COM2/NO2/NC2). Each switch exhibits rail-to-rail analog voltage handling (GND to V+) and maintains low RON flatness (6Ω max) across its full signal range.
Designed for single-supply operation, the MAX4542CSA+ integrates internal ESD protection (>2000V per Method 3015.7) and achieves ultra-low power consumption (<5µW at +5V). Its fast switching (tON = 35ns typ, tOFF = 25ns typ) and low off-isolation (-76dB) support high-speed multiplexing in instrumentation and communications systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V single supply - enables direct integration into 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal signal attenuation and gain error in precision sensor or DAC/ADC interface paths. |
| RON Matching | 2Ω max between channels - critical for matched gain/phase response in differential or dual-channel signal conditioning. |
| Charge Injection | 5pC max - reduces glitch-induced settling errors in sample-and-hold and switched-capacitor circuits. |
| Leakage Current | 10nA max at +85°C - preserves accuracy in high-impedance sensor front-ends and battery-monitoring applications. |
| Switching Speed | tON = 35ns, tOFF = 25ns typ at +5V - supports >10MHz multiplexing in automated test equipment and real-time signal routing. |
| ESD Protection | >2000V per Method 3015.7 - provides robust handling during board assembly and field service without external protection. |
Pinout & Package
SOT23-8 package (3.0mm × 3.0mm × 1.45mm body, 0.65mm pitch), thermally enhanced with exposed pad connected to V+ per manufacturer recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COM1) | Analog Common 1 | Bidirectional signal path terminal for first NC switch; connects to NC1 when IN1 = LOW. |
| 2 (IN1) | Digital Control Input 1 | TTL/CMOS-compatible logic input controlling COM1–NC1 path; active-low for NC function. |
| 3 (GND) | Ground Reference | Return path for supply current and logic reference; must be low-impedance for noise immunity. |
| 4 (NC2) | Analog Normally Closed 2 | Normally closed terminal of second switch; connects to COM2 when IN2 = LOW. |
| 5 (COM2) | Analog Common 2 | Bidirectional signal path terminal for second NC switch; connects to NC2 when IN2 = LOW. |
| 6 (IN2) | Digital Control Input 2 | TTL/CMOS-compatible logic input controlling COM2–NC2 path; active-low for NC function. |
| 7 (V+) | Positive Supply | Single power rail input; supports 2.7V–12V; exposed pad must be soldered to V+ plane for thermal management. |
| 8 (NC1) | Analog Normally Closed 1 | Normally closed terminal of first switch; connects to COM1 when IN1 = LOW. |
Key Features
| Feature | Design Value |
|---|---|
| Low RON flatness | 6Ω max variation over full analog signal range - maintains consistent gain and linearity in variable-gain amplifiers. |
| Guaranteed NC behavior | No break-before-make timing - ensures continuous connection during control transitions, critical for fail-safe signal hold. |
| Rail-to-rail analog range | GND to V+ signal handling - eliminates need for external biasing in unipolar sensor or audio signal chains. |
| Ultra-low power | <5µW quiescent dissipation - extends battery life in portable medical monitors and handheld test gear. |
| TTL/CMOS logic compatibility | VINH = 2.4V, VINL = 0.8V at +5V - allows direct interfacing with microcontrollers and FPGAs without level shifters. |
Applications
| Battery-Operated Audio Switching | Portable Test Equipment Multiplexing |
|---|---|
Use Scenario: Routing microphone or headphone signals in Bluetooth headsets and voice recorders with dynamic battery voltage (3.0V–4.2V). IC Role / Device Role / Timing Role: Dual NC SPST switch providing low-distortion, low-leakage signal path selection under varying supply conditions. Use Value: 60Ω max RON and 5pC max charge injection minimize THD and settling errors, preserving audio fidelity across battery discharge cycle. | Use Scenario: Channel selection in handheld multimeters and oscilloscope probes supporting multiple input ranges and sensors. IC Role / Device Role / Timing Role: Precision analog switch enabling fast, repeatable signal routing between DUT and measurement circuitry. Use Value: 2Ω max RON matching ensures identical gain scaling across dual channels, critical for differential measurements and calibration accuracy. |
| Medical Sensor Signal Conditioning | Industrial Data Acquisition Front-Ends |
Use Scenario: Isolating and selecting outputs from ECG, EEG, or temperature sensors in wearable patient monitors. IC Role / Device Role / Timing Role: Low-leakage (10nA max @ +85°C), rail-to-rail analog switch protecting high-impedance sensor nodes from loading effects. Use Value: Sub-10nA off-leakage prevents DC offset drift in biopotential amplifiers, ensuring stable baseline for long-term monitoring. | Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Dual SPST switch with matched RON and low charge injection enabling precise, low-noise signal routing before ADC sampling. Use Value: 6Ω max RON flatness minimizes nonlinearity across full ±10V input range, improving system-level measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4541CSA+ | Two normally open (NO) SPST switches vs. MAX4542CSA+'s NC configuration; identical RON, leakage, and speed specs. | Used where default-open signal paths are required (e.g., safety interlocks, default-signal-off systems). | Select MAX4541CSA+ only when NO logic is mandatory; pinout and footprint are identical, but functional behavior is inverted. |
| ADG702BRMZ-REEL | Single 1-bit SPST switch (vs. dual); 4Ω max RON at +5V; 0.5pC max charge injection; operates down to +1.8V. | Targeted at ultra-low-voltage, single-channel applications where space and power are more constrained than channel count. | Choose ADG702BRMZ-REEL for sub-2V systems or when only one switch is needed; not pin-compatible and requires PCB redesign. |
Compared with MAX4541CSA+, the MAX4542CSA+ provides NC functionality essential for fail-safe hold paths, while ADG702BRMZ-REEL offers lower RON and charge injection at the cost of channel count and package compatibility-requiring layout changes and firmware logic adaptation.
Availability
MAX4542CSA+ is available at Aetrix Electronics and suitable for battery-operated audio systems, portable test equipment, medical sensor interfaces, and industrial data acquisition requiring stable component supply across extended temperature ranges.
Supply support for MAX4542CSA+ 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 targets low-voltage, single-supply analog signal routing where low leakage, low distortion, and rail-to-rail operation are critical-especially in portable and battery-constrained systems.
FAQ
What is the maximum operating temperature for the MAX4542CSA+?
The MAX4542CSA+ is rated for operation from 0°C to +70°C (Commercial grade). Its absolute maximum junction temperature is +150°C, and it guarantees 10nA max COM off-leakage at +85°C ambient-making it suitable for use in thermally stressed environments when derated per SO package thermal resistance (5.88mW/°C above +70°C).
Does the MAX4542CSA+ support break-before-make switching?
No, the MAX4542CSA+ does not implement break-before-make timing. As a dual normally closed (NC) SPST switch, both channels maintain continuity when their respective IN pins are LOW; transition occurs directly between closed and open states without an intentional dead time. Break-before-make is only guaranteed for MAX4543/MAX4544 variants.
Can the MAX4542CSA+ operate from a +3.3V supply?
Yes, the MAX4542CSA+ fully supports +3.3V single-supply operation. At V+ = +3.3V, it delivers 125Ω max on-resistance, 400ns max turn-on time, and maintains 10nA max leakage at +85°C-verified per Electrical Characteristics table for +3.3V supply conditions in the official datasheet.
What is the meaning of "SOT23-8" in the MAX4542CSA+ package designation?
The "SOT23-8" in MAX4542CSA+ denotes an 8-pin Small Outline Transistor package measuring 3.0mm × 3.0mm × 1.45mm, with 0.65mm lead pitch and an exposed thermal pad (EP) that must be soldered to V+ for optimal power dissipation and thermal performance-distinct from the 6-pin SOT23 used by the SPDT MAX4544 variant.
How does the MAX4542CSA+ handle analog signals exceeding the supply rails?
The MAX4542CSA+ clamps analog signals exceeding V+ or GND using internal diodes, limiting forward current to ±10mA continuous. To avoid damage, external current limiting (e.g., series resistors) is required if signals exceed absolute maximum ratings (–0.3V to V+ + 0.3V), and protection diodes may be added per Figure 1 in the datasheet for overvoltage fault tolerance.
MAX4542CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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 ~ 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
MAX4542CSA+ FAQ
1.How can I place an order for MAX4542CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4542CSA+ 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 MAX4542CSA+ reliable?
The price and inventory of MAX4542CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4542CSA+ is usually 5 days.
3.What payment methods are accepted for MAX4542CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4542CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4542CSA+?
MAX4542CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4542CSA+ 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 MAX4542CSA+?
For technical support, including MAX4542CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4542CSA+ requirements.
6.How does Aetrix verify that MAX4542CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX4542CSA+ 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 MAX4542CSA+ meets industry standards.
7.What is the process for return or replacement of MAX4542CSA+?
All MAX4542CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4542CSA+, 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 MAX4542CSA+ part is unused and in its original packaging.
Return procedure for MAX4542CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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