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Analog Devices Inc./Maxim Integrated MAX4543ESA
- Part No.:
- MAX4543ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4543ESA.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,604
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Product details
Overview
MAX4543ESA from Maxim Integrated is a precision dual SPST analog switch with one normally open (NO) and one normally closed (NC) channel, designed for single +2.7V to +12V supply operation. 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 audio multiplexing.
For engineers reviewing the MAX4543ESA datasheet, MAX4543ESA pinout, MAX4543ESA application, or MAX4543ESA equivalent, key selection criteria include its -40°C to +85°C industrial temperature range, SO-8 package compatibility, low leakage (<10nA at +85°C), fast tON/tOFF (35ns/25ns typ), and TTL/CMOS logic compatibility across supply voltages.
Technical Context
The MAX4543ESA implements a dual-channel analog switch architecture where Channel 1 (COM1/NO1/NC1) and Channel 2 (COM2/NO2/NC2) operate independently under separate digital control inputs (IN1, IN2). Each channel guarantees break-before-make timing (tD = 2–10ns) to prevent signal shorting during state transitions.
It supports rail-to-rail analog signal switching from GND to V+, maintains <6Ω RON flatness over the full signal range, and features internal ESD protection (>2000V per Method 3015.7). Its 5µW typical power consumption and 100pA max off-leakage support ultra-low-power portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V single supply - enables direct interface with 3.3V, 5V, and 12V systems without level shifting. |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal signal attenuation and distortion in precision analog paths. |
| RON Matching | 2Ω max between channels - critical for matched gain/phase in differential or dual-path signal conditioning. |
| Charge Injection | 5pC max - reduces voltage glitch and settling error in sample-and-hold and ADC front-end applications. |
| Turn-On/Off Time | tON = 35ns, tOFF = 25ns (typ @ +5V) - supports high-speed multiplexing up to ~10MHz switching rates. |
| Leakage Current | 10nA max at +85°C - preserves accuracy in high-impedance sensor interfaces and battery-monitoring circuits. |
| ESD Protection | >2000V per Method 3015.7 - provides robust handling margin during board assembly and field operation. |
Pinout & Package
MAX4543ESA is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012AC compliant, and rated for -40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Analog Switch 1 - Normally Open terminal | Connects to COM1 only when IN1 = logic high; used for active-high signal path enable. |
| 2 (COM1) | Analog Switch 1 - Common terminal | Primary analog I/O node for Channel 1; bidirectional signal path shared with NO1 and NC1. |
| 3 (IN2) | Digital Control Input 2 | CMOS/TTL-compatible input controlling Channel 2 state; referenced to V+ and GND. |
| 4 (GND) | Ground - Negative Supply Input | Reference plane for analog signals and logic thresholds; must be low-impedance for noise immunity. |
| 5 (NC2) | Analog Switch 2 - Normally Closed terminal | Connects to COM2 when IN2 = logic low; provides default signal path in fail-safe configurations. |
| 6 (COM2) | Analog Switch 2 - Common terminal | Primary analog I/O node for Channel 2; supports independent routing from Channel 1. |
| 7 (IN1) | Digital Control Input 1 | CMOS/TTL-compatible input controlling Channel 1 state; enables synchronous or independent switching. |
| 8 (V+) | Positive Supply Voltage Input | Single supply rail powering both analog and logic sections; accepts +2.7V to +12V with no external regulators. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Break-Before-Make | Ensures no overlap between NO and NC conduction in MAX4543ESA's SPDT-equivalent configuration, preventing momentary shorts in critical signal paths. |
| Low RON Flatness (6Ω max) | Maintains consistent gain and linearity across the full 0V–V+ analog input range, essential for precision DAC/ADC interfacing. |
| TTL/CMOS Logic Compatibility | Operates with standard 0.8V/2.4V thresholds at +5V supply and supports rail-to-rail logic drive at other voltages, simplifying controller interface. |
| Pin Compatibility with MAX323/MAX324/MAX325 | Enables drop-in replacement in legacy designs using those older analog switches, reducing redesign effort and qualification time. |
| 2000V+ ESD Protection | Eliminates need for external ESD diodes in most end-equipment environments, saving PCB area and BOM cost. |
Applications
| Battery-Powered Instrumentation | Audio Signal Multiplexing |
|---|---|
|
Use Scenario: Portable multimeter front-end selecting between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: Dual-channel analog switch routing sensor signals to shared ADC while maintaining isolation between unused paths. Use Value: 10nA max leakage at +85°C prevents measurement drift; 5pC charge injection minimizes offset error in auto-zeroing architectures. |
Use Scenario: Headphone jack detection and left/right channel routing in smartphones and wearables. IC Role / Device Role / Timing Role: SPDT-equivalent function (via NO1/NC1 + COM1) switching audio sources between codec output and amplifier input. Use Value: 35ns tON enables glitch-free channel switching during playback; 60Ω RON introduces negligible insertion loss in line-level paths. |
| Medical Ultrasound Beamforming | Industrial Sensor Signal Conditioning |
|
Use Scenario: Time-gated selection of transducer elements in phased-array ultrasound receivers. IC Role / Device Role / Timing Role: High-speed dual switch enabling sequential sampling of echo returns from multiple piezoelectric elements. Use Value: 2Ω RON matching ensures uniform time-of-flight delay across channels; break-before-make prevents cross-talk between adjacent elements. |
Use Scenario: Configurable input stage for programmable logic controller (PLC) analog input modules supporting voltage/current inputs. IC Role / Device Role / Timing Role: Routing sensor signals (e.g., 4–20mA loop or ±10V) to appropriate conditioning amplifiers or ADC drivers. Use Value: +12V max supply allows direct interface with industrial power rails; 100pA max off-leakage preserves accuracy in high-Z thermocouple or strain gauge bridges. |
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 (vs. SO-8); same electrical specs and -40°C to +85°C rating. | Preferred for space-constrained PCBs; requires re-layout due to different footprint and thermal pad (EP). | Select MAX4543EKA-T when board area is critical and thermal performance via exposed pad is required. |
| MAX4542ESA | Dual NC-only configuration (no NO terminals); identical RON, leakage, speed, and package. | Suitable for fail-closed signal paths (e.g., safety interlocks), but cannot replicate MAX4543ESA's SPDT-equivalent functionality. | Choose MAX4542ESA only if both channels require normally closed behavior and SPDT emulation is unnecessary. |
Compared with MAX4543EKA-T, the MAX4543ESA offers easier soldering and thermal management in standard SO-8 footprints; compared with MAX4542ESA, it uniquely supports mixed NO/NC topology essential for true SPDT-equivalent operation in signal routing and redundancy switching.
Availability
MAX4543ESA is available at Aetrix Electronics and suitable for battery-operated instrumentation, audio multiplexing, medical ultrasound beamforming, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for MAX4543ESA 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4541–MAX4544 family was designed to deliver precision, low-power, single-supply analog switching for portable and space-constrained systems-addressing demand for rail-to-rail signal integrity and robust ESD tolerance in harsh environments.
FAQ
What is the maximum supply voltage rating for MAX4543ESA?
The MAX4543ESA has an absolute maximum supply voltage (V+) 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 power efficiency in high-voltage signal chains while maintaining 5pC charge injection and 2000V ESD protection.
Does MAX4543ESA support rail-to-rail analog signal switching?
Yes, MAX4543ESA supports analog signals from GND to V+ across its full operating supply range. The device's CMOS process and internal architecture ensure minimal RON variation (<6Ω flatness) over the entire 0V–V+ span, verified in Typical Operating Characteristics plots. This enables accurate switching of ±10V industrial signals at +12V supply or 0–3.3V sensor outputs at +3.3V supply without external biasing.
Is MAX4543ESA pin-compatible with older Maxim analog switches?
Yes, MAX4543ESA is pin-compatible with MAX323, MAX324, and MAX325 in the 8-pin SO package. Pin functions (V+, IN1, COM2, NC2, GND, IN2, COM1, NC1) align directly, allowing drop-in replacement in legacy designs. Electrical improvements-including lower RON (60Ω vs. 90Ω), reduced charge injection (5pC vs. 15pC), and enhanced ESD rating (>2000V vs. 2kV)-deliver immediate performance uplift without layout changes.
What is the guaranteed break-before-make timing for MAX4543ESA?
MAX4543ESA guarantees break-before-make operation with a minimum delay (tD) of 2ns and maximum of 10ns (at +25°C, RL = 300Ω, CL = 35pF), as specified in the Electrical Characteristics table. This timing prevents simultaneous conduction between NO1 and NC1 (or NO2 and NC2), eliminating signal shorting during channel transitions-critical for protecting downstream circuitry in PLC I/O modules and medical diagnostic equipment.
How does MAX4543ESA perform at elevated temperatures?
MAX4543ESA is rated for -40°C to +85°C operation, with leakage current specified at ≤10nA max at +85°C and RON increasing by <15% versus +25°C values. On-resistance flatness remains ≤6Ω across temperature, and switching times degrade only modestly (tON ≤ 100ns max at +85°C). These characteristics are validated per data sheet testing and make MAX4543ESA suitable for under-hood automotive sensors and industrial motor drives.
MAX4543ESA 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4543ESA FAQ
1.How can I place an order for MAX4543ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4543ESA 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 MAX4543ESA reliable?
The price and inventory of MAX4543ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4543ESA is usually 5 days.
3.What payment methods are accepted for MAX4543ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4543ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4543ESA?
MAX4543ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4543ESA 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 MAX4543ESA?
For technical support, including MAX4543ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4543ESA requirements.
6.How does Aetrix verify that MAX4543ESA is sourced from the original manufacturer or authorized distributors?
All MAX4543ESA 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 MAX4543ESA meets industry standards.
7.What is the process for return or replacement of MAX4543ESA?
All MAX4543ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4543ESA, 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 MAX4543ESA part is unused and in its original packaging.
Return procedure for MAX4543ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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