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Analog Devices Inc./Maxim Integrated MAX4543EUA-T
- Part No.:
- MAX4543EUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4543EUA-T.pdf
- Description:
- IC SW SPST-NO/NCX2 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX4543EUA-T 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 mixed-signal front-ends.
For engineers reviewing the MAX4543EUA-T datasheet, MAX4543EUA-T pinout, MAX4543EUA-T application, or MAX4543EUA-T equivalent, key selection criteria include its -40°C to +85°C extended temperature rating, SOT23-8 package compatibility, low leakage (<10nA at +85°C), fast tON/tOFF (35ns/25ns typ at +5V), and guaranteed break-before-make timing for SPDT-equivalent operation.
Technical Context
The MAX4543EUA-T implements two independent CMOS transmission gates with complementary control logic: IN1 controls COM1–NO1/NC1, and IN2 controls COM2–NO2/NC2. Its break-before-make architecture ensures no momentary short between NC and NO paths during state transitions - critical for preventing signal glitches in audio routing or sensor multiplexing.
It operates rail-to-rail on analog inputs (GND to V+), supports TTL/CMOS logic inputs across its full supply range, and maintains low RON flatness (6Ω max) and tight channel matching (2Ω max ΔRON) - enabling high-fidelity signal switching without gain or phase mismatch in precision measurement paths.
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 systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal voltage drop and signal attenuation in low-current analog paths. |
| RON Matching | 2Ω max between channels - preserves amplitude balance in differential or dual-channel signal routing. |
| Charge Injection | 5pC max - reduces settling error and glitch energy in sample-and-hold or ADC input conditioning circuits. |
| Leakage Current | 10nA max at +85°C - maintains signal integrity in high-impedance sensor interfaces over industrial temperature range. |
| Switching Speed | tON = 35ns, tOFF = 25ns (typ, +5V) - supports >10MHz analog signal switching without edge distortion. |
| Break-Before-Make | Guaranteed - prevents transient shorts during channel reconfiguration in SPDT-mode applications. |
Pinout & Package
The MAX4543EUA-T is housed in an 8-pin SOT23-8 package (top mark: AAAG), with exposed pad not connected internally. Pin 1 is COM1, Pin 2 is IN1, Pin 3 is GND, Pin 4 is NC2, Pin 5 is COM2, Pin 6 is IN2, Pin 7 is V+, and Pin 8 is NO1. NC1 is unconnected and must be left floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COM1) | Analog common terminal, Channel 1 | Bidirectional signal path shared between NO1 and NC1; must be routed with controlled impedance in high-frequency applications. |
| 2 (IN1) | Digital control input, Channel 1 | Active-high logic input controlling COM1–NO1/NC1; TTL/CMOS compatible across full supply range. |
| 3 (GND) | Ground reference | Return path for supply current and logic thresholds; requires low-inductance connection to minimize ground bounce. |
| 4 (NC2) | Not internally connected | No internal bond wire; must remain unconnected on PCB to avoid parasitic coupling or ESD path disruption. |
| 5 (COM2) | Analog common terminal, Channel 2 | Independent bidirectional path for second channel; electrically isolated from COM1 except through substrate. |
| 6 (IN2) | Digital control input, Channel 2 | Independent logic input for COM2–NO2/NC2; enables asynchronous switching of dual channels. |
| 7 (V+) | Positive supply input | Single power rail supporting full analog signal swing (GND to V+); must be bypassed with ≥1µF ceramic capacitor near pin. |
| 8 (NO1) | Normally open terminal, Channel 1 | Connects to COM1 only when IN1 = high; used as primary signal output in SPDT-equivalent configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make timing | Guaranteed 2ns–10ns delay between NC turn-off and NO turn-on - eliminates cross-conduction in SPDT emulation. |
| RON flatness | 6Ω max over full analog signal range (GND to V+) - ensures consistent gain and linearity across input voltage swing. |
| ESD protection | 2000V per Method 3015.7 - provides robust handling margin without external protection diodes in assembly environments. |
| Low power consumption | <5µW quiescent - extends battery life in portable medical devices and handheld test equipment. |
| Channel-to-channel isolation | -76dB off-isolation at 1MHz - suppresses crosstalk between independently switched signals in multi-channel data acquisition. |
Applications
| Audio Signal Routing | Sensor Multiplexing |
|---|---|
Use Scenario: Switching between microphone inputs and line-level audio sources in portable voice recorders or conferencing systems. IC Role / Device Role / Timing Role: Dual-channel analog switch providing SPDT-equivalent functionality with break-before-make to prevent pop/click artifacts during source selection. Use Value: 5pC max charge injection and 60Ω max RON preserve audio fidelity and SNR across 20Hz–20kHz bandwidth. | Use Scenario: Selecting among multiple thermistor or RTD sensor inputs in industrial temperature monitoring modules. IC Role / Device Role / Timing Role: Precision analog switch routing high-impedance sensor outputs to a shared ADC front-end while maintaining channel matching. Use Value: 2Ω max RON matching and <10nA leakage at +85°C ensure consistent gain calibration and minimal offset drift across channels. |
| Medical Instrumentation | Test & Measurement |
Use Scenario: Configuring signal paths in portable ECG or EEG amplifiers where low-noise, low-leakage switching is required before programmable gain stages. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating electrode inputs during lead-off detection or gain reconfiguration cycles. Use Value: 100pA max off-leakage at room temperature and 10nA at +85°C prevent DC bias errors in ultra-high-impedance biopotential sensing. | Use Scenario: Automated signal path selection in benchtop multimeters or oscilloscope front-ends requiring fast, repeatable channel switching. IC Role / Device Role / Timing Role: Dual SPST switch enabling simultaneous routing of reference and measurement signals with matched on-resistance. Use Value: 35ns/25ns typical switching speed supports >10MHz sampling rate synchronization; 6Ω RON flatness minimizes harmonic distortion in AC measurements. |
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 exposed thermal pad (EP); same electrical specs and pinout as MAX4543EUA-T. | Superior thermal performance in high-duty-cycle or ambient >70°C environments due to EP-to-V+ thermal path. | Select MAX4543EKA-T when board layout allows EP soldering and thermal management is critical; otherwise MAX4543EUA-T suffices. |
| ADG1419BRMZ | Single SPDT switch (not dual SPST), 4.5Ω max RON, ±15V dual-supply capable, but requires separate VDD/VSS rails. | Requires dual supply and lacks independent dual-channel control; suitable only for single-path SPDT use cases. | Choose ADG1419BRMZ only if SPDT topology and dual-supply operation are mandatory; MAX4543EUA-T offers superior flexibility for dual independent switching. |
Compared with MAX4543EKA-T, the MAX4543EUA-T trades thermal performance for simpler assembly (no EP soldering), while ADG1419BRMZ introduces supply complexity and loses dual-channel independence - making MAX4543EUA-T optimal for compact, single-supply, dual-path routing.
Availability
MAX4543EUA-T is available at Aetrix Electronics and suitable for battery-operated instrumentation, medical sensor interfaces, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4543EUA-T 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 industrial, medical, and communications applications.
The MAX4541–MAX4544 family was engineered for low-voltage, single-supply analog signal routing in space-constrained, battery-sensitive systems - emphasizing low leakage, rail-to-rail operation, and guaranteed timing behavior.
FAQ
What is the maximum supply voltage rating for the MAX4543EUA-T?
The MAX4543EUA-T 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 remains ≤60Ω and leakage stays within spec, making it suitable for higher-voltage industrial signal chains where 5V switches would saturate.
Does the MAX4543EUA-T support rail-to-rail analog signal switching?
Yes, the MAX4543EUA-T supports analog signals from GND to V+ across both channels. Its CMOS transmission gate architecture maintains low and flat on-resistance over the full range - verified down to 0V and up to V+ in Electrical Characteristics tables. This enables direct interfacing with sensors, DACs, and ADCs without external level-shifting circuitry.
Is the MAX4543EUA-T pin-compatible with older Maxim analog switches?
Yes, the MAX4543EUA-T is pin-compatible with MAX323, MAX324, and MAX325 in the SOT23-8 package. Pin assignments for COM1, IN1, GND, NC2, COM2, IN2, V+, and NO1 match identically. However, note that MAX323/MAX324/MAX325 lack break-before-make timing and exhibit higher RON (100Ω typ), so functional replacement requires validation of timing and resistance requirements in the target design.
What is the guaranteed break-before-make time for the MAX4543EUA-T?
The MAX4543EUA-T guarantees a break-before-make time (tD) of 2ns to 10ns (min to max) under RL = 300Ω, CL = 35pF, and TA = +25°C conditions. This specification ensures no overlap between NC and NO conduction states during logic transitions - critical for preventing signal shorts in SPDT-emulation topologies such as audio source selection or relay replacement circuits.
How does the MAX4543EUA-T perform at elevated temperatures?
At +85°C, the MAX4543EUA-T maintains 10nA max COM on-leakage and 60Ω max RON (tested at +5V). On-resistance increases predictably with temperature - rising ~0.5Ω/°C above +25°C - but remains within 2Ω matching tolerance across channels. This behavior is documented in Typical Operating Characteristics curves and validated across the full -40°C to +85°C industrial temperature range.
MAX4543EUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- 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-µMAX
MAX4543EUA-T FAQ
1.How can I place an order for MAX4543EUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4543EUA-T 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 MAX4543EUA-T reliable?
The price and inventory of MAX4543EUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4543EUA-T is usually 5 days.
3.What payment methods are accepted for MAX4543EUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4543EUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4543EUA-T?
MAX4543EUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4543EUA-T 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 MAX4543EUA-T?
For technical support, including MAX4543EUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4543EUA-T requirements.
6.How does Aetrix verify that MAX4543EUA-T is sourced from the original manufacturer or authorized distributors?
All MAX4543EUA-T 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 MAX4543EUA-T meets industry standards.
7.What is the process for return or replacement of MAX4543EUA-T?
All MAX4543EUA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4543EUA-T, 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 MAX4543EUA-T part is unused and in its original packaging.
Return procedure for MAX4543EUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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