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Analog Devices Inc./Maxim Integrated MAX4544CUA
- Part No.:
- MAX4544CUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4544CUA.pdf
- Description:
- IC SWITCH SPDT X 1 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,957
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Product details
Overview
The MAX4544CUA from Maxim Integrated is a single-pole/double-throw (SPDT) analog switch IC designed for precision signal routing in low-voltage, single-supply systems. It operates from +2.7V to +12V, delivers 60Ω max on-resistance, 5pC max charge injection, 100ns max tOFF, and guarantees break-before-make switching - enabling reliable channel isolation in battery-powered instrumentation and audio routing.
For engineers reviewing the MAX4544CUA datasheet, MAX4544CUA pinout, MAX4544CUA application, or MAX4544CUA equivalent, key selection criteria include SPDT topology with guaranteed break-before-make timing, SOT23-6 package compatibility, low leakage (<10nA at +85°C), rail-to-rail analog signal handling (0V to V+), and TTL/CMOS logic compatibility across supply voltages.
Technical Context
The MAX4544CUA implements a monolithic CMOS SPDT switch architecture with independent control of normally open (NO) and normally closed (NC) paths via a single digital input. Its break-before-make timing (2ns–10ns typical) prevents momentary shorting between NO and NC terminals during state transitions, critical for signal integrity in multiplexed sensor or DAC output paths.
It supports bidirectional analog signal flow across COM, NO, and NC terminals with flat on-resistance (6Ω max RON flatness) and tight matching (2Ω max ΔRON between channels), ensuring minimal gain error and crosstalk (<−90dB at 1MHz) in precision measurement and audio applications.
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 logic and analog rails without level shifting. |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal voltage drop and signal attenuation in low-current analog paths (e.g., sensor front-ends). |
| RON Flatness | 6Ω max - maintains consistent gain and linearity across full analog input range (0V to V+). |
| Charge Injection | 5pC max - reduces settling error and glitch energy in sample-and-hold and switched-capacitor circuits. |
| Turn-Off Time (tOFF) | 100ns max - supports high-speed multiplexing up to ~1MHz without significant pulse distortion. |
| Break-Before-Make Delay | 2ns–10ns - eliminates transient short-circuit risk when switching between NO and NC paths. |
| ESD Protection | 2000V per Method 3015.7 - provides robust handling during board assembly and field operation. |
| Leakage Current | 10nA max at +85°C - preserves accuracy in high-impedance nodes (e.g., pH sensors, photodiode amplifiers). |
Pinout & Package
MAX4544CUA is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA, 1.50mm × 2.30mm body), with exposed pad not present. Pin 1 is marked by lettering nearest to it per datasheet note.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO) | Normally Open switch terminal | Connects to COM only when IN = high; used as active signal path in default-open configuration. |
| 2 (COM) | Common analog terminal | Bidirectional I/O node - serves as input or output depending on signal direction and switch state. |
| 3 (NC) | Normally Closed switch terminal | Connects to COM only when IN = low; provides fail-safe path in power-loss or logic-low default states. |
| 4 (GND) | Ground reference | Analog and digital ground return; must be low-impedance to minimize noise coupling into analog paths. |
| 5 (V+) | Positive supply input | Single power rail supplying internal CMOS switch array and logic; accepts 2.7V–12V. |
| 6 (IN) | Digital control input | TTL/CMOS-compatible logic input; high = connect COM to NO, low = connect COM to NC. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Prevents simultaneous conduction between NO and NC paths - essential for avoiding signal contention in multiplexer-based systems. |
| Rail-to-rail analog signal range | Supports signals from GND to V+ without clipping - simplifies design in mixed-voltage systems (e.g., 3.3V MCU controlling 5V sensor signals). |
| Low 5pC charge injection | Minimizes voltage glitch on high-impedance nodes - critical for precision sample-and-hold and ADC driver stages. |
| 2Ω max RON matching | Ensures matched gain and phase response across dual-channel configurations - improves common-mode rejection in differential signal paths. |
| 2000V ESD protection | Reduces need for external protection components - lowers BOM count and PCB area in portable and industrial equipment. |
| 5µW typical supply current | Enables multi-year battery life in always-on monitoring devices (e.g., wearable health sensors, remote telemetry nodes). |
Applications
| Audio Signal Routing | Portable Instrumentation Front-End |
|---|---|
|
Use Scenario: Switching between microphone inputs and line-level outputs in handheld audio analyzers or voice recorders. IC Role / Device Role / Timing Role: SPDT analog switch providing selectable signal path with break-before-make timing to prevent pop/click artifacts during source changes. Use Value: 60Ω max RON and 6Ω flatness preserve frequency response fidelity; 5pC charge injection avoids DC offset shifts in AC-coupled amplifier chains. |
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs into a shared precision ADC in field-deployable data loggers. IC Role / Device Role / Timing Role: Low-leakage (10nA max at +85°C), rail-to-rail SPDT switch isolating high-impedance sensor nodes during channel scanning. Use Value: Sub-10nA leakage prevents measurement drift; 2.7V–12V operation allows direct use with Li-ion battery or regulated 3.3V/5V rails. |
| DAC Output Selection | Medical Ultrasound Beamforming |
|
Use Scenario: Selecting between multiple DAC outputs driving different calibration references or actuator drivers in automated test equipment. IC Role / Device Role / Timing Role: Precision SPDT switch routing calibrated analog outputs with minimal gain error and no signal shorting during transition. Use Value: 2Ω max RON matching ensures consistent full-scale voltage across channels; break-before-make prevents transient shorts to reference buffers. |
Use Scenario: Channel-by-channel analog signal gating in portable ultrasound probe front-ends where space and power are constrained. IC Role / Device Role / Timing Role: Ultra-low-power (5µW), small-footprint SPDT switch enabling time-gated echo signal routing with minimal added noise. Use Value: SOT23-6 package saves board area; 2000V ESD withstand protects against handling damage during probe assembly and field service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4544EUT-T | Same functionality and pinout; rated for −40°C to +85°C industrial temperature range vs. MAX4544CUA's 0°C to +70°C commercial range. | Suitable for extended-temperature deployments (e.g., automotive cabin modules, outdoor industrial controllers) where thermal margin is required. | Select MAX4544EUT-T when operating ambient exceeds +70°C or requires AEC-Q200-aligned reliability screening. |
| ADG1419BRMZ | SPDT switch with lower 4.7Ω typical RON but higher 12pC charge injection; uses 10-lead MSOP package (larger than SOT23-6) and requires dual ±15V or single 5V–36V supply. | Better for high-precision, low-distortion applications (e.g., automated test equipment) where size is secondary to RON flatness and THD. | Choose ADG1419BRMZ only if RON < 5Ω is mandatory and board space allows MSOP footprint; not drop-in compatible due to pin count and layout. |
Compared with MAX4544CUA, MAX4544EUT-T offers identical electrical performance with extended temperature qualification, while ADG1419BRMZ trades smaller package and lower power for higher precision RON and larger footprint - making MAX4544CUA optimal for cost-sensitive, space-constrained commercial portable designs.
Availability
MAX4544CUA is available at Aetrix Electronics and suitable for battery-operated systems, portable instrumentation front-ends, and medical ultrasound beamforming requiring stable component supply, long-lifecycle support, and commercial-grade temperature performance.
Supply support for MAX4544CUA 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 engineered for low-voltage, single-supply analog signal routing in space- and power-constrained systems - emphasizing precision (low RON flatness, low charge injection), reliability (break-before-make, high ESD), and ease of integration (TTL/CMOS logic compatibility, rail-to-rail analog range).
FAQ
What is the maximum supply voltage rating for the MAX4544CUA?
The MAX4544CUA has an absolute maximum supply voltage (V+) of +13V, but its specified operational range is +2.7V to +12V. Operating above +12V risks violating the device's guaranteed electrical characteristics and may reduce long-term reliability. The MAX4544CUA datasheet specifies performance parameters only within the +2.7V to +12V range, and all timing, RON, and leakage values are validated there.
Does the MAX4544CUA support bidirectional analog signal flow?
Yes, the MAX4544CUA supports fully bidirectional analog signal flow across its COM, NO, and NC terminals. This is inherent to its CMOS transmission-gate architecture - the switch conducts equally well regardless of signal direction, enabling flexible use as either an input selector or output router. The MAX4544CUA's rail-to-rail analog range (0V to V+) further ensures signal integrity in both directions without clipping.
Is the MAX4544CUA pin-compatible with other switches in the MAX454x family?
No - the MAX4544CUA uses a 6-pin SOT23-6 package, while MAX4541–MAX4543 variants use 8-pin packages (SOT23-8, µMAX, SO, etc.). Although functionally related, the MAX4544CUA's reduced pin count reflects its single-control SPDT topology versus dual SPST or mixed SPST topologies. Therefore, the MAX4544CUA is not pin-compatible with MAX4541CUA, MAX4542CUA, or MAX4543CUA, and PCB layout changes are required for substitution.
What does "guaranteed break-before-make" mean for the MAX4544CUA?
"Guaranteed break-before-make" means the MAX4544CUA ensures the NC path opens *before* the NO path closes (or vice versa) during logic transitions - eliminating any momentary short between NO and NC terminals. This timing is specified as 2ns–10ns delay (tD) and is tested and guaranteed across temperature and voltage. For the MAX4544CUA, this prevents signal corruption or latch-up in sensitive analog multiplexing applications such as sensor readout or audio source switching.
Can the MAX4544CUA operate from a 3.3V supply?
Yes, the MAX4544CUA is fully specified and functional at +3.3V. Its +2.7V to +12V supply range explicitly includes 3.3V operation. At +3.3V, the MAX4544CUA maintains TTL/CMOS logic compatibility (VINH = 2.4V, VINL = 0.8V), delivers ≤125Ω typical RON, and achieves ≤400ns tON - making it suitable for modern low-voltage microcontroller interfaces. All key parameters (leakage, charge injection, ESD) remain valid at 3.3V per the datasheet's Electrical Characteristics tables.
MAX4544CUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- 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-uMAX/uSOP
MAX4544CUA FAQ
1.How can I place an order for MAX4544CUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4544CUA 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 MAX4544CUA reliable?
The price and inventory of MAX4544CUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4544CUA is usually 5 days.
3.What payment methods are accepted for MAX4544CUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4544CUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4544CUA?
MAX4544CUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4544CUA 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 MAX4544CUA?
For technical support, including MAX4544CUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4544CUA requirements.
6.How does Aetrix verify that MAX4544CUA is sourced from the original manufacturer or authorized distributors?
All MAX4544CUA 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 MAX4544CUA meets industry standards.
7.What is the process for return or replacement of MAX4544CUA?
All MAX4544CUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4544CUA, 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 MAX4544CUA part is unused and in its original packaging.
Return procedure for MAX4544CUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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