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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:165
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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, guaranteed break-before-make switching, and supports TTL/CMOS logic inputs - ideal for audio/video switching and battery-powered instrumentation.
For engineers reviewing the MAX4544CUA+ datasheet, MAX4544CUA+ pinout, MAX4544CUA+ application, or MAX4544CUA+ equivalent, key selection criteria include SPDT topology with NC/NO/COM terminals, SOT23-6 package constraints, RON flatness ≤6Ω, leakage <10nA at +85°C, and compatibility with +3.3V/+5V DAC/ADC interface circuits.
Technical Context
The MAX4544CUA+ implements a CMOS-based SPDT analog switch architecture with integrated level-shifting logic to ensure TTL/CMOS compatibility across its full +2.7V to +12V supply range. Its internal structure guarantees break-before-make operation during state transitions, preventing momentary shorting between NC and NO paths.
It features bidirectional signal handling, rail-to-rail analog voltage support (GND to V+), and low dynamic parameters: tON = 35ns typ, tOFF = 25ns typ at +5V, with <5µW quiescent power consumption and 2000V HBM ESD protection per Method 3015.7.
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 shifters |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal signal attenuation and gain error in precision analog paths |
| RON Flatness | 6Ω max - maintains consistent channel gain across full analog input range (0V to V+) |
| Charge Injection | 5pC max - reduces glitch-induced settling errors in sample-and-hold and multiplexed ADC front-ends |
| Leakage Current | 10nA max at +85°C - preserves accuracy in high-impedance sensor interfaces and battery-monitoring circuits |
| Switching Speed | tON = 35ns, tOFF = 25ns typ at +5V - supports audio-band and medium-speed data acquisition |
| ESD Protection | 2000V HBM - meets industrial handling requirements without external protection components |
Pinout & Package
SOT23-6 package (3.0mm × 1.7mm × 1.3mm body, 0.95mm pitch), thermally enhanced with exposed pad connected to V+ per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO) | Normally Open switch terminal | Connects to COM when IN = high; used as active signal path in default-open configuration |
| 2 (COM) | Common analog port | Bidirectional I/O node shared between NO and NC paths; must be routed with controlled impedance |
| 3 (NC) | Normally Closed switch terminal | Connects to COM when IN = low; provides fail-safe path during logic low or power-down |
| 4 (GND) | Ground reference | Analog and digital ground return; requires low-inductance connection to minimize noise coupling |
| 5 (V+) | Positive supply input | Single power rail for analog and logic sections; accepts 2.7V–12V; exposed pad must connect to V+ |
| 6 (IN) | Digital control input | TTL/CMOS-compatible; drives internal switch gate; logic high enables NO–COM path, logic low enables NC–COM path |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 2ns minimum delay prevents NC–NO shorting during transition - critical for protecting downstream circuitry |
| Rail-to-rail analog signal range | Supports signals from GND to V+ without distortion - eliminates need for external biasing in unipolar sensor interfaces |
| Low power consumption | <5µW at +5V - extends battery life in portable medical devices and handheld test equipment |
| Pin compatibility | Direct replacement for MAX323/MAX324/MAX325 in SPDT configurations - simplifies legacy design upgrades |
| Thermal performance | 571mW max power dissipation in SOT23-6 - allows operation up to +70°C ambient without derating |
Applications
| Audio Signal Routing | Portable Instrumentation |
|---|---|
Use Scenario: Switching between microphone and line-in inputs in a handheld audio recorder. IC Role / Device Role / Timing Role: SPDT analog switch selecting signal source prior to amplifier/ADC stage. Use Value: 5pC charge injection minimizes pop/click artifacts; 60Ω RON avoids loading high-impedance electret mics. | Use Scenario: Multiplexing multiple sensor outputs (thermocouple, RTD, pH) into a single ADC channel. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential sampling of isolated sensor nodes. Use Value: 10nA max leakage at +85°C preserves measurement integrity in high-Z sensor bridges. |
| Medical Ultrasound Front-End | +3.3V/+5V Data Converter Interface |
Use Scenario: Routing transmit/receive paths in portable ultrasound probe head electronics. IC Role / Device Role / Timing Role: High-fidelity SPDT switch isolating T/R paths during pulse-echo cycles. Use Value: Break-before-make timing prevents transmitter energy from damaging sensitive LNA inputs. | Use Scenario: Connecting dual DAC outputs to shared analog output stage in programmable power supply controller. IC Role / Device Role / Timing Role: Analog signal selector enabling dynamic output source switching under microcontroller control. Use Value: 6Ω RON flatness ensures matched gain across both DAC channels, reducing calibration overhead. |
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 | -40°C to +85°C operating range vs. 0°C to +70°C; same SOT23-6 package and pinout | Required for extended-temperature industrial or automotive environments | Select when wide temperature range is mandatory; otherwise MAX4544CUA+ suffices for commercial-grade designs |
| ADG1419BRMZ | Higher RON (1.3Ω typ), wider supply (±5V or +5V to +36V), but larger MSOP-10 package | Used where ultra-low on-resistance or bipolar supply support is needed | Choose only if sub-2Ω RON or dual-supply operation is required; not drop-in compatible due to pin count and layout |
Compared with MAX4544EUT-T, the MAX4544CUA+ offers lower cost and sufficient performance for commercial temperature applications; compared with ADG1419BRMZ, it provides smaller footprint and lower power but trades off on-resistance and supply flexibility.
Availability
MAX4544CUA+ is available at Aetrix Electronics and suitable for audio/video switching, portable instrumentation, medical ultrasound front-ends, and +3.3V/+5V DAC/ADC interface circuits requiring stable component supply and long-term sourcing continuity.
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 designed specifically for low-voltage, single-supply precision analog switching in space-constrained, battery-sensitive systems - emphasizing low leakage, low charge injection, and guaranteed break-before-make behavior.
FAQ
What is the maximum analog signal voltage range supported by the MAX4544CUA+?
The MAX4544CUA+ supports analog signals from GND to V+, fully rail-to-rail, with no degradation in on-resistance flatness. When powered from +5V, this means 0V to +5V; at +12V supply, it handles 0V to +12V. This capability eliminates external level-shifting circuitry in unipolar sensor and audio signal paths, and is confirmed in the Electrical Characteristics table and Typical Operating Characteristics plots (Figure 1).
Does the MAX4544CUA+ provide break-before-make switching, and is it guaranteed?
Yes, the MAX4544CUA+ guarantees break-before-make operation with a minimum 2ns delay between NC opening and NO closing, as specified in the Electrical Characteristics table (tD = 2ns min). This feature is explicitly documented for MAX4544 devices in the Features section and Truth Table, ensuring safe signal path isolation during logic transitions - critical for protecting sensitive receivers in T/R switching applications.
What is the thermal performance limit of the MAX4544CUA+ in its SOT23-6 package?
The MAX4544CUA+ in SOT23-6 has a maximum continuous power dissipation of 571mW at +70°C ambient, with a thermal derating factor of 7.1mW/°C above that temperature. This rating is derived from the Absolute Maximum Ratings table and enables reliable operation in commercial-grade portable equipment without heatsinking, provided PCB copper area and airflow meet standard SOT23-6 layout guidelines.
Can the MAX4544CUA+ operate from a +3.3V supply, and how does performance change versus +5V?
Yes, the MAX4544CUA+ is fully specified for +3.3V operation (V+ = +3.0V to +3.6V). At +3.3V, RON increases to 125Ω max (vs. 60Ω max at +5V), tON/tOFF slow to 400ns/175ns max, and leakage remains ≤10nA at +85°C. These values are explicitly listed in the "Electrical Characteristics-Single +3.3V Supply" section, confirming robust functionality across both common logic supply rails.
Is the MAX4544CUA+ pin-compatible with older Maxim analog switches?
Yes, the MAX4544CUA+ is pin-compatible with the MAX323, MAX324, and MAX325 SPDT analog switches in SOT23-6 footprint, as stated in the Features section. This allows direct substitution in legacy designs without PCB modification, preserving existing layout while upgrading to lower leakage (10nA vs. 25nA), lower charge injection (5pC vs. 15pC), and improved RON flatness (6Ω vs. 10Ω).
MAX4544CUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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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