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Analog Devices Inc./Maxim Integrated MAX4544CSA
- Part No.:
- MAX4544CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4544CSA.pdf
- Description:
- IC SWITCH SPDT X 1 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,737
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Product details
Overview
The MAX4544CSA 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, and guarantees break-before-make switching - enabling reliable signal path isolation in audio, test equipment, and portable instrumentation.
For engineers reviewing the MAX4544CSA datasheet, MAX4544CSA pinout, MAX4544CSA application, or MAX4544CSA equivalent, key selection criteria include its SOT23-6 package footprint, guaranteed break-before-make timing (2ns–10ns), ±10mA continuous current rating, and compatibility with +3.3V/+5V logic interfaces in battery-powered and space-constrained designs.
Technical Context
The MAX4544CSA implements a CMOS-based SPDT analog switch architecture with TTL/CMOS-compatible digital control inputs. Its internal structure ensures bidirectional signal flow between COM, NO, and NC terminals while maintaining low leakage (<10nA at +85°C) and rail-to-rail analog signal handling (0V to V+).
Break-before-make operation is hardware-guaranteed (not software-configured), with tD = 2ns–10ns typical delay between channel disconnect and reconnect. The device requires no external biasing and supports full-swing analog signals without level-shifting circuitry when powered from +3.3V, +5V, or +12V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V single supply - enables direct integration into 3.3V and 5V systems without level shifters |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal signal attenuation and voltage drop in precision analog paths |
| Charge Injection | 5pC max - reduces glitch-induced errors in sample-and-hold and multiplexed ADC front-ends |
| Break-Before-Make Delay | 2ns–10ns - prevents momentary short-circuit between NO and NC paths during switching |
| Leakage Current | 10nA max at +85°C - preserves signal integrity in high-impedance sensor and medical monitoring circuits |
| Switching Speed | tON = 35ns, tOFF = 25ns at +5V - supports fast multiplexing in data acquisition and communications systems |
| ESD Protection | 2000V per Method 3015.7 - provides robust handling during PCB assembly and field operation |
Pinout & Package
SOT23-6 package: 2.9mm × 2.8mm body, 0.95mm pitch, exposed pad (EP) - optimized for compact PCB layouts and thermal dissipation in portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NO | Normally Open terminal | Connects to COM only when IN = logic high; used as primary signal output path |
| 2 - COM | Common terminal | Signal input/output node shared between NO and NC; bidirectional analog path |
| 3 - NC | Normally Closed terminal | Connects to COM only when IN = logic low; provides alternate signal path |
| 4 - GND | Ground reference | Return path for supply and logic; must be low-impedance for noise-sensitive analog operation |
| 5 - V+ | Positive supply input | Single power rail for analog and digital sections; accepts +2.7V to +12V |
| 6 - IN | Digital control input | TTL/CMOS-compatible; drives internal switch matrix; logic high selects NO, low selects NC |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Hardware-enforced isolation prevents simultaneous conduction between NO and NC paths |
| RON matching & flatness | 2Ω max channel-to-channel RON mismatch and 6Ω max RON variation over signal range - critical for matched gain paths |
| Rail-to-rail analog operation | Supports 0V to V+ signal swing without distortion - eliminates need for external biasing networks |
| Low power consumption | <5µW quiescent power - extends battery life in handheld test gear and portable medical devices |
| Pin compatibility | Drop-in replacement for MAX323/MAX324/MAX325 in SOT23-6 layout - simplifies legacy design upgrades |
Applications
| Audio Signal Routing | Portable Test Equipment |
|---|---|
Use Scenario: Selecting between microphone and line-in inputs in a handheld audio analyzer. IC Role / Device Role / Timing Role: SPDT analog switch controlling signal path selection under microcontroller GPIO control. Use Value: 5pC charge injection prevents audible pop/click artifacts; 60Ω RON ensures flat frequency response up to 10MHz. |
Use Scenario: Multiplexing sensor inputs (thermocouple, RTD, pH) into a single ADC channel in a field-deployable multimeter. IC Role / Device Role / Timing Role: Precision analog switch isolating high-impedance sources before digitization. Use Value: 10nA max leakage at +85°C avoids measurement drift; break-before-make prevents cross-talk between channels. |
| Medical Ultrasound Front-End | Battery-Powered Data Loggers |
Use Scenario: Routing echo return signals from multiple transducer elements to a common receive amplifier chain. IC Role / Device Role / Timing Role: Low-noise, low-distortion SPDT switch enabling time-division multiplexing of ultrasound channels. Use Value: -90dB crosstalk and -76dB off-isolation suppress inter-channel interference; 35ns tON supports >10MHz sampling rates. |
Use Scenario: Switching between internal reference voltage and external sensor outputs in a solar-powered environmental monitor. IC Role / Device Role / Timing Role: Ultra-low-power analog switch enabling duty-cycled sensing to extend multi-year battery life. Use Value: 5µW standby power minimizes system quiescent draw; +2.7V minimum supply allows operation directly from Li-ion cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX323ESA | Higher RON (100Ω max), no guaranteed break-before-make, SOT23-6 pinout identical | Lower precision; suitable for non-critical DC/low-frequency switching only | Select when cost sensitivity outweighs signal integrity requirements and break-before-make is not required |
| ADG849BRMZ | Lower RON (0.5Ω typ), but higher charge injection (12pC), different pinout (no direct replacement) | Higher performance in low-RON applications, but requires PCB redesign and suffers larger switching transients | Select when ultra-low on-resistance is mandatory and layout revision is acceptable |
Compared with MAX323ESA and ADG849BRMZ, the MAX4544CSA uniquely balances low RON, guaranteed break-before-make, and SOT23-6 pin compatibility - making it optimal for upgrading legacy designs where board space, timing safety, and analog fidelity are jointly constrained.
Availability
MAX4544CSA is available at Aetrix Electronics and suitable for portable instrumentation, medical diagnostics, and industrial test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4544CSA 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications markets.
The MAX4541–MAX4544 family was engineered for low-voltage, single-supply analog signal routing in battery-powered and space-constrained systems - emphasizing precision, reliability, and ease of integration without external support components.
FAQ
What is the maximum analog signal voltage range supported by the MAX4544CSA?
The MAX4544CSA supports analog signals from 0V to V+ (rail-to-rail), meaning its full operating range spans the entire positive supply voltage - e.g., 0V to +5V when powered from 5V, or 0V to +3.3V at 3.3V supply. This eliminates the need for external biasing networks in most signal conditioning applications and is confirmed in the Electrical Characteristics table under "Analog Signal Range".
Does the MAX4544CSA require external pull-up or pull-down resistors on its IN pin?
No, the MAX4544CSA does not require external pull-up or pull-down resistors on the IN pin. Its TTL/CMOS-compatible input accepts logic-high voltages from 2.4V (at +5V supply) up to V+, and logic-low down to 0V - with guaranteed switching thresholds across the full temperature range. This is explicitly stated in the "Logic Levels" section of the Applications Information.
Is the MAX4544CSA pin-compatible with the MAX323 series?
Yes, the MAX4544CSA is pin-compatible with the MAX323, MAX324, and MAX325 in the SOT23-6 package. The pin assignments for V+, IN, COM, NO, NC, and GND match exactly - enabling drop-in replacement without PCB modification. This compatibility is explicitly noted in the "Features" section of the datasheet.
What is the thermal performance of the MAX4544CSA in SOT23-6 package?
The MAX4544CSA in SOT23-6 has a continuous power dissipation rating of 571mW at +70°C, derating linearly by 7.1mW/°C above that temperature. Its absolute maximum junction temperature is +150°C, and the package includes an exposed pad (EP) intended to be soldered to a thermal pad on the PCB for enhanced heat transfer - details confirmed in the Absolute Maximum Ratings and Package Information sections.
Can the MAX4544CSA be used with a +3.3V supply while driving +5V logic inputs?
No - the MAX4544CSA's logic inputs are referenced to its own V+ supply. When powered from +3.3V, the IN pin must be driven between 0V and +3.3V for guaranteed operation. Driving it with +5V logic violates the absolute maximum rating for IN (V+ + 0.3V), risking latch-up or damage. The datasheet specifies rail-to-rail logic compatibility *only* relative to the applied V+.
MAX4544CSA 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-SOIC
MAX4544CSA FAQ
1.How can I place an order for MAX4544CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4544CSA 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 MAX4544CSA reliable?
The price and inventory of MAX4544CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4544CSA is usually 5 days.
3.What payment methods are accepted for MAX4544CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4544CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4544CSA?
MAX4544CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4544CSA 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 MAX4544CSA?
For technical support, including MAX4544CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4544CSA requirements.
6.How does Aetrix verify that MAX4544CSA is sourced from the original manufacturer or authorized distributors?
All MAX4544CSA 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 MAX4544CSA meets industry standards.
7.What is the process for return or replacement of MAX4544CSA?
All MAX4544CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4544CSA, 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 MAX4544CSA part is unused and in its original packaging.
Return procedure for MAX4544CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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