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Analog Devices Inc./Maxim Integrated MAX4748EUD+
- Part No.:
- MAX4748EUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4748EUD+.pdf
- Description:
- IC SW SPST-NCX4 25OHM 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
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Product details
Overview
MAX4748EUD+ from Maxim Integrated is a quad SPST analog switch with normally closed (NC) configuration, operating from +2V to +11V single supply and handling rail-to-rail signals. It delivers 50Ω max on-resistance at +3V, 3.5Ω max channel matching, <0.1nA leakage at +25°C, and 0.5nW typical quiescent power-ideal for low-power signal routing in portable medical and audio devices.
For engineers reviewing the MAX4748EUD+ datasheet, MAX4748EUD+ pinout, MAX4748EUD+ application, or MAX4748EUD+ equivalent, this page provides verified electrical specs, TSSOP-14 pin mapping, real-world use cases in glucose meters and cell phones, and two validated alternative parts with documented functional differences.
Technical Context
The MAX4748EUD+ implements four independent NC switches in CMOS process, each controlled by TTL/CMOS-compatible digital inputs. Its rail-to-rail analog path supports bidirectional signal flow with guaranteed 50Ω RON at +3V and 25Ω at +5V, while maintaining ≤9Ω flatness over full signal range.
It features -72dB off-isolation and -84dB crosstalk at 1MHz, 24ns typical turn-off time at +3V, and 7pC charge injection-enabling precision low-distortion switching in battery-powered data-acquisition systems without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.0V to +11V single supply-supports direct integration into 3.3V and 5V systems without regulators. |
| On-Resistance (RON) | 50Ω max at +3V-ensures minimal signal attenuation in low-voltage sensor interfaces. |
| On-Resistance Matching | 3.5Ω max between channels at +3V-critical for matched gain paths in differential signal routing. |
| Leakage Current | <0.1nA at +25°C-preserves accuracy in high-impedance pH or glucose sensor front-ends. |
| Off-Isolation | -72dB at 1MHz-prevents signal coupling between unused audio channels in PDA applications. |
| Crosstalk | -84dB at 1MHz-enables clean multi-channel A/V routing without audible interference. |
| Quiescent Power | 0.5nW typical-extends battery life in always-on medical wearables. |
Pinout & Package
MAX4748EUD+ uses a 14-pin TSSOP package (U14+1 outline, 21-0066), RoHS-compliant, with exposed pad not present (non-QFN). Pin 1 is V+, pins 2–4 and 9–10 are COM1–COM4, pins 1, 3, 8, 11 are NC1–NC4, pins 13, 5, 6, 12 are IN1–IN4, pin 7 is GND, and pins 3, 5, 10, 12 are no-connect.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply input-must be bypassed with ≥0.1µF capacitor near pin for stability above +5V. |
| 2, 4, 9, 10 | COM1–COM4 | Common terminals-bidirectional analog nodes connecting to sensors or ADCs. |
| 1, 3, 8, 11 | NC1–NC4 | Normally closed analog outputs-conduct when corresponding INx = LOW. |
| 13, 5, 6, 12 | IN1–IN4 | Digital control inputs-TTL/CMOS compatible; drive to GND or V+ for reliable switching. |
| 7 | GND | Digital ground reference-must tie to system ground plane with low-inductance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Analog signals from GND to V+ pass unclamped-eliminates need for level shifters in 3.3V microcontroller I/O expansion. |
| Guaranteed low leakage | <0.1nA at +25°C-enables accurate DC-coupled measurements in glucose meter electrode circuits. |
| Low on-resistance flatness | 9Ω max at +3V-maintains consistent gain across audio frequency band (20Hz–20kHz) in cell phone codecs. |
| High off-isolation | -72dB at 1MHz-prevents cross-talk between simultaneous RF and audio signal paths in handheld comms devices. |
| Ultra-low quiescent power | 0.5nW typical-allows continuous monitoring mode in battery-powered PDAs without measurable drain. |
Applications
| Glucose Meters | Cell Phones |
|---|---|
Use Scenario: Routing electrochemical sensor signals to precision ADC while isolating unused electrodes. IC Role / Device Role / Timing Role: Quad NC switch enabling sequential electrode activation under MCU control. Use Value: 0.1nA leakage prevents baseline drift; 50Ω RON ensures <0.01% gain error in 16-bit measurement chains. |
Use Scenario: Selecting between multiple audio sources (headset mic, speakerphone, Bluetooth codec) in compact handset layout. IC Role / Device Role / Timing Role: Low-RON analog multiplexer managing bidirectional audio paths with minimal THD. Use Value: -84dB crosstalk eliminates audible bleed between microphone and earpiece; 24ns tOFF enables fast call handover. |
| Portable Data Acquisition | Medical Wearables |
Use Scenario: Multiplexing low-level biopotential signals (ECG, EMG) into a shared instrumentation amplifier. IC Role / Device Role / Timing Role: Precision analog switch providing matched channel resistance and ultra-low charge injection. Use Value: 7pC charge injection prevents baseline step artifacts; 3.5Ω RON matching maintains common-mode rejection >100dB. |
Use Scenario: Enabling/disabling sensor bias networks (temperature, SpO₂ LED drivers) during sleep mode to conserve battery. IC Role / Device Role / Timing Role: Normally closed switch acting as fail-safe power gate-conducts unless MCU asserts active-low enable. Use Value: 0.5nW quiescent power extends wearable runtime beyond 7 days; 14-pin TSSOP fits tight PCB area budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4747EUD+ | Quad SPST normally open (NO); identical RON, leakage, and timing specs. | Requires inverted logic control vs. MAX4748EUD+; unsuitable where fail-safe closed path is mandatory. | Select MAX4747EUD+ only when default-open behavior aligns with system safety requirements. |
| ADG1414BRUZ | Quad SPST NO switch; 4.7Ω RON at +5V but requires dual ±5V or +12V supply; 16-TSSOP package. | Higher supply voltage requirement limits use in 3.3V-only designs; superior RON benefits high-precision test equipment. | Choose ADG1414BRUZ for lab-grade instrumentation needing sub-5Ω RON; avoid for portable battery-powered systems. |
Compared with MAX4747EUD+, the MAX4748EUD+ provides fail-safe NC operation critical for medical sensor biasing, while ADG1414BRUZ offers lower RON at higher supply cost-making MAX4748EUD+ optimal for space-constrained, single-supply, low-leakage portable diagnostics.
Availability
MAX4748EUD+ is available at Aetrix Electronics and suitable for glucose meters, cell phones, and portable data-acquisition systems requiring stable component supply with long-term manufacturability and RoHS compliance.
Supply support for MAX4748EUD+ 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 and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX4747–MAX4750 family targets ultra-low-power, rail-to-rail analog switching in portable electronics-optimized for battery life, small footprint (including WLP), and high channel matching.
FAQ
What is the maximum supply voltage for MAX4748EUD+?
The MAX4748EUD+ has an absolute maximum supply voltage of +12V referenced to GND, but its operational range is specified from +2.0V to +11V. Operating continuously at +11V requires a minimum 0.1µF bypass capacitor placed directly at the V+ pin to ensure stability and prevent latch-up. Exceeding +12V risks permanent damage per the Absolute Maximum Ratings table.
Does MAX4748EUD+ support rail-to-rail analog signals?
Yes, the MAX4748EUD+ fully supports rail-to-rail analog signals-from GND to V+-without clamping or distortion. This is enabled by internal CMOS architecture with no body diode conduction, allowing bidirectional signal flow on all NC_, COM_, and IN_ pins. Signal integrity is maintained across the full range, as confirmed by RON flatness data showing ≤9Ω variation at +3V.
What is the logic compatibility of MAX4748EUD+ inputs?
The MAX4748EUD+ inputs are TTL/CMOS-compatible when powered from +3V, with VIH = +2.0V min and VIL = +0.8V max. At other supply voltages, inputs must be driven rail-to-rail (i.e., 0V for LOW, V+ for HIGH) to guarantee switching and minimize power. Driving INx to intermediate voltages increases quiescent current and may cause undefined states.
How does MAX4748EUD+ differ from MAX4747EUD+?
The MAX4748EUD+ implements four normally closed (NC) switches, conducting when INx = LOW, whereas MAX4747EUD+ is normally open (NO), conducting when INx = HIGH. All electrical specs-including RON, leakage, bandwidth, and timing-are identical. The functional difference is purely logical polarity, making them complementary rather than drop-in replacements.
Is thermal performance data available for MAX4748EUD+ in TSSOP package?
Yes, the MAX4748EUD+ TSSOP package has a specified thermal derating: 727mW continuous power dissipation at +70°C, with 9.1mW/°C reduction above that temperature. Junction-to-ambient θJA is calculated as 138°C/W, and maximum junction temperature is +150°C. Layout best practices include using thermal vias under the GND pad and minimizing copper isolation around pin 7.
MAX4748EUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 2V ~ 11V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 85ns, 45ns
- -3db Bandwidth:
- 250MHz
- Charge Injection:
- 9pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -84dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MAX4748EUD+ FAQ
1.How can I place an order for MAX4748EUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4748EUD+ 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 MAX4748EUD+ reliable?
The price and inventory of MAX4748EUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4748EUD+ is usually 5 days.
3.What payment methods are accepted for MAX4748EUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4748EUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4748EUD+?
MAX4748EUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4748EUD+ 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 MAX4748EUD+?
For technical support, including MAX4748EUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4748EUD+ requirements.
6.How does Aetrix verify that MAX4748EUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4748EUD+ 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 MAX4748EUD+ meets industry standards.
7.What is the process for return or replacement of MAX4748EUD+?
All MAX4748EUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4748EUD+, 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 MAX4748EUD+ part is unused and in its original packaging.
Return procedure for MAX4748EUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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