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Analog Devices Inc./Maxim Integrated MAX4751EUD+
- Part No.:
- MAX4751EUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4751EUD+.pdf
- Description:
- IC SW SPST-NOX4 900MOHM 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:122
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Product details
Overview
MAX4751EUD+ from Maxim Integrated is a low-voltage, single-supply quad SPST analog switch with 0.9Ω max on-resistance at +3V, 30ns turn-on time, and rail-to-rail signal handling capability. It features four normally open (NO) switches, operates from +1.6V to +3.6V, and delivers <1µW quiescent power-ideal for battery-powered audio routing and low-voltage data-acquisition systems.
For engineers reviewing the MAX4751EUD+ datasheet, MAX4751EUD+ pinout, MAX4751EUD+ application, or MAX4751EUD+ equivalent, key selection criteria include verified RON matching (0.12Ω max), break-before-make absence, 14-pin TSSOP package compatibility, and 1.8V CMOS logic interface support at +3V supply.
Technical Context
The MAX4751EUD+ implements CMOS-based transmission-gate architecture optimized for low-voltage operation, enabling bidirectional analog signal switching across the full GND-to-V+ range without distortion. Its control logic accepts 1.8V-compatible inputs even when V+ = +3V, and internal charge-pump-free design ensures minimal charge injection (21pC typical).
All four NO switches are independently controlled by CMOS-level IN1–IN4 inputs, with no inter-channel timing coupling. The device exhibits flat on-resistance (<0.1Ω variation over 0–3V signal swing at +3V) and guaranteed leakage performance (±5nA COM off-leakage at TA = –40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.9Ω max at V+ = +3V - enables ≤100mA continuous current with <90mV drop at full load |
| RON Matching | 0.12Ω max between channels at +3V - ensures consistent gain/attenuation across switched paths |
| Turn-On/Off Time | tON = 30ns, tOFF = 25ns (RL = 50Ω, CL = 35pF) - supports >10MHz signal routing without edge degradation |
| Analog Signal Range | 0V to V+ (rail-to-rail) - preserves full dynamic range of baseband audio and sensor signals |
| Supply Voltage Range | +1.6V to +3.6V single supply - compatible with Li-ion, coin-cell, and regulated 1.8V/2.5V/3.3V rails |
| Logic Compatibility | 1.8V CMOS input thresholds at +3V supply - interfaces directly with modern low-voltage microcontrollers |
| Quiescent Supply Current | <1µA - negligible impact on standby battery life in always-on portable systems |
Pinout & Package
MAX4751EUD+ is housed in a 14-pin TSSOP package (3.0mm × 4.4mm, 0.65mm pitch) with exposed pad not present. Pin 14 is V+, pins 7 and 13 are GND, and all COM/NO/IN pins are assigned per functional diagram in datasheet Rev 2, page 6.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 8, 11 | NO1–NO4 | Normally open switch terminals - connect only when corresponding INx = HIGH; zero DC path when OFF |
| 2, 4, 9, 10 | COM1–COM4 | Common analog node per switch - bidirectional I/O capable of sourcing/sinking up to ±100mA |
| 5, 6, 12, 13 | IN1–IN4 | Digital control inputs - 1.8V CMOS compatible; drive NOx closed when HIGH (VIH ≥ 1.4V) |
| 7 | GND | Analog/digital reference ground - must be low-impedance connection to minimize noise coupling |
| 14 | V+ | Single positive supply - powers analog core and logic; bypassing with 0.1µF to GND required |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | 0.1Ω max variation across 0–3V signal swing - maintains linearity in precision instrumentation front-ends |
| Ultra-low leakage | ±5nA max COM off-leakage over –40°C to +85°C - prevents signal corruption in high-impedance sensor multiplexing |
| Fast, matched switching | 30ns tON/25ns tOFF with <2ns channel-to-channel skew - enables synchronized multi-path sampling |
| Rail-to-rail analog capability | Supports signals from GND to V+ without clipping - eliminates level-shifting in 3.3V/2.5V mixed-signal systems |
| Minimal charge injection | 21pC typical - reduces glitch-induced error in sampled-data systems like ADC front-ends |
Applications
| Audio Signal Routing | Battery-Powered Data Acquisition |
|---|---|
|
Use Scenario: Switching microphone inputs or headphone outputs in portable media players. IC Role / Device Role / Timing Role: Quad SPST analog switch selecting between multiple audio sources or destinations with zero-crossing control. Use Value: 0.9Ω RON minimizes insertion loss (<0.04dB at 32Ω load), while 30ns switching avoids audible pop/click artifacts. |
Use Scenario: Multiplexing thermistor, RTD, or pH sensor signals into a single ADC channel. IC Role / Device Role / Timing Role: Low-leakage analog multiplexer enabling high-impedance sensor interfacing without gain/offset drift. Use Value: ±5nA COM off-leakage ensures <0.1% measurement error at 10MΩ source impedance; rail-to-rail range captures full sensor output. |
| Cellular Phone Peripherals | PCMCIA Card Interface |
|
Use Scenario: Routing SIM card, camera module, or USB D+/D– lines in space-constrained smartphone designs. IC Role / Device Role / Timing Role: Voltage-level agnostic signal switch supporting 1.8V/3.3V mixed-voltage peripheral interconnect. Use Value: 1.8V CMOS-compatible inputs eliminate level shifters; 14-pin TSSOP footprint saves PCB area vs. discrete solutions. |
Use Scenario: Isolating host controller signals from PCMCIA card slots during hot-plug events. IC Role / Device Role / Timing Role: Fault-tolerant analog switch providing galvanic isolation and ESD-safe signal gating. Use Value: Absolute maximum rating of –0.3V to +4V on all I/O pins protects against transient overvoltage during card insertion/removal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4752EUD+ | Four normally closed (NC) switches instead of NO; identical RON, timing, and supply specs | Used where default-closed signal path is required (e.g., fail-safe power monitoring) | Select MAX4752EUD+ only when NC behavior is mandatory; not functionally interchangeable with MAX4751EUD+ |
| TMUX1574PWR | 0.5Ω max RON at 3.3V, but requires minimum 1.08V supply; 1.8V logic compatible; 16-pin TSSOP | Better RON for ultra-low-loss applications, but larger footprint and no 1.6V operation | Choose TMUX1574PWR if lower on-resistance is critical and 1.6V operation is unnecessary; verify layout compatibility |
Compared with MAX4752EUD+ (NC variant) and TMUX1574PWR (lower RON, higher min-VCC), the MAX4751EUD+ uniquely balances ultra-low voltage operation (+1.6V), NO configuration, and industry-standard 14-pin TSSOP packaging for space- and power-constrained portable designs.
Availability
MAX4751EUD+ is available at Aetrix Electronics and suitable for battery-powered systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across industrial temperature ranges.
Supply support for MAX4751EUD+ 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 power, sensing, and connectivity applications.
The MAX4751EUD+ belongs to Maxim's low-voltage analog switch family, engineered specifically for portable and energy-sensitive systems demanding rail-to-rail signal integrity and sub-1µW quiescent power.
FAQ
What is the maximum continuous current rating for MAX4751EUD+?
The MAX4751EUD+ supports ±100mA continuous current per channel (COM/NO terminals) at TA ≤ +70°C, as specified in Absolute Maximum Ratings. Derating applies above +70°C per package thermal resistance. This rating enables direct switching of audio drivers, sensor bias currents, and digital I/O lines without external buffering.
Does MAX4751EUD+ support break-before-make switching?
No, the MAX4751EUD+ does not implement break-before-make (BBM) functionality. BBM is exclusive to the MAX4753 variant (two NO + two NC switches). The MAX4751EUD+ uses simple SPST NO topology with independent control-switches transition directly between open and closed states without guaranteed dead-time.
Can MAX4751EUD+ operate from a 1.8V supply?
Yes, the MAX4751EUD+ operates across +1.6V to +3.6V. At +1.8V supply, RON increases to 2.5Ω max (vs. 0.9Ω at +3V), tON/tOFF extend to 35ns/30ns, and logic thresholds adjust to VIH ≥ 1.0V/VIL ≤ 0.4V-fully functional for ultra-low-power applications where speed/resistance trade-offs are acceptable.
What is the purpose of the exposed pad in MAX4751EUD+?
The MAX4751EUD+ uses a 14-pin TSSOP package (U14+1) and does not feature an exposed pad. Exposed pad (EP) is present only in the QFN variants (e.g., MAX4751EGE+T). For MAX4751EUD+, thermal dissipation relies solely on standard TSSOP copper leads and PCB copper area under the body.
How is logic compatibility achieved when V+ = 3V but driving MCU outputs at 1.8V?
The MAX4751EUD+ accepts logic inputs up to +3.6V regardless of V+, and its VIH threshold is guaranteed ≥1.4V at +3V supply. When driven by a 1.8V MCU, the 1.4V VIH is met (1.8V > 1.4V), ensuring reliable HIGH detection. No level shifter is needed-this interoperability is explicitly validated in the Electrical Characteristics table.
MAX4751EUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 900mOhm
- Channel-to-Channel Matching (ΔRon):
- 30mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 3.6V
- 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
MAX4751EUD+ FAQ
1.How can I place an order for MAX4751EUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4751EUD+ 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 MAX4751EUD+ reliable?
The price and inventory of MAX4751EUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4751EUD+ is usually 5 days.
3.What payment methods are accepted for MAX4751EUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4751EUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4751EUD+?
MAX4751EUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4751EUD+ 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 MAX4751EUD+?
For technical support, including MAX4751EUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4751EUD+ requirements.
6.How does Aetrix verify that MAX4751EUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4751EUD+ 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 MAX4751EUD+ meets industry standards.
7.What is the process for return or replacement of MAX4751EUD+?
All MAX4751EUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4751EUD+, 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 MAX4751EUD+ part is unused and in its original packaging.
Return procedure for MAX4751EUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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