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Analog Devices Inc./Maxim Integrated MAX4642EUA
- Part No.:
- MAX4642EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4642EUA.pdf
- Description:
- IC SWITCH SPST-NC X 2 4OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,816
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Product details
Overview
The MAX4642EUA from Maxim Integrated is a dual, single-pole/single-throw (SPST) analog switch with two normally closed (NC) channels, operating from a single +1.8V to +5.5V supply. It delivers 4Ω maximum on-resistance at +5V, 0.6Ω channel-to-channel RON matching, and 1Ω RON flatness across the full signal range, enabling precision low-voltage signal routing in battery-powered audio and data-acquisition systems.
For engineers reviewing the MAX4642EUA datasheet, MAX4642EUA pinout, MAX4642EUA application, or MAX4642EUA equivalent, this device is selected for high-speed (<20ns switching), ultra-low leakage (<0.35nA), rail-to-rail analog signal handling in space-constrained designs requiring guaranteed RON performance over temperature and supply voltage.
Technical Context
The MAX4642EUA implements complementary CMOS transistor pairs per channel to achieve bidirectional, rail-to-rail analog conduction with minimal distortion. Its logic inputs accept TTL/CMOS levels only at +5V supply; at lower voltages, input thresholds scale proportionally (e.g., VIL = 0.4V at +3V).
Each NC channel features internal gate drive that ensures continuous conduction when unasserted and fast break-before-make transition during switching-though break-before-make timing (tBBM) applies only to the MAX4643 variant, not MAX4642EUA. Off-isolation exceeds –80dB at 1MHz, and crosstalk remains below –97dB at 1MHz due to optimized layout and low off-capacitance (7pF per terminal).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - supports direct interfacing with Li-ion, 3.3V, and 5V logic domains without level shifters. |
| On-Resistance (RON) | 4Ω max at +5V, 8Ω max at +3V - ensures minimal signal attenuation and gain error in precision sensor or audio paths. |
| RON Matching | 0.6Ω max between channels at +5V - enables matched gain/attenuation in differential or dual-path signal conditioning. |
| Switching Time (tON/tOFF) | 18ns/12ns typical - supports >20MHz digital control rates and preserves integrity of fast analog transients. |
| Analog Signal Range | Rail-to-rail (0V to V+) - allows full utilization of supply headroom for unipolar or bipolar-shifted AC signals. |
| Leakage Current | <0.35nA over –40°C to +85°C - critical for high-impedance sample-and-hold and battery-monitoring circuits. |
| Off-Isolation | –80dB at 1MHz - suppresses coupling between inactive channels in multi-source routing applications. |
Pinout & Package
MAX4642EUA is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), thermally enhanced with exposed pad (not electrically connected). Pin 1 is top-left corner, marked by dot or bevel; pin count proceeds counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | NC1, NC2 | Normally closed analog terminals - conduct to COM when IN = low; high-impedance when IN = high. |
| 2, 6 | IN1, IN2 | Active-low logic inputs - drive internal switches; compatible with 5V TTL/CMOS at V+ = 5V. |
| 3, 7 | GND | Ground reference for analog and digital sections - must be low-impedance return path for leakage and switching currents. |
| 4 | COM1 | Common analog node for first NC switch - bidirectional; connects to NC1 when IN1 = low. |
| 8 | V+ | Positive supply input - requires local 0.1µF ceramic bypass capacitor to GND for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog operation | Supports 0V to V+ signal swing without clipping - eliminates need for external biasing in portable audio front-ends. |
| Guaranteed RON flatness (1Ω) | Minimizes harmonic distortion (<0.018% THD) across full signal range - essential for high-fidelity audio switching. |
| Ultra-low quiescent power (<0.01µW) | Reduces system standby current - extends battery life in always-on monitoring or IoT edge nodes. |
| Low charge injection (2pC) | Prevents voltage glitches in sample-and-hold and ADC multiplexing - maintains DC accuracy after switching. |
| High off-isolation (–80dB @ 1MHz) | Enables clean separation of RF, audio, or sensor channels sharing common analog backplane. |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Switching microphone or headphone signals in Bluetooth earbuds powered by 3.7V Li-ion cells. IC Role / Device Role / Timing Role: Dual NC analog switch controlling signal path selection with <20ns settling to support real-time voice processing. Use Value: 4Ω RON and rail-to-rail operation preserve SNR and dynamic range without external amplification or level shifting. |
Use Scenario: Multiplexing multiple sensor outputs (thermocouple, RTD, strain gauge) into a single 16-bit SAR ADC. IC Role / Device Role / Timing Role: Precision analog switch providing matched channel resistance and sub-nA leakage for high-impedance sensor interfaces. Use Value: 0.6Ω RON matching and 1Ω flatness minimize gain mismatch and nonlinearity errors across channels. |
| Communications Circuit Protection | Sample-and-Hold Signal Selection |
|
Use Scenario: Isolating RF front-end test points from baseband circuitry during automated calibration sequences. IC Role / Device Role / Timing Role: High-isolation NC switch disconnecting sensitive nodes while maintaining DC continuity during idle state. Use Value: –80dB off-isolation at 1MHz prevents RF leakage into measurement paths, improving test repeatability. |
Use Scenario: Selecting between hold capacitors in a dual-slope integrating ADC or switched-capacitor filter bank. IC Role / Device Role / Timing Role: Low-charge-injection NC switch ensuring minimal voltage step (<1mV) when toggling hold nodes. Use Value: 2pC charge injection and <0.35nA leakage prevent droop and offset drift during long hold periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4642EGA | Same electrical specs, but in 3mm × 3mm QFN package with thermal pad - 1951mW max power dissipation vs. 362mW for µMAX. | Preferred for higher-power or thermally constrained PCB layouts where board area is less critical than thermal performance. | Select MAX4642EGA when thermal management dominates over footprint; otherwise MAX4642EUA offers identical function in smaller outline. |
| ADG722BRMZ | 2-channel SPST, but normally open (NO); 4.5Ω RON at 5V; 1.5nA leakage; 12ns tON; uses 10-lead MSOP package. | Suitable for NO-dominant architectures (e.g., default-open safety interlocks); not drop-in due to NO vs. NC logic polarity and pinout mismatch. | Choose ADG722BRMZ only if system design requires default-open behavior and MSOP footprint is acceptable; MAX4642EUA remains optimal for NC-critical fail-safe routing. |
Compared with MAX4642EGA, the MAX4642EUA provides identical analog performance in a smaller 8-pin µMAX footprint ideal for ultra-compact wearables; versus ADG722BRMZ, it offers NC functionality, lower leakage, and guaranteed RON flatness - making it superior for precision battery-operated signal routing where default closure is required.
Availability
MAX4642EUA is available at Aetrix Electronics and suitable for battery-operated equipment, audio and video signal routing, and low-voltage data-acquisition systems requiring stable component supply across industrial temperature ranges.
Supply support for MAX4642EUA 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 MAX4642EUA belongs to Maxim's high-speed, low-voltage analog switch product line, engineered specifically for precision signal routing in space- and power-constrained portable electronics where rail-to-rail operation and guaranteed RON specs are mandatory.
FAQ
What is the maximum supply voltage rating for the MAX4642EUA?
The MAX4642EUA has an absolute maximum supply voltage (V+) of +6V, but its specified operational range is +1.8V to +5.5V. Operating above +5.5V risks violating the guaranteed RON, leakage, and timing specifications - the MAX4642EUA must be used within this window to ensure compliance with datasheet performance limits across temperature.
Does the MAX4642EUA support rail-to-rail analog signals?
Yes, the MAX4642EUA supports true rail-to-rail analog signal operation from 0V to V+, as confirmed in both the General Description and Electrical Characteristics tables. This capability is intrinsic to the MAX4642EUA's CMOS architecture and enables full utilization of supply voltage without external bias networks.
What is the on-resistance matching specification for the MAX4642EUA?
The MAX4642EUA guarantees 0.6Ω maximum on-resistance matching (∆RON) between its two NC channels when operated at +5V supply, as stated in the Electrical Characteristics table. This parameter is measured across the full –40°C to +85°C temperature range and is critical for matched-gain applications like differential signal routing.
Can the MAX4642EUA be used with a 3.3V logic interface?
The MAX4642EUA accepts logic inputs compatible with TTL/CMOS levels only at +5V supply; at +3.3V, input thresholds scale (VIL = 0.4V, VIH = 2.0V), so direct connection to standard 3.3V logic is valid. However, the MAX4642EUA does not provide level translation - the host controller must meet these scaled thresholds to ensure reliable switching.
What is the leakage current performance of the MAX4642EUA over temperature?
The MAX4642EUA guarantees total analog leakage current of less than ±0.35nA across the full –40°C to +85°C operating temperature range, as verified in the Electrical Characteristics tables for COM_, NO_, and NC_ terminals. This ultra-low leakage is maintained regardless of supply voltage and is essential for high-impedance sensing applications.
MAX4642EUA 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:
- 2
- On-State Resistance (Max):
- 4Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 15ns, 8ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 7pF, 7pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -97dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4642EUA FAQ
1.How can I place an order for MAX4642EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4642EUA 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 MAX4642EUA reliable?
The price and inventory of MAX4642EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4642EUA is usually 5 days.
3.What payment methods are accepted for MAX4642EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4642EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4642EUA?
MAX4642EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4642EUA 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 MAX4642EUA?
For technical support, including MAX4642EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4642EUA requirements.
6.How does Aetrix verify that MAX4642EUA is sourced from the original manufacturer or authorized distributors?
All MAX4642EUA 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 MAX4642EUA meets industry standards.
7.What is the process for return or replacement of MAX4642EUA?
All MAX4642EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4642EUA, 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 MAX4642EUA part is unused and in its original packaging.
Return procedure for MAX4642EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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