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Analog Devices Inc./Maxim Integrated MAX4642EUA+T
- Part No.:
- MAX4642EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4642EUA+T.pdf
- Description:
- IC SWITCH SPST-NC X 2 4OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,134
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Product details
Overview
MAX4642EUA+T from Maxim Integrated is a dual, single-pole/single-throw (SPST), normally closed (NC) analog switch IC operating from a single +1.8V to +5.5V supply. It delivers 4Ω max on-resistance at +5V, 0.6Ω max RON matching between channels, and 1Ω max RON flatness over the full analog signal range, enabling precision signal routing in low-voltage battery-powered audio and data-acquisition systems.
For engineers reviewing the MAX4642EUA+T datasheet, MAX4642EUA+T pinout, MAX4642EUA+T application, or MAX4642EUA+T equivalent, this page provides verified electrical specs, µMAX package details, leakage performance (<0.35nA), switching speed (tON = 18ns typ), rail-to-rail analog operation, and real-world application context for signal integrity-critical designs.
Technical Context
The MAX4642EUA+T implements two independent CMOS SPST switches with NC configuration, each controlled by a dedicated logic input (IN1/IN2) that drives internal gate translators to switch V+ and GND to the analog path. Its architecture guarantees matched on-resistance and flat RON across the entire analog signal range (0V to V+), supporting bidirectional signal flow without polarity constraints.
Internal ESD protection diodes clamp analog pins (COM1/COM2, NC1/NC2) to V+ and GND, defining leakage paths that are temperature-stable and specified down to ±0.25nA over –40°C to +85°C. The device consumes <0.01µW quiescent power and exhibits –97dB crosstalk and –80dB off-isolation at 1MHz, confirming high channel separation in multi-channel routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - supports direct integration into Li-ion, 3.3V, and 5V systems without level-shifting. |
| On-Resistance (RON) | 4Ω max at +5V - ensures minimal signal attenuation and voltage drop in precision analog paths. |
| RON Matching | 0.6Ω max between channels - enables matched gain/attenuation in differential or dual-path signal conditioning. |
| RON Flatness | 1Ω max over full analog range - preserves linearity and THD (0.018%) across 0V–V+ signal swing. |
| Leakage Current | <0.35nA over –40°C to +85°C - critical for high-impedance sample-and-hold and sensor front-end accuracy. |
| Switching Speed | tON = 18ns typ, tOFF = 12ns typ - supports >20MHz digital control of analog signals with minimal transient disturbance. |
| Crosstalk / Off-Isolation | –97dB / –80dB at 1MHz - prevents inter-channel interference in multi-signal routing applications. |
Pinout & Package
The MAX4642EUA+T is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), compatible with standard SO-8 footprints but offering 50% smaller area and improved thermal resistance. Pin 1 is marked with a dot; the package requires no heatsink under typical 362mW max power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | NC1, NC2 | Normally closed analog terminals - conduct to COM when IN = low; open when IN = high. |
| 2, 6 | IN1, IN2 | Logic control inputs - TTL/CMOS-compatible only at +5V; drive internal gate translators. |
| 3, 7 | GND | Ground reference for logic and analog sections - must be low-impedance for leakage and noise control. |
| 4 | COM1 | Analog common terminal for first switch - bidirectional; connects to NC1 when IN1 = low. |
| 8 | V+ | Positive supply input - bypass with 0.1µF ceramic capacitor to GND for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal range | Supports 0V to V+ signal swing without clipping - essential for full-scale ADC/DAC interfacing. |
| Guaranteed RON flatness | 1Ω max variation across analog range - maintains consistent gain and minimizes harmonic distortion. |
| Low charge injection | 2pC typical - reduces sampling error in precision hold circuits and multiplexed data acquisition. |
| Ultra-low quiescent power | <0.01µW - extends battery life in portable instrumentation and always-on sensor nodes. |
| High off-isolation | –80dB at 1MHz - isolates inactive signal paths to prevent crosstalk in dense PCB layouts. |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Selecting between multiple microphone inputs or headphone outputs in portable media players and wearables. IC Role / Device Role / Timing Role: Dual NC analog switch providing glitch-free signal path selection with sub-20ns switching. Use Value: Enables seamless audio source switching while maintaining THD <0.018% and preserving SNR in 16-bit+ audio chains. | Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a shared ADC in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog switch with matched RON and <0.35nA leakage to minimize measurement offset and gain error. Use Value: Delivers 16-bit effective resolution by limiting channel-to-channel gain mismatch to ≤0.6Ω and leakage-induced drift. |
| Sample-and-Hold Circuits | Communications Signal Switching |
Use Scenario: Capturing fast analog transients in oscilloscope front-ends or RF detector circuits. IC Role / Device Role / Timing Role: Low-charge-injection (2pC) NC switch controlling hold capacitor connection with precise timing. Use Value: Reduces aperture uncertainty and settling error, enabling accurate sampling of signals up to 10MHz bandwidth. | Use Scenario: Routing baseband I/Q signals or clock references in small-cell base stations and IoT modems. IC Role / Device Role / Timing Role: High-isolation (–80dB), low-crosstalk (–97dB) analog switch managing signal path redundancy and calibration loops. Use Value: Prevents intermodulation and phase noise degradation in sensitive RF receiver chains operating at 1–10MHz. |
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 |
|---|---|---|---|
| MAX4642EUA+ | Same die, tape-and-reel vs. cut-tape packaging; identical electrical specs and µMAX footprint. | No functional difference; selected for automated SMT assembly vs. manual prototyping. | Choose MAX4642EUA+ for volume production with pick-and-place; MAX4642EUA+T for flexible small-batch use. |
| ADG722BRMZ | 2.5Ω max RON at +5V, but higher 1.5nA leakage and no guaranteed RON flatness spec. | Suitable for lower-precision, cost-sensitive industrial controls where leakage <1nA is acceptable. | Select ADG722BRMZ only if RON matching and flatness are not required; MAX4642EUA+T remains superior for metrology-grade designs. |
Compared with MAX4642EUA+ and ADG722BRMZ, the MAX4642EUA+T offers the tightest RON matching (0.6Ω) and lowest leakage (<0.35nA), making it optimal for high-fidelity signal routing where channel consistency and DC accuracy are non-negotiable.
Availability
MAX4642EUA+T is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4642EUA+T 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 MAX4641/MAX4642/MAX4643 family was designed specifically for low-voltage, high-speed analog signal routing where precision RON, ultra-low leakage, and rail-to-rail operation are critical - targeting portable instrumentation, medical sensors, and compact communications hardware.
FAQ
What is the maximum supply voltage rating for the MAX4642EUA+T?
The MAX4642EUA+T has an absolute maximum supply voltage (V+) of +6V, but its operational specification is guaranteed from +1.8V to +5.5V. Exceeding +5.5V may cause undefined behavior or damage, and operation above +6V risks permanent failure per the Absolute Maximum Ratings table. Always maintain V+ within +4.5V to +5.5V for full compliance with RON, leakage, and timing specs.
Does the MAX4642EUA+T support rail-to-rail analog signal operation?
Yes, the MAX4642EUA+T supports true rail-to-rail analog signal operation - its analog pins (COM1/COM2, NC1/NC2) handle signals from 0V to V+ with guaranteed performance. This is confirmed in the datasheet's "Rail-to-Rail™ Analog Signal Range" feature and Electrical Characteristics tables, where VCOM, VNC are specified from 0V to V+ across all supply voltages.
What is the typical on-resistance flatness of the MAX4642EUA+T at +5V supply?
The MAX4642EUA+T guarantees ≤1Ω on-resistance flatness at +5V supply, defined as the difference between maximum and minimum RON measured over the full analog signal range (0V to V+). This value is tested and specified in the Electrical Characteristics table and validated in Figure TOC4641/2/3toc01, ensuring consistent signal fidelity across the entire input span.
Can the MAX4642EUA+T be used with a +3.3V supply?
Yes, the MAX4642EUA+T operates fully specified at +3.3V (within its +2.7V to +3.3V range), delivering ≤8Ω max RON, ≤0.6Ω RON match, and <0.35nA leakage. However, logic-level compatibility is only guaranteed at +5V; at +3.3V, input thresholds scale proportionally (VIH = 2.0V, VIL = 0.4V), requiring compatible 3.3V logic drivers.
What is the maximum leakage current specification for the MAX4642EUA+T over temperature?
The MAX4642EUA+T specifies a maximum COM_ on-leakage current of ±0.25nA and NO_/NC_ off-leakage of ±0.25nA over the full –40°C to +85°C operating range. These values are guaranteed in the Electrical Characteristics tables and confirmed in Figure TOC4641/2/3toc03, making it suitable for high-impedance sensor interfaces where leakage-induced offset must remain below 1µV.
MAX4642EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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+T FAQ
1.How can I place an order for MAX4642EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4642EUA+T 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+T reliable?
The price and inventory of MAX4642EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4642EUA+T is usually 5 days.
3.What payment methods are accepted for MAX4642EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4642EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4642EUA+T?
MAX4642EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4642EUA+T 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+T?
For technical support, including MAX4642EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4642EUA+T requirements.
6.How does Aetrix verify that MAX4642EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4642EUA+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX4642EUA+T?
All MAX4642EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4642EUA+T, 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+T part is unused and in its original packaging.
Return procedure for MAX4642EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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