My Inquiry
My Account
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:4,618
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4642EUA+ from Maxim Integrated is a dual, single-pole/single-throw (SPST), normally closed (NC) analog switch IC operating from +1.8V to +5.5V single supply, featuring 4Ω max on-resistance at +5V, 0.6Ω max RON matching between channels, and 12ns typical turn-off time. It targets low-voltage signal routing in battery-powered instrumentation and portable audio systems.
For engineers reviewing the MAX4642EUA+ datasheet, MAX4642EUA+ pinout, MAX4642EUA+ application, or MAX4642EUA+ equivalent, key selection criteria include guaranteed RON flatness (1Ω), rail-to-rail analog signal range, sub-0.35nA leakage over –40°C to +85°C, and µMAX-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4642EUA+ implements two independent CMOS SPST switches with NC configuration, each controlled by a dedicated logic input (IN1/IN2) referenced to GND. Its internal level translators ensure full switching functionality across the entire +1.8V to +5.5V supply range, while ESD protection diodes clamp analog pins to V+ and GND.
Switch operation is bidirectional: COM1/COM2 serve as common terminals, NC1/NC2 as normally closed paths, and all analog pins (COM, NC) support rail-to-rail signal swing. The device guarantees <20ns switching times, <0.01µW quiescent power, and maintains ≤1Ω RON flatness over the full analog voltage range at +5V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - enables direct interface with Li-ion battery, 3.3V, and 5V logic domains without level shifters |
| On-Resistance (RON) | 4Ω max at +5V - ensures minimal signal attenuation and gain error in precision sensor or audio paths |
| RON Matching | 0.6Ω max between channels - critical for matched gain/phase in differential or dual-path signal conditioning |
| Turn-Off Time (tOFF) | 12ns typ - supports high-speed multiplexing up to ~30MHz without significant settling delay |
| Analog Signal Range | Rail-to-rail (0V to V+) - preserves full dynamic range of baseband signals in portable ADC/DAC interfaces |
| Leakage Current | <0.35nA over –40°C to +85°C - prevents DC offset drift in high-impedance sensor front-ends |
| Off-Isolation | –80dB at 1MHz - suppresses crosstalk between active and inactive signal paths in multi-channel systems |
Pinout & Package
The MAX4642EUA+ is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), compatible with standard SO-8 footprints but with reduced footprint area and thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | NC1, NC2 | Normally closed analog terminals - conduct to COM when IN = LOW; must be terminated or routed per signal integrity requirements |
| 2, 6 | IN1, IN2 | Digital control inputs - TTL/CMOS-compatible at +5V; logic LOW (≤0.8V) closes switch, HIGH (≥2.4V) opens it |
| 3, 7 | GND | Analog and digital ground reference - requires low-impedance connection to system ground plane to minimize noise coupling |
| 4 | COM1 | Common terminal for first switch - bidirectional path between NC1 and COM1; connects to signal source or load |
| 8 | V+ | Positive supply input - must be bypassed with 0.1µF ceramic capacitor directly to GND for stable switching performance |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full 0V to V+ swing without clipping - essential for preserving fidelity in audio and sensor signal chains |
| Guaranteed RON flatness | 1Ω max variation across signal range at +5V - minimizes harmonic distortion in AC-coupled applications |
| Low charge injection | 2pC typical - reduces glitch-induced errors in sample-and-hold and switched-capacitor circuits |
| High off-isolation and low crosstalk | –80dB off-isolation / –97dB crosstalk at 1MHz - enables clean channel separation in multi-input data acquisition |
| Ultra-low quiescent power | <0.01µW - extends battery life in always-on monitoring systems without compromising switching speed |
Applications
| Battery-Operated Equipment | Audio Signal Routing |
|---|---|
Use Scenario: Power management in handheld medical monitors requiring automatic sensor path selection during sleep mode. IC Role / Device Role / Timing Role: Dual NC switch isolates unused analog sensors from bias networks while maintaining low-leakage standby state. Use Value: Sub-0.35nA leakage prevents battery drain over weeks; 4Ω RON avoids gain error in calibrated ECG front-end amplifiers. | Use Scenario: Input multiplexing in portable USB-C audio adapters supporting analog mic and line-in sources. IC Role / Device Role / Timing Role: SPST NC switches route microphone or line-level signals to codec ADC inputs under firmware control. Use Value: Rail-to-rail signal range preserves full 2VPP audio swing; 12ns tOFF enables glitch-free source switching during playback. |
| Low-Voltage Data-Acquisition Systems | Sample-and-Hold Circuits |
Use Scenario: Channel selection in 16-bit SAR ADC modules powered from 3.3V LDOs in industrial IoT nodes. IC Role / Device Role / Timing Role: Dual NC configuration provides fail-safe default connection to primary sensor while enabling secondary calibration path activation. Use Value: 0.6Ω RON matching ensures matched channel gain; 8Ω max RON at +3V maintains SNR >90dB at 100ksps sampling. | Use Scenario: Hold capacitor discharge prevention in precision multichannel sample-and-hold arrays for spectral analysis. IC Role / Device Role / Timing Role: NC switches isolate hold capacitors from input buffers during acquisition phase, then disconnect during hold. Use Value: 2pC charge injection limits hold-step error to <1LSB in 16-bit systems; 7pF off-capacitance minimizes droop rate. |
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+ | 8-pin µMAX, NC configuration, 4Ω RON @ +5V, –40°C to +85°C | Optimized for low-leakage, rail-to-rail operation in battery-powered systems | Select for designs requiring guaranteed RON flatness (1Ω) and <0.35nA leakage over full temperature range |
| ADG721BRMZ-REEL | 8-pin MSOP, NC configuration, 4.5Ω RON @ +5V, –40°C to +125°C | Higher temperature rating; slightly higher RON and leakage (0.5nA) | Prefer for extended-temperature industrial environments where 125°C operation is mandatory |
Compared with MAX4642EUA+, ADG721BRMZ-REEL offers wider temperature range but trades off leakage current and RON flatness; neither is pin-compatible, requiring layout revision for substitution.
Availability
MAX4642EUA+ is available at Aetrix Electronics and suitable for battery-operated equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply and long-term production continuity.
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) designs precision analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX4642EUA+ belongs to Maxim's high-speed, low-voltage analog switch product line, engineered specifically for rail-to-rail signal integrity and ultra-low power consumption in portable and space-constrained systems.
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 electrical specifications and may cause permanent damage. For reliable performance in battery-powered designs, V+ should be maintained within the +1.8V to +5.5V range, with 0.1µF decoupling at the V+ pin to suppress transients.
Does the MAX4642EUA+ support bidirectional analog signal flow?
Yes, the MAX4642EUA+ supports fully bidirectional analog signal flow between COM and NC terminals. Both sides function identically as signal paths, with identical RON, leakage, and capacitance characteristics. This allows flexible routing-e.g., using COM as input and NC as output or vice versa-without performance degradation, provided the analog voltage remains within the rail-to-rail range (0V to V+).
How does the MAX4642EUA+ achieve low leakage current over temperature?
The MAX4642EUA+ achieves <0.35nA leakage over –40°C to +85°C through optimized CMOS process design and integrated ESD protection diode balancing. Leakage originates primarily from reverse-biased ESD diodes on analog pins; Maxim's layout and transistor sizing minimize thermal drift. Measured data confirms leakage stays below 0.35nA across the full range, making MAX4642EUA+ suitable for high-impedance sensor interfaces where offset stability is critical.
Can the MAX4642EUA+ be used with a 3.3V microcontroller GPIO driving the IN pins?
Yes, the MAX4642EUA+ accepts 3.3V GPIO signals directly on IN1/IN2 pins. At V+ = +3.3V, the logic thresholds are VIH = 2.0V min and VIL = 0.4V max, well within 3.3V logic high/low margins. No level-shifting circuitry is needed. The internal level translators ensure proper gate drive for the analog switches regardless of supply voltage, maintaining full RON and timing specs across the +1.8V to +5.5V range.
What is the thermal performance of the MAX4642EUA+ in the µMAX package?
The MAX4642EUA+ in the 8-pin µMAX package has a junction-to-ambient thermal resistance (θJA) of 110°C/W, with 362mW maximum power dissipation at +70°C ambient. Derating is 4.5mW/°C above +70°C. In typical operation (<0.01µW quiescent power), self-heating is negligible. For high-current analog paths (±20mA continuous), board layout with thermal vias to inner ground planes is recommended to maintain junction temperature below +150°C.
MAX4642EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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+ 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.
MAX4642EUA+ Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
