My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4646EUA
- Part No.:
- MAX4646EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4646EUA.pdf
- Description:
- IC SWITCH SPST-NCX1 2.5OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,252
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4646EUA from Maxim Integrated is a normally closed (NC) single-pole, single-throw (SPST) CMOS analog switch optimized for low-distortion signal routing. It delivers 2.5Ω typical on-resistance at +5V supply, 0.4Ω max on-resistance flatness over rail-to-rail signal range, and 8ns turn-off time - enabling high-fidelity audio/video switching and precision data-acquisition paths in battery-powered systems.
For engineers reviewing the MAX4646EUA datasheet, MAX4646EUA pinout, MAX4646EUA application, or MAX4646EUA equivalent, key selection criteria include guaranteed RON ≤2.5Ω at 5V, ±0.25nA max off-leakage at +25°C, TTL/CMOS logic compatibility, -75dB off-isolation at 1MHz, and SOT23-5 package suitability for space-constrained PCB layouts.
Technical Context
The MAX4646EUA implements a complementary MOSFET switch architecture with matched P/N channel pairs to achieve rail-to-rail analog conduction (GND to V+) and minimal signal-dependent RON variation. Its control logic is inverted relative to the MAX4645: logic-low input enables conduction (NC path closed), while logic-high disables it.
Designed for single-supply operation from +1.8V to +5.5V, the device maintains sub-10ns switching dynamics across temperature and load conditions. Charge injection is specified at 5pC (VCOM = 2V, CL = 1.0nF), supporting accurate sample-and-hold and multiplexed ADC front-end applications without significant settling error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RON (typ, +5V) | 2.5Ω - Enables <10mV drop at 10mA signal current; critical for low-gain sensor interfaces |
| RON flatness (max) | 0.4Ω - Ensures <0.1% THD contribution across full 0–V+ signal swing |
| tOFF (typ) | 8ns - Supports >50MHz digital control timing margins in high-speed mux designs |
| Off-isolation @1MHz | -75dB - Suppresses crosstalk below -90dBV in 50Ω video/audio routing |
| Off-leakage (max, +25°C) | ±0.25nA - Limits voltage error to <25µV on 100kΩ source impedance |
| Supply range | +1.8V to +5.5V - Allows direct interface with Li-ion (3.0–4.2V) and 3.3V/5V logic domains |
| THD (typ) | 0.014% - Meets CD-quality audio performance up to 20kHz with 600Ω load |
Pinout & Package
MAX4646EUA is housed in a 5-pin SOT23 package (JEDEC MO-178AA), with pin 1 marked by embossed lettering nearest the package edge. Thermal resistance θJA is 140°C/W; maximum power dissipation at +70°C ambient is 571mW.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Logic control input | Inverted enable: logic-low closes NC path; compatible with 1.8V/3.3V/5V CMOS outputs |
| 2 - NO | Normally open terminal | Unconnected when IN = low; electrically isolated from COM during NC conduction |
| 3 - GND | Analog/digital ground reference | Common return for V+, signal paths, and logic inputs; must be low-impedance |
| 4 - COM | Common analog terminal | Signal hub connected to NC when enabled; supports rail-to-rail (GND to V+) voltage range |
| 5 - V+ | Positive supply | Single power rail for analog and logic sections; bypass with 0.1µF ceramic to GND |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog operation | Supports full-swing signals from GND to V+ without clipping or distortion |
| Low charge injection (5pC) | Minimizes voltage glitch on sampled nodes; enables <16-bit accuracy in S/H circuits |
| TTL/CMOS logic compatibility | Accepts standard logic thresholds (VIL ≤0.8V, VIH ≥2.4V) across entire supply range |
| Guaranteed RON flatness | 0.4Ω max variation ensures consistent gain/attenuation across signal amplitude |
| Ultra-low off-leakage | ±0.25nA max prevents DC error accumulation in high-Z sensor or filter networks |
Applications
| Battery-Powered Instrumentation | Audio Signal Routing |
|---|---|
Use Scenario: Portable multimeter front-end multiplexing of voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: NC switch isolates unused channels during active measurement; fast tOFF enables rapid channel scanning. Use Value: 2.5Ω RON minimizes burden voltage on current shunts; 0.4Ω flatness preserves measurement linearity across full scale. | Use Scenario: Headphone jack detection and left/right channel routing in smartphones. IC Role / Device Role / Timing Role: NC configuration allows default audio path continuity; logic-controlled break enables mute or source switching. Use Value: 0.014% THD meets HD audio specs; -75dB off-isolation prevents audible crosstalk between stereo channels. |
| Low-Voltage Data Acquisition | Sample-and-Hold Circuits |
Use Scenario: Industrial sensor node with multiple thermocouple, RTD, and voltage inputs sharing one ADC. IC Role / Device Role / Timing Role: SPST NC switch selects active sensor; low leakage avoids bias current errors in high-impedance bridges. Use Value: ±0.25nA off-leakage limits offset drift to <25µV on 100kΩ sources; 1.8V operation extends battery life. | Use Scenario: Precision ADC driver stage where hold capacitor charging must be glitch-free. IC Role / Device Role / Timing Role: NC switch connects sample capacitor to input during acquisition; opens during hold phase. Use Value: 5pC charge injection reduces aperture uncertainty; rail-to-rail capability supports full ADC input range utilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4645EUA | Normally open (NO) configuration; identical RON, timing, and leakage specs | Requires active-high enable for default-open behavior; unsuitable where fail-safe closed path is needed | Select MAX4645EUA only when circuit requires default signal interruption until enabled |
| ADG801BRMZ | 0.3Ω RON (typ) at 5V but higher 15ns tON; 0.5nA max off-leakage at +25°C | Better RON for ultra-low-loss paths but slower switching and higher leakage limit dynamic range | Choose ADG801BRMZ only when RON < 0.5Ω is mandatory and 15ns tON is acceptable |
Compared with MAX4645EUA (NO variant) and ADG801BRMZ (lower RON, higher leakage), the MAX4646EUA uniquely balances fail-safe NC operation, 2.5Ω RON, and 8ns tOFF - making it optimal for battery-powered instrumentation requiring default signal continuity and rapid channel isolation.
Availability
MAX4646EUA is available at Aetrix Electronics and suitable for battery-powered instrumentation, audio signal routing, low-voltage data-acquisition systems, sample-and-hold circuits, and relay replacement applications requiring stable component supply and long-term industrial availability.
Supply support for MAX4646EUA 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, automotive, and communications markets.
The MAX4645/MAX4646 product line was designed specifically for low-voltage, low-distortion analog switching in portable and precision measurement systems - emphasizing rail-to-rail operation, nanosecond timing, and ultra-low leakage under 1.8V–5.5V supplies.
FAQ
What is the logic polarity of the MAX4646EUA control input?
The MAX4646EUA features inverted logic: a logic-low voltage (≤0.8V) on the IN pin closes the normally closed (NC) switch path between COM and NC terminals, while a logic-high (≥2.4V) opens it. This behavior is explicitly defined in the truth table and functional diagrams of the MAX4646EUA datasheet and distinguishes it from the MAX4645EUA, which uses non-inverted logic.
Does the MAX4646EUA support rail-to-rail analog signal operation?
Yes, the MAX4646EUA supports true rail-to-rail analog signal operation - meaning signals from GND to V+ (up to +5.5V) can pass through the switch without clipping or distortion. This capability is enabled by its CMOS switch architecture and confirmed in both the General Description and Absolute Maximum Ratings sections of the MAX4646EUA datasheet.
What is the maximum allowable supply voltage for the MAX4646EUA?
The MAX4646EUA has an absolute maximum supply voltage (V+) of +6V, but its recommended operating range is +1.8V to +5.5V. Operation above +5.5V risks exceeding safe internal field strengths and is not characterized; sustained use at +6V violates the recommended conditions and may impact reliability or parametric guarantees for the MAX4646EUA.
Can the MAX4646EUA be used in audio applications requiring low total harmonic distortion?
Yes, the MAX4646EUA delivers 0.014% typical THD with a 600Ω load and 5VP-P signal from 20Hz to 20kHz - meeting CD-quality audio requirements. This performance is directly measured and specified in the Electrical Characteristics table of the MAX4646EUA datasheet, supported by low RON flatness (0.4Ω max) and rail-to-rail conduction.
Is the SOT23-5 package of the MAX4646EUA lead-free and RoHS-compliant?
Yes, the MAX4646EUA in the SOT23-5 package is manufactured with lead-free terminations and complies with RoHS Directive 2011/65/EU. This compliance is documented in Maxim's (now Analog Devices) official packaging and environmental reports for the MAX4646EUA, and the device carries the "Pb-Free" marking per JEDEC standards.
MAX4646EUA 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:
- 1
- On-State Resistance (Max):
- 2.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 15ns, 10ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 17pF, 17pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4646EUA FAQ
1.How can I place an order for MAX4646EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4646EUA 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 MAX4646EUA reliable?
The price and inventory of MAX4646EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4646EUA is usually 5 days.
3.What payment methods are accepted for MAX4646EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4646EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4646EUA?
MAX4646EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4646EUA 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 MAX4646EUA?
For technical support, including MAX4646EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4646EUA requirements.
6.How does Aetrix verify that MAX4646EUA is sourced from the original manufacturer or authorized distributors?
All MAX4646EUA 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 MAX4646EUA meets industry standards.
7.What is the process for return or replacement of MAX4646EUA?
All MAX4646EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4646EUA, 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 MAX4646EUA part is unused and in its original packaging.
Return procedure for MAX4646EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4646EUA 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…
