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Analog Devices Inc./Maxim Integrated MAX4640ESD+
- Part No.:
- MAX4640ESD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4640ESD+.pdf
- Description:
- IC SW SPST-NO/NCX4 70OHM 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,698
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Product details
Overview
The MAX4640ESD+ from Maxim Integrated is a low-voltage, ±15kV ESD-protected, quad SPST CMOS analog switch with two normally open (NO) and two normally closed (NC) channels, 70Ω max on-resistance at +5V, 0.5nA off-leakage at +25°C, and rail-to-rail signal handling - used in audio routing and battery-powered test equipment where mechanical relay replacement is required.
For engineers reviewing the MAX4640ESD+ datasheet, MAX4640ESD+ pinout, MAX4640ESD+ application, or MAX4640ESD+ equivalent, key selection criteria include guaranteed on-resistance matching (0.5Ω typ), break-before-make timing (4ns), ±15kV HBM/IEC air-gap ESD protection, and TTL/CMOS-compatible control logic across +2V to +12V single supply.
Technical Context
The MAX4640ESD+ implements four independent SPST switches using CMOS architecture with integrated bidirectional SCRs on NO/NC pins for ±15kV ESD protection per IEC 1000-4-2 air-gap and contact discharge standards. Its break-before-make operation prevents momentary shorting during channel switching.
Each switch supports rail-to-rail analog signals, exhibits 2Ω typical on-resistance flatness over the full signal range at +5V, and maintains 0.5nA leakage current at +25°C - enabling low-distortion (<0.015% THD) audio and precision data-acquisition paths without external protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (max) | 70Ω at +5V - ensures minimal signal attenuation in audio and sensor signal paths |
| Off-leakage current | 0.5nA at +25°C - preserves accuracy in high-impedance sample-and-hold circuits |
| ESD protection | ±15kV HBM, ±15kV IEC 1000-4-2 air-gap - eliminates need for external TVS diodes on NO/NC lines |
| Supply voltage range | +2V to +12V single supply - supports direct integration into 3.3V and 5V battery-powered systems |
| Bandwidth (-3dB) | >300MHz - enables high-fidelity video and RF signal routing without roll-off |
| THD + noise | 0.015% at 20Hz–20kHz - meets fidelity requirements for professional audio switching |
| Break-before-make time | 4ns - prevents transient shorting between channels in multiplexer configurations |
Pinout & Package
MAX4640ESD+ is housed in a 14-pin SO (Small Outline) package with 1.27mm pitch, JEDEC MS-012AC compliant, 8.65mm × 3.90mm body size, and exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Analog switch 1 normally open terminal - connects to COM1 when IN1 = HIGH |
| 2 | COM1 | Common terminal for switch 1 - carries bidirectional analog signal between NO1 and NC1 |
| 3 | NO2 | Analog switch 2 normally open terminal - connects to COM2 when IN2 = HIGH |
| 4 | COM2 | Common terminal for switch 2 - carries bidirectional analog signal between NO2 and NC2 |
| 5 | IN2 | Digital control input for switch 2 - TTL/CMOS compatible, active HIGH |
| 6 | IN3 | Digital control input for switch 3 - controls NC3/COM3 path |
| 7 | GND | Analog/digital ground reference - must be low-impedance return for ESD SCR clamping |
| 8 | NC3 | Analog switch 3 normally closed terminal - connects to COM3 when IN3 = LOW |
| 9 | COM3 | Common terminal for switch 3 - carries bidirectional analog signal between NO3 and NC3 |
| 10 | COM4 | Common terminal for switch 4 - carries bidirectional analog signal between NO4 and NC4 |
| 11 | NC4 | Analog switch 4 normally closed terminal - connects to COM4 when IN4 = LOW |
| 12 | IN4 | Digital control input for switch 4 - controls NC4/COM4 path |
| 13 | IN1 | Digital control input for switch 1 - controls NO1/COM1 path |
| 14 | V+ | Positive supply input - powers internal CMOS switches and ESD protection SCRs |
Key Features
| Feature | Design Value |
|---|---|
| ±15kV ESD protection on NO/NC pins | Enables direct front-panel connection in handheld test gear without external protection components |
| Break-before-make switching (4ns) | Prevents momentary cross-conduction in dual-path signal routing applications |
| Rail-to-rail analog signal range | Supports full-swing audio and sensor signals without clipping in single-supply systems |
| 0.5Ω typical on-resistance matching | Ensures consistent gain and phase response across all four channels in instrumentation multiplexers |
| 0.5µW quiescent power | Extends battery life in portable DMMs and field-deployable signal analyzers |
Applications
| Audio Signal Routing | Battery-Powered Test Equipment |
|---|---|
Use Scenario: Switching line-level stereo inputs between multiple DACs and headphone amplifiers in portable audio players. IC Role / Device Role / Timing Role: Quad SPST analog switch providing isolated, low-distortion signal path selection under microcontroller GPIO control. Use Value: 0.015% THD and rail-to-rail operation preserve audio fidelity; ±15kV ESD withstand protects against user-handling discharge. | Use Scenario: Multiplexing sensor inputs in handheld multimeters and portable oscilloscope probes. IC Role / Device Role / Timing Role: Low-leakage (0.5nA), low-on-resistance analog switch enabling accurate DC-coupled measurements across ranges. Use Value: 70Ω max RON minimizes loading error; +2V to +12V supply supports both Li-ion and alkaline battery operation. |
| Sample-and-Hold Circuits | Video Signal Switching |
Use Scenario: Sampling analog sensor outputs at precise intervals in industrial data loggers with long-term stability requirements. IC Role / Device Role / Timing Role: Precision analog switch isolating hold capacitor from source impedance during acquisition phase. Use Value: 0.5nA off-leakage prevents capacitor drift over seconds; 2Ω on-resistance flatness ensures linear settling. | Use Scenario: Routing composite video or RGB signals between multiple sources in compact AV switchers. IC Role / Device Role / Timing Role: High-bandwidth (>300MHz) analog switch supporting NTSC/PAL and VGA bandwidths. Use Value: >300MHz -3dB bandwidth avoids luminance/chroma delay skew; low crosstalk (-90dB @1MHz) prevents ghosting. |
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 |
|---|---|---|---|
| MAX4612ESE+ | Same pinout, but only two NO + two NC switches; identical ESD rating and RON, yet rated for -40°C to +70°C only | Limited to commercial-temperature industrial modules, not extended-temp field instruments | Select MAX4612ESE+ only if ambient operating temperature stays below +70°C and SO-14 footprint is mandatory |
| ADG1412BRUZ | 4-channel SPST, ±15kV HBM ESD, but 1.5Ω typical RON mismatch and no IEC 1000-4-2 certification | Suitable for lab-grade equipment with controlled ESD environments, not CE-marked portable devices | Choose ADG1412BRUZ when lower on-capacitance (14pF) is prioritized over IEC-certified ESD robustness |
Compared with MAX4640ESD+, MAX4612ESE+ offers identical functionality at reduced temperature grade, while ADG1412BRUZ trades IEC-certified ESD immunity for lower charge injection - making MAX4640ESD+ the sole choice for CE-compliant handheld test gear requiring guaranteed ±15kV air-gap protection and 0.5Ω matching.
Availability
MAX4640ESD+ is available at Aetrix Electronics and suitable for battery-powered systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply and long-term obsolescence management.
Supply support for MAX4640ESD+ 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 high-reliability ICs for industrial, medical, and communications applications.
The MAX4640 belongs to Maxim's ESD-hardened analog switch product line, engineered specifically for front-end signal routing in portable test equipment and audio interfaces where human-handling ESD events are routine.
FAQ
What is the maximum supply voltage rating for the MAX4640ESD+?
The MAX4640ESD+ has an absolute maximum supply voltage (V+) of +13V referenced to GND, with functional operation guaranteed from +2V to +12V. Operation near +12V requires a minimum 0.1µF bypass capacitor placed close to the V+ pin to suppress ESD-induced supply transients. Exceeding +13V risks permanent damage per the Absolute Maximum Ratings table.
Does the MAX4640ESD+ support rail-to-rail analog signal operation?
Yes, the MAX4640ESD+ supports rail-to-rail analog signal operation - its NO, NC, and COM terminals handle input voltages from GND to V+ without distortion or clipping. This capability is confirmed in the General Description and Electrical Characteristics sections, enabling full-swing audio and sensor signal routing in single-supply systems.
How does the ESD protection in the MAX4640ESD+ work during a discharge event?
The MAX4640ESD+ uses on-chip bidirectional SCRs between NO/NC pins and GND to clamp ±15kV ESD strikes within nanoseconds. Once triggered, the SCR remains latched until current falls below its holding current (110mA typ at +25°C). System design must current-limit external sources connected to NO/NC pins to ensure automatic turn-off after the ESD event.
What is the on-resistance matching specification for the MAX4640ESD+?
The MAX4640ESD+ guarantees on-resistance matching of 0.5Ω (typical) between channels at +5V, defined as RON(MAX) – RON(MIN). This value is measured under V+ = 4.5V, ICOM = 1mA, and VNO/VNC = 3.5V at +25°C. Matching tightens to 0.6Ω (typ) at +3V, ensuring consistent channel gain in precision multiplexers.
Is the MAX4640ESD+ pin-compatible with the 74HC4066?
Yes, the MAX4640ESD+ is explicitly described as a pin-compatible replacement for the industry-standard 74HC4066, sharing identical 14-pin SO package layout and function mapping. However, unlike the 74HC4066, the MAX4640ESD+ adds ±15kV ESD protection, rail-to-rail operation, and guaranteed on-resistance specs - requiring no PCB changes for drop-in upgrade.
MAX4640ESD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 70Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 150ns, 80ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX4640ESD+ FAQ
1.How can I place an order for MAX4640ESD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4640ESD+ 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 MAX4640ESD+ reliable?
The price and inventory of MAX4640ESD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4640ESD+ is usually 5 days.
3.What payment methods are accepted for MAX4640ESD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4640ESD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4640ESD+?
MAX4640ESD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4640ESD+ 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 MAX4640ESD+?
For technical support, including MAX4640ESD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4640ESD+ requirements.
6.How does Aetrix verify that MAX4640ESD+ is sourced from the original manufacturer or authorized distributors?
All MAX4640ESD+ 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 MAX4640ESD+ meets industry standards.
7.What is the process for return or replacement of MAX4640ESD+?
All MAX4640ESD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4640ESD+, 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 MAX4640ESD+ part is unused and in its original packaging.
Return procedure for MAX4640ESD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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