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Analog Devices Inc./Maxim Integrated MAX4640EPD
- Part No.:
- MAX4640EPD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4640EPD.pdf
- Description:
- IC SWITCH SPSTX4 70OHM 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:597
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Product details
Overview
The MAX4640EPD 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-designed for audio routing and battery-powered test equipment where mechanical relay replacement is required.
For engineers reviewing the MAX4640EPD datasheet, MAX4640EPD pinout, MAX4640EPD application, or MAX4640EPD 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 compatibility with +2V to +12V single-supply operation.
Technical Context
The MAX4640EPD implements four independent bilateral SPST switches using CMOS architecture with integrated bidirectional SCRs on NO/NC pins for ±15kV ESD protection. Its control logic accepts TTL/CMOS-compatible inputs (VIH = 2.4V min at +5V, VIL = 0.8V max), enabling direct interfacing with microcontrollers and FPGAs without level-shifting.
Each channel features matched on-resistance (0.5Ω typ at +5V), flat on-resistance (2Ω typ over signal range), and low charge injection (5pC), ensuring minimal signal distortion in precision analog paths. The device guarantees operation across -40°C to +85°C and supports break-before-make switching only in the MAX4640 variant-critical for preventing momentary shorts in multiplexer configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 70Ω at +5V supply - ensures minimal voltage drop and power loss in signal paths up to ±5V. |
| Off-Leakage Current | ±0.5nA at TA = +25°C - preserves signal integrity in high-impedance sample-and-hold or sensor interfaces. |
| ESD Protection | ±15kV HBM, ±15kV IEC 1000-4-2 air-gap, ±8kV contact - eliminates need for external TVS diodes on NO/NC lines. |
| Supply Range | +2V to +12V single supply - enables direct use in 3.3V, 5V, and 9V battery systems without regulation. |
| Bandwidth (-3dB) | >300MHz - supports high-fidelity video, RF sampling, and fast digital signal routing. |
| Break-Before-Make Time | 4ns (MAX4640 only) - prevents transient short-circuits during channel switching in multiplexed analog front-ends. |
| Total Harmonic Distortion | 0.015% at 20Hz–20kHz - meets fidelity requirements for professional audio signal switching. |
Pinout & Package
MAX4640EPD uses a 14-pin plastic DIP package (0.300" wide), compatible with through-hole prototyping and industrial PCB assembly. Pin spacing is 0.100", body width 0.300", and lead finish is matte tin.
| 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 signals 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; supports rail-to-rail signal swing from GND to V+. |
| 5 | IN2 | Digital control input for Switch 2; TTL/CMOS-compatible, drives internal gate of Switch 2. |
| 6 | IN3 | Digital control input for Switch 3; active-HIGH logic controls NC3/COM3 path. |
| 7 | GND | Ground reference for logic and analog sections; must be low-impedance for ESD current return. |
| 8 | NC3 | Analog Switch 3 – Normally Closed terminal; disconnects from COM3 when IN3 = HIGH. |
| 9 | COM3 | Common terminal for Switch 3; shares same voltage domain as V+ and GND. |
| 10 | COM4 | Common terminal for Switch 4; electrically isolated per channel but shares GND/V+ rails. |
| 11 | NC4 | Analog Switch 4 – Normally Closed terminal; complements NO4 in dual-path configurations. |
| 12 | IN4 | Digital control input for Switch 4; enables independent control of all four SPST channels. |
| 13 | IN1 | Digital control input for Switch 1; synchronizes NO1/NC1 state with system logic timing. |
| 14 | V+ | Positive supply input; bypass with 0.1µF ceramic capacitor near pin for stable ESD immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional SCR-based ESD protection | ±15kV HBM and air-gap discharge tolerance on NO/NC pins without latchup or degradation. |
| Guaranteed on-resistance matching | 0.5Ω typical difference between channels at +5V - enables precise gain-matching in instrumentation multiplexers. |
| Rail-to-rail analog signal handling | Full-swing operation from GND to V+ - supports unipolar/bipolar signals without clipping in audio or sensor interfaces. |
| Low distortion & high bandwidth | 0.015% THD + noise and >300MHz -3dB bandwidth - suitable for HD audio and fast data-acquisition front-ends. |
| Break-before-make timing | 4ns guaranteed transition gap - prevents cross-conduction in dual-path signal routing applications. |
Applications
| Audio Signal Routing | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Switching line-level stereo signals between multiple DAC outputs and headphone amplifiers in portable audio players. IC Role / Device Role / Timing Role: Quad SPST analog switch providing independent NO/NC control per channel to route left/right differential pairs without crosstalk. Use Value: 0.015% THD and >300MHz bandwidth preserve audio fidelity; ±15kV ESD protection withstands repeated user handling. | Use Scenario: Multiplexing sensor excitation and response signals in benchtop multimeters and LCR meters. IC Role / Device Role / Timing Role: Low-leakage (0.5nA), rail-to-rail analog switch enabling accurate DC/low-frequency measurements across multiple test fixtures. Use Value: 70Ω max on-resistance minimizes measurement error; break-before-make prevents shorting during reconfiguration. |
| Battery-Powered Data Acquisition | Relay Replacement in Industrial Control |
Use Scenario: Selecting analog inputs from thermocouples, RTDs, and strain gauges in handheld environmental monitors. IC Role / Device Role / Timing Role: Low-power (1µA supply current), +2V to +12V operable analog switch supporting direct connection to 3.7V Li-ion batteries. Use Value: 0.5nA leakage avoids bias errors in high-Z sensor bridges; small DIP footprint simplifies compact PCB layout. | Use Scenario: Replacing electromechanical relays in PLC I/O modules for controlling 24V DC solenoids and indicator lamps. IC Role / Device Role / Timing Role: Solid-state SPST switch delivering faster switching (150ns tON), longer lifetime (>10⁹ cycles), and silent operation vs. mechanical relays. Use Value: Eliminates coil drive circuitry and contact bounce; ±15kV ESD robustness handles industrial EMI environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4612EUD+ | 14-pin TSSOP; 100Ω max RON at +5V; no break-before-make; ±15kV ESD on NO/NC only. | Suitable for space-constrained PCBs but lacks guaranteed B-B-M timing and has higher on-resistance. | Select MAX4612EUD+ only if board area is critical and B-B-M is not required. |
| ADG1412BRUZ | 16-pin TSSOP; 1.8Ω max RON at +5V; ±20kV HBM ESD; requires dual ±15V or +12V/+5V supplies. | Better performance for precision instrumentation, but incompatible single-supply operation and larger footprint. | Choose ADG1412BRUZ when ultra-low on-resistance and higher ESD rating justify dual-supply complexity. |
Compared with MAX4612EUD+ and ADG1412BRUZ, the MAX4640EPD uniquely balances through-hole manufacturability, guaranteed break-before-make, ±15kV ESD robustness, and single +2V to +12V operation-making it optimal for cost-sensitive, reliability-critical industrial and portable designs.
Availability
MAX4640EPD is available at Aetrix Electronics and suitable for battery-powered systems, audio signal routing, and automated test equipment requiring stable component supply with long-term industrial lifecycle support.
Supply support for MAX4640EPD 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 MAX4620/MAX4630/MAX4640 family was designed specifically for ESD-hardened, low-voltage analog signal routing in portable and test equipment-emphasizing rail-to-rail operation, low leakage, and mechanical relay replacement.
FAQ
What is the maximum supply voltage for the MAX4640EPD?
The MAX4640EPD supports a single-supply voltage range from +2V to +12V, with an absolute maximum rating of +13V referenced to GND. Operation at +12V is fully specified and validated; proper decoupling with a 0.1µF ceramic capacitor at the V+ pin is required to maintain ESD immunity and stability.
Does the MAX4640EPD require external ESD protection components?
No, the MAX4640EPD does not require external ESD protection on its NO or NC pins. It integrates bidirectional SCRs that provide ±15kV human-body-model and ±15kV IEC 1000-4-2 air-gap ESD protection-fully tested and guaranteed without additional circuitry.
How does the break-before-make feature work in the MAX4640EPD?
The MAX4640EPD guarantees a 4ns break-before-make timing between complementary NO and NC paths within each switch pair (e.g., NO1/NC1). This prevents momentary short-circuits during state transitions and is intrinsic to the MAX4640 variant-unlike the MAX4620 or MAX4630, which lack this feature.
What is the on-resistance matching specification for the MAX4640EPD?
The MAX4640EPD guarantees on-resistance matching of 0.5Ω typical (ΔRON = RONMAX − RONMIN) at +5V and +25°C, with a maximum of 3Ω across temperature. This tight matching ensures consistent gain and attenuation across channels in precision multiplexer and instrumentation applications.
Can the MAX4640EPD handle bipolar analog signals?
Yes, the MAX4640EPD supports rail-to-rail analog signals from GND to V+, but it does not support true bipolar operation (e.g., ±5V) without external level-shifting. For signals extending below GND, a negative supply or AC-coupled configuration is required-its architecture is optimized for unipolar, single-supply systems.
MAX4640EPD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - Open/Closed
- 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:
- -70dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
MAX4640EPD FAQ
1.How can I place an order for MAX4640EPD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4640EPD 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 MAX4640EPD reliable?
The price and inventory of MAX4640EPD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4640EPD is usually 5 days.
3.What payment methods are accepted for MAX4640EPD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4640EPD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4640EPD?
MAX4640EPD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4640EPD 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 MAX4640EPD?
For technical support, including MAX4640EPD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4640EPD requirements.
6.How does Aetrix verify that MAX4640EPD is sourced from the original manufacturer or authorized distributors?
All MAX4640EPD 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 MAX4640EPD meets industry standards.
7.What is the process for return or replacement of MAX4640EPD?
All MAX4640EPD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4640EPD, 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 MAX4640EPD part is unused and in its original packaging.
Return procedure for MAX4640EPD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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