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Analog Devices Inc./Maxim Integrated MAX4640EUD
- Part No.:
- MAX4640EUD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4640EUD.pdf
- Description:
- IC SWITCH SPSTX4 70OHM 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,248
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Product details
Overview
MAX4640EUD from Maxim Integrated is a quad SPST CMOS analog switch with two normally open (NO) and two normally closed (NC) channels, designed for rail-to-rail signal routing in low-voltage systems. It operates from +2V to +12V single supply, delivers 70Ω max on-resistance at 5V, 0.5nA off-leakage at +25°C, and supports ±15kV HBM ESD protection on NO/NC pins - ideal for audio signal switching and battery-powered test equipment.
For engineers reviewing the MAX4640EUD datasheet, MAX4640EUD pinout, MAX4640EUD application, or MAX4640EUD equivalent, key selection criteria include guaranteed on-resistance matching (0.5Ω typ), break-before-make timing (4ns), -3dB bandwidth >300MHz, and TSSOP-14 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4640EUD implements four independent bilateral CMOS SPST switches using SCR-based ESD protection circuitry on NO/NC terminals, enabling ±15kV air-gap and contact discharge immunity without latchup. Its control logic accepts TTL/CMOS-compatible inputs (VIH = 2.4V min at 5V, VIH = 2.0V min at 3V), and internal diode+SCR clamping ensures robust Beyond-the-Rails™ operation.
Unlike the MAX4620 (four NO) and MAX4630 (four NC), the MAX4640EUD integrates mixed NO/NC topology per channel pair, supporting true break-before-make sequencing (4ns typical) critical for preventing signal shorting during reconfiguration in sample-and-hold or relay-replacement circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2V to +12V single supply - enables direct integration into 3.3V and 5V systems without level shifters. |
| On-Resistance (max) | 70Ω at V+ = 5V - ensures minimal signal attenuation and THD of 0.015% in 600Ω audio paths. |
| On-Resistance Matching | 0.5Ω (typ) at 5V - guarantees consistent gain/attenuation across channels in multi-path routing. |
| Off-Leakage Current | ±0.5nA at TA = +25°C - preserves accuracy in high-impedance sensor or precision sample-and-hold nodes. |
| -3dB Bandwidth | >300MHz - supports video, communications, and fast data-acquisition signals without roll-off. |
| ESD Protection | ±15kV HBM, ±15kV IEC 1000-4-2 air-gap, ±8kV contact - eliminates need for external TVS diodes in front-panel interfaces. |
| Break-Before-Make Time | 4ns (typ) - prevents momentary short-circuit between NO and NC paths during state transitions. |
Pinout & Package
MAX4640EUD is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch, optimized for high-density PCB layouts and automated assembly. Thermal performance supports 571mW continuous power dissipation at +70°C ambient.
| 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; bidirectional signal path shared by 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 analog signals up to V+. |
| 5 | IN2 | Digital control input for Switch 2; TTL/CMOS-compatible, drives NO2/NC2 state. |
| 6 | IN3 | Digital control input for Switch 3; active-HIGH logic controls NC3/COM3 connection. |
| 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 signal path with NC3 and (when configured) NO3. |
| 10 | COM4 | Common terminal for Switch 4; electrically isolated from other COM pins for independent channel use. |
| 11 | NC4 | Analog Switch 4 – Normally Closed terminal; opens when IN4 = HIGH, enabling break-before-make. |
| 12 | IN4 | Digital control input for Switch 4; synchronizes NC4 disconnection before NO4 closure. |
| 13 | IN1 | Digital control input for Switch 1; controls NO1 closure and NC1 opening simultaneously. |
| 14 | V+ | Positive supply input; bypass with 0.1µF capacitor to GND for stable ESD transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Bilateral rail-to-rail switching | Supports analog signals from GND to V+ without distortion or clipping - essential for audio and sensor interfaces. |
| Guaranteed on-resistance flatness | 2Ω (typ) at 5V - maintains consistent insertion loss across full signal range (0V to V+). |
| Matched on-resistance between channels | 0.5Ω (typ) at 5V - enables precise channel-to-channel gain tracking in multi-channel instrumentation. |
| Integrated SCR-based ESD protection | ±15kV HBM on NO/NC pins with 3V holding voltage - avoids latchup and eliminates external protection components. |
| Low charge injection | 5pC - minimizes voltage glitch in sample-and-hold and switched-capacitor circuits. |
Applications
| Audio Signal Routing | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Selecting between multiple microphone or line-level inputs in portable audio mixers or USB audio interfaces. IC Role / Device Role / Timing Role: Quad SPST switch providing low-distortion, low-crosstalk signal path selection with break-before-make to prevent pop/click artifacts. Use Value: 0.015% THD and -70dB crosstalk at 10MHz ensure studio-grade fidelity without external buffering. | Use Scenario: Routing calibration signals and DUT connections in benchtop ATE systems with hot-pluggable fixtures. IC Role / Device Role / Timing Role: Relay replacement with 4ns break-before-make timing and ±15kV ESD tolerance on front-panel connectors. Use Value: Eliminates mechanical wear, reduces PCB area by >70% vs. equivalent reed relays, and withstands repeated human-hand ESD events. |
| Low-Voltage Data Acquisition | Sample-and-Hold Circuits |
Use Scenario: Multiplexing thermocouple, RTD, or bridge sensor outputs into a single ADC channel in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision analog switch with 0.5nA leakage and 70Ω RON enabling <16-bit effective resolution at 3.3V supply. Use Value: Leakage-induced offset error <1µV in 10kΩ source impedance configurations, preserving measurement integrity. | Use Scenario: Capturing fast transient waveforms in oscilloscope front-ends or power quality analyzers. IC Role / Device Role / Timing Role: Hold capacitor charging switch with 5pC charge injection and >300MHz bandwidth. Use Value: Aperture uncertainty <1ps enables accurate sampling of 100MHz+ signals without pedestal error. |
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 |
|---|---|---|---|
| MAX4612EUD | Same 14-pin TSSOP package; dual NO/dual NC topology but rated only to +85°C and lacks guaranteed 0.5nA leakage spec. | Lower-cost option where ESD rating (±8kV contact) and leakage tolerance (>1nA) are acceptable. | Select MAX4612EUD only if system-level ESD testing confirms ±8kV sufficiency and leakage budget allows >1nA. |
| ADG1412YRUZ | 4-channel, NO-only configuration in 16-pin TSSOP; 0.5Ω RON matching but no NC functionality or break-before-make timing. | Suitable for unidirectional signal routing where NC path redundancy is unnecessary. | Choose ADG1412YRUZ when replacing MAX4640EUD in NO-only topologies and board layout accommodates 16-pin footprint. |
Compared with MAX4640EUD, MAX4612EUD trades ESD robustness and leakage performance for cost, while ADG1412YRUZ offers tighter RON matching but sacrifices NC functionality and break-before-make capability - making MAX4640EUD uniquely suited for mixed-path, high-reliability routing.
Availability
MAX4640EUD 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 industrial lifecycle support.
Supply support for MAX4640EUD 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, automotive, and communications markets.
The MAX4620/MAX4630/MAX4640 family targets high-reliability analog signal routing in ESD-prone environments, emphasizing rail-to-rail performance, ultra-low leakage, and integrated protection for front-end interface applications.
FAQ
What is the maximum supply voltage rating for MAX4640EUD?
The MAX4640EUD has an absolute maximum supply voltage (V+ to GND) of +13V, with guaranteed functional operation from +2V to +12V. Operation near 12V requires a 0.1µF bypass capacitor placed directly between V+ and GND at the device pins to suppress ESD-induced supply transients and maintain SCR holding current stability.
Does MAX4640EUD support rail-to-rail analog signal switching?
Yes, MAX4640EUD supports true rail-to-rail analog signal switching - its CMOS architecture allows input signals from GND to V+ on all NO, NC, and COM terminals without distortion or clipping. This is confirmed in the datasheet's "Input Voltage Range" specification (VCOM_/VNO_/VNC_ = 0 to V+) and verified by THD measurements of 0.015% across the full range.
How does the break-before-make feature work in MAX4640EUD?
The MAX4640EUD implements hardware-enforced break-before-make timing of 4ns (typical) between NO and NC paths within each switch pair. When an input control signal transitions, the NC path opens before the NO path closes - preventing momentary short-circuits. This behavior is intrinsic to the MAX4640EUD's internal logic design and does not require external timing circuitry.
What is the on-resistance matching specification for MAX4640EUD?
MAX4640EUD guarantees on-resistance matching of 0.5Ω (typical) between channels at V+ = 5V and TA = +25°C, with a maximum of 3Ω over temperature (-40°C to +85°C). This parameter is measured as ∆RON = RON(MAX) − RON(MIN) under specified load conditions (ICOM_ = 1mA, VNO_/VNC_ = 3.5V) and is critical for gain-matched multi-channel signal paths.
Can MAX4640EUD replace the 74HC4066 in existing designs?
Yes, MAX4640EUD is explicitly designed as a pin-compatible replacement for the 74HC4066, sharing identical 14-pin TSSOP/SO/DIP footprints and logic-level compatibility. However, unlike the 74HC4066, MAX4640EUD adds ±15kV ESD protection, lower on-resistance (70Ω vs. ~100Ω), and guaranteed leakage (0.5nA vs. unspecified), requiring no layout changes but delivering enhanced reliability.
MAX4640EUD 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:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MAX4640EUD FAQ
1.How can I place an order for MAX4640EUD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4640EUD 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 MAX4640EUD reliable?
The price and inventory of MAX4640EUD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4640EUD is usually 5 days.
3.What payment methods are accepted for MAX4640EUD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4640EUD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4640EUD?
MAX4640EUD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4640EUD 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 MAX4640EUD?
For technical support, including MAX4640EUD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4640EUD requirements.
6.How does Aetrix verify that MAX4640EUD is sourced from the original manufacturer or authorized distributors?
All MAX4640EUD 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 MAX4640EUD meets industry standards.
7.What is the process for return or replacement of MAX4640EUD?
All MAX4640EUD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4640EUD, 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 MAX4640EUD part is unused and in its original packaging.
Return procedure for MAX4640EUD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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