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Analog Devices Inc./Maxim Integrated MAX4640ESD+T
- Part No.:
- MAX4640ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4640ESD+T.pdf
- Description:
- IC SW SPST-NO/NCX4 70OHM 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,078
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Product details
Overview
MAX4640ESD+T from Maxim Integrated is a quad, single-pole/single-throw (SPST), CMOS analog switch with two normally open (NO) and two normally closed (NC) channels, ±15kV ESD protection on NO/NC pins, 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+T datasheet, MAX4640ESD+T pinout, MAX4640ESD+T application, or MAX4640ESD+T equivalent, this page delivers verified electrical specs, SO-14 package mapping, break-before-make timing, ESD SCR behavior, and real-world analog switching trade-offs for low-distortion, low-power signal path design.
Technical Context
The MAX4640ESD+T implements four independent SPST switches using CMOS architecture with integrated bidirectional SCRs on NO/NC terminals for ±15kV HBM and IEC 1000-4-2 air-gap discharge protection. Each channel features TTL/CMOS-compatible digital control inputs and supports rail-to-rail analog signals from 0V to V+ (2V–12V).
Unlike the MAX4620 (four NO) and MAX4630 (four NC), the MAX4640ESD+T provides mixed topology: NO1/NO2 and NC3/NC4, enabling simultaneous signal pass-through and default-path routing. Its break-before-make timing is guaranteed ≤4ns at +25°C, preventing momentary shorting during state transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 70Ω at +5V supply - ensures minimal voltage drop and power loss in precision analog paths |
| Off-Leakage Current | ±0.5nA at +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 |
| -3dB Bandwidth | >300MHz - supports video, RF sampling, and fast data-acquisition front-ends without attenuation |
| Total Harmonic Distortion | 0.015% at 20Hz–20kHz - meets fidelity requirements for professional audio signal routing |
| Supply Range | +2V to +12V single supply - enables direct integration into 3.3V, 5V, and 9V battery-powered systems |
| Break-Before-Make Time | ≤4ns (MAX4640 only) - prevents cross-conduction in dual-path switching applications like mux/demux |
Pinout & Package
MAX4640ESD+T is housed in a 14-pin SO (Small Outline) package, 150 mil width, JEDEC MS-012 compliant, with standard SOIC thermal and mounting characteristics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Analog Switch 1 – Normally Open | Open-circuit when IN1 = LOW; connects to COM1 when IN1 = HIGH |
| 2 (COM1) | Analog Switch 1 – Common | Signal path junction for NO1 and NC1; carries routed analog signal |
| 3 (NO2) | Analog Switch 2 – Normally Open | Open-circuit when IN2 = LOW; connects to COM2 when IN2 = HIGH |
| 4 (COM2) | Analog Switch 2 – Common | Signal path junction for NO2 and NC2 |
| 5 (IN2) | Digital Control Input 2 | TTL/CMOS-compatible logic input controlling NO2/NC2 state |
| 6 (IN3) | Digital Control Input 3 | TTL/CMOS-compatible logic input controlling NO3/NC3 state (NC3 active when IN3 = LOW) |
| 7 (GND) | Ground Reference | Return path for supply current and logic reference; must be low-impedance |
| 8 (NC3) | Analog Switch 3 – Normally Closed | Closed-circuit when IN3 = LOW; opens when IN3 = HIGH |
| 9 (COM3) | Analog Switch 3 – Common | Signal path junction for NO3 and NC3 |
| 10 (COM4) | Analog Switch 4 – Common | Signal path junction for NO4 and NC4 |
| 11 (NC4) | Analog Switch 4 – Normally Closed | Closed-circuit when IN4 = LOW; opens when IN4 = HIGH |
| 12 (IN4) | Digital Control Input 4 | TTL/CMOS-compatible logic input controlling NO4/NC4 state |
| 13 (IN1) | Digital Control Input 1 | TTL/CMOS-compatible logic input controlling NO1/NC1 state |
| 14 (V+) | Positive Supply Voltage Input | Single supply rail (2V–12V); powers analog switch core and logic interface |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional SCR-based ESD protection | Enables robust ±15kV HBM/IEC 1000-4-2 immunity without latchup, eliminating external protection components |
| Mixed NO/NC topology | Supports fail-safe default routing (NC paths) and active signal selection (NO paths) in same device |
| Guaranteed on-resistance matching | 0.5Ω typical mismatch between channels at +5V - critical for matched gain/attenuation in differential or multi-channel systems |
| Rail-to-rail analog signal range | Accepts input signals from GND to V+, enabling full utilization of ADC/DAC dynamic range |
| 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 and USB-C audio adapters. IC Role / Device Role / Timing Role: Quad SPST analog switch providing low-distortion, low-crosstalk signal path selection under microcontroller control. Use Value: 0.015% THD and >300MHz bandwidth preserve audio fidelity; ±15kV ESD protects exposed jacks from user-handling events. | Use Scenario: Multiplexing sensor outputs or stimulus signals in benchtop test fixtures with hot-pluggable probes. IC Role / Device Role / Timing Role: Relay-replacement switch delivering nanosecond-scale break-before-make timing and no contact wear. Use Value: 70Ω on-resistance and 0.5nA leakage ensure measurement accuracy; SO-14 footprint reduces PCB area vs. DIP relays. |
| Battery-Powered Data Acquisition | Sample-and-Hold Circuits |
Use Scenario: Channel selection in handheld multimeters or IoT edge sensors operating from coin-cell or Li-ion sources. IC Role / Device Role / Timing Role: Low-quiescent-power analog switch enabling rail-to-rail signal routing with 1µA supply current at +3.3V. Use Value: +2V to +12V operation supports direct use with 2.7V–3.6V or 4.5V–5.5V supplies; 0.5nA leakage avoids capacitor discharge errors. | Use Scenario: Controlling hold capacitor charging in precision ADC front-ends for medical or industrial instrumentation. IC Role / Device Role / Timing Role: Low-charge-injection (5pC), low-on-resistance switch isolating amplifier output from hold capacitor. Use Value: 5pC charge injection limits voltage step error; matched RON minimizes settling time mismatch across channels. |
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 |
|---|---|---|---|
| MAX4640EUD+ | TSSOP-14 package; 0.65mm pitch; lower thermal resistance than SO-14 | Better suited for space-constrained PCBs requiring fine-pitch assembly | Select MAX4640EUD+ when board area is limited and reflow compatibility with TSSOP is confirmed |
| ADG1412BRUZ | 4-channel, 12V-rated, 1.8Ω typical RON, but only NO configuration; no NC channels | Lacks default-path capability; requires external pull-up/down for fail-safe behavior | Choose ADG1412BRUZ only if pure NO topology suffices and lower on-resistance justifies higher cost and missing NC functionality |
Compared with MAX4640ESD+T, MAX4640EUD+ offers identical electrical performance in a smaller footprint, while ADG1412BRUZ trades NC functionality for lower on-resistance and higher voltage rating - making MAX4640ESD+T uniquely suitable for mixed-path, ESD-heavy, SO-packaged designs.
Availability
MAX4640ESD+T 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 availability.
Supply support for MAX4640ESD+T 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 to replace mechanical relays and legacy 74HC4066 switches in ESD-prone, low-power, rail-to-rail analog signal routing applications - emphasizing robustness, precision, and compact packaging.
FAQ
What is the maximum supply voltage rating for MAX4640ESD+T?
The MAX4640ESD+T has an absolute maximum V+ rating of +13V referenced to GND, with guaranteed operation from +2V to +12V. Operation near +12V requires a minimum 0.1µF bypass capacitor placed close to the V+ pin to suppress supply transients induced by ESD events or switching noise.
Does MAX4640ESD+T support rail-to-rail analog signals?
Yes, the MAX4640ESD+T supports rail-to-rail analog signals - meaning it can pass voltages from GND (0V) up to the positive supply rail (V+) without clipping or distortion. This capability is enabled by its CMOS switch architecture and is specified across the full +2V to +12V supply range.
How does the ESD protection in MAX4640ESD+T work without latchup?
The MAX4640ESD+T uses on-chip bidirectional silicon-controlled rectifiers (SCRs) between NO/NC pins and GND to shunt ±15kV ESD strikes within nanoseconds. Once triggered, the SCR remains latched until current falls below its holding threshold (~110mA at +25°C). Proper system-level current limiting on NO/NC lines ensures automatic turn-off after the event, preventing latchup.
What is the function of pins 8 (NC3) and 11 (NC4) on MAX4640ESD+T?
Pins 8 and 11 are the normally closed (NC) terminals for switches 3 and 4, respectively. When their corresponding control inputs (IN3 and IN4) are LOW, NC3 and NC4 are conductive to their common pins (COM3 and COM4); when IN3 or IN4 goes HIGH, the NC path opens. This allows MAX4640ESD+T to provide both active-selection (NO) and default-path (NC) routing in one device.
Is MAX4640ESD+T pin-compatible with the 74HC4066?
Yes, the MAX4640ESD+T is pin-compatible with the industry-standard 74HC4066 in SO-14 packaging, sharing identical pin assignments for V+, GND, IN1–IN4, COM1–COM4, and NO1/NO2/NC3/NC4. However, unlike the 74HC4066, MAX4640ESD+T adds ±15kV ESD protection, lower on-resistance, and guaranteed break-before-make timing.
MAX4640ESD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX4640ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4640ESD+T 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+T reliable?
The price and inventory of MAX4640ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4640ESD+T is usually 5 days.
3.What payment methods are accepted for MAX4640ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4640ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4640ESD+T?
MAX4640ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4640ESD+T 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+T?
For technical support, including MAX4640ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4640ESD+T requirements.
6.How does Aetrix verify that MAX4640ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX4640ESD+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX4640ESD+T?
All MAX4640ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4640ESD+T, 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+T part is unused and in its original packaging.
Return procedure for MAX4640ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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