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Analog Devices Inc./Maxim Integrated MAX4639EGE
- Part No.:
- MAX4639EGE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX4639EGE.pdf
- Description:
- IC SW SP4T-NOX2 3.5OHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,806
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Product details
Overview
The MAX4639EGE from Maxim Integrated is a dual 4:1 CMOS analog multiplexer/demultiplexer designed for low-voltage signal routing in precision analog systems. It operates from +1.8V to +5.5V single supply or ±2.5V dual supplies, delivers 3.5Ω on-resistance at +5V, -85dB crosstalk at 1MHz, and 85MHz -3dB bandwidth, enabling high-fidelity audio/video switching and battery-powered data acquisition.
For engineers reviewing the MAX4639EGE datasheet, MAX4639EGE pinout, MAX4639EGE application, or MAX4639EGE equivalent, this device supports rail-to-rail analog signal handling, break-before-make switching, TTL/CMOS-compatible control inputs, and bidirectional operation - critical for medical instrumentation, ATE, and relay replacement designs requiring low leakage (0.25nA at +25°C) and fast switching (tON = 18ns).
Technical Context
The MAX4639EGE implements a dual 4:1 architecture with two independent differential switch banks (COMA/NO1A–NO4A and COMB/NO1B–NO4B), each selected by 2-bit BCD address inputs (A0, A1). Its CMOS transmission-gate design ensures matched on-resistance (≤0.4Ω channel-to-channel) and flatness (≤1Ω over signal range), preserving signal integrity across the full rail-to-rail input span.
Control logic includes an active-low enable (EN) that fully disables both banks simultaneously, guaranteeing all channels are off when disabled. The device features guaranteed break-before-make timing (≥1ns) and supports dual-supply operation with symmetric ±2.5V rails, making it suitable for bipolar signal conditioning without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | Dual 4:1 analog multiplexer - two independent switch banks for differential or parallel signal routing |
| On-Resistance (RON) | 3.5Ω at +5V supply - enables low insertion loss and minimal voltage drop in signal paths |
| Crosstalk | -85dB at 1MHz - prevents interference between active and inactive channels in dense routing |
| -3dB Bandwidth | 85MHz - supports high-speed video, wideband sensor signals, and fast data-acquisition sampling |
| Leakage Current | 0.25nA at +25°C - preserves accuracy in high-impedance sensor front-ends and battery-monitoring circuits |
| Switching Time (tON/tOFF) | 18ns / 7ns - allows sub-50ns channel reconfiguration for real-time test sequencing and dynamic signal routing |
| Supply Range | +1.8V to +5.5V single supply or ±2.5V dual supply - compatible with Li-ion, USB, and industrial 3.3V/5V systems |
Pinout & Package
MAX4639EGE is housed in a 16-pin QFN (4mm × 4mm, 0.5mm pitch) package with exposed thermal pad. Pin 1 is marked by a dot; pins are numbered counterclockwise starting from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | NO1A, NO2A, NO3A, NO4A | Bidirectional analog inputs for first 4:1 bank - connect to sensors, DAC outputs, or signal sources |
| 5, 6, 7, 8 | NO1B, NO2B, NO3B, NO4B | Bidirectional analog inputs for second 4:1 bank - enables parallel or differential routing paths |
| 9, 10 | COMA, COMB | Common analog outputs per bank - drive ADC inputs, amplifiers, or downstream signal chains |
| 11, 12 | A0, A1 | 2-bit binary address inputs - select one of four inputs per bank using standard BCD logic |
| 13 | EN | Active-high enable - asserts both banks simultaneously; low state disconnects all channels |
| 14 | V− | Negative supply rail - tied to GND for single-supply operation or to −2.5V for dual-supply mode |
| 15 | V+ | Positive supply rail - accepts +1.8V to +5.5V; powers internal logic and switch transistors |
| 16 | GND | Ground reference - must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs from V− to V+ - eliminates need for external level shifters in mixed-supply systems |
| Guaranteed RON match | ≤0.4Ω between channels - ensures consistent gain and phase response across multiplexed sensor channels |
| Break-before-make switching | ≥1ns guaranteed dead time - prevents momentary short-circuits during channel transitions |
| TTL/CMOS-compatible inputs | VIH = 2.4V, VIL = 0.8V at +5V - interfaces directly with microcontrollers and FPGAs without level translation |
| Low charge injection | 13pC - minimizes voltage glitches at output during switching, critical for precision ADC front-ends |
Applications
| Automatic Test Equipment | Medical Instrumentation |
|---|---|
Use Scenario: Routing multiple sensor outputs (ECG leads, temperature probes) to a shared ADC in portable diagnostic devices. IC Role / Device Role / Timing Role: Dual-bank analog mux selects one of four differential inputs per bank under microcontroller control; EN synchronizes channel updates. Use Value: Enables compact, low-power multi-parameter monitoring with <0.25nA leakage preserving baseline stability and 85MHz bandwidth supporting high-resolution waveform capture. | Use Scenario: Signal routing in handheld ultrasound beamformers where analog RF paths require low crosstalk and matched impedance. IC Role / Device Role / Timing Role: Dual 4:1 configuration routes phased-array transducer elements to receive chains; rail-to-rail support accommodates bipolar echo signals. Use Value: -85dB crosstalk prevents artifact coupling between adjacent channels, while 3.5Ω RON maintains SNR across the 1–15MHz imaging band. |
| Audio Signal Routing | Battery-Powered Data Acquisition |
Use Scenario: Switching between line-level audio sources (mic, Bluetooth codec, DAC) in smart speaker base stations. IC Role / Device Role / Timing Role: Dual mux handles left/right stereo paths independently; BCD addressing simplifies firmware control via GPIO. Use Value: 18ns tON enables glitch-free source switching during playback; -75dB off-isolation prevents audible bleed-through between inputs. | Use Scenario: Multiplexing 8 thermocouple or strain gauge bridges into a single sigma-delta ADC in wireless sensor nodes. IC Role / Device Role / Timing Role: Two MAX4639EGE devices provide eight 4:1 banks - each bank routes four bridge outputs to excitation/measure cycles. Use Value: 0.25nA leakage prevents offset drift in high-Z Wheatstone bridges; +1.8V operation extends battery life in coin-cell-powered deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG732BRUZ | 32-channel single-ended mux; 4.5Ω RON; 16-bit SPI interface instead of parallel BCD | Requires serial control logic; better for high-channel-count, low-pin-count systems | Select ADG732BRUZ when expanding beyond 8 total inputs or integrating with SPI-based microcontrollers. |
| TS5A3159DCKR | Single 2:1 SPDT; 0.75Ω RON; smaller 6-pin SC70 package; no enable pin | Limited to 2-input selection per device; lacks dual-bank architecture and EN control | Select TS5A3159DCKR only for simple point-to-point switching where size and on-resistance outweigh channel count needs. |
Compared with ADG732BRUZ and TS5A3159DCKR, the MAX4639EGE uniquely provides dual 4:1 functionality with parallel address decoding and a dedicated enable pin - optimizing PCB layout efficiency and real-time channel arbitration in space-constrained, multi-signal systems.
Availability
MAX4639EGE is available at Aetrix Electronics and suitable for automatic test equipment, medical instrumentation, audio signal routing, and battery-powered data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4639EGE 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 demanding industrial, medical, and communications applications.
The MAX4639EGE belongs to Maxim's low-voltage analog switch family, engineered specifically for high-fidelity signal routing in portable, battery-operated, and space-constrained systems where rail-to-rail operation, low leakage, and fast switching are essential.
FAQ
What is the maximum supply voltage rating for MAX4639EGE?
The MAX4639EGE has an absolute maximum V+ to V− rating of +6V. For reliable operation, it supports +1.8V to +5.5V single-supply (V− = GND) or ±2.5V dual-supply configurations. Exceeding +5.5V on V+ or applying more than ±2.5V on dual rails risks permanent damage per the Absolute Maximum Ratings table. Always observe proper power sequencing: V+ first, then V−, then logic inputs.
Does MAX4639EGE support true bidirectional signal flow?
Yes, MAX4639EGE supports fully bidirectional analog signal routing - signals can pass from NOx to COMx or COMx to NOx with identical on-resistance (3.5Ω at +5V) and bandwidth (85MHz). This enables flexible use in transceiver interfaces, loopback diagnostics, and shared analog buses where directionality changes dynamically during operation.
How does the enable (EN) pin function on MAX4639EGE?
The EN pin on MAX4639EGE is active-high: when high, both 4:1 banks operate normally under A0/A1 control; when low, all eight switches open simultaneously, isolating all NOx and COMx terminals. This provides system-level power gating, fault isolation, and synchronized channel disabling - critical for safety-critical medical or ATE applications.
What is the guaranteed on-resistance flatness specification for MAX4639EGE?
MAX4639EGE guarantees ≤1Ω on-resistance flatness (RFLAT(ON)) over the full analog signal range (V− to V+) at +25°C and ≤1.2Ω across the operating temperature range (−40°C to +85°C). This tight flatness ensures minimal distortion and consistent gain across the entire input voltage swing - vital for precision measurement and wide-dynamic-range audio.
Can MAX4639EGE be used with a 3.3V supply?
Yes, MAX4639EGE is fully specified for +3.3V single-supply operation: RON = 6Ω (typ), leakage ≤0.35nA, tON = 20ns (max), and VIH/VIL thresholds adjust to 2.0V/0.4V. Its +1.8V to +5.5V range makes it ideal for modern 3.3V embedded systems, eliminating level shifters while maintaining performance in portable instrumentation and IoT edge nodes.
MAX4639EGE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SP4T - NO
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 3.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- ±2.5V
- Switch Time (Ton, Toff) (Max):
- 18ns, 7ns
- -3db Bandwidth:
- 85MHz
- Charge Injection:
- 13pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -65dB @ 10MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
MAX4639EGE FAQ
1.How can I place an order for MAX4639EGE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4639EGE 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 MAX4639EGE reliable?
The price and inventory of MAX4639EGE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4639EGE is usually 5 days.
3.What payment methods are accepted for MAX4639EGE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4639EGE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4639EGE?
MAX4639EGE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4639EGE 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 MAX4639EGE?
For technical support, including MAX4639EGE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4639EGE requirements.
6.How does Aetrix verify that MAX4639EGE is sourced from the original manufacturer or authorized distributors?
All MAX4639EGE 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 MAX4639EGE meets industry standards.
7.What is the process for return or replacement of MAX4639EGE?
All MAX4639EGE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4639EGE, 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 MAX4639EGE part is unused and in its original packaging.
Return procedure for MAX4639EGE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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