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Analog Devices Inc./Maxim Integrated MAX4639ETE+T
- Part No.:
- MAX4639ETE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX4639ETE+T.pdf
- Description:
- IC SWITCH SP4T X 2 3.5OHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,044
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Product details
Overview
MAX4639ETE+T from Maxim Integrated is a dual 4:1 CMOS analog multiplexer/demultiplexer designed for low-voltage signal routing in precision data-acquisition and portable 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, and 85MHz -3dB bandwidth, and supports rail-to-rail bidirectional analog signals in battery-powered medical and test equipment.
For engineers reviewing the MAX4639ETE+T datasheet, MAX4639ETE+T pinout, MAX4639ETE+T application, or MAX4639ETE+T equivalent, this page provides verified electrical parameters, package-specific terminal mapping, break-before-make timing validation, leakage current specs at +25°C and over temperature, and confirmed dual 4:1 switching architecture with TTL/CMOS-compatible control logic.
Technical Context
The MAX4639ETE+T implements two independent 4:1 analog muxes (COMA/NO1A–NO4A and COMB/NO1B–NO4B), each selected via 2-bit BCD address inputs (A0, A1) and globally enabled by EN. All channels guarantee break-before-make switching with 1ns minimum tBBM, and support bidirectional signal flow across the full analog range (V− to V+).
It uses BiCMOS process technology to achieve low RON flatness (1Ω max over signal range), tight RON matching (0.4Ω typ between channels), and guaranteed 0.25nA COM/NO off-leakage at +25°C - critical for high-impedance sensor front-ends and low-distortion audio routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | Dual 4:1 analog multiplexer - two independent switch banks, each routing one of four inputs to a dedicated common output (COMA/COMB). |
| On-Resistance (RON) | 3.5Ω at +5V supply - enables minimal signal attenuation and voltage drop in low-level sensor or audio signal paths. |
| Crosstalk | -85dB at 1MHz - prevents coupling between active and inactive channels, essential for multi-channel simultaneous sampling. |
| Off-Isolation | -75dB at 10MHz - ensures high rejection of unwanted signals from disabled channels into the output path. |
| Bandwidth (-3dB) | 85MHz - supports fast-switching applications including video routing and wideband instrumentation signals. |
| Leakage Current | 0.25nA max at +25°C - preserves accuracy in high-impedance circuits (e.g., pH sensors, piezoelectric transducers). |
| Switching Time | tON = 18ns, tOFF = 7ns - enables high-speed channel selection in automated test equipment and real-time signal conditioning. |
Pinout & Package
MAX4639ETE+T is housed in a 16-pin TQFN-EP (4mm × 4mm, 0.5mm pitch) with exposed pad connected to V−. Pin functions are validated per Maxim's official pin configuration diagram for the MAX4639 TQFN variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (NO1A, NO2A, NO3A, NO4A) |
Bidirectional analog inputs - Bank A | Four independent signal sources routed to COMA; compatible with rail-to-rail input voltages from V− to V+. |
| 5, 6, 7, 8 (NO1B, NO2B, NO3B, NO4B) |
Bidirectional analog inputs - Bank B | Four independent signal sources routed to COMB; electrically isolated from Bank A except through shared supply rails. |
| 9, 10 (COMA, COMB) |
Bidirectional analog outputs | Common terminals for respective banks; must be externally terminated or buffered per system impedance requirements. |
| 11, 12 (A0, A1) |
Binary address inputs | Select active channel per bank (00→NO1, 01→NO2, 10→NO3, 11→NO4); TTL/CMOS logic compatible. |
| 13 (EN) |
Active-high enable input | When low, disables both banks - all switches open; simplifies power gating and cascading without external logic. |
| 14 (V−) |
Negative supply rail | Reference for dual-supply operation; exposed pad (EP) must be soldered to V− for thermal and electrical performance. |
| 15 (V+) |
Positive supply rail | Supports +1.8V to +5.5V single supply (V− = GND) or ±2.5V dual supply (V− = −2.5V). |
| 16 (GND) |
Digital/analog ground reference | Low-impedance return path for control logic and substrate bias; requires star grounding near device for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs and outputs spanning V− to V+, enabling direct interface with op-amps, ADCs, and DACs without level-shifting. |
| Guaranteed break-before-make | Minimum 1ns tBBM prevents momentary shorting between channels - critical for avoiding signal glitches in multiplexed sensor arrays. |
| Low RON flatness (1Ω max) | Ensures consistent gain and linearity across full signal swing, reducing harmonic distortion in audio and measurement applications. |
| TTL/CMOS-compatible inputs | Accepts standard logic thresholds (VIH = 2.4V min, VIL = 0.8V max at +5V), eliminating need for level translators in mixed-voltage systems. |
| Low charge injection (13pC) | Minimizes voltage transient on COM nodes during switching - preserves DC accuracy in sample-and-hold and integrator circuits. |
Applications
| Automatic Test Equipment | Portable Medical Monitoring |
|---|---|
|
Use Scenario: High-speed routing of multiple sensor outputs (ECG leads, SpO₂, temperature) to a shared ADC in handheld diagnostic devices. IC Role / Device Role / Timing Role: Dual 4:1 analog multiplexer selecting among eight physiological signals with sub-20ns switching and <1ns break-before-make. Use Value: Enables compact, low-power front-end design with no signal degradation due to RON mismatch or crosstalk-induced cross-talk between ECG and respiration channels. |
Use Scenario: Signal conditioning in battery-powered glucose meters, where microamp-level biosensor currents must be routed without leakage-induced offset error. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating electrode inputs during calibration and measurement phases. Use Value: 0.25nA max off-leakage at +25°C ensures <1µV error in 4.7MΩ transimpedance amplifiers, preserving assay accuracy. |
| Audio Signal Routing | Low-Voltage Data Acquisition |
|
Use Scenario: Selecting between four microphone inputs or line-level sources in a USB-C audio adapter with integrated DAC/ADC. IC Role / Device Role / Timing Role: Bidirectional analog mux supporting full-scale audio signals (±1.5V) with 85MHz bandwidth and -85dB crosstalk. Use Value: Maintains THD < 0.5% across 20Hz–20kHz while preventing audible bleed-through between stereo channels or mic/line inputs. |
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge outputs into a 24-bit delta-sigma ADC in industrial IoT edge nodes. IC Role / Device Role / Timing Role: Precision analog switch providing matched RON (0.4Ω typ), low flatness error (1Ω), and rail-to-rail input range. Use Value: Eliminates gain/offset errors caused by switch nonlinearity, enabling <0.01% system-level measurement accuracy without per-channel calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG609BRUZ | Higher RON (100Ω typ at +5V), lower bandwidth (20MHz), but offers fault protection and higher ESD rating (±4kV HBM). | Better suited for industrial environments with high transient risk; unsuitable for low-distortion, high-bandwidth signal paths. | Select ADG609BRUZ only when robustness against overvoltage events outweighs need for low RON and wide bandwidth. |
| TS5A23159DRCR | Lower supply range (+1.65V to +5.5V), similar RON (0.9Ω typ), but no guaranteed break-before-make and higher crosstalk (-65dB). | Acceptable for cost-sensitive consumer audio routing where timing integrity and channel isolation are secondary. | Choose TS5A23159DRCR for space-constrained, low-voltage designs where guaranteed tBBM and -85dB crosstalk are not required. |
Compared with ADG609BRUZ and TS5A23159DRCR, MAX4639ETE+T uniquely combines 3.5Ω RON, 85MHz bandwidth, guaranteed break-before-make, and -85dB crosstalk - making it optimal for high-fidelity, high-speed, and precision-multiplexed measurement systems.
Availability
MAX4639ETE+T is available at Aetrix Electronics and suitable for automatic test equipment, portable medical monitoring, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4639ETE+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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX4639 belongs to Maxim's low-voltage analog switch product line, engineered for precision signal routing in battery-powered and space-constrained systems where rail-to-rail operation, low leakage, and fast switching are mandatory.
FAQ
What is the maximum supply voltage range supported by the MAX4639ETE+T?
The MAX4639ETE+T supports +1.8V to +5.5V single-supply operation (with V− tied to GND) or ±2.5V dual-supply operation. Absolute maximum ratings specify V+ to V− ≤ +6V; exceeding this risks permanent damage. Operation outside the specified range invalidates guaranteed RON, leakage, and timing specs.
Does the MAX4639ETE+T provide break-before-make switching, and is it guaranteed across temperature?
Yes, the MAX4639ETE+T guarantees break-before-make switching with a minimum tBBM of 1ns over the full operating temperature range (−40°C to +85°C). This is explicitly tested and documented in the Electrical Characteristics table under "Break-Before-Make" for both +5V and ±2.5V supply conditions.
What is the on-resistance match between channels in the MAX4639ETE+T, and why does it matter?
The MAX4639ETE+T guarantees 0.4Ω typical on-resistance match (ΔRON) between any two channels at +25°C, and 0.5Ω max over temperature. Tight RON matching ensures uniform gain and phase response across multiplexed channels - critical for differential measurements, ratiometric sensor interfaces, and multi-channel calibration routines.
Can the MAX4639ETE+T handle rail-to-rail analog signals with a single +3.3V supply?
Yes. With V− = GND and V+ = +3.3V, the MAX4639ETE+T supports analog signals from 0V to +3.3V on all NOx and COMx pins. The datasheet confirms rail-to-rail operation across the full +1.8V to +5.5V single-supply range, with RON flatness maintained within 2.5Ω over that span at +3V.
How is the exposed pad (EP) of the MAX4639ETE+T TQFN package used, and what happens if left unconnected?
The exposed pad (EP) of the MAX4639ETE+T must be soldered to V− for optimal thermal dissipation and electrical performance. Leaving EP unconnected degrades thermal resistance by >50%, increases junction temperature under load, and may cause parametric drift in RON and leakage - violating guaranteed specifications in the datasheet.
MAX4639ETE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SP4T
- 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:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
MAX4639ETE+T FAQ
1.How can I place an order for MAX4639ETE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4639ETE+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 MAX4639ETE+T reliable?
The price and inventory of MAX4639ETE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4639ETE+T is usually 5 days.
3.What payment methods are accepted for MAX4639ETE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4639ETE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4639ETE+T?
MAX4639ETE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4639ETE+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 MAX4639ETE+T?
For technical support, including MAX4639ETE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4639ETE+T requirements.
6.How does Aetrix verify that MAX4639ETE+T is sourced from the original manufacturer or authorized distributors?
All MAX4639ETE+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 MAX4639ETE+T meets industry standards.
7.What is the process for return or replacement of MAX4639ETE+T?
All MAX4639ETE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4639ETE+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 MAX4639ETE+T part is unused and in its original packaging.
Return procedure for MAX4639ETE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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