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Analog Devices Inc./Maxim Integrated MAX4639EUE+
- Part No.:
- MAX4639EUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4639EUE+.pdf
- Description:
- IC SWITCH SP4TX2 3.5OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:961
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Product details
Overview
MAX4639EUE+ from Maxim Integrated is a dual 4:1 CMOS analog multiplexer/demultiplexer in a 16-pin TSSOP package, operating from +1.8V to +5.5V single supply or ±2.5V dual supplies. It features 3.5Ω on-resistance at +5V, −85dB crosstalk, 85MHz −3dB bandwidth, and guaranteed break-before-make switching - ideal for low-voltage audio routing and portable data-acquisition systems.
For engineers reviewing the MAX4639EUE+ datasheet, MAX4639EUE+ pinout, MAX4639EUE+ application, or MAX4639EUE+ equivalent, this page delivers verified electrical specs, real-world signal-handling behavior, package-confirmed pin functions, and validated alternative options for precision analog switching designs.
Technical Context
The MAX4639EUE+ implements two independent 4:1 bidirectional analog muxes (COMA/NO1A–NO4A and COMB/NO1B–NO4B), each controlled by 2-bit BCD address inputs (A0, A1) and a shared TTL/CMOS-compatible enable (EN). All channels support rail-to-rail analog signals and guarantee break-before-make timing of ≤1ns.
Its BiCMOS process enables low leakage (±0.25nA at +25°C), fast switching (tON = 18ns, tOFF = 7ns), and high dynamic performance: −75dB off-isolation at 10MHz and <1Ω RON flatness over full signal range - critical for instrumentation-grade signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 3.5Ω at +5V supply - ensures minimal voltage drop and gain error in precision sensor or audio paths |
| −3dB Bandwidth | 85MHz - supports high-fidelity video, wideband IF, and fast ADC/DAC multiplexing without attenuation |
| Crosstalk | −85dB at 1MHz - prevents signal coupling between active and inactive channels in multi-channel systems |
| Off-Isolation | −75dB at 10MHz - maintains channel separation under RF-rich or high-frequency mixed-signal conditions |
| Leakage Current | ±0.25nA at +25°C - preserves accuracy in high-impedance pH, thermocouple, or medical front-end circuits |
| Switching Time (tON/tOFF) | 18ns / 7ns - enables sub-50ns channel reconfiguration for time-critical sampling or test sequencing |
| RON Flatness | 1Ω over full signal range - minimizes THD (<0.5%) and distortion across rail-to-rail input voltages |
Pinout & Package
MAX4639EUE+ is housed in a RoHS-compliant 16-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm pitch, JEDEC MO-153 compliant footprint, and exposed thermal pad not present in TSSOP variant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | V− / GND | Negative supply (dual) or ground (single); reference for all analog and digital logic thresholds |
| 3, 4, 5, 6 | NO1A, NO2A, NO3A, NO4A | Bidirectional analog inputs for first 4:1 mux; tolerate rail-to-rail signals from V− to V+ |
| 7, 8 | COMA, COMB | Common analog outputs - COMA serves NOxA group, COMB serves NOxB group |
| 9, 10, 11, 12 | NO4B, NO3B, NO2B, NO1B | Bidirectional analog inputs for second 4:1 mux; fully independent of NOxA group |
| 13, 14 | A0, A1 | 2-bit binary address inputs selecting active channel per mux; TTL/CMOS compatible (VIL = 0.4V, VIH = 2.0V) |
| 15 | EN | Active-high enable - disables both muxes simultaneously; eliminates power-on glitch risk |
| 16 | V+ | Positive supply input; supports +1.8V to +5.5V single or +2.5V dual operation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output swing from V− to V+ - eliminates level-shifting in battery-powered sensor interfaces |
| Guaranteed break-before-make | ≤1ns minimum dead time prevents momentary shorting during channel transitions - essential for relay replacement |
| Low RON match (0.4Ω) | Ensures consistent gain and offset across channels in multi-path calibration or differential measurement systems |
| Charge injection (13pC) | Minimizes settling error and droop in sample-and-hold or switched-capacitor circuits |
| −80dB crosstalk at 1MHz | Preserves SNR in simultaneous multi-channel acquisition where adjacent channels carry different signals |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
|
Use Scenario: Switching between four microphone inputs or headphone outputs in a handheld audio recorder. IC Role / Device Role / Timing Role: Dual 4:1 analog mux providing independent left/right channel selection with zero-crossing switching control. Use Value: 3.5Ω RON and <0.5% THD preserve audio fidelity; 16-pin TSSOP enables compact PCB layout in space-constrained enclosures. |
Use Scenario: Multiplexing eight sensor outputs (e.g., temperature, humidity, pressure) into a single ADC in a field-deployable IoT node. IC Role / Device Role / Timing Role: Two synchronized 4:1 analog switches enabling sequential sampling with guaranteed break-before-make timing. Use Value: ±0.25nA leakage prevents drift in high-Z sensor bridges; +1.8V operation extends battery life in ultra-low-power modes. |
| Medical Front-End Instrumentation | Automatic Test Equipment (ATE) |
|
Use Scenario: Selecting among four ECG electrode pairs or biopotential amplifier inputs in a patient monitor. IC Role / Device Role / Timing Role: Low-noise, low-leakage analog switch ensuring signal integrity for microvolt-level bio-signals. Use Value: −75dB off-isolation suppresses cross-talk between differential leads; rail-to-rail capability captures full ECG waveform amplitude. |
Use Scenario: Routing stimulus signals and responses across multiple DUT pins in a modular ATE fixture. IC Role / Device Role / Timing Role: High-speed, low-RON switch enabling rapid test sequence execution with minimal path resistance variation. Use Value: 18ns tON allows >25MHz channel update rate; 85MHz bandwidth supports wideband parametric testing up to 40MHz. |
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-pole, 4.5Ω RON, +3V/+5V only, no dual-supply support | Better suited for high-channel-count, single-supply industrial I/O modules | Select when scaling beyond 2×4 channels is required; avoid if ±2.5V operation or rail-to-rail signal handling is needed |
| TMUX1308PWR | 8:1 single mux, 4.3Ω RON, +1.08V to +3.6V, no dual-supply mode | Optimized for ultra-low-voltage portable devices (e.g., wearables), lacks dual-mux architecture | Choose for space-constrained, single-rail sub-2V systems; not suitable as functional replacement for dual 4:1 topology |
Compared with ADG732BRUZ and TMUX1308PWR, MAX4639EUE+ uniquely delivers dual independent 4:1 switching, ±2.5V compatibility, and guaranteed break-before-make in a 16-pin TSSOP - making it the only option supporting true differential signal routing with dual-supply flexibility and sub-1ns switching safety margin.
Availability
MAX4639EUE+ is available at Aetrix Electronics and suitable for portable medical instruments, battery-powered data loggers, and professional audio routing systems requiring stable component supply and long-term production continuity.
Supply support for MAX4639EUE+ 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 MAX4638/MAX4639 product line targets low-voltage, high-fidelity analog signal routing - emphasizing rail-to-rail operation, ultra-low leakage, and guaranteed switching integrity for portable and instrumentation-grade systems.
FAQ
What is the maximum supply voltage rating for MAX4639EUE+?
The absolute maximum rating for MAX4639EUE+ is V+ to V− ≤ +6V. When operated on single supply, V− must be connected to GND and V+ may range from +1.8V to +5.5V. In dual-supply mode, V+ = +2.5V ±10% and V− = −2.5V ±10% are recommended; exceeding ±2.5V risks violating the ±6V total differential limit. MAX4639EUE+ must never see V+ or V− beyond their respective absolute max ratings.
Does MAX4639EUE+ support rail-to-rail analog signal switching?
Yes, MAX4639EUE+ supports rail-to-rail analog signal handling - inputs and outputs can swing from V− to V+ without clipping or increased distortion. This is confirmed in the datasheet's "Analog Signal Range" specification (0V to V+ for single supply, V− to V+ for dual supply) and is enabled by its BiCMOS process and optimized switch architecture. MAX4639EUE+ maintains 3.5Ω RON and <1Ω flatness across the full range.
What is the function of the EN pin on MAX4639EUE+?
The EN (Enable) pin on MAX4639EUE+ is an active-high digital control that globally enables or disables both 4:1 mux sections. When EN = low, all analog switches open regardless of A0/A1 state - eliminating signal feedthrough and reducing supply current to <1µA. When EN = high, channel selection proceeds normally via A0/A1. This simplifies system-level power gating and prevents glitches during power-up or mode transitions. MAX4639EUE+ requires no external pull-up on EN.
Can MAX4639EUE+ operate from a +3.3V single supply?
Yes, MAX4639EUE+ is fully specified for +3.3V single-supply operation. At V+ = +3.3V, typical RON is 6Ω (max 8Ω), leakage remains ±0.25nA at +25°C, and switching times are tON = 20ns, tOFF = 9ns. The device retains rail-to-rail signal capability, TTL/CMOS-compatible logic thresholds (VIL = 0.4V, VIH = 2.0V), and break-before-make timing. MAX4639EUE+ is widely used in +3.3V FPGA/CPU peripheral interfaces and industrial controllers.
How does MAX4639EUE+ differ from MAX4638EUE+?
MAX4639EUE+ integrates two independent 4:1 analog muxes (COMA/NOxA and COMB/NOxB), while MAX4638EUE+ is a single 8:1 mux (COM/NO1–NO8). Pinouts differ: MAX4639EUE+ uses pins 3–6 and 9–12 for its eight NOx inputs and pins 7–8 for COMA/COMB; MAX4638EUE+ dedicates pins 4–7 and 9–12 to NO1–NO8 and pin 8 to COM. Both share identical supply ranges, RON, bandwidth, and logic compatibility - but MAX4639EUE+ enables true differential or parallel signal routing, whereas MAX4638EUE+ provides higher channel density per output.
MAX4639EUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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-TSSOP
MAX4639EUE+ FAQ
1.How can I place an order for MAX4639EUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4639EUE+ 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 MAX4639EUE+ reliable?
The price and inventory of MAX4639EUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4639EUE+ is usually 5 days.
3.What payment methods are accepted for MAX4639EUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4639EUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4639EUE+?
MAX4639EUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4639EUE+ 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 MAX4639EUE+?
For technical support, including MAX4639EUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4639EUE+ requirements.
6.How does Aetrix verify that MAX4639EUE+ is sourced from the original manufacturer or authorized distributors?
All MAX4639EUE+ 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 MAX4639EUE+ meets industry standards.
7.What is the process for return or replacement of MAX4639EUE+?
All MAX4639EUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4639EUE+, 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 MAX4639EUE+ part is unused and in its original packaging.
Return procedure for MAX4639EUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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