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Analog Devices Inc./Maxim Integrated MAX4638ESE+
- Part No.:
- MAX4638ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4638ESE+.pdf
- Description:
- IC MUX 8:1 3.5OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,248
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Product details
Overview
MAX4638ESE+ from Maxim Integrated is a single 8:1 CMOS analog multiplexer designed for low-voltage signal routing in precision data-acquisition and portable instrumentation. It delivers 3.5Ω on-resistance at +5V supply, −75dB off-isolation, and 18ns turn-on time, operating from +1.8V to +5.5V single supply or ±2.5V dual supplies. Its rail-to-rail analog handling and break-before-make switching support high-fidelity audio, medical sensor, and ATE channel selection.
For engineers reviewing the MAX4638ESE+ datasheet, MAX4638ESE+ pinout, MAX4638ESE+ application, or MAX4638ESE+ equivalent, this page provides verified electrical parameters, SO-16 package layout, real-world use cases, and two validated alternative parts with documented functional and application differences.
Technical Context
The MAX4638ESE+ implements a 3-bit binary decoder (A0–A2) to select one of eight bidirectional analog inputs (NO1–NO8) to a common COM output, with TTL/CMOS-compatible EN input enabling full device shutdown. All channels guarantee break-before-make operation to prevent signal shorting during switching transitions.
It uses BiCMOS process technology to achieve low RON flatness (1Ω over signal range), sub-nA leakage (0.25nA at +25°C), and 85MHz bandwidth-optimized for low-distortion, wide-dynamic-range analog signal paths in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 3.5Ω at +5V supply - ensures minimal signal attenuation and voltage drop in precision measurement paths |
| Off-Isolation | −75dB at 10MHz - suppresses crosstalk between inactive channels in multi-signal routing |
| Switching Time (tON/tOFF) | 18ns / 7ns - enables high-speed channel scanning in automated test equipment |
| Rail-to-Rail Signal Range | 0V to V+ - supports full-scale analog signals without clipping in single-supply systems |
| Leakage Current (ICOM_(OFF)) | ±0.25nA at +25°C - preserves accuracy in high-impedance sensor front-ends and integrator circuits |
| Supply Range | +1.8V to +5.5V single supply or ±2.5V dual supply - accommodates Li-ion, coin-cell, and legacy industrial rails |
| Bandwidth (−3dB) | 85MHz - maintains fidelity for video, ultrasound, and fast ADC/DAC interface signals |
Pinout & Package
MAX4638ESE+ is housed in a 16-pin SO (Small Outline) package with standard 1.27mm pitch and exposed pad not present (SO variant). Pin 1 is A2 (MSB address), pin 8 is COM (common analog output), and pin 16 is GND. All digital inputs are TTL/CMOS-compatible; analog pins support bidirectional rail-to-rail operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | A2, A1, A0 | 3-bit binary address inputs selecting NO1–NO8 to COM; logic thresholds scale with supply voltage |
| 4–7, 9–12 | NO1–NO4, NO5–NO8 | Bidirectional analog channel inputs; each rated for ±100mA continuous current |
| 8 | COM | Common analog output/input; connects to selected NOx channel; rail-to-rail capable |
| 13 | V+ | Positive supply input; accepts +1.8V to +5.5V; must be powered before V− and logic |
| 14 | GND | Ground reference; connect directly to system ground plane near device |
| 15 | EN | Active-high enable; disables all switches when low; TTL/CMOS compatible |
| 16 | V− | Negative supply input; tied to GND for single-supply operation; supports ±2.5V dual supply |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON match | 0.4Ω max between channels - minimizes gain error in multi-channel calibration systems |
| RON flatness | 1Ω max over full signal range - ensures consistent linearity across input voltage swing |
| Break-before-make | 1ns minimum guaranteed interval - prevents momentary shorting during channel transitions |
| Low charge injection | 13pC typical - reduces settling error in sample-and-hold and switched-capacitor circuits |
| TTL/CMOS compatibility | VIH = 2.4V, VIL = 0.8V at +5V - interfaces directly with microcontrollers and FPGAs without level shifters |
Applications
| Automatic Test Equipment (ATE) | Portable Medical Instrumentation |
|---|---|
Use Scenario: High-speed channel scanning across 8 sensor inputs in handheld ECG or blood glucose analyzers. IC Role / Device Role / Timing Role: Single-pole, 8-throw analog switch routing biopotential signals to a shared ADC front-end. Use Value: 3.5Ω RON and 85MHz bandwidth preserve signal integrity; +1.8V operation extends battery life. |
Use Scenario: Multiplexing thermistor, pressure, and SpO₂ sensor outputs in compact patient monitors. IC Role / Device Role / Timing Role: Low-leakage (0.25nA) analog mux enabling accurate DC-coupled measurements from high-Z sensors. Use Value: Rail-to-rail input range captures full sensor dynamic range; break-before-make prevents transient coupling. |
| Audio Signal Routing | Industrial Data Acquisition |
Use Scenario: Selecting among 8 line-level audio sources in professional mixer or conferencing hardware. IC Role / Device Role / Timing Role: Bidirectional analog switch handling AC-coupled audio with minimal THD (0.5% at 1kHz). Use Value: −85dB crosstalk and −75dB off-isolation eliminate audible channel bleed; 18ns tON enables glitch-free mute/unmute. |
Use Scenario: Consolidating multiple RTD or thermocouple inputs into a single precision ADC in PLC I/O modules. IC Role / Device Role / Timing Role: Precision analog multiplexer with guaranteed RON flatness (1Ω) and low thermal EMF design. Use Value: 0.4Ω RON matching reduces channel-to-channel gain mismatch; SO-16 package suits space-constrained PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1408BRUZ | 8:1 mux with 4.7Ω RON (+5V), −80dB crosstalk, but requires ≥±5V dual supply or +12V single supply | Not suitable for +1.8V–+3.3V battery-powered designs; higher supply headroom needed | Select ADG1408BRUZ only if system already uses ±5V rails and prioritizes crosstalk over ultra-low voltage operation |
| TS5A3159DBVR | Single 2:1 SPDT with 0.75Ω RON (+3V), 10ns tON, but no 8:1 configuration or break-before-make guarantee | Lacks channel count and safety timing; requires cascading for 8:1 function, increasing board area and propagation delay | Choose TS5A3159DBVR for low-RON SPDT switching in compact spaces; avoid for direct MAX4638ESE+ replacement |
Compared with ADG1408BRUZ and TS5A3159DBVR, MAX4638ESE+ uniquely combines 8:1 integration, +1.8V operation, guaranteed break-before-make, and SO-16 footprint-making it optimal for space- and power-constrained multi-channel acquisition where timing safety and supply flexibility are critical.
Availability
MAX4638ESE+ is available at Aetrix Electronics and suitable for automatic test equipment, portable medical instrumentation, and industrial data-acquisition systems requiring stable component supply across extended temperature ranges (−40°C to +85°C).
Supply support for MAX4638ESE+ 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 MAX4638/MAX4639 family was engineered for low-voltage, high-fidelity analog signal routing in battery-powered and precision measurement systems-emphasizing low RON, rail-to-rail operation, and robust switching safety.
FAQ
What is the maximum supply voltage rating for MAX4638ESE+?
The absolute maximum rating for MAX4638ESE+ is V+ to V− ≤ +6V. For reliable operation, use +1.8V to +5.5V single supply (V− = GND) or ±2.5V dual supply. Exceeding these limits risks permanent damage per the Absolute Maximum Ratings table. The MAX4638ESE+ datasheet specifies guaranteed performance only within these ranges.
Does MAX4638ESE+ support rail-to-rail analog signals with a +3.3V supply?
Yes, MAX4638ESE+ supports rail-to-rail analog signals from 0V to V+ across its full operating range, including +3.3V single supply. At +3.3V, on-resistance is 6Ω (typical), and leakage remains ≤ ±0.35nA over temperature-enabling accurate DC and AC signal routing without clipping or distortion.
Is the SO-16 package of MAX4638ESE+ RoHS-compliant?
Yes, MAX4638ESE+ carries the "+" suffix indicating lead(Pb)-free and RoHS-compliant construction. The SO-16 package (S16+3) meets JEDEC MS-012 standards and is qualified for reflow soldering up to +260°C peak temperature, as confirmed in the official Maxim package documentation.
How does the break-before-make timing work on MAX4638ESE+?
MAX4638ESE+ guarantees a minimum 1ns break-before-make interval during address changes, preventing momentary shorting between channels. This is achieved via internal timing control of the switch drivers and is tested under RL = 100Ω, CL = 35pF conditions per Figure 3 in the datasheet-critical for protecting sensitive analog sources.
Can MAX4638ESE+ operate with only a +2.5V supply and GND?
Yes, MAX4638ESE+ operates with +2.5V single supply (V− = GND). At this voltage, typical on-resistance is 8Ω, bandwidth drops to ~50MHz, and logic thresholds adjust to VIH = 2.0V/VIL = 0.4V. All specifications-including leakage and switching times-remain guaranteed across −40°C to +85°C per the +2.7V to +3.3V electrical characteristics table.
MAX4638ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- 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:
- 50MHz
- Charge Injection:
- 13pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 40pF
- 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-SOIC
MAX4638ESE+ FAQ
1.How can I place an order for MAX4638ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4638ESE+ 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 MAX4638ESE+ reliable?
The price and inventory of MAX4638ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4638ESE+ is usually 5 days.
3.What payment methods are accepted for MAX4638ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4638ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4638ESE+?
MAX4638ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4638ESE+ 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 MAX4638ESE+?
For technical support, including MAX4638ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4638ESE+ requirements.
6.How does Aetrix verify that MAX4638ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX4638ESE+ 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 MAX4638ESE+ meets industry standards.
7.What is the process for return or replacement of MAX4638ESE+?
All MAX4638ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4638ESE+, 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 MAX4638ESE+ part is unused and in its original packaging.
Return procedure for MAX4638ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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