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Analog Devices Inc./Maxim Integrated MAX4634ETB
- Part No.:
- MAX4634ETB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX4634ETB.pdf
- Description:
- IC SWITCH SP4T X 1 4OHM 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:915
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Product details
Overview
MAX4634ETB from Maxim Integrated is a fast, low-voltage, 4-channel CMOS analog multiplexer with 4Ω (max) on-resistance, 18ns turn-on time, and 11ns turn-off time. It operates from +1.8V to +5.5V single supply, handles V+ to GND analog signals, and delivers 0.1nA (max) off-leakage at +25°C - ideal for precision signal routing in portable instrumentation.
For engineers reviewing the MAX4634ETB datasheet, MAX4634ETB pinout, MAX4634ETB application, or MAX4634ETB equivalent, this device supports high-fidelity audio/video switching, battery-powered data acquisition, and sample-and-hold circuits where low RON flatness (1Ω max), tight RON matching (0.3Ω max), and -80dB off-isolation at 1MHz are critical selection criteria.
Technical Context
The MAX4634ETB implements a CMOS transmission-gate architecture with four independent SPST switches controlled by dual address lines (A1/A0) and an active-high enable (EN). All switches share a common analog terminal (COM) and support bidirectional signal flow across the full supply range (GND to V+).
Its logic inputs feature TTL/CMOS-compatible thresholds (+0.8V low, +2.4V high at +5V), enabling direct interfacing with microcontrollers without level-shifting. The TDFN-EP package includes an exposed pad internally tied to GND, requiring connection to a PCB ground plane for thermal and electrical performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 4Ω (max) at +5V - ensures minimal signal attenuation and voltage drop in precision analog paths |
| RON Matching | 0.3Ω (max) between channels - enables accurate channel-to-channel signal gain consistency |
| RON Flatness | 1Ω (max) over signal range - maintains linear switch behavior across full analog input span |
| Turn-On / Turn-Off Time | 18ns / 11ns - supports high-speed multiplexing in sampling systems up to ~30MHz effective rate |
| Off-Isolation | -80dB at 1MHz - suppresses crosstalk between inactive channels in multi-signal environments |
| Analog Signal Range | V+ to GND - allows rail-to-rail analog signal handling without external biasing or clamping |
| Supply Voltage Range | +1.8V to +5.5V - enables direct integration into 1.8V, 3.3V, and 5V systems without regulators |
Pinout & Package
The MAX4634ETB is housed in a 10-pin TDFN-EP package (3mm × 3mm) with exposed pad (EP) internally connected to GND. Thermal performance requires soldering EP to a large PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Address Input | Selects one of four NOx channels via binary encoding with A1; defines switch routing logic |
| 2 (NO1) | Normally Open Switch Terminal | Input/output node for Channel 1; high-impedance when unselected |
| 3 (GND) | Ground Reference | Primary return path for analog and digital circuitry; connects to EP for thermal stability |
| 4 (NO3) | Normally Open Switch Terminal | Input/output node for Channel 3; electrically isolated when disabled |
| 5 (EN) | Enable Input | Active-high control: drives all switches to high-Z when low; tie to V+ if unused |
| 6 (V+) | Positive Supply | Single power rail for analog and digital operation; bypass with 10µF capacitor near pin |
| 7 (NO4) | Normally Open Switch Terminal | Input/output node for Channel 4; supports bidirectional signal flow |
| 8 (COM) | Common Analog Terminal | Shared I/O port for all four channels; must be routed with low-inductance layout |
| 9 (NO2) | Normally Open Switch Terminal | Input/output node for Channel 2; matches RON and leakage specs of other NOx pins |
| 10 (A1) | Address Input | MSB of 2-bit address bus; used with A0 to select NO1–NO4 per truth table |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON flatness | 1Ω (max) over full signal range - preserves signal integrity in wide-dynamic-range applications |
| Tight RON matching | 0.3Ω (max) between channels - eliminates gain mismatch in multi-channel sensor interfaces |
| Ultra-low off-leakage | 0.1nA (max) at +25°C - prevents DC error accumulation in high-impedance sample-and-hold nodes |
| High off-isolation | -80dB at 1MHz - isolates active and inactive signal paths in mixed-frequency audio/video routing |
| Fast switching | 18ns tON/11ns tOFF - enables sub-50ns channel settling for high-throughput data acquisition |
Applications
| Portable Medical Sensors | Professional Audio Mixers |
|---|---|
|
Use Scenario: Multiplexing outputs from multiple biopotential electrodes (ECG, EMG) into a single ADC front-end. IC Role / Device Role / Timing Role: 4-channel analog switch routing low-level mV-range signals with minimal added noise or offset. Use Value: 4Ω RON and 0.1nA leakage prevent loading of high-impedance electrode interfaces and preserve signal fidelity. |
Use Scenario: Routing line-level stereo signals between input sources and output buses in digital mixing consoles. IC Role / Device Role / Timing Role: Low-distortion analog switch enabling silent channel switching without audible pop/click. Use Value: -80dB off-isolation and 0.018% THD ensure clean signal separation and transparent audio quality. |
| Battery-Powered Data Loggers | Automotive Cabin Infotainment |
|
Use Scenario: Scanning thermistor, pressure, and humidity sensor outputs in ultra-low-power environmental monitors. IC Role / Device Role / Timing Role: Power-efficient analog multiplexer operating down to +1.8V supply with minimal quiescent current. Use Value: +1.8V operation and 1µA typical I+ allow extended runtime on coin-cell batteries without voltage boosters. |
Use Scenario: Switching auxiliary audio inputs (USB, Bluetooth, AUX) to a shared amplifier stage in vehicle head units. IC Role / Device Role / Timing Role: Automotive-grade analog switch supporting wide temperature range (-40°C to +85°C) and ESD robustness. Use Value: Guaranteed RON matching and -78dB crosstalk prevent interference between concurrent audio streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG714BRUZ | 8-channel, 4.5Ω RON, +3V to +5.5V supply, SPI interface instead of parallel address lines | Requires serial control logic; better suited for systems needing >4 channels or programmable sequencing | Choose ADG714BRUZ when expanding channel count or integrating with microcontroller SPI peripherals |
| TS5A23157DCUR | 2-channel, 0.9Ω RON, +1.65V to +5.5V, no enable pin, smaller 8-pin VSSOP package | Lacks EN and address decoding; optimized for dual-switch simplicity rather than 4:1 routing flexibility | Choose TS5A23157DCUR for space-constrained dual-path designs where lowest RON is prioritized over channel count |
Compared with ADG714BRUZ and TS5A23157DCUR, the MAX4634ETB uniquely balances 4-channel parallel addressing, guaranteed RON matching (0.3Ω), and TDFN thermal performance - making it optimal for compact, high-precision, battery-operated multiplexing where layout area and signal consistency are critical.
Availability
MAX4634ETB is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply and long-term sourcing continuity.
Supply support for MAX4634ETB 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 industrial, medical, and communications applications.
The MAX4634ETB belongs to Maxim's high-speed analog switch family, engineered specifically for low-voltage, low-distortion signal routing in portable and space-constrained systems.
FAQ
What is the maximum supply voltage rating for the MAX4634ETB?
The MAX4634ETB has an absolute maximum supply voltage (V+) of +6V. Operation must remain within the recommended +1.8V to +5.5V range. Exceeding +6V risks permanent damage due to internal diode breakdown, even if duration is brief. Always apply V+ before analog or logic signals to avoid latch-up.
Does the MAX4634ETB support bidirectional signal flow?
Yes, the MAX4634ETB supports fully bidirectional analog signal flow between COM and any selected NOx terminal. Its CMOS transmission-gate structure imposes no inherent directionality - signals can pass from NO1 to COM or COM to NO1 with identical RON, leakage, and bandwidth characteristics.
How is the exposed pad (EP) on the MAX4634ETB TDFN package used?
The exposed pad (EP) on the MAX4634ETB is internally connected to GND and must be soldered to a large PCB ground plane. It serves dual purposes: improving thermal dissipation (enabling 1951mW power handling) and reducing ground inductance for stable analog performance. EP is not intended as an electrical test point or signal node.
What logic levels are compatible with the MAX4634ETB's digital inputs?
The MAX4634ETB accepts TTL/CMOS-compatible logic levels: VIH = +2.4V (min) and VIL = +0.8V (max) when operated at +5V supply. At +3V supply, thresholds scale to VIH = +2.0V and VIL = +0.4V. This allows direct interfacing with 3.3V and 5V microcontrollers without level shifters.
Can the MAX4634ETB operate reliably at +1.8V supply?
Yes, the MAX4634ETB is fully specified down to +1.8V supply. At this voltage, RON rises to 30Ω (typ), but timing (tON/tOFF) and leakage remain within guaranteed limits. It remains functional for low-power sensor multiplexing where speed is secondary to energy efficiency.
MAX4634ETB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 4Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 18ns, 11ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 13pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -52dB @ 10MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN-EP (3x3)
MAX4634ETB FAQ
1.How can I place an order for MAX4634ETB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4634ETB 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 MAX4634ETB reliable?
The price and inventory of MAX4634ETB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4634ETB is usually 5 days.
3.What payment methods are accepted for MAX4634ETB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4634ETB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4634ETB?
MAX4634ETB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4634ETB 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 MAX4634ETB?
For technical support, including MAX4634ETB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4634ETB requirements.
6.How does Aetrix verify that MAX4634ETB is sourced from the original manufacturer or authorized distributors?
All MAX4634ETB 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 MAX4634ETB meets industry standards.
7.What is the process for return or replacement of MAX4634ETB?
All MAX4634ETB units undergo pre-shipment inspection (PSI). If there is an issue with MAX4634ETB, 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 MAX4634ETB part is unused and in its original packaging.
Return procedure for MAX4634ETB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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