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Analog Devices Inc./Maxim Integrated MAX4636ETB+
- Part No.:
- MAX4636ETB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX4636ETB+.pdf
- Description:
- IC SWITCH SPDT X 2 4OHM 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,421
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Product details
Overview
MAX4636ETB+ from Maxim Integrated is a dual SPDT CMOS analog switch with 4Ω max on-resistance at +5V, rail-to-rail signal handling (0V to V+), and guaranteed break-before-make switching. It operates from +1.8V to +5.5V single supply and delivers 14ns max turn-on/6ns max turn-off times - optimized for audio routing, low-voltage data acquisition, and battery-powered signal path control.
For engineers reviewing the MAX4636ETB+ datasheet, MAX4636ETB+ pinout, MAX4636ETB+ application, or MAX4636ETB+ equivalent, key selection criteria include on-resistance flatness (≤1Ω at +5V), channel matching (≤0.2Ω), off-isolation (−65dB at 1MHz), THD (0.1%), and compatibility with 1.8V logic control in 3mm × 3mm thin QFN packaging.
Technical Context
The MAX4636ETB+ implements two independent SPDT switches using CMOS transmission-gate architecture, supporting bidirectional analog signal flow across COM/NO/NC terminals. Its logic inputs accept 0–5.5V levels regardless of V+ voltage, enabling direct interfacing with 5V controllers while operating from 1.8V supplies.
Guaranteed break-before-make timing (≤1ns) prevents momentary shorting during state transitions. On-resistance remains stable over temperature (±0.2Ω variation from −40°C to +85°C at +5V) and signal range (flatness ≤1Ω), ensuring minimal distortion in precision signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 4Ω at +5V supply - enables <10mV drop at 2.5mA signal current, critical for low-level sensor or audio signals |
| On-Resistance Flatness (max) | 1Ω at +5V - ensures consistent gain and linearity across full 0V–V+ analog input range |
| Channel Matching (max) | 0.2Ω - guarantees ≤0.5% gain mismatch between dual switches for balanced differential routing |
| Turn-On / Turn-Off Time (max) | 14ns / 6ns - supports >50MHz digital control rates and fast multiplexing in data acquisition |
| Rail-to-Rail Signal Range | 0V to V+ - preserves full dynamic range of baseband audio, sensor outputs, and DAC/ADC interfaces |
| Off-Isolation (at 1MHz) | −65dB - suppresses crosstalk between active and inactive channels in multi-source systems |
| Total Harmonic Distortion | 0.1% - meets fidelity requirements for consumer and professional audio signal switching |
Pinout & Package
MAX4636ETB+ uses a 10-pin 3mm × 3mm thin QFN package (T1033+1 variant) with exposed pad not connected internally. Pin 1 index marked by top-side dot; no thermal pad connection required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN1 | Logic control input for Switch 1 | Active-high control: drives NO1→COM1 when high; NC1→COM1 when low (non-inverted logic) |
| 2 NO1 | Normally open terminal, Switch 1 | Connects to COM1 only when IN1 = high; open-circuit otherwise - used for default-open signal paths |
| 3 GND | Ground reference | Return path for supply and logic; must be low-impedance to minimize noise coupling into analog channels |
| 4 NO2 | Normally open terminal, Switch 2 | Independent SPDT path; identical behavior to NO1 but controlled by IN2 |
| 5 IN2 | Logic control input for Switch 2 | Independent enable for second switch; allows asynchronous routing of two signal pairs |
| 6 COM2 | Common terminal, Switch 2 | Bidirectional I/O node - accepts or delivers analog signals depending on switch state |
| 7 NC2 | Normally closed terminal, Switch 2 | Connects to COM2 when IN2 = low; open when IN2 = high - provides default-closed redundancy |
| 8 V+ | Positive supply input | Accepts +1.8V to +5.5V; powers analog core and logic; decoupling capacitor required near pin |
| 9 NC1 | Normally closed terminal, Switch 1 | Default-closed path for Switch 1; complements NO1 for fail-safe or power-loss routing |
| 10 COM1 | Common terminal, Switch 1 | Primary analog I/O node for first switch; connects to either NO1 or NC1 based on IN1 state |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog operation | Supports full 0V–V+ signal swing without clipping - essential for unbuffered DAC outputs and op-amp interfaces |
| Break-before-make guarantee | ≤1ns interval prevents short-circuit transients during switching - protects downstream circuitry in relay-replacement applications |
| Low charge injection (2pC typ) | Minimizes voltage glitch on sampled nodes - critical for precision sample-and-hold and ADC front-end multiplexing |
| 1.8V logic-compatible control | Accepts 1.8V logic high (VIH ≥ 2.0V at +3V supply) without level shifters - simplifies integration with modern low-voltage MCUs |
| −67dB crosstalk at 1MHz | Isolates adjacent channels in multi-signal systems - maintains SNR in audio mixers and communication channel banks |
Applications
| Audio Signal Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Selecting between multiple microphone inputs or headphone outputs in portable audio devices. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing bidirectional, low-distortion signal path selection under MCU GPIO control. Use Value: 0.1% THD and rail-to-rail operation preserve audio fidelity; 4Ω RON minimizes insertion loss in line-level paths. |
Use Scenario: Multiplexing sensor outputs (e.g., thermistors, RTDs) into a single ADC channel in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling of up to four sensors via two independent SPDT paths. Use Value: 1Ω on-resistance flatness ensures consistent gain across all channels; 1.8V operation extends battery life in ultra-low-power designs. |
| Relay Replacement | Sample-and-Hold Circuits |
Use Scenario: Replacing electromechanical relays in industrial control panels where fast, silent, and wear-free switching is required. IC Role / Device Role / Timing Role: Solid-state SPDT switch delivering break-before-make isolation and 100k-cycle reliability without contact bounce. Use Value: −65dB off-isolation prevents leakage between control circuits; 14ns switching enables real-time response in closed-loop systems. |
Use Scenario: Holding analog voltage samples during ADC conversion cycles in high-speed data loggers. IC Role / Device Role / Timing Role: Low-charge-injection (2pC) switch isolating hold capacitor from source impedance during acquisition phase. Use Value: Minimal droop and settling error due to 0.2Ω channel matching and <1ns BBM - improves effective resolution by ≥½ LSB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4636EUB+ | Same electrical specs, but in 10-pin µMAX (3mm × 3mm) package with different pinout and no exposed pad | Requires PCB redesign due to incompatible footprint and thermal profile; suited for space-constrained layouts where QFN reflow is unavailable | Select MAX4636EUB+ only if µMAX assembly infrastructure is already in place and board area permits larger body height |
| ADG774AACPZ-REEL7 | 4.5Ω RON max at +5V, but higher 12ns tON/8ns tOFF; supports −40°C to +125°C extended temp range | Better suited for automotive or industrial environments requiring wider temperature operation; lacks guaranteed BBM timing | Choose ADG774AACPZ-REEL7 when operating beyond +85°C is mandatory and BBM is not safety-critical |
Compared with MAX4636ETB+, MAX4636EUB+ offers identical performance in a legacy package requiring layout change, while ADG774AACPZ-REEL7 trades guaranteed break-before-make for extended temperature range - making MAX4636ETB+ optimal for precision, high-speed, commercial-temperature signal routing.
Availability
MAX4636ETB+ is available at Aetrix Electronics and suitable for audio routing, low-voltage data acquisition, and relay replacement applications requiring stable component supply, RoHS-compliant sourcing, and long-term production continuity.
Supply support for MAX4636ETB+ 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, communications, and consumer applications.
The MAX4635/MAX4636 product line targets low-voltage, high-fidelity analog signal routing - emphasizing rail-to-rail operation, low on-resistance flatness, and fast switching for portable and battery-sensitive systems.
FAQ
What is the maximum supply voltage rating for MAX4636ETB+?
The absolute maximum supply voltage (V+) for MAX4636ETB+ is +6V. Operation above +5.5V violates the recommended operating conditions and risks permanent damage. The device is fully specified from +1.8V to +5.5V, with on-resistance and switching times guaranteed across that range. Exceeding +6V may trigger internal ESD protection diodes and degrade long-term reliability.
Does MAX4636ETB+ support bidirectional analog signal flow?
Yes, MAX4636ETB+ supports fully bidirectional analog signal flow on all COM/NO/NC terminals. The CMOS transmission-gate structure imposes no directionality - signals can pass from COM to NO, NO to COM, or NC to COM with identical on-resistance and distortion characteristics. This enables flexible use in both source-selection and load-switching configurations.
What is the logic polarity relationship between MAX4636ETB+ and MAX4635ETB+?
MAX4636ETB+ uses non-inverted logic: INx = high connects NOx to COMx, and INx = low connects NCx to COMx. In contrast, MAX4635ETB+ uses inverted logic - its truth table is reversed. This difference is hardwired in silicon and cannot be changed externally. System design must match control logic polarity to the selected part number.
Can MAX4636ETB+ operate with a 1.8V supply and still interface with 3.3V logic controllers?
Yes, MAX4636ETB+ supports 1.8V to 5.5V single-supply operation and accepts logic inputs up to +5.5V regardless of V+. At V+ = 1.8V, VIH threshold is ~0.9V (guaranteed by design), so standard 3.3V CMOS outputs easily satisfy the high-level requirement without level shifters - simplifying interface with common microcontrollers and FPGAs.
Is an external decoupling capacitor required for MAX4636ETB+?
Yes, a 0.1µF ceramic decoupling capacitor is required between V+ and GND, placed as close as possible to pins 8 and 3. This stabilizes the internal charge pump and reduces supply-induced noise coupling into analog paths. Omitting it may cause increased THD, erratic switching, or degraded off-isolation - especially at high frequencies or under dynamic load conditions.
MAX4636ETB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- 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):
- 14ns, 6ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -67dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN-EP (3x3)
MAX4636ETB+ FAQ
1.How can I place an order for MAX4636ETB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4636ETB+ 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 MAX4636ETB+ reliable?
The price and inventory of MAX4636ETB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4636ETB+ is usually 5 days.
3.What payment methods are accepted for MAX4636ETB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4636ETB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4636ETB+?
MAX4636ETB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4636ETB+ 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 MAX4636ETB+?
For technical support, including MAX4636ETB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4636ETB+ requirements.
6.How does Aetrix verify that MAX4636ETB+ is sourced from the original manufacturer or authorized distributors?
All MAX4636ETB+ 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 MAX4636ETB+ meets industry standards.
7.What is the process for return or replacement of MAX4636ETB+?
All MAX4636ETB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4636ETB+, 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 MAX4636ETB+ part is unused and in its original packaging.
Return procedure for MAX4636ETB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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