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Analog Devices Inc./Maxim Integrated MAX4733EUA+
- Part No.:
- MAX4733EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4733EUA+.pdf
- Description:
- IC SW SPST-NO/NCX2 25OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
The MAX4733EUA+ from Maxim Integrated is a dual SPST analog switch IC featuring one normally open (NO) and one normally closed (NC) channel, designed for low-voltage signal routing in space-constrained systems. It operates from a single +2V to +11V supply, delivers 50Ω max on-resistance at +3V, 0.1nA max leakage at +25°C, and supports rail-to-rail analog signals - ideal for battery-powered audio routing and portable data-acquisition front-ends.
For engineers reviewing the MAX4733EUA+ datasheet, MAX4733EUA+ pinout, MAX4733EUA+ application, or MAX4733EUA+ equivalent, this page provides verified electrical specs, µMAX package terminal mapping, break-before-make timing (1ns), and real-world selection guidance against functionally aligned alternatives.
Technical Context
The MAX4733EUA+ integrates two independent CMOS SPST switches with complementary logic control: IN1 toggles NO1/COM1, IN2 toggles NC2/COM2. Its internal architecture guarantees matched on-resistance (≤3.5Ω at +3V) and flat RON (≤9Ω) across the full signal range (GND to V+), enabling precision signal path switching without gain error.
It employs TTL/CMOS-compatible digital inputs, supports single-supply operation down to +2V, and achieves -108dB crosstalk and -72dB off-isolation at 1MHz - critical for high-fidelity A/V multiplexing and low-noise sensor interface applications where channel separation and signal integrity are non-negotiable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.0V to +11V - enables direct integration into 2.5V, 3.3V, and 5V systems without level-shifting. |
| On-Resistance (RON) | 50Ω max at +3V - ensures minimal insertion loss and voltage drop in low-level analog paths. |
| RON Matching | 3.5Ω max at +3V - maintains consistent gain/attenuation between channels in differential or dual-path designs. |
| Leakage Current | ±0.1nA max at +25°C - preserves accuracy in high-impedance sensor or battery-monitoring circuits. |
| Break-Before-Make Time | 1ns (guaranteed) - prevents momentary short-circuit during channel switching in power-sensitive signal chains. |
| Off-Isolation | -72dB at 1MHz - suppresses unwanted coupling between active and inactive signal paths. |
| Crosstalk | -108dB at 1MHz - isolates adjacent channels in multi-source A/V routing or mixed-signal PCB layouts. |
Pinout & Package
The MAX4733EUA+ uses an 8-pin µMAX® package (3.0mm × 3.0mm, 0.8mm height) with exposed pad (EP) connected to V+. Pin 1 is NO1; pin 2 is IN1; pin 3 is IN2; pin 4 is NO2 (NC2 per truth table); pin 5 is COM2; pin 6 is GND; pin 7 is COM1; pin 8 is V+.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Normally open analog terminal for first switch - connects to COM1 only when IN1 = HIGH. |
| 2 | IN1 | Digital control input for NO1/COM1 switch - TTL/CMOS compatible; drives switch state directly. |
| 3 | IN2 | Digital control input for NC2/COM2 switch - complements IN1 logic to ensure break-before-make behavior. |
| 4 | NC2 | Normally closed analog terminal for second switch - disconnects from COM2 only when IN2 = HIGH. |
| 5 | COM2 | Common analog node for second switch - bidirectional I/O path shared with NC2 and (internally) NO2. |
| 6 | GND | Digital ground reference - must be tied to system ground plane for stable logic thresholds and noise immunity. |
| 7 | COM1 | Common analog node for first switch - bidirectional I/O path shared with NO1 and (internally) NC1. |
| 8 | V+ | Positive supply input - powers analog core and logic; EP pad must be soldered to V+ for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 1ns interval prevents signal shorting during channel transition - essential for safe analog muxing. |
| Rail-to-rail analog signal handling | Supports full GND-to-V+ swing without distortion - preserves dynamic range in ADC driver and codec interface stages. |
| Ultra-low quiescent power | 0.5nW typical - extends battery life in always-on portable instrumentation and wearable sensors. |
| Low charge injection (7.5pC) | Minimizes voltage glitch at COM nodes during switching - critical for precision sample-and-hold and DAC output buffering. |
| High-frequency bandwidth | 300MHz on-channel -3dB bandwidth - supports fast video, RF sampling, and wideband test equipment signal routing. |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
|
Use Scenario: Selecting between microphone and line-in inputs in a smartphone or voice recorder. IC Role / Device Role / Timing Role: Dual SPST switch providing isolated analog path selection with break-before-make to prevent pop/click artifacts. Use Value: 50Ω RON and -108dB crosstalk preserve SNR and channel separation in compact audio subsystems. |
Use Scenario: Multiplexing multiple sensor outputs (thermocouple, RTD, strain gauge) into a single ADC channel. IC Role / Device Role / Timing Role: Low-leakage (±0.1nA), rail-to-rail analog switch enabling high-impedance sensor interfacing without signal degradation. Use Value: 0.1nA leakage and 3.5Ω RON matching ensure measurement accuracy and channel-to-channel consistency. |
| Battery-Powered Instrumentation | Communications Front-End |
|
Use Scenario: Enabling/disabling signal conditioning blocks (filters, amplifiers) in handheld multimeters or IoT edge nodes. IC Role / Device Role / Timing Role: Power-gating analog subcircuits via NO/NC configuration to reduce standby current. Use Value: 0.5nW quiescent power and +2V minimum supply allow operation directly from single-cell Li-ion or coin-cell batteries. |
Use Scenario: Switching between transmit and receive paths in half-duplex RF modules or modem interfaces. IC Role / Device Role / Timing Role: High-isolation (-72dB), fast-switching (tON/tOFF ≤ 85ns) analog gate managing signal directionality. Use Value: 300MHz bandwidth and 1ns break-before-make support clean transitions in 2.4GHz ISM band front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4733ETA+ | Same die, 8-pin TDFN-EP package (3×3mm, 0.8mm); exposed pad tied to V+; identical electrical specs. | Better thermal dissipation and higher power handling (1951mW vs. 362mW); suited for higher-current or thermally constrained layouts. | Select MAX4733ETA+ when board layout allows TDFN footprint and thermal management requires lower junction temperature rise. |
| ADG733BRUZ | 3-channel SPST, 16-pin TSSOP; 4.5Ω RON at +3V; 1nA leakage; no guaranteed break-before-make; -85dB isolation. | Higher channel count but larger footprint; lacks MAX4733EUA+'s 1ns tBBM guarantee and -108dB crosstalk. | Choose ADG733BRUZ only if three independent switches are needed and break-before-make timing is not safety-critical. |
Compared with MAX4733ETA+, the MAX4733EUA+ offers identical analog performance in a smaller µMAX footprint but lower thermal capacity; versus ADG733BRUZ, it trades channel count for superior isolation, guaranteed tBBM, and lower leakage - making it optimal for precision dual-path routing where size and signal integrity dominate.
Availability
The MAX4733EUA+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable audio routing, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4733EUA+ 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 MAX4733EUA+ belongs to Maxim's ultra-low-power analog switch family, engineered specifically for space- and power-constrained portable systems requiring rail-to-rail signal integrity and guaranteed break-before-make timing.
FAQ
What is the maximum supply voltage rating for the MAX4733EUA+?
The MAX4733EUA+ has an absolute maximum supply voltage (V+) of +12V referenced to GND, but its recommended operating range is +2.0V to +11V. Exceeding +11V risks violating the device's safe operating area, especially under load. For reliable long-term operation, maintain V+ ≤ +11V and use a 0.1µF bypass capacitor close to the V+ pin when operating near the upper limit.
Does the MAX4733EUA+ support rail-to-rail analog signal switching?
Yes, the MAX4733EUA+ fully supports rail-to-rail analog signal switching - signals from GND to V+ pass through both NO1/COM1 and NC2/COM2 paths with minimal RON variation. This is confirmed by typical operating characteristics showing <9Ω RON flatness over the full 0V to V+ range at +3V supply, enabling accurate signal routing in ADC drivers and codec interfaces without clipping or distortion.
What is the guaranteed break-before-make time for the MAX4733EUA+?
The MAX4733EUA+ guarantees a break-before-make time (tBBM) of 1ns maximum at +3V and +5V supplies, as specified in the Electrical Characteristics tables. This parameter applies exclusively to the MAX4733 variant (one NO + one NC switch) and ensures no overlap between channel conduction states during logic transitions - a critical feature for preventing short-circuits in analog multiplexers and power-path selectors.
How does the MAX4733EUA+ compare to the MAX4731EUA+ and MAX4732EUA+?
The MAX4733EUA+ differs from MAX4731EUA+ (dual NO) and MAX4732EUA+ (dual NC) solely in switch configuration: it integrates one NO and one NC channel in the same 8-pin µMAX package. All three share identical electrical specs - RON, leakage, bandwidth, and timing - and pin compatibility. The choice depends strictly on system-level signal path requirements: MAX4733EUA+ enables complementary switching (e.g., power gating + signal routing) within one IC.
Is the exposed pad on the MAX4733EUA+ package required to be connected?
Yes - the exposed pad (EP) on the MAX4733EUA+ µMAX package must be soldered to the V+ net on the PCB. It is not optional: the EP serves as both a thermal path (reducing junction-to-board thermal resistance) and an electrical connection to the internal V+ rail. Leaving it unconnected degrades thermal performance, increases power dissipation risk, and may cause instability in high-current or high-temperature operation. The datasheet explicitly states "EP = Exposed Pad. Connect to V+."
MAX4733EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 2V ~ 11V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 85ns, 45ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 7.5pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -108dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4733EUA+ FAQ
1.How can I place an order for MAX4733EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4733EUA+ 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 MAX4733EUA+ reliable?
The price and inventory of MAX4733EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4733EUA+ is usually 5 days.
3.What payment methods are accepted for MAX4733EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4733EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4733EUA+?
MAX4733EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4733EUA+ 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 MAX4733EUA+?
For technical support, including MAX4733EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4733EUA+ requirements.
6.How does Aetrix verify that MAX4733EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX4733EUA+ 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 MAX4733EUA+ meets industry standards.
7.What is the process for return or replacement of MAX4733EUA+?
All MAX4733EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4733EUA+, 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 MAX4733EUA+ part is unused and in its original packaging.
Return procedure for MAX4733EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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