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Analog Devices Inc./Maxim Integrated MAX4643EUA+TG24
- Part No.:
- MAX4643EUA+TG24
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4643EUA+TG24.pdf
- Description:
- IC SW SPST-NO/NCX2 4OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,818
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Product details
Overview
MAX4643EUA+TG24 from Maxim Integrated is a dual SPST analog switch IC with one normally open (NO) and one normally closed (NC) channel, operating from +1.8V to +5.5V single supply. It delivers 4Ω max on-resistance at +5V, 0.6Ω RON matching between channels, 1Ω RON flatness, <20ns switching times, and <0.35nA leakage over –40°C to +85°C - used in battery-powered audio routing and low-voltage data-acquisition systems.
For engineers reviewing the MAX4643EUA+TG24 datasheet, MAX4643EUA+TG24 pinout, MAX4643EUA+TG24 application, or MAX4643EUA+TG24 equivalent, key selection criteria include guaranteed RON flatness across rail-to-rail analog signals, break-before-make timing (7ns typ), low charge injection (2pC), and µMAX-8 package compatibility with space-constrained portable designs.
Technical Context
The MAX4643EUA+TG24 implements complementary CMOS transmission-gate architecture with independent logic-controlled IN1/IN2 inputs driving separate NO1 and NC2 switches. Its internal level translators ensure TTL/CMOS-compatible logic thresholds only at +5V supply, while rail-to-rail analog signal handling (0V to V+) is maintained across the full +1.8V to +5.5V range.
Break-before-make timing (tBBM = 7ns typ) is intrinsic to the MAX4643 variant and prevents momentary shorting during channel transition. ESD protection diodes are integrated between each analog pin (NO1, NC2, COM1, COM2) and both V+ and GND, defining leakage behavior under overvoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - supports direct Li-ion battery (3.0–3.7V) and 3.3V/5V system rails without level shifting |
| On-Resistance (RON) | 4Ω max at +5V - ensures minimal signal attenuation and voltage drop in precision analog paths |
| RON Matching | 0.6Ω max between channels - enables matched gain/attenuation in differential or dual-path signal conditioning |
| Switching Speed | tON = 18ns typ, tOFF = 12ns typ - suitable for high-sample-rate multiplexing up to ~25MHz |
| Leakage Current | <0.35nA over –40°C to +85°C - preserves accuracy in high-impedance sensor front-ends and sample-and-hold circuits |
| Charge Injection | 2pC - limits voltage glitch on hold capacitors, critical for 12-bit+ data acquisition stability |
| Off-Isolation | –80dB at 1MHz - suppresses crosstalk between active and inactive signal paths in multi-channel routing |
Pinout & Package
MAX4643EUA+TG24 is housed in an 8-pin µMAX package (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed pad, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | NO1 / NC2 | Normally open (Pin 1) and normally closed (Pin 5) analog switch terminals - bidirectional, interchangeable with COM pins |
| 2, 6 | IN1 / IN2 | Logic control inputs - drive respective switches; compatible with 5V TTL/CMOS at V+ = 5V, scaled thresholds at lower supplies |
| 3, 7 | GND | Analog and digital ground reference - must be low-impedance; shared return for all internal circuitry |
| 4 | COM1 | Common terminal for NO1 switch - connects to load/sensor; bidirectional signal path with NO1 |
| 8 | V+ | Positive supply input - requires local 0.1µF ceramic bypass to GND for stable switching performance |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal range | 0V to V+ - enables full-scale signal switching without clipping in low-voltage systems (e.g., 1.8V logic + analog) |
| Guaranteed RON flatness | 1Ω max over full analog range - maintains consistent gain/attenuation across input voltage swing, critical for audio fidelity |
| Break-before-make timing | 7ns typical - prevents transient short-circuit between NO1 and NC2 during state change, essential for safe signal reconfiguration |
| Low THD | 0.018% at 20Hz–20kHz - preserves signal integrity in audio routing and instrumentation amplifier front-ends |
| Ultra-low quiescent power | <0.01µW - eliminates standby current concerns in always-on battery-powered devices |
Applications
| Battery-Powered Portable Audio | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Signal routing between microphone inputs, headphone outputs, and codec interfaces in handheld medical monitors and voice recorders. IC Role / Device Role / Timing Role: Dual SPST switch enabling dynamic path selection: NO1 routes mic bias, NC2 passes line-out signal - coordinated via microcontroller GPIOs. Use Value: 4Ω RON minimizes insertion loss in 20kΩ audio paths; 0.35nA leakage prevents DC offset drift in high-Z electret mic bias networks. |
Use Scenario: Multiplexing multiple sensor outputs (thermocouple, RTD, strain gauge) into a single ADC channel in industrial IoT nodes. IC Role / Device Role / Timing Role: Analog switch front-end providing channel isolation and rail-to-rail signal pass-through before programmable gain amplifier stage. Use Value: 1Ω RON flatness ensures consistent gain error across full ±2.5V input range; 2pC charge injection avoids hold capacitor corruption during sampling. |
| Communications Circuit Protection | Sample-and-Hold Interface |
Use Scenario: Isolating RF front-end test points from baseband processor during calibration sequences in field-deployable comms analyzers. IC Role / Device Role / Timing Role: NC2 switch remains closed during normal operation; NO1 opens only during diagnostic mode to disconnect sensitive nodes. Use Value: –80dB off-isolation at 1MHz blocks RF coupling into baseband; ESD diodes (V+/GND) protect against 2kV HBM transients on test ports. |
Use Scenario: Controlling acquisition window timing in precision 16-bit SAR ADC systems where hold capacitor settling must be disturbance-free. IC Role / Device Role / Timing Role: NO1 acts as acquisition switch; NC2 provides guarded discharge path - both synchronized to ADC CONV signal. Use Value: 7ns break-before-make guarantees no overlap between sample and hold phases; low leakage (<0.35nA) prevents hold voltage droop over 10ms intervals. |
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 |
|---|---|---|---|
| ADG741BRMZ-REEL | 4.5Ω RON max at +5V; 1.2Ω RON match; no built-in break-before-make; MSOP-8 package | Lacks guaranteed tBBM; higher RON mismatch increases gain error in matched-path designs | Prefer when break-before-make is not required and MSOP footprint is acceptable |
| TS5A23157DCUR | 0.9Ω RON typ at +3.3V; 0.15Ω match; 15ns tON/tOFF; 0.5pC charge injection; X2SON-6 package | Single-supply only to +3.6V; no +5V TTL compatibility; smaller 1.5mm × 1.5mm package | Prefer for ultra-low-RON, sub-3.3V systems where board space is critical and +5V logic is absent |
Compared with ADG741BRMZ-REEL and TS5A23157DCUR, MAX4643EUA+TG24 uniquely combines guaranteed break-before-make timing, +1.8V to +5.5V operation with TTL compatibility at 5V, and µMAX-8 packaging - making it optimal for mixed-voltage portable instrumentation requiring robust signal path reconfiguration.
Availability
MAX4643EUA+TG24 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 across extended production lifecycles.
Supply support for MAX4643EUA+TG24 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX464x family was designed specifically for low-voltage, high-speed analog signal routing in space-constrained portable systems - emphasizing rail-to-rail operation, minimal distortion, and guaranteed parametric performance across temperature and supply voltage.
FAQ
What is the maximum supply voltage rating for MAX4643EUA+TG24?
The absolute maximum supply voltage for MAX4643EUA+TG24 is +6V, but operational specifications are guaranteed only from +1.8V to +5.5V. Exceeding +5.5V risks violating the Absolute Maximum Ratings table and may cause permanent damage. For reliable long-term use, maintain V+ within the specified +4.5V to +5.5V range during functional operation, as all electrical characteristics (e.g., 4Ω RON, 0.6Ω matching) are validated in this window. The MAX4643EUA+TG24 must never be operated continuously above +5.5V.
Does MAX4643EUA+TG24 support rail-to-rail analog signals at 1.8V supply?
Yes, MAX4643EUA+TG24 supports rail-to-rail analog signal operation (0V to V+) at +1.8V supply, as confirmed in the General Description and Electrical Characteristics tables. At +1.8V, RON rises to 30Ω typical over temperature, but signal pass-through remains unclipped across the full 0V to +1.8V range. This capability enables direct interfacing with low-voltage sensors and processors without external level-shifting circuitry - a core design objective of the MAX4643EUA+TG24 family.
What is the purpose of the break-before-make timing in MAX4643EUA+TG24?
The break-before-make (tBBM) timing in MAX4643EUA+TG24 - specified as 7ns typical - ensures that the NC2 switch fully opens before NO1 closes during state transitions. This prevents momentary short-circuiting between the two analog paths, which could otherwise cause signal corruption, power rail disturbance, or latch-up in sensitive downstream circuitry. This feature is unique to the MAX4643 variant (not present in MAX4641/MAX4642) and is explicitly guaranteed in the Electrical Characteristics table under +5V conditions.
Can MAX4643EUA+TG24 be used with 3.3V logic control signals when powered from 5V?
No - MAX4643EUA+TG24 logic inputs (IN1, IN2) are not 3.3V-tolerant when V+ = 5V. The datasheet specifies VIH = 2.4V minimum and VIL = 0.8V maximum only for +5V operation, meaning full TTL/CMOS compatibility requires the control signal high level to reach ≥2.4V. While 3.3V logic outputs typically exceed this threshold, the device does not guarantee correct switching if VINH falls below 2.4V. For robust 3.3V-control operation, use V+ = 3.3V (where VIH = 2.0V min) or add a level translator. This behavior is inherent to the MAX4643EUA+TG24's internal level-shifting architecture.
How does the ESD protection structure affect leakage in MAX4643EUA+TG24?
MAX4643EUA+TG24 integrates bidirectional ESD diodes between each analog pin (NO1, NC2, COM1, COM2) and both V+ and GND. These diodes dominate the measured leakage current (<0.35nA), which flows from the analog pin to either supply rail - not between switch terminals. Leakage varies with analog signal voltage because the diodes are reverse-biased differently by V+, GND, and the signal itself. This mechanism is documented in the Applications Information section and directly defines the MAX4643EUA+TG24's leakage specification across temperature.
MAX4643EUA+TG24 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 4Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 15ns, 8ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 7pF, 7pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -97dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4643EUA+TG24 FAQ
1.How can I place an order for MAX4643EUA+TG24 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4643EUA+TG24 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 MAX4643EUA+TG24 reliable?
The price and inventory of MAX4643EUA+TG24 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4643EUA+TG24 is usually 5 days.
3.What payment methods are accepted for MAX4643EUA+TG24?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4643EUA+TG24 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4643EUA+TG24?
MAX4643EUA+TG24 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4643EUA+TG24 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 MAX4643EUA+TG24?
For technical support, including MAX4643EUA+TG24 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4643EUA+TG24 requirements.
6.How does Aetrix verify that MAX4643EUA+TG24 is sourced from the original manufacturer or authorized distributors?
All MAX4643EUA+TG24 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 MAX4643EUA+TG24 meets industry standards.
7.What is the process for return or replacement of MAX4643EUA+TG24?
All MAX4643EUA+TG24 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4643EUA+TG24, 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 MAX4643EUA+TG24 part is unused and in its original packaging.
Return procedure for MAX4643EUA+TG24:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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