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Analog Devices Inc./Maxim Integrated MAX14777GTP+
- Part No.:
- MAX14777GTP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX14777GTP+.pdf
- Description:
- IC SWITCH SPST-NOX4 10OHM 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,881
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Product details
Overview
MAX14777GTP+ from Maxim Integrated is a quad SPST analog switch enabling rail-to-rail and beyond-the-rails signal switching (–15V to +35V) with a single 3.0V to 5.5V supply. It features 10Ω max on-resistance, ±50nA max on-leakage at +85°C, 60mA continuous current per channel, and independent EN1–EN4 control for industrial measurement, 4–20mA loop switching, and ATE systems.
For engineers reviewing the MAX14777GTP+ datasheet, MAX14777GTP+ pinout, MAX14777GTP+ application, or MAX14777GTP+ equivalent, key selection criteria include selectable –15V/+15V or –15V/+35V analog range via SEL35, TQFN-20 (4mm × 4mm) package compatibility, high-voltage charge-pump biasing (VP/VN), and leakage performance across –40°C to +105°C.
Technical Context
The MAX14777GTP+ integrates three charge pumps-5V regulated, positive high-voltage (VP), and negative high-voltage (VN)-to support analog signals beyond supply rails. VP ranges from +22.5V to +49.8V and VN from –18.2V to –14.9V depending on SEL35 state, enabling true bipolar and extended unipolar operation without external bias supplies.
Each of the four SPST switches operates independently with logic-level control referenced to VL (1.62V–5.5V), allowing flexible interface to diverse microcontrollers. RON flatness remains ≤150mΩ over full analog voltage range (–15V to +35V), and off-isolation reaches –88dB at 100kHz with VCC powered, ensuring minimal crosstalk in precision instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | ≤10Ω max ensures low insertion loss and minimal signal distortion in precision analog paths. |
| Analog signal range | Selectable –15V/+15V (SEL35 = low) or –15V/+35V (SEL35 = high) enables single-supply operation in industrial voltage/current sensing. |
| Continuous current per switch | ±60mA supports 4–20mA loop switching and direct connection to 250Ω shunt resistors. |
| On-leakage current | ±50nA max at +85°C maintains accuracy in high-impedance sensor front-ends and measurement circuits. |
| Logic interface supply (VL) | 1.62V–5.5V range allows direct interfacing with 1.8V, 3.3V, or 5V controllers without level shifters. |
| Operating temperature | –40°C to +105°C rating qualifies for industrial and automotive under-hood environments. |
| –3dB bandwidth | 380MHz supports fast transient response and wideband signal routing in ATE test equipment. |
Pinout & Package
MAX14777GTP+ is housed in a 20-pin TQFN-EP package (4mm × 4mm, 0.5mm pitch) with exposed pad connected to VN. The package supports high thermal efficiency (θJA = 39°C/W) and compact PCB layout for space-constrained industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VP (Pin 1) | Positive high-voltage charge-pump output | Generates +22.5V to +49.8V bias for high-side switch conduction; requires 10nF bypass capacitor (50V/100V rated). |
| VN (Pin 3) | Negative high-voltage charge-pump output | Generates –18.2V to –14.9V bias for low-side conduction; requires 10nF 50V ceramic capacitor. |
| A1–A4 (Pins 6–9) | Analog input terminals (switch side A) | Accept –15V to +35V signals; each controlled independently by corresponding EN_ pin. |
| B1–B4 (Pins 17–20) | Analog output terminals (switch side B) | Deliver switched analog signals to downstream circuitry; bidirectional current path up to ±60mA. |
| EN1–EN4 (Pins 11,12,14,15) | Independent switch enable inputs | CMOS-compatible control lines referenced to VL; drive high to close respective switch. |
| SEL35 (Pin 10) | Analog range select input | Configures device for –15V/+15V (low) or –15V/+35V (high); also affects VCC supply current and VP voltage. |
| VL (Pin 13) | Logic interface reference supply | Sets input thresholds for EN_/SEL35; decoupled with 1µF capacitor to ensure noise-immune digital control. |
| VCC (Pin 4) | Main power supply input | 3.0V–5.5V supply powering internal logic and charge pumps; bypassed with 1µF ceramic capacitor. |
| GND (Pin 2) | Ground reference | Primary return path for analog and digital circuitry; connects to PCB ground plane. |
| I.C. (Pin 5) | Internally connected | Internal node; must be connected to GND per datasheet to ensure proper bias generation. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ analog range | Supports –15V to +35V signals with single 3.0V–5.5V supply, eliminating need for dual or high-voltage auxiliary rails. |
| Selectable high-voltage range | SEL35 pin toggles between –15V/+15V (lower ICC) and –15V/+35V (extended range), optimizing trade-off between performance and power. |
| Low RON flatness | ≤150mΩ variation across full analog voltage range preserves signal linearity in precision measurement applications. |
| High off-isolation | –88dB at 100kHz prevents signal coupling between inactive channels in multi-channel ATE and data acquisition systems. |
| Unpowered signal tolerance | A/B pins withstand –15V to +35V when VCC = 0V, enabling safe hot-swap and fault-tolerant system design. |
Applications
| Industrial Measurement Systems | Instrumentation Systems |
|---|---|
Use Scenario: Switching between voltage and current input modes in a programmable analog input module for PLC I/O cards. IC Role / Device Role / Timing Role: Quad SPST switch routing ±15V analog signals or 4–20mA loop current through shared signal conditioning path. Use Value: Enables single-board support for both voltage and current measurement using one MAX14777GTP+, reducing BOM count and PCB area. | Use Scenario: Multiplexing multiple sensor outputs (thermocouples, RTDs, strain gauges) into a shared high-precision ADC front-end. IC Role / Device Role / Timing Role: Low-leakage, low-RON analog switch isolating high-impedance sensor nodes during sampling. Use Value: ±50nA on-leakage and ≤10Ω RON preserve measurement accuracy across –40°C to +105°C operating range. |
| 4–20mA Switching | ATE Systems |
Use Scenario: Inserting/removing 250Ω shunt resistor in industrial current-loop transmitters to convert 4–20mA to 1–5V for monitoring. IC Role / Device Role / Timing Role: Bidirectional SPST switch handling up to ±60mA DC current while maintaining <10Ω on-resistance. Use Value: Eliminates mechanical relays or opto-isolators, improving reliability and lifetime in field-deployed loop-powered devices. | Use Scenario: Signal routing and stimulus injection in automated test equipment for semiconductor parametric testing. IC Role / Device Role / Timing Role: High-bandwidth (380MHz) analog switch providing fast, low-distortion path for test signals and responses. Use Value: –101dB crosstalk and 0.038% THD+N ensure signal fidelity during high-speed functional validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14778GTP+ | Dual SPST configuration; identical –15V/+35V range, RON, and thermal specs but half the channel count. | Used where only two independent switches needed; smaller footprint not required due to same 20-pin TQFN package. | Select MAX14778GTP+ when quad functionality is unnecessary and board space is constrained by other components-not by switch count. |
| ADG5412BRUZ | Quad SPST with ±40V signal range, 12Ω RON, higher 100nA on-leakage at +85°C, and no integrated charge pumps (requires external ±15V supplies). | Suitable for systems already providing dual-rail supplies; not viable for single-supply industrial designs needing Beyond-the-Rails operation. | Choose ADG5412BRUZ only if external high-voltage rails exist and leakage budget allows >2× MAX14777GTP+ on-leakage. |
Compared with MAX14778GTP+, the MAX14777GTP+ delivers double channel density in identical footprint; versus ADG5412BRUZ, it eliminates external bias supplies and cuts on-leakage by 50%, making it superior for single-supply, high-accuracy industrial measurement.
Availability
MAX14777GTP+ is available at Aetrix Electronics and suitable for industrial measurement systems, 4–20mA loop switching, and ATE systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX14777GTP+ 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 high-performance analog and mixed-signal ICs for industrial, communications, and computing applications, emphasizing integration, reliability, and energy efficiency.
The MAX14777GTP+ belongs to Maxim's Beyond-the-Rails™ analog switch family, engineered specifically for single-supply industrial signal conditioning where signals exceed VCC/GND rails-enabling simplified power architecture in PLCs, DAQ modules, and process control systems.
FAQ
What is the maximum analog signal voltage the MAX14777GTP+ can handle?
The MAX14777GTP+ supports analog signals from –15V to +35V when SEL35 is high, or –15V to +15V when SEL35 is low. This is achieved using integrated VP and VN charge pumps, eliminating need for external high-voltage supplies. Absolute maximum ratings allow |A–B| ≤ 70V, and A/B pins tolerate –15V to +35V even when unpowered (VCC = 0V).
Does the MAX14777GTP+ require external capacitors, and if so, what values and ratings?
Yes, the MAX14777GTP+ requires three external capacitors: a 1µF ceramic capacitor on VCC, a 1µF ceramic capacitor on VL, and two 10nF ceramic capacitors-one from VP to GND and one from VN to GND. The VP capacitor must be rated for 50V if SEL35 = low, or 100V if SEL35 = high; the VN capacitor must be rated for 50V. All capacitors must be placed as close as possible to their respective pins.
How does the SEL35 pin affect power consumption and analog range in the MAX14777GTP+?
When SEL35 is low, the MAX14777GTP+ configures for –15V/+15V analog range and draws lower VCC supply current (e.g., 0.6–1.2mA at VCC = 5.5V). When SEL35 is high, it enables –15V/+35V range but increases VCC current (e.g., 0.8–1.65mA at VCC = 5.5V) due to higher VP voltage generation. This trade-off allows designers to optimize between signal range and power in battery- or thermally constrained systems.
Can the MAX14777GTP+ operate with different logic and supply voltages, such as 3.3V VCC and 1.8V control signals?
Yes. The MAX14777GTP+ features separate VL and VCC supplies. VL (1.62V–5.5V) sets logic thresholds for EN1–EN4 and SEL35, allowing direct interface with 1.8V, 2.5V, or 3.3V controllers. VCC (3.0V–5.5V) powers internal circuitry and charge pumps. With VL = 1.8V and VCC = 3.3V, the device maintains full –15V/+35V analog range and 10Ω RON performance.
What is the thermal shutdown behavior of the MAX14777GTP+?
The MAX14777GTP+ incorporates thermal shutdown that activates at +160°C junction temperature (TSHDN) with +32°C hysteresis. When triggered, the device disables all switches and reduces internal power dissipation until temperature falls below +128°C, at which point normal operation resumes. This protects against sustained overtemperature conditions in enclosed industrial enclosures or high-current operation.
MAX14777GTP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Beyond-the-Rails™
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 10Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm (Max)
- Voltage - Supply, Single (V+):
- 3V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 40µs, 100µs
- -3db Bandwidth:
- 380MHz
- Charge Injection:
- 225pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF
- Current - Leakage (IS(off)) (Max):
- 20nA
- Crosstalk:
- -101dB @ 100kHz
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (4x4)
MAX14777GTP+ FAQ
1.How can I place an order for MAX14777GTP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14777GTP+ 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 MAX14777GTP+ reliable?
The price and inventory of MAX14777GTP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14777GTP+ is usually 5 days.
3.What payment methods are accepted for MAX14777GTP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14777GTP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14777GTP+?
MAX14777GTP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14777GTP+ 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 MAX14777GTP+?
For technical support, including MAX14777GTP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14777GTP+ requirements.
6.How does Aetrix verify that MAX14777GTP+ is sourced from the original manufacturer or authorized distributors?
All MAX14777GTP+ 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 MAX14777GTP+ meets industry standards.
7.What is the process for return or replacement of MAX14777GTP+?
All MAX14777GTP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14777GTP+, 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 MAX14777GTP+ part is unused and in its original packaging.
Return procedure for MAX14777GTP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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