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Analog Devices Inc./Maxim Integrated MAX14777GTP+T
- Part No.:
- MAX14777GTP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX14777GTP+T.pdf
- Description:
- IC SWITCH SPST-NOX4 10OHM 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:12,371
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Product details
Overview
MAX14777GTP+T 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–5.5V supply, 10Ω max on-resistance, ±60mA continuous current per channel, and independent EN1–EN4 control - used in industrial 4–20mA loop switching and precision instrumentation front-ends.
For engineers reviewing the MAX14777GTP+T datasheet, MAX14777GTP+T pinout, MAX14777GTP+T application, or MAX14777GTP+T equivalent, key selection criteria include selectable –15V/+35V vs. –15V/+15V analog range (SEL35-controlled), 9mΩ typical RON flatness over full voltage range, –40°C to +105°C operation, 50nA max on-leakage at +85°C, and TQFN-20 (4mm × 4mm) package compatibility with high-density PCB layouts.
Technical Context
The MAX14777GTP+T integrates three charge pumps (5V-regulated, VP, VN) to generate internal bias voltages, enabling true beyond-the-rails operation without external high-voltage supplies. Its SEL35 pin selects between two analog ranges: –15V/+15V (lower ICC) or –15V/+35V (higher VP output), with VP = +26V (typ) or +46V (typ) respectively.
Each of the four independent switches features bidirectional current capability (±60mA), 16pF input capacitance (A/B pins), –88dB off-isolation at 100kHz, and 380MHz –3dB bandwidth - all maintained across the full –40°C to +105°C temperature range and entire common-mode voltage span.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | Selectable: –15V/+15V (SEL35 = low) or –15V/+35V (SEL35 = high) - enables single-supply operation for wide industrial voltage inputs without level-shifting circuitry. |
| On-Resistance (RON) | 4.4Ω (typ) to 10Ω (max) - ensures minimal signal attenuation and gain error in precision measurement paths. |
| RON Flatness | 9mΩ (typ) to 150mΩ (max) - maintains consistent channel matching across full analog voltage swing, critical for THD-sensitive applications. |
| On-Leakage Current | ±50nA (max) at +85°C - preserves accuracy in high-impedance sensor interfaces and µA-level current-loop circuits. |
| Switching Speed | 40µs turn-on / 100µs turn-off (at ±10V, 10kΩ load) - supports moderate-speed multiplexing in ATE and data acquisition systems. |
| Logic Interface Supply (VL) | 1.62V to 5.5V independent reference - allows direct interfacing with 1.8V, 3.3V, or 5V microcontrollers without level translators. |
| Thermal Shutdown | 160°C threshold with 32°C hysteresis - protects device during overload or poor heatsinking in enclosed industrial enclosures. |
Pinout & Package
MAX14777GTP+T 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 layout in space-constrained industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VP) | Positive high-voltage charge-pump output | Bypassed with 10nF/50V (SEL35 = low) or 10nF/100V (SEL35 = high) capacitor; never used to power external circuitry. |
| 2 (GND) | Digital/analog ground reference | Common return for VCC, VL, and charge-pump bypass caps; must be low-impedance connection. |
| 3 (VN) | Negative high-voltage charge-pump output | Bypassed with 10nF/50V ceramic cap; EP pad must be soldered to VN for thermal and electrical performance. |
| 4 (VCC) | Main power supply (3.0V–5.5V) | Bypassed with 1µF ceramic cap; powers internal logic and charge pumps; current scales with SEL35 state. |
| 5 (I.C.) | Internally connected node | Must be tied to GND; no external connection or routing required. |
| 6–9 (A1–A4) | Analog input terminals for switches 1–4 | Accept signals from –15V to +35V; each paired with corresponding Bx terminal for SPST path. |
| 10 (SEL35) | Analog range select input | High = –15V/+35V mode; low = –15V/+15V mode; sets VP voltage and affects ICC and tON. |
| 11–15 (EN1–EN4) | Independent switch enable inputs | CMOS-compatible (VIL = 0.3×VL, VIH = 0.7×VL); high = closed path, low = open path. |
| 13 (VL) | Logic interface supply reference | Decoupled with 1µF cap; defines ENx/SEL35 logic thresholds independently of VCC. |
| 16 (N.C.) | No connection | Not internally bonded; leave unconnected and un-routed. |
| 17–20 (B4–B1) | Analog output terminals for switches 1–4 | Match A1–A4 voltage tolerance; bidirectional current flow supported up to ±60mA. |
| EP | Exposed thermal pad | Must be soldered to VN plane; not a ground connection - critical for thermal dissipation and RON stability. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ analog range | –15V to +35V operation from single 3.0V–5.5V supply eliminates need for dual ±15V rails in industrial I/O modules. |
| Selectable signal range via SEL35 | Reduces VCC supply current by >50% when operating in –15V/+15V mode, extending battery life in portable test equipment. |
| 10Ω max on-resistance with 9mΩ flatness | Minimizes gain error and distortion in precision amplifier front-ends and 4–20mA transducer conditioning circuits. |
| Independent EN1–EN4 control | Enables flexible channel sequencing and fault-isolation in multi-sensor data loggers without external logic. |
| –88dB off-isolation at 100kHz | Prevents crosstalk between active and inactive channels in high-channel-count ATE systems and modular PLCs. |
| Unpowered signal tolerance | A/B pins withstand –15V to +35V even with VCC = 0V, protecting downstream circuitry during hot-swap or power-loss events. |
Applications
| Industrial 4–20mA Loop Switching | Precision Instrumentation Front-End |
|---|---|
|
Use Scenario: Selecting between voltage and current input modes in a programmable analog input module for PLCs or DCS systems. IC Role / Device Role / Timing Role: Quad SPST switch routing 250Ω shunt resistor into signal path for current-to-voltage conversion while isolating unused paths. Use Value: Enables single-board support for both ±15V analog and 4–20mA loop inputs with <10Ω RON contribution to measurement accuracy. |
Use Scenario: Multiplexing multiple sensor outputs (RTD, thermocouple, strain gauge) into a shared precision ADC front-end. IC Role / Device Role / Timing Role: Low-leakage, low-capacitance analog switch preserving signal integrity and minimizing settling time before sampling. Use Value: 50nA max on-leakage and 16pF input capacitance prevent DC offset drift and high-frequency roll-off in µV-level measurements. |
| Automated Test Equipment (ATE) | Industrial Measurement Systems |
|
Use Scenario: Channel selection in high-speed parametric test fixtures requiring fast switching and minimal crosstalk between DUT ports. IC Role / Device Role / Timing Role: High-bandwidth (380MHz) analog switch providing clean signal routing with –101dB crosstalk at 100kHz. Use Value: Supports accurate AC parameter testing (e.g., THD+N <0.038%) without adding distortion or inter-channel interference. |
Use Scenario: Protecting sensitive measurement circuitry from overvoltage transients in factory-floor environments with variable power supplies. IC Role / Device Role / Timing Role: Fault-tolerant analog interface that remains functional and non-damaging when subjected to –15V to +35V signals during power-down. Use Value: Eliminates need for external TVS diodes or relays, reducing BOM count and board area in DIN-rail mounted measurement nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1414BRUZ | 4-channel, ±15V max analog range, 1.8Ω max RON, requires dual ±15V supplies; no integrated charge pumps. | Requires external high-voltage rails; unsuitable for single-supply –15V/+35V operation like MAX14777GTP+T. | Choose ADG1414BRUZ only if dual-supply infrastructure exists and ultra-low RON is prioritized over supply simplicity. |
| TMUX6219RTER | Quad SPST, –16.5V/+16.5V range, 3.5Ω max RON, 1.8V–5.5V logic, but no selectable high-side range or integrated VP/VN generation. | Lacks Beyond-the-Rails™ capability; cannot support +35V signals without external biasing circuitry. | Choose TMUX6219RTER for cost-sensitive, lower-voltage (<+16.5V) applications where charge-pump integration is unnecessary. |
Compared with ADG1414BRUZ and TMUX6219RTER, the MAX14777GTP+T uniquely delivers pin-selectable –15V/+35V operation from a single 3.0V–5.5V supply via integrated charge pumps - eliminating external HV rails while maintaining 10Ω RON and industrial temperature rating.
Availability
MAX14777GTP+T is available at Aetrix Electronics and suitable for industrial measurement systems, instrumentation front-ends, 4–20mA loop switching, and automated test equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX14777GTP+T 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, automotive, and communications applications, with expertise in precision timing, power management, and interface solutions.
The MAX14777GTP+T belongs to Maxim's Beyond-the-Rails™ analog switch family, engineered specifically for single-supply industrial I/O conditioning where signals exceed conventional rail limits - targeting programmable logic controllers, process analyzers, and modular data acquisition systems.
FAQ
What is the maximum analog signal voltage the MAX14777GTP+T can handle?
The MAX14777GTP+T supports a pin-selectable analog signal range: –15V to +15V when SEL35 is low, and –15V to +35V when SEL35 is high. This is enabled by internal charge pumps generating VP and VN. Absolute maximum ratings allow |A–B| ≤ 70V, but operational range is limited to the selected mode. The device tolerates these voltages even when unpowered (VCC = 0V), making it robust for hot-swap scenarios.
Does the MAX14777GTP+T require external capacitors, and if so, what values?
Yes, the MAX14777GTP+T requires three external bypass capacitors: a 1µF ceramic capacitor on VCC, a 1µF ceramic capacitor on VL, and two 10nF ceramic capacitors - one between VP and GND, and one between VN and GND. For VP, use a 50V-rated capacitor if SEL35 = low, or a 100V-rated capacitor if SEL35 = high. The VN capacitor must be rated for at least 50V. These capacitors must be placed as close as possible to their respective pins.
How does the SEL35 pin affect power consumption and performance of the MAX14777GTP+T?
When SEL35 is low, the MAX14777GTP+T operates in –15V/+15V mode with VP ≈ +26V (typ), reducing VCC supply current to 0.6–1.2mA (at VCC = 5.5V). When SEL35 is high, it enables –15V/+35V mode with VP ≈ +46V (typ), increasing ICC to 0.8–1.65mA. Turn-on time is also slightly faster in SEL35 = low mode. Thus, SEL35 trades higher analog range for increased supply current and marginally slower switching.
Can the MAX14777GTP+T be used in a system without a dedicated negative supply?
Yes - the MAX14777GTP+T generates its own negative bias (VN ≈ –16V) using an internal charge pump, eliminating the need for an external negative supply. All analog signals from –15V to +35V are handled with only a single positive VCC supply (3.0V–5.5V) and VL logic reference. This makes it ideal for single-rail industrial systems where adding a negative rail is impractical or costly.
What is the thermal performance of the MAX14777GTP+T in its TQFN package?
The MAX14777GTP+T in its 20-pin TQFN-EP (4mm × 4mm) package has a junction-to-ambient thermal resistance (θJA) of 39°C/W and junction-to-case (θJC) of 6°C/W when mounted on a standard 4-layer board per JEDEC JESD51-7. The exposed pad (EP) must be soldered to the VN net for optimal thermal conduction. Thermal shutdown activates at +160°C with +32°C hysteresis, protecting the MAX14777GTP+T during sustained overload conditions.
MAX14777GTP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX14777GTP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14777GTP+T 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+T reliable?
The price and inventory of MAX14777GTP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14777GTP+T is usually 5 days.
3.What payment methods are accepted for MAX14777GTP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14777GTP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14777GTP+T?
MAX14777GTP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14777GTP+T 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+T?
For technical support, including MAX14777GTP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14777GTP+T requirements.
6.How does Aetrix verify that MAX14777GTP+T is sourced from the original manufacturer or authorized distributors?
All MAX14777GTP+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX14777GTP+T?
All MAX14777GTP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14777GTP+T, 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+T part is unused and in its original packaging.
Return procedure for MAX14777GTP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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