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Analog Devices Inc./Maxim Integrated MAX14774ATP+T
- Part No.:
- MAX14774ATP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX14774ATP+T.pdf
- Description:
- QUAD SPST / DUAL SPDT BEYOND-THE
- Quantity:
- Payment:
- Shipping:
Inventory:4,899
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Product details
Overview
MAX14774ATP+T from Analog Devices is a quad single-pole single-throw (SPST) beyond-the-rails analog switch supporting ±25V analog signal range with a single 3.0V to 5.5V supply, 2.5Ω max on-resistance at +85°C, ±100nA max on-leakage at +85°C, and -40°C to +125°C operation - used in ATE systems for high-voltage signal routing between USB, CAN, and RS-485 transceivers.
For engineers reviewing the MAX14774ATP+T datasheet, MAX14774ATP+T pinout, MAX14774ATP+T application, or MAX14774ATP+T equivalent, key selection considerations include its quad SPST topology, independent enable control per switch, ±25V beyond-the-rails capability, 147MHz signal bandwidth, and TQFN-20 package compatibility with high-density industrial PCB layouts.
Technical Context
The MAX14774ATP+T integrates three on-chip charge pumps (5V-regulated, VP, VN) to generate internal bias voltages enabling ±25V analog switching from a single low-voltage supply; VP reaches +33V (typ), VN reaches -27V (typ), and analog terminals remain functional even when unpowered due to internal diode clamping.
Its four independent EN1–EN4 digital inputs accept flexible logic levels (1.62V to 5.5V via VL pin), decoupled from VCC, allowing direct interface with mixed-voltage microcontrollers; each switch supports bidirectional ±200mA continuous current and features short-circuit protection with thermal shutdown at +162°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±25V - enables direct switching of RS-485, CAN, audio, and instrumentation signals without external level-shifting circuitry. |
| On-Resistance (max) | 2.5Ω at +85°C - ensures minimal voltage drop and power loss across switches carrying up to ±200mA. |
| On-Leakage Current (max) | ±100nA at +85°C - preserves signal integrity in precision measurement paths by minimizing DC error injection. |
| Signal Bandwidth | 147MHz (typ) - supports high-speed data lines including full-speed USB (12Mbps) and fast serial interfaces. |
| Supply Voltage Range | VCC = 3.0V to 5.5V; VL = 1.62V to 5.5V - allows interoperability with 1.8V, 3.3V, and 5V logic domains without level translators. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment test equipment. |
| Package | 20-pin TQFN (4mm × 4mm) - provides compact footprint and low thermal resistance (θJA = 33°C/W on 4-layer board). |
Pinout & Package
MAX14774ATP+T is housed in a 20-pin, 4mm × 4mm TQFN package with exposed pad (EP) connected to VN. Pin 1 is VP; pins 2 and EP are GND; pin 4 is VCC; pin 13 is VL; pins 6–9 and 17–20 are analog I/O (A1–A4, B1–B4); pins 11–15 are digital enables (EN1–EN4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VP (Pin 1) | Positive charge-pump output | Provides +33V (typ) bias for high-side switch operation; requires 10nF/100V ceramic bypass to GND. |
| GND (Pin 2, EP) | Ground reference | Primary return path for analog, digital, and charge-pump circuits; EP must be soldered to VN plane for thermal and electrical performance. |
| VN (Pin 3) | Negative charge-pump output | Provides -27V (typ) bias for low-side switch operation; requires 10nF/100V ceramic bypass to GND. |
| VCC (Pin 4) | Main power supply input | Accepts 3.0V–5.5V; powers internal logic and charge pumps; bypass with 1µF ceramic capacitor. |
| I.C. (Pin 5) | Internally connected node | Must be tied to GND; not functional as user-accessible terminal. |
| A1–A4 (Pins 6–9) | Analog switch terminals (source) | Independent SPST inputs; each connects to corresponding Bx terminal when respective ENx is high. |
| B1–B4 (Pins 19,20,18,17) | Analog switch terminals (output) | Independent SPST outputs; routed to A1–A4 respectively upon enable activation. |
| EN1–EN4 (Pins 11,12,14,15) | Digital enable inputs | CMOS-compatible; drive high to close corresponding switch; logic thresholds set by VL voltage. |
| VL (Pin 13) | Logic supply input | Sets ENx input thresholds (VIL = 0.3×VL, VIH = 0.7×VL); enables interfacing with 1.8V/2.5V/3.3V/5V controllers. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-rails operation | Supports ±25V analog signals with only 3.0V–5.5V VCC - eliminates need for dual supplies or external charge pumps in high-voltage routing. |
| Independent per-switch enable | Four dedicated EN1–EN4 inputs allow granular control of signal paths without shared logic dependencies - critical for fault-isolated ATE configurations. |
| Short-circuit protected switches | Each switch limits current during overcurrent events and includes thermal shutdown at +162°C - prevents latch-up and damage in transient fault conditions. |
| Unpowered signal tolerance | A/B pins withstand ±25V even with VCC = 0V due to internal VP/VN diode clamping - enables hot-swap and fail-safe behavior in powered-down subsystems. |
| Low charge injection (780pC) | Minimizes voltage glitches at switch nodes during state transitions - essential for precision ADC multiplexing and sample-hold applications. |
Applications
| ATE Signal Routing | Industrial Bus Multiplexing |
|---|---|
Use Scenario: Automated test equipment routes multiple DUT signals (USB, CAN, RS-485) through shared connector hardware using dynamic reconfiguration. IC Role / Device Role / Timing Role: Quad SPST switch providing isolated, high-voltage signal paths between transceivers and DUT ports under software control. Use Value: Enables single-board support for heterogeneous bus standards without external level shifters or relays - reducing test head complexity and calibration drift. | Use Scenario: PLC backplane dynamically selects between redundant RS-485 communication channels or isolates faulty segments during runtime. IC Role / Device Role / Timing Role: High-reliability analog switch managing differential bus termination and fail-safe biasing under real-time control. Use Value: Supports hot-swappable fieldbus modules with ±200mA current handling and thermal protection - eliminating manual jumper changes and downtime. |
| Audio Path Selection | Instrumentation Multiplexer |
Use Scenario: Audio test system switches between multiple amplifier outputs (single-ended and differential) into a common analyzer input. IC Role / Device Role / Timing Role: Low-distortion, wide-dynamic-range analog switch preserving THD+N and SNR across ±10V audio signals. Use Value: Delivers 147MHz bandwidth and <18mΩ on-resistance flatness - maintaining fidelity for 20Hz–20kHz full-scale measurements without gain/offset recalibration. | Use Scenario: Precision multimeter front-end multiplexes high-impedance sensor inputs (thermocouples, strain gauges) while rejecting leakage-induced offset errors. IC Role / Device Role / Timing Role: Ultra-low-leakage (±100nA max) SPST switch isolating sensitive nodes from switching transients and crosstalk. Use Value: Ensures sub-µV baseline stability in 6½-digit measurements by minimizing off-state leakage and charge injection artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14779ATP+ | Dual SPDT configuration with break-before-make timing (289–500µs); higher ±200nA on-leakage; 78MHz bandwidth. | Optimized for bidirectional signal routing (e.g., ACOM↔A1/A2) rather than independent SPST paths. | Select MAX14779ATP+ when SPDT topology and COM-to-throw switching are required; not pin-compatible with MAX14774ATP+T. |
| ADG5412FBRUZ | Quad SPST with integrated fault protection (±40V continuous, ±60V transient); 12Ω on-resistance; no internal charge pumps - requires ±15V dual supply. | Targeted at high-energy industrial environments where overvoltage robustness outweighs supply simplicity. | Choose ADG5412FBRUZ when fault-tolerant operation under sustained overvoltage is mandatory; incompatible supply architecture. |
Compared with MAX14779ATP+, MAX14774ATP+T offers superior on-leakage performance and higher bandwidth for independent channel routing; compared with ADG5412FBRUZ, it eliminates dual-supply complexity but trades off absolute fault voltage rating for integrated bias generation.
Availability
MAX14774ATP+T is available at Aetrix Electronics and suitable for automated test equipment, industrial bus multiplexing, and precision instrumentation requiring stable component supply across extended temperature and high-voltage operating conditions.
Supply support for MAX14774ATP+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX14774ATP+T belongs to Analog Devices' Beyond-The-Rails™ analog switch family, engineered specifically for high-voltage signal routing in single-supply systems where traditional CMOS switches fail - targeting ATE, factory automation, and test-and-measurement instrumentation.
FAQ
What is the maximum analog signal voltage supported by the MAX14774ATP+T?
The MAX14774ATP+T supports an analog signal range of ±25V, enabled by internal charge pumps generating VP ≈ +33V and VN ≈ -27V. This allows the device to pass signals beyond the VCC supply rails - critical for interfacing with RS-485, CAN, and industrial sensor outputs without external level-shifting circuitry. The specification is guaranteed over the full -40°C to +125°C temperature range.
Does the MAX14774ATP+T require external capacitors, and if so, what values?
Yes, the MAX14774ATP+T requires two external 10nF/100V ceramic capacitors: one between VP (Pin 1) and GND, and another between VN (Pin 3) and GND. These capacitors stabilize the internal high-voltage charge pumps. Additionally, a 1µF ceramic capacitor is required between VCC (Pin 4) and GND, and another 1µF capacitor between VL (Pin 13) and GND. All bypass capacitors must be placed as close as possible to their respective pins.
Can the MAX14774ATP+T operate with different logic voltage levels than its VCC supply?
Yes, the MAX14774ATP+T features a dedicated VL pin (Pin 13) that sets logic thresholds independently of VCC. VL accepts 1.62V to 5.5V, allowing direct interface with 1.8V, 2.5V, 3.3V, or 5V controllers without level translators. Input thresholds are VIL = 0.3×VL and VIH = 0.7×VL, ensuring robust noise immunity across mixed-voltage systems - a key advantage confirmed in the MAX14774ATP+T datasheet's Electrical Characteristics table.
What happens to the MAX14774ATP+T analog terminals when VCC is unpowered?
When VCC = 0V, the MAX14774ATP+T analog terminals (A1–A4, B1–B4) remain tolerant to ±25V due to internal diodes connecting to VP and VN. Under DC conditions with |VA – VB| > 3V, the switch stays open with ±5µA max power-off leakage. Under transient conditions, applied voltages charge the VP/VN bypass capacitors, enabling limited functionality - a documented fail-safe behavior critical for hot-swap and maintenance scenarios involving the MAX14774ATP+T.
Is the MAX14774ATP+T pin-compatible with other devices in the MAX14774/MAX14779 family?
No, the MAX14774ATP+T is not pin-compatible with the MAX14779ATP+ despite sharing the same 20-pin TQFN package. Their pin functions differ significantly: MAX14774ATP+T uses EN1–EN4 for independent SPST control, while MAX14779ATP+ uses ENA/ENB/SA/SB for SPDT operation. Pin assignments for analog I/O (e.g., A1–A4 vs. ACOM/BCOM) and control inputs are mutually exclusive - PCB layout must be designed specifically for the MAX14774ATP+T.
MAX14774ATP+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):
- 2.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 18mOhm
- Voltage - Supply, Single (V+):
- 3V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 60µs, 160µs
- -3db Bandwidth:
- 147MHz
- Charge Injection:
- 780pC
- Channel Capacitance (CS(off), CD(off)):
- 31pF, 31pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (4x4)
MAX14774ATP+T FAQ
1.How can I place an order for MAX14774ATP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14774ATP+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 MAX14774ATP+T reliable?
The price and inventory of MAX14774ATP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14774ATP+T is usually 5 days.
3.What payment methods are accepted for MAX14774ATP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14774ATP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14774ATP+T?
MAX14774ATP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14774ATP+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 MAX14774ATP+T?
For technical support, including MAX14774ATP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14774ATP+T requirements.
6.How does Aetrix verify that MAX14774ATP+T is sourced from the original manufacturer or authorized distributors?
All MAX14774ATP+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 MAX14774ATP+T meets industry standards.
7.What is the process for return or replacement of MAX14774ATP+T?
All MAX14774ATP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14774ATP+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 MAX14774ATP+T part is unused and in its original packaging.
Return procedure for MAX14774ATP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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