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Texas Instruments SN65240PWRG4
- Part No.:
- SN65240PWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Mixed Technology
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65240PWRG4.pdf
- Description:
- TVS DEVICE MIXED 7V 8-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,972
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Product details
Overview
SN65240PWRG4 from Texas Instruments is a quadruple unidirectional transient voltage suppressor (TVS) IC designed for ESD protection of USB full-speed and low-speed data lines (D+, D−). It features 6.5-V minimum breakdown voltage, 35-pF typical input capacitance, ≤1-µA leakage at 6 V, −40°C to 85°C operating range, and TSSOP-8 package with four protected channels.
For engineers reviewing the SN65240PWRG4 datasheet, SN65240PWRG4 pinout, SN65240PWRG4 application, or SN65240PWRG4 equivalent, this page delivers verified electrical parameters, real-world USB port protection context, thermal and layout guidance, and validated alternative options for robust I/O hardening in embedded and peripheral designs.
Technical Context
The SN65240PWRG4 integrates four independent unidirectional TVS diodes in a single monolithic silicon structure, each configured as a Zener-clamped bipolar transistor–diode hybrid. Its switching behavior is defined by a 6.5-V Zener-triggered conduction path for positive transients and forward-biased diode clamping for negative transients.
It operates passively without external bias or supply, relying solely on transient overvoltage to activate clamping. The device's 35-pF input capacitance and 1-µA leakage are optimized for USB 1.1 full-speed (12 Mbps) and low-speed (1.5 Mbps) signaling integrity-making it unsuitable for USB 2.0 high-speed (480 Mbps) due to bandwidth limitations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 6.5 V min - Ensures clamping activates above USB 5-V VBUS and transceiver supply rails without false triggering during normal operation. |
| Input Capacitance | 35 pF typical - Maintains signal integrity for USB full-speed (12 Mbps) but exceeds acceptable limits for USB 2.0 high-speed compliance. |
| Leakage Current | ≤1 µA at 6 V - Minimizes standby power loss and avoids loading effects on weak-signal USB data lines. |
| ESD Protection | ±15-kV HBM - Meets IEC 61000-4-2 system-level ESD requirements when implemented with proper PCB layout and grounding. |
| Operating Temperature | −40°C to +85°C - Supports industrial-grade USB host, hub, and peripheral applications across extended ambient conditions. |
| Peak Power Dissipation | 60 W - Handles short-duration ESD pulses (e.g., 15-kV HBM) without thermal runaway or permanent degradation. |
Pinout & Package
TSSOP-8 (PW) package: 3.0 mm × 4.4 mm body, 1.2 mm max height, lead pitch 0.65 mm, RoHS-compliant NiPdAu finish, MSL Level-1 (260°C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Analog input | Transient suppressor input for USB D+ line - connects directly to upstream/downstream transceiver D+ pin. |
| B | Analog input | Transient suppressor input for USB D− line - pairs with Pin A to protect differential data pair. |
| C | Analog input | Transient suppressor input for third channel - unused in standard USB port but supports dual-port or auxiliary I/O protection. |
| D | Analog input | Transient suppressor input for fourth channel - enables simultaneous protection of two USB ports or mixed-signal interfaces. |
| GND (Pins 1, 3, 5, 7) | Power | Four dedicated ground terminals - reduce inductance and improve clamping response by providing parallel low-impedance return paths to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Quadruple unidirectional TVS architecture | Four independent clamping paths enable protection of dual USB ports or multi-line interfaces without cross-talk or shared impedance. |
| Low 35-pF input capacitance | Preserves USB full-speed rise/fall times and eye diagram integrity while avoiding signal distortion or timing jitter. |
| 1-µA max leakage at 6 V | Prevents DC loading of USB data lines, ensuring reliable SE0/SE1 state detection and bus enumeration in low-power modes. |
| 6.5-V minimum breakdown voltage | Provides 1.5-V margin above 5-V USB VBUS and transceiver supply rails, preventing premature conduction during normal operation. |
| Four GND pins | Reduces effective ground inductance by >50% vs. single-GND packages, enabling faster transient energy shunting and lower clamping overshoot. |
Applications
| USB Full-Speed Host Port | USB Full-Speed Hub Port |
|---|---|
Use Scenario: Protecting the D+/D− lines of a desktop PC or embedded controller USB host controller from user-handled ESD events during cable insertion/removal. IC Role / Device Role / Timing Role: Unidirectional transient suppressor placed between USB connector and transceiver IC, clamping ±15-kV HBM strikes before they reach sensitive PHY circuitry. Use Value: Enables reliable hot-plug operation in consumer and industrial environments where ESD exposure exceeds internal transceiver ratings (typically ≤4-kV HBM). |
Use Scenario: Hardening downstream-facing ports on a USB 2.0 hub IC against repeated ESD stress from peripheral attachment/detachment. IC Role / Device Role / Timing Role: Channel-isolated TVS array protecting each hub port's D+/D− pair independently, preserving signal fidelity across all active ports. Use Value: Prevents cumulative ESD damage that degrades hub reliability over time-critical for multi-peripheral docking stations and industrial control panels. |
| USB Low-Speed Peripheral | Industrial USB Device Interface |
Use Scenario: Securing D+/D− lines of a USB keyboard, mouse, or HID sensor node operating at 1.5 Mbps in office or factory settings. IC Role / Device Role / Timing Role: Standoff-voltage-matched TVS (6.5 V) placed adjacent to USB receptacle to clamp transients before reaching low-voltage CMOS ASIC. Use Value: Extends product lifecycle by eliminating field failures caused by electrostatic discharge during routine handling and maintenance. |
Use Scenario: Adding robustness to USB-based firmware update or diagnostics interfaces on programmable logic controllers (PLCs) or motor drives. IC Role / Device Role / Timing Role: Quadruple TVS used across both primary and service USB ports, leveraging four-channel integration to minimize board space and BOM count. Use Value: Reduces need for discrete TVS arrays while maintaining compliance with IEC 61000-4-2 Level 4 (±8-kV contact) in harsh electromagnetic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65240PWR | Identical electrical specs and pinout; differs only in packaging marking (no "G4" suffix) and RoHS compliance documentation status. | No functional difference; both rated for −40°C to +85°C and qualified for same USB full/low-speed use cases. | Select SN65240PWR if RoHS documentation traceability is required per procurement policy; otherwise SN65240PWRG4 is functionally interchangeable. |
| TPD2E001DRSR | Double-channel, 15-pF capacitance, ±8-kV IEC 61000-4-2 rating; smaller 2-mm × 2-mm SON-6 package. | Better suited for space-constrained single-port USB designs requiring higher IEC-rated protection, but lacks fourth channel. | Choose TPD2E001DRSR when board area is critical and only one USB port needs protection; SN65240PWRG4 remains optimal for dual-port or legacy design continuity. |
Compared with SN65240PWR, SN65240PWRG4 offers identical performance and compatibility but reflects updated TI manufacturing and compliance labeling; versus TPD2E001DRSR, it trades lower capacitance for channel count and legacy USB 1.1 optimization-making it preferable for multi-port industrial hubs and host controllers where layout headroom exists.
Availability
SN65240PWRG4 is available at Aetrix Electronics and suitable for USB full-speed host controllers, industrial USB hub modules, and embedded peripheral interface designs requiring stable component supply, long-term lifecycle support, and consistent ESD hardening performance.
Supply support for SN65240PWRG4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in interface protection and USB system solutions.
The SN65240PWRG4 belongs to TI's USB port transient suppressor family, engineered specifically to extend the ruggedness of legacy USB 1.1 implementations in industrial, computing, and peripheral equipment where cost-effective, proven ESD resilience is essential.
FAQ
What is the primary function of the SN65240PWRG4 in a USB interface?
The SN65240PWRG4 serves as a quadruple unidirectional transient voltage suppressor, protecting USB D+ and D− data lines from ESD and electrical noise transients. It clamps overvoltage events above 6.5 V while maintaining low 35-pF capacitance and ≤1-µA leakage-ensuring signal integrity for USB full-speed (12 Mbps) and low-speed (1.5 Mbps) operation. Its design prevents damage to downstream USB transceivers and ASICs.
Can the SN65240PWRG4 be used for USB 2.0 high-speed (480 Mbps) applications?
No, the SN65240PWRG4 is not suitable for USB 2.0 high-speed applications. Its 35-pF typical input capacitance introduces excessive signal attenuation and timing skew at 480 Mbps, violating USB 2.0 eye diagram and jitter specifications. The datasheet explicitly states it is intended for USB low- and full-speed only. For high-speed USB, lower-capacitance alternatives like TPD2EUSB30 or USB3XXX series must be used instead of SN65240PWRG4.
How many independent protection channels does the SN65240PWRG4 provide?
The SN65240PWRG4 provides four independent unidirectional transient suppression channels labeled A, B, C, and D. Pins A and B protect one differential pair (e.g., D+/D− of Port 1), while Pins C and D can protect a second USB port or auxiliary I/O lines. All four channels share common ground connections via Pins 1, 3, 5, and 7-enabling flexible routing and multi-port protection without additional components.
What is the significance of the four GND pins on the SN65240PWRG4 TSSOP-8 package?
The four dedicated GND pins (1, 3, 5, 7) on the SN65240PWRG4 significantly reduce ground path inductance compared to single-GND TVS devices. This lowers clamping voltage overshoot during fast ESD transients (e.g., 15-kV HBM) and improves energy shunting efficiency. Layout best practices require connecting all four GND pins directly to a solid PCB ground plane using multiple vias-ensuring optimal performance that cannot be achieved with fewer ground terminals in the SN65240PWRG4.
Does the SN65240PWRG4 require an external power supply to operate?
No, the SN65240PWRG4 requires no external power supply. It is a passive silicon TVS device composed of integrated Zener diodes and bipolar transistor structures that activate solely in response to overvoltage transients on its input pins (A, B, C, D). Its operation depends only on the magnitude and polarity of the applied transient-not on any bias voltage or current. This makes SN65240PWRG4 inherently compatible with all USB power domains and simplifies system-level implementation.
SN65240PWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Clamping:
- 7V
- Technology:
- Mixed Technology
- Number of Circuits:
- 1
- Applications:
- USB
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
SN65240PWRG4 FAQ
1.How can I place an order for SN65240PWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65240PWRG4 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 SN65240PWRG4 reliable?
The price and inventory of SN65240PWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65240PWRG4 is usually 5 days.
3.What payment methods are accepted for SN65240PWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65240PWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65240PWRG4?
SN65240PWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65240PWRG4 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 SN65240PWRG4?
For technical support, including SN65240PWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65240PWRG4 requirements.
6.How does Aetrix verify that SN65240PWRG4 is sourced from the original manufacturer or authorized distributors?
All SN65240PWRG4 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 SN65240PWRG4 meets industry standards.
7.What is the process for return or replacement of SN65240PWRG4?
All SN65240PWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN65240PWRG4, 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 SN65240PWRG4 part is unused and in its original packaging.
Return procedure for SN65240PWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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