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Texas Instruments SN65220DBVTG4
- Part No.:
- SN65220DBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Mixed Technology
- Package:
- SOT-23-6
- Datasheet:
-
SN65220DBVTG4.pdf
- Description:
- TVS DEVICE MIXED 7V SOT-23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,102
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Product details
Overview
SN65220DBVTG4 from Texas Instruments is a dual unidirectional transient voltage suppressor (TVS) designed for ESD protection of USB full-speed and low-speed data lines (D+ and 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 SOT-23-6 (DBV) package. It safeguards 3-V/5-V USB transceivers against 15-kV HBM ESD events.
For engineers reviewing the SN65220DBVTG4 datasheet, SN65220DBVTG4 pinout, SN65220DBVTG4 application, or SN65220DBVTG4 equivalent, key selection criteria include standoff voltage margin vs. 5.5-V USB supply, low-capacitance compatibility with 12-Mbps full-speed signaling, ground-pin layout for low-inductance ESD shunting, and thermal derating in compact SOT-23 footprint.
Technical Context
The SN65220DBVTG4 integrates two independent unidirectional TVS diodes in a single SOT-23-6 package, each protecting one USB differential line (A = D+, B = D−) referenced to local GND. Its Zener-triggered bipolar structure provides sharp turn-on above 6.5 V while maintaining high impedance below 6 V during normal operation.
It operates without external bias-functioning purely as a voltage-clamped shunt path-and relies on low-inductance PCB grounding (via multiple GND pins 2 and 5) to divert fast-rising ESD transients (<1 ns rise time) directly to ground before reaching the protected transceiver.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 6.5 V min - Ensures clamping activates only above USB 5.5-V max supply, avoiding false triggering during normal operation. |
| Input Capacitance | 35 pF typ - Enables use in full-speed USB (12 Mbps) but excludes high-speed USB 2.0 (480 Mbps) due to signal integrity impact. |
| Leakage Current | ≤1 µA at 6 V - Prevents measurable DC loading on USB data lines, preserving signal common-mode voltage and receiver thresholds. |
| ESD Protection | ±15-kV HBM - Exceeds IEC 61000-4-2 Level 4 system-level requirements when board layout follows TI's low-inductance grounding guidelines. |
| Operating Temp | −40°C to +85°C - Supports industrial and commercial USB host/peripheral deployments without derating. |
| Package | SOT-23-6 (DBV), 2.90 mm × 1.60 mm - Enables compact placement adjacent to USB connectors on space-constrained PCBs. |
Pinout & Package
SOT-23-6 (DBV) package: 2.90 mm × 1.60 mm body, 1.45 mm max height, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Analog input | Transient suppressor input connected to USB D+ line; clamps positive/negative transients to GND. |
| B | Analog input | Transient suppressor input connected to USB D− line; operates independently of Pin A. |
| GND (Pin 2) | Power | Primary local ground connection; must be tied directly to solid ground plane to minimize L(di/dt) during ESD events. |
| GND (Pin 5) | Power | Secondary ground terminal; improves current-sharing and reduces effective ground inductance when both GND pins are used. |
| NC (Pin 1) | Not connected | Internally unconnected; no PCB trace or pad required - leave floating or omit from layout. |
| NC (Pin 3) | Not connected | Internally unconnected; no electrical function - avoid routing or soldering to prevent parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line USB protection | Single SOT-23-6 device protects both D+ and D− simultaneously - eliminates need for two discrete TVS diodes and saves board area. |
| Low 35-pF capacitance | Preserves USB full-speed eye diagram integrity and meets 12-Mbps timing budgets without equalization or pre-emphasis. |
| 6.5-V breakdown threshold | Provides ≥1-V margin above 5.5-V USB VCC max, preventing conduction during power-up, hot-plug, or brownout conditions. |
| 15-kV HBM ESD rating | Validated per ANSI/ESDA/JEDEC JS-001 - enables robust system-level pass rates in USB port compliance testing when layout rules are followed. |
| No external power required | Passive p-n junction architecture eliminates bias circuitry, BOM count, and supply noise coupling into sensitive analog USB paths. |
Applications
| USB Full-Speed Host Port | USB Full-Speed Peripheral |
|---|---|
Use Scenario: Desktop PC motherboard with front-panel USB-A ports exposed to frequent human contact and ESD-prone environments. IC Role / Device Role / Timing Role: Standoff TVS placed between USB connector and upstream transceiver IC, clamping transients before they reach PHY inputs. Use Value: Prevents latch-up or gate oxide damage in 3-V CMOS transceivers during 15-kV HBM discharges, extending field reliability without altering USB protocol timing. | Use Scenario: External hard drive enclosure with USB-A receptacle subject to repeated cable insertion/removal and static buildup. IC Role / Device Role / Timing Role: Localized ESD shunt at the physical connector, providing first-line defense before signals enter the device's USB controller ASIC. Use Value: Maintains <1-µA leakage to avoid shifting D+/D− DC bias points, ensuring stable SE0/SE1 state detection during enumeration and suspend/resume cycles. |
| USB Low-Speed Hub Port | Industrial USB Device Interface |
Use Scenario: Embedded USB hub IC feeding multiple low-speed HID devices (keyboards, mice) in office equipment. IC Role / Device Role / Timing Role: Dual-channel protector on downstream-facing ports, rated for 1.5-Mbps signaling with headroom for voltage overshoot. Use Value: 35-pF capacitance introduces negligible group delay at 1.5 Mbps, preserving bit timing margins while enabling cost-effective single-device protection per port. | Use Scenario: Programmable logic controller (PLC) with service USB port used for firmware updates and diagnostics in factory-floor settings. IC Role / Device Role / Timing Role: Transient suppressor mounted directly at panel-mount USB-B receptacle, referenced to chassis ground via low-inductance vias. Use Value: −40°C to +85°C rating ensures consistent clamping performance across temperature extremes, preventing premature failure during thermal cycling in unconditioned environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRSR | Single-channel, 0.65-pF capacitance, 5.5-V standoff, SOT-5X3 package | Lower capacitance suits high-speed USB 2.0; lacks dual-line integration - requires two devices for D+/D− | Select when upgrading to USB 2.0 or when ultra-low capacitance is mandatory; accept higher component count and layout complexity. |
| SP1001-01UTG | Single-channel, 0.8-pF capacitance, 5.5-V standoff, SOD-323 package | Higher ESD rating (30-kV HBM), smaller footprint, but no integrated dual configuration - needs two units | Choose for maximum ESD robustness in space-constrained designs where dual-channel integration is secondary to peak surge handling. |
Compared with TPD2E001DRSR and SP1001-01UTG, the SN65220DBVTG4 trades ultra-low capacitance for integrated dual-line protection in a proven industrial SOT-23 package - optimizing BOM count, layout simplicity, and thermal performance for full-speed USB applications where 35-pF is acceptable.
Availability
SN65220DBVTG4 is available at Aetrix Electronics and suitable for USB full-speed host ports, industrial peripheral interfaces, and embedded low-speed hub designs requiring stable component supply across extended product lifecycles.
Supply support for SN65220DBVTG4 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 company delivering analog and embedded processing solutions, with leadership in interface, power management, and signal chain technologies.
The SN65220DBVTG4 belongs to TI's USB transient suppressor product line, engineered specifically to protect submicron 3-V/5-V USB transceivers from system-level ESD stress while maintaining signal fidelity in full-speed and low-speed implementations.
FAQ
What is the primary function of the SN65220DBVTG4 in a USB interface?
The SN65220DBVTG4 functions as a dual unidirectional transient voltage suppressor that protects USB D+ and D− data lines from electrostatic discharge (ESD) and other electrical noise transients. It clamps voltages above 6.5 V to ground, preventing damage to downstream 3-V or 5-V USB transceivers while remaining non-conductive during normal 0–5.5-V operation. Its design ensures compatibility with full-speed (12 Mbps) and low-speed (1.5 Mbps) USB signaling.
Can the SN65220DBVTG4 be used in USB 2.0 high-speed applications?
No, the SN65220DBVTG4 is not suitable for USB 2.0 high-speed (480 Mbps) applications. Its 35-pF typical input capacitance introduces excessive signal distortion and timing skew at 480 Mbps, degrading eye diagram integrity beyond specification limits. TI explicitly states in the datasheet that this device is intended for low- and full-speed USB only. For high-speed USB, lower-capacitance alternatives such as TPD2E001DRSR (0.65 pF) are recommended.
How should the ground pins of the SN65220DBVTG4 be implemented on the PCB?
Both GND pins (Pin 2 and Pin 5) of the SN65220DBVTG4 must be connected directly to a solid, low-impedance ground plane using multiple vias - not daisy-chained traces. This minimizes inductance in the ESD current path, which is critical for effective clamping of fast-rising transients (<1 ns). TI's layout guidelines specify that failure to connect both GND pins degrades protection speed and clamping efficiency, potentially allowing damaging energy to reach the protected transceiver.
What is the significance of the 6.5-V minimum breakdown voltage for the SN65220DBVTG4?
The 6.5-V minimum breakdown voltage ensures the SN65220DBVTG4 remains fully non-conductive during all valid USB operating conditions, including worst-case 5.5-V VBUS tolerance and transient overshoots within specification. This 1-V+ margin prevents false triggering, DC loading, or signal distortion while guaranteeing reliable clamping activation only when hazardous overvoltage events (e.g., ±15-kV ESD) exceed safe thresholds - a key requirement for robust system-level ESD compliance.
Is the SN65220DBVTG4 compatible with automotive applications?
The standard SN65220DBVTG4 is not qualified for automotive use. However, Texas Instruments offers the SN65220-Q1 variant, which is AEC-Q100 qualified for automotive applications and rated for −40°C to +125°C operation. The SN65220DBVTG4 itself is specified only for −40°C to +85°C and lacks automotive-grade reliability testing, so it must not be deployed in safety-critical or under-hood automotive systems without formal qualification validation.
SN65220DBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Clamping:
- 7V
- Technology:
- Mixed Technology
- Number of Circuits:
- 1
- Applications:
- USB
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
SN65220DBVTG4 FAQ
1.How can I place an order for SN65220DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65220DBVTG4 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 SN65220DBVTG4 reliable?
The price and inventory of SN65220DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65220DBVTG4 is usually 5 days.
3.What payment methods are accepted for SN65220DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65220DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65220DBVTG4?
SN65220DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65220DBVTG4 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 SN65220DBVTG4?
For technical support, including SN65220DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65220DBVTG4 requirements.
6.How does Aetrix verify that SN65220DBVTG4 is sourced from the original manufacturer or authorized distributors?
All SN65220DBVTG4 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 SN65220DBVTG4 meets industry standards.
7.What is the process for return or replacement of SN65220DBVTG4?
All SN65220DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN65220DBVTG4, 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 SN65220DBVTG4 part is unused and in its original packaging.
Return procedure for SN65220DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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