Texas Instruments TPD4S012DRYR

Overview

TPD4S012DRYR from Texas Instruments is a four-channel transient voltage suppressor (TVS) diode array designed for ESD protection of USB High-Speed, USB On-The-Go (OTG), and USB charger interfaces. It integrates clamps on D+, D–, ID, and VBUS pins with 0.8-pF typical line capacitance on signal lines, ±10-kV IEC 61000-4-2 contact ESD rating, 15-V VBUS tolerance, and SON-6 (DRY) 1.45 mm × 1.00 mm package - deployed in mobile phone USB ports to preserve signal integrity at 480 Mbps.

For engineers reviewing the TPD4S012DRYR datasheet, TPD4S012DRYR pinout, TPD4S012DRYR application, or TPD4S012DRYR equivalent, key selection criteria include low-capacitance ESD clamping on high-speed data lines, VBUS-level surge tolerance up to 3 A (IEC 61000-4-5), thermal resistance (RθJA = 461.3°C/W), and compatibility with mini/micro-USB connector layouts requiring minimal PCB footprint.

Technical Context

The TPD4S012DRYR operates as a passive, bidirectional TVS array with independent clamping diodes per channel. Its functional mode relies on dynamic breakdown (VBR = 6–9 V on D+/D–/ID; 20–24 V on VBUS) and low forward voltage (VD = 0.6–0.95 V) to shunt ESD transients to GND within nanoseconds. No external bias or control signals are required.

Each protected pin features dedicated ESD clamp circuitry: D+, D–, and ID share identical 0.8-pF capacitance and ±10-kV IEC 61000-4-2 compliance; VBUS uses a higher-voltage clamp (11 pF typ, 15-V operating tolerance, 3-A peak pulse current per IEC 61000-4-5). The N.C. pin is unconnected and must not be soldered.

Key Specifications

Pinout & Package

TPD4S012DRYR uses a 6-pin SON (DRY) package measuring 1.45 mm × 1.00 mm with 0.6 mm max height and wettable flanks. The exposed thermal pad is connected internally to GND for enhanced heat dissipation and ESD path integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with TPD4S012DRYR, TPD2EUSB30DRYR offers lower capacitance and USB 3.0 support but lacks ID pin protection, while SZ1.8T1G delivers higher ESD rating per channel yet increases component count, layout complexity, and total protection path inductance - making TPD4S012DRYR optimal for cost-sensitive, space-constrained USB 2.0 OTG/charger designs.

Availability

TPD4S012DRYR is available at Aetrix Electronics and suitable for smartphone USB ports, digital camera interfaces, GPS tracker charging circuits, and PDA OTG implementations requiring stable component supply, consistent RoHS-compliant manufacturing, and long-term lifecycle support.

Supply support for TPD4S012DRYR 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 specializing in analog, embedded processing, and connectivity technologies, with leadership in precision analog and low-power design.

The TPD4S012DRYR belongs to TI's USB interface protection product line, engineered specifically to deliver integrated, low-capacitance ESD solutions for portable USB 2.0 endpoints and chargers - balancing robustness, size, and signal fidelity.

FAQ

What is the primary function of the TPD4S012DRYR in a USB interface?

The TPD4S012DRYR serves as a four-channel ESD protection diode array safeguarding D+, D–, ID, and VBUS lines in USB 2.0 High-Speed, OTG, and charger applications. It diverts ±10-kV IEC 61000-4-2 ESD transients to GND using integrated clamps, with 0.8-pF capacitance on signal lines to preserve 480-Mbps data integrity. The TPD4S012DRYR requires no power and operates passively, making it ideal for space-constrained portable designs.

Can the ID pin on the TPD4S012DRYR be left unconnected?

Yes, the ID pin on the TPD4S012DRYR may be left floating if USB On-The-Go functionality is not implemented in the system. The datasheet explicitly states that unused ID pins can be left unconnected without affecting device operation or reliability. However, if the ID pin is routed, it must connect to the corresponding ID line on the USB connector - and benefits from the same 0.8-pF capacitance and ±10-kV ESD protection as D+ and D–. The TPD4S012DRYR's design treats D+, D–, and ID as functionally equivalent clamp channels.

What is the maximum operating voltage supported on the VBUS pin of the TPD4S012DRYR?

The VBUS pin of the TPD4S012DRYR supports an operating voltage range of 0 V to 15 V DC, with absolute maximum rating up to 20 V. This 15-V tolerance enables reliable operation across USB charger voltages including standard 5-V, quick-charge variants, and OTG VBUS negotiation levels - while maintaining clamping action only during overvoltage transients. The TPD4S012DRYR's VBUS clamp has higher breakdown (20–24 V) and capacitance (11 pF) than its signal pins, optimizing it for power-line surge suppression without interfering with normal charging operation.

How does the TPD4S012DRYR differ from standard single-channel TVS diodes in USB protection?

The TPD4S012DRYR integrates four matched ESD clamps - for D+, D–, ID, and VBUS - into a single 1.45 mm × 1.00 mm SON package, eliminating the need for four discrete TVS devices and associated layout complexity. Unlike generic TVS diodes, it provides pin-specific optimization: 0.8-pF capacitance on signal lines for USB 2.0 compliance, and 11-pF/15-V-rated VBUS clamping for charger resilience. The TPD4S012DRYR also features a flow-through pinout that simplifies routing between USB connectors and controllers, reducing parasitic inductance and improving ESD response time.

Is the N.C. pin on the TPD4S012DRYR required to be grounded or left open?

The N.C. (pin 5) on the TPD4S012DRYR is not internally connected and must remain unconnected on the PCB - neither grounded nor tied to any net. The datasheet specifies "N.C. – Not internally connected", and connecting it risks introducing unintended coupling paths or solder bridging defects. Leaving it open ensures predictable ESD performance and avoids violating the device's validated layout guidelines. All functional protection is delivered through pins 1–4 and 6; the TPD4S012DRYR operates correctly with pin 5 unpopulated and un-routed.