This document introduces the features and characteristics of SN65220, SN65240 and SN75240. These 3 products are all transient voltage suppressors designed to provide electrical noise transient protection to Universal Serial Bus (USB) 1.1 and USB 2.0 ports.
The SN65220 is a single transient voltage suppressor, while the SN65240 and SN75240 are dual devices designed to protect USB 1.1 ports from electrical noise transients. They are intended for 3‑V or 5‑V circuits and offer ESD protection exceeding 15 kV (human body model) and 2 kV (machine model).\n\nKey specifications include a stand‑off voltage of at least 6 V, low leakage current (1 µA max at 6 V), typical capacitance of 35 pF, and peak power dissipation up to 60 W. The devices are available in WCSP, SOT‑23, DIP‑8, and TSSOP packages with operating temperature ranges from –40 °C to 85 °C (SN75240 up to 70 °C).
| Stand‑Off Voltage | 6 V Min |
|---|---|
| Leakage Current | 1 µA Max at 6 V |
| Capacitance | 35 pF Typical |
| ESD Protection (Human Body Model) | 15 kV |
| ESD Protection (Machine Model) | 2 kV |
| Peak Power Dissipation | 60 W |
| Peak Forward Surge Current | 3 A |
| Peak Reverse Surge Current | 9 A |
| Operating Temperature Range (SN65220/SN65240) | ‑40 °C to 85 °C |
The stand‑off voltage is at least 6 V.
It provides up to 15 kV human‑body model and 2 kV machine model protection.
The typical input capacitance is 35 pF.
The devices can dissipate up to 60 W peak power.