The SN65220 device is a dual, and the SN65240 and SN75240 devices are quadruple, unidirectional transient voltage suppressors (TVS). These devices provide electrical noise transient protection to Universal Serial Bus (USB) low and full-speed ports. The input capacitance of 35 pF makes it unsuitable for high-speed USB 2.0 applications.
Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the USB transceiver and/or the USB ASIC if they are of sufficient magnitude and duration.
The ESD performance of the SN65220, SN65240, and SN75240 devices is measured at the system level, according to IEC61000-4-2. However, system design impacts the results of these tests. To accomplish a high compliance level requires careful board design and layout techniques.
| Part number | Order | Number of channels (#) | IO capacitance (Typ) (pF) | Vrwm (V) | IEC 61000-4-2 contact (+/- kV) | IEC 61000-4-5 (A) | Features | Bi-/uni-directional | IO leakage current (Max) (nA) | Rating | Operating temperature range (C) | Package Group | Package size: mm2:W x L (PKG) | Dynamic resistance (Typ) (Ω) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SN65220 |
|
2 | 35 | 6 |
|
3 |
|
Uni-Directional | 1000 | Catalog | -40 to 85 | SOT-23 | 6 | 6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6) |
|
