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)|
||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)|