ZHCSJD7C April 2002 – February 2019 SN65LVDT14 , SN65LVDT41
PRODUCTION DATA.
请参考 PDF 数据表获取器件具体的封装图。
As per the LVDS application and data handbook (SLLD009), printed-circuit boards usually offer designers two transmission line options: microstrip and stripline. Microstrips are traces on the outer layer of a PCB, as shown in Figure 23.
On the other hand, striplines are traces between two ground planes. Striplines are less prone to emissions and susceptibility problems because the reference planes effectively shield the embedded traces. However, from the standpoint of high-speed transmission, juxtaposing two planes creates additional capacitance. TI recommends routing LVDS signals on microstrip transmission lines when possible. The PCB traces allow designers to specify the necessary tolerances for ZO based on the overall noise budget and reflection allowances. Footnotes 1(2), 2(3), and 3(4) provide formulas for ZO and tPD for differential and single-ended traces. (2)(3)(4)