参数资料
型号: PACSZ1284-04QR
厂商: ON SEMICONDUCTOR
元件分类: 数据传输滤波器
英文描述: 17 FUNCTIONS, 5 V, DATA LINE FILTER
封装: ROHS COMPLIANT, QSOP-28 PIN
文件页数: 7/11页
文件大小: 428K
代理商: PACSZ1284-04QR
PACSZ1284
Rev. 2 | Page 5 of 11 | www.onsemi.com
Performance Information
Filter Capacitors
The IEEE 1284 specification requires both termination and EMI filtering on a total of 17 lines. Basic filtering is
provided through the presence of a capacitor on all signal lines. The filter capacitor is the junction capacitance
of an ESD diode. The typical capacitance at a reverse voltage of 2.5V is 150pF. This diode capacitance is
somewhat voltage dependent. See Figure .
Figure 1. Diode Capacitance vs. Reverse Voltage
The higher speed Data and Strobe lines (9 in total) require an additional series resistor termination for proper
operation, while the eight (8) Status lines do not. See Table 1.
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