KBMF01SC6(2004) 데이터 시트보기 (PDF) - STMicroelectronics

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KBMF01SC6
(Rev.:2004)

EMI FILTER AND LINE TERMINATION FOR PS/2 MOUSE OR KEYBOARD PORTS

STMicroelectronics 

KBMF

Figure 10: Digital crosstalk measurements

configuration

Figure 11:Digital crosstalk measurements

Square

Pulse

Generator

5KHz

+5V

74HC04

Line 1

+5V

VG1

Line 2

+5V

74HC04

KBMF

01SC6

b21 VG1

Figure 10 shows the measurement circuit used to quantify the crosstalk effect in a classical digital appli-

cation.

Figure 11 shows that in such a condition signal from 0 to 5V and rise time of few ns, the impact on the

other line is less than 50mV peak to peak (below the logic high threshold voltage). The measurements

performed with falling edges gives the results within the same range.

5. APPLICATION EXAMPLE

Figure 12: Implementation of KBMFxxSC6 in a typical application

KDAT

KCLK

Vcc

PS/2 Connector

KBMF

01SC6

Super I/O

MDAT

MCLK

KBMF

01SC6

The KBMF01SC6 device could be used on PS/2 mouse or keyboard as indicated by figure 12.

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