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 

®

IPAD™

KBMF

EMI FILTER AND LINE TERMINATION

FOR PS/2 MOUSE OR KEYBOARD PORTS

MAIN APPLICATIONS

EMI Filter and line termination for mouse and key-

board ports on:

■ Desktop computers

■ Notebooks

■ Workstations

■ Servers

FEATURES

■ Integrated low pass filters for Data and Clock

lines

■ Integrated ESD protection

■ Integrated pull-up resistors

■ Small package size

■ Breakdown voltage: VBR = 6V min.

DESCRIPTION

On the implementation of computer systems, the

radiated and conducted EMI should be kept within

the required levels as stated by the FCC

regulations. In addition to the requirements of

EMC compatibility, the computing devices are

required to tolerate ESD events and remain

operational without user intervention.

The KBMF implements a low pass filter to limit EMI

levels and provide ESD protection which exceeds

IEC 61000-4-2 level 4 standard. The device also

implements the pull up resistors needed to bias

the data and clock lines. The package is the

SOT23-6L which is ideal for situations where

board space is at a premium.

SOT23-6L

(Plastic)

Table 1: Order Code

Part Number

KBMF01SC6

Marking

KM1

Figure 1: Functional Diagram

Dat In

+Vcc

Rp

Rs

CC

Dat Out

Gnd

Clk In

+Vcc

Rp

Rs

CC

+Vcc

Clk Out

Code 01

Tolerance

Rs

39Ω

±10%

Rp

4.7kΩ

±10%

C

120pF

±20%

BENEFITS

■ EMI / RFI noise suppression

■ ESD protection exceeding IEC61000-4-2 level 4

■ High flexibility in the design of high density

boards

COMPLIES WITH THE FOLLOWING ESD

STANDARDS:

IEC 61000-4-2 (R = 330Ω C = 150pF)

Level 4

±15 kV (air discharge)

±8 kV (contact discharge)

MIL STD 883C, Method 3015-6

Class 3

C = 100pF R = 1500Ω

3 positive strikes and

3 negative strikes (F = 1 Hz)

TM: IPAD is a trademark of STMicroelectronics.

October 2004

REV. 2

1/8

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