KBMFXXSC6 Datasheet, PDF (1/8 Pages) STMicroelectronics – EMI FILTER AND LINE TERMINATION FOR PS/2 MOUSE OR KEYBOARD PORTS

®
A.S.D.™
KBMFxxSC6
EMI FILTER AND LINE TERMINATION
FOR PS/2 MOUSE OR KEYBOARD PORTS
MAIN APPLICATION
EMI Filter and line termination for mouse and key-
board ports on:
- Desktop computers
- Notebooks
- Workstations
- Servers
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.
FEATURES
s Integrated low pass filters for Data and Clock
lines
s Integrated ESD protection
s Integrated pull-up resistors
s Small package size
s Breakdown voltage: V_BR = 6V min
SOT23-6L
FUNCTIONAL DIAGRAM
Dat In
Gnd
Clk In
+Vcc
Rp
Rs
CC
+Vcc
Rp
Rs
CC
Dat Out
+Vcc
Clk Out
BENEFITS
s EMI / RFI noise suppression
s ESD protection exceeding IEC61000-4-2 level 4
s High flexibility in the design of high density
boards
code 01
Tolerance
Rs
39Ω
±10%
Rp
4.7kΩ
±10%
C
120pF
±20%
TM: ASD and TRANSIL are trademarks of STMicroelectronics.
February 2002 - Ed : 1D
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