California Micro Devices PACKBM Datasheet
CALIFORNIA MICRO DEVICES
PACKBM
KEYBOARD/MOUSE FILTER AND ESD PROTECTION CIRCUIT
Features
Integrated network contains complete filter,
solution and ESD protection diodes.
Application
EMI/RFI filter and ESD protection for
keyboard/mouse port
Product Description
The signals from the keyboard/mouse controller contain high frequency EMI signals that must be reduced before the connec-
tor. Likewise, the signals from the keyboard/mouse controller must be protected from any possible external charges such as
static electricity. The PACKBM provides filtering and pull-up termination of the keyboard and mouse signals as well as ESD
protection.
SNOITACIFICEPSDRADNATS
K7.4(ecnareloTetulosbA Ω )srotsiser%01±
)sroticapacFp074(ecnareloTetulosbA%02±
egnaRerutarepmeTgnitarepOC°07otC°0
)ledoMydoBnamuH(noitcetorPDSE
)2,1etoN(5103dohteM,388-DTS-LIM
)2etoN(noitcetorPmetsySnI
egakcaPPOSQnip-61
*vk4>
*VK8>
SCHEMATIC CONFIGURATION
1
2
3
4
5
6
16
15
14
13
12
11
Block Diagram
Keyboard/
Mouse
Controller
KB-CLK
KB-DATA
MS-CLK
MS-DATA
PAC KBM
4
Keyboard,
Mouse,
3
Filter, and
Protection
Circuit
7
6
13
14
10
11
7
8
10
9
Keyboard
Connector
Mouse
Connector
© 2000 California Micro Devices Corp. All rights reserved.
4/00
215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
C0350798
1
CALIFORNIA MICRO DEVICES
egakcaPrebmuNtraPgniredrO
sniPelytSsebuTleeR&epaTgnikraMtraP
61POSQT/MBKCAPR/MBKCAPMBKCAP
noitcetorPDSE
MBH,noitcetorPmetsySnI
Note 1: Human Body Model per MIL-STD-883, Method 3015
Note 2: Pins 2, 5, 8, 9, 12, 15 grounded, pins 1 and 16 to V
Note 3: Standard IEC 1000-4-2 with C
= 100pF, R
C
Discharge
pins 3, 4, 6, 7,10, 11, 13, 14, one at a time.
Discharge
)2etoN(
2leveL,2-4-0001CEI,noitcetorPmetsySnI
MBH,sesluPDSEVK8@egatloVpmalClennahC
= 1.5 KW, pins 1 and 16 @ 5V and pins 2, 5, 8, 9, 12, 15 @ ground.
= 150pF, R
Discharge
Discharge
NOITAMROFNIGNIREDROTRAPDRADNATS
NOITCETORPDSE
NIMXAM
5103dohteM,ledoMydoBnamuH,O/IynataegatloVegrahcsiDkaeP
)2,1etoN(
VK4-VK4+
VK8-VK51+
)3,2etoN(
)2,1etoN(
, all other pins are open. ESD contact discharge between ground and
CC
= 330W, pins 1, 16 @ 5V and pins 2, 5, 8, 9, 12, 15 @ ground.
VK4-VK4+
V03-<V03+<
PACKBM
©2000 California Micro Devices Corp. All rights reserved.
2
215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com
4/00
Loading...