CM2009
Product Description (cont’d)
Two non-inverting drivers provide buffering for the
HSYNC and VSYNC signals from the video controller
IC (SYNC1, SYNC2). These buffers accept TTL input
levels and convert them to CMOS output levels that
swing between Ground and V
CC_SYNC
, which is typi-
cally 5V. Additionally, each driver has a series termina-
tion resistor (R
T
) connected to the SYNC_OUT pin,
eliminating the external termination resistors typically
required for the HSYNC and VSYNC lines of the video
cable. There are three versions with different values of
R
T
to allow termination at typically 65
Ω
(CM2009-00)
or 55
Ω
(CM2009-01) or 15
Ω
(CM2009-02).
The 15Ω (CM2009-02) version will typically require two
external resistors which can be chosen to exactly
match the characteristic impedance of the SYNC lines
of the video cable.
Two N-channel MOSFETs provide the level shifting
function required when the DDC controller is operated
at a lower supply voltage than the monitor. The gate
terminals for these MOSFETS (V
CC_DDC
) should be
connected to the supply rail (typically 3.3V) that sup-
plies power to the transceivers of the DDC controller.
PACKAGE / PINOUT DIAGRAM
Top View
V
CC_SYNC
V
CC_VIDEO
VIDEO_1
VIDEO_2
VIDEO_3
GND
V
CC_DDC
BYP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SYNC_OUT2
SYNC_IN2
SYNC_OUT1
SYNC_IN1
DDC_OUT2
DDC_IN2
DDC_IN1
DDC_OUT1
16 Pin QSOP
Note: This drawing is not to scale.
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
R
OUT
65Ω
55Ω
15Ω
Pins
16
16
16
Package
QSOP
QSOP
QSOP
Ordering Part
Number
1
CM2009-00QS
CM2009-01QS
CM2009-02QS
Part Marking
CM2009-00QS
CM2009-01QS
CM2009-02QS
Lead-free Finish
Ordering Part
Number
1
CM2009-00QR
CM2009-01QR
CM2009-02QR
Part Marking
CM2009-00QR
CM2009-01QR
CM2009-02QR
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
©
2004 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
08/12/04
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
