VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7939
Package Pin Description
SONET/SDH 3.125Gb/s
Laser Diode Driver with Automatic Power Control
Figure 2: Pin Diagram
RESERVED
BIASMAX
MODSET
APCSET
CAPC
26
GND
VCC
32
31
30
29
28
27
VCC
DATA+
DATA-
VCC
CLK-
CLK+
VCC
LATCH
1
2
3
4
5
6
7
8
25
VCC
24
23
22
21
MD
GND
GND
VCC
OUT-
OUT+
VCC
BIAS
VSC7939
20
19
18
17
9
10
11
12
13
14
15
GND
ENABLE
DISABLE
BIASMON
MODMON
FAIL
APCFILT
G52350-0, Rev 3.2
02/26/01
©
VITESSE
SEMICONDUCTOR CORPORATION
• 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
VCC
16
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