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參數(shù)資料
| 型號： | TNETA1556 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 155.52-Mbit/S Clock-Recovery Device(155.52-MBIT/S時鐘恢復(fù)裝置) |
| 中文描述： | 155.52 - Mbit / s的時鐘恢復(fù)裝置（155.52 - Mbit / s的時鐘恢復(fù)裝置） |
| 文件頁數(shù)： | 9/10頁 |
| 文件大?。?/td> | 216K |
| 代理商： | TNETA1556 |
TNETA1556
155.52-MBIT/S CLOCK-RECOVERY DEVICE
SDNS015C – FEBRUARY 1994 – REVISED JUNE 1995
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
signal connections (continued)
A separate PECL-to-ECL converter is also provided on the TNETA1556. The PECL inputs require a 50-
to
V
CC
– 2 V termination (or a Thevenin equivalent) and the ECL outputs require a 50-
to –2 V termination (or
its equivalent). Figure 6 shows the external connections for the PECL-to-ECL converter.
120
82
VCC
CPLL
GND
DIN
INDIS
DIN
VCC
TNETA1556
GND
TESTOUT
GND
VCC
DATAOUT
TEST1
TEST2
VCC
CLK
CLK
GND
DOUT
DOUT
VCC
DATAIN
DATAIN
DATAOUT
Optical-to-
Electrical
Converter
OUT
OUT
IN
CLKIN
CLKIN
155.52-Mbit/s
Framer
DIN
DIN
0.1
μ
F
VCC
VCC
VCC
120
82
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
120
82
120
82
120
82
–5 V
–5 V
–5 V
–5 V
NOTES: A. Terminating resistors should be placed as close to the input terminal as possible.
B. The 0.1-
μ
F bypass capacitors are connected from the VCC terminals to ground.
Figure 5. TNETA1556 External Connections (PECL-to-ECL converter not used)
DATAIN
TNETA1556
DATAIN
DATAOUT
DATAOUT
PECL-Level
Device
OUT
OUT
ECL-Level
Device
IN
IN
VCC
VCC
–5 V
–5 V
120
82
120
82
120
82
120
82
14
13
15
12
Figure 6. External Connections for PECL-to-ECL Converter
P
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