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參數(shù)資料
| 型號： | TNETA1555 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 155.52-Mbit/S Clock-Recovery Device(155.52-MBIT/S時鐘恢復裝置) |
| 中文描述： | 155.52 - Mbit / s的時鐘恢復裝置（155.52 - Mbit / s的時鐘恢復裝置） |
| 文件頁數(shù)： | 9/10頁 |
| 文件大小： | 230K |
| 代理商： | TNETA1555 |
TNETA1555
155.52-MBIT/S CLOCK-RECOVERY DEVICE
SDNS001B – SEPTEMBER 1992 – REVISED DECEMBER 1994
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
signal connections (continued)
A separate pseudo-ECL to ECL converter is also provided on the TNETA1555. The pseudo-ECL 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 pseudo-ECL to ECL converter.
120
82
120
82
120
82
1
2
3
4
5
6
7
VCC
CPLL
GND
DIN
INDIS
DIN
VCC
TNETA1555
8
9
GND
TESTOUT
GND
VCC
DATAOUT
10
11
12
TEST1
TEST2
VCC
CLK
CLK
GND
DOUT
DOUT
VCC
DATAIN
DATAIN
DATAOUT
24
23
22
21
20
19
18
17
16
15
14
13
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
VCC
VCC
120
82
120
82
VCC
VCC
NOTES: A. Terminating resistors should be placed as close to the input terminal as possible.
B. The 0.1-
μ
F bypass capacitors should be connected from the VCC terminals to ground.
Figure 5. TNETA1555 External Connections (PECL-to-ECL converter not used)
14
DATAIN
TNETA1555
15
DATAIN
DATAOUT
DATAOUT
13
12
PECL-Level
Device
OUT
OUT
ECL-Level
Device
IN
IN
82
VCC
120
82
120
82
120
82
120
VCC
–5 V
–5 V
Figure 6. External Connections for PECL-to-ECL Converter
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