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參數(shù)資料
| 型號： | HTR6545 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | SFF TRANSCEIVER |
| 中文描述： | 準系統(tǒng)收發(fā)器 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 284K |
| 代理商： | HTR6545 |
Page 5 of 9
7. PINOUT
Pinout is shown in Table 4. The mounting studs are for mechanical
attachment to the circuit board and are not connected to internal circuit.
Table 4. Pin Designations
Symbol
Pin
Name
Pin
Symbol
Name
Received Power Monitor
(PD bias / APD monitor)
RMON
1
20
PMON+
LD Power Monitor(positive)
Receiver Ground
RGND
2
19
PMON-
LD Power Monitor(Negative)
Receiver Ground
RGND
NC
3
4
18
17
BMON+
BMON-
LD Bias Monitor(positive)
No Internal Connection
LD Bias Monitor(Negative)
No Internal Connection
NC
5
16
TGND
Transmitter Ground
Receiver Ground
RGND
RVCC
6
7
15
14
DI
DI
Transmit DATA(CML)
Receiver VCC(+3.3V)
Transmit DATA(CML)
Signal Detect(TTL)
SD
8
13
TD
Transmitter Disable(TTL)
Received DATA(CML)
DO
DO
9
10
12
11
TGND
TVCC
Transmitter Ground
Received DATA(CML)
Transmitter VCC(+3.3V)
Pin 17 to Pin20 are outputs of laser monitoring function. These pins should
be connected to high impedance voltage sensing circuit. Internal circuit is
shown in Figure 2. If these function are not used, the pins should be open.
Figure 2. Equivalent internal circuit of PMON,BMON
Vcc
Monitor PD
laser
BMON+
BMON-
PMON+
PMON-
bias current
3k
3k
3k
3k
200
10
Laser
Driver
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