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參數(shù)資料
| 型號： | HYC9088AR-LF |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | ARCNET Twisted Pair and Coaxial Compatible High Impedance Transceiver HIT |
| 中文描述： | DATACOM, ETHERNET TRANSCEIVER, PSIP20 |
| 封裝： | ROHS COMPLIANT, SIP-20 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大?。?/td> | 121K |
| 代理商： | HYC9088AR-LF |
Revision (02-16-07)
Page 6
SMSC HYC9088A
DATASHEET
Proper Connection for Twisted Pair
Each twisted pair compatible ARCNET node would typically have two RJ-11 modular connectors mounted on the
node card (refer to Figure 4). PHASE A should be connected to pin 2 of the connectors and PHASE B to pin 3. A
twisted pair segment would have an RJ-11 modular jack on each end (see Figure 5). Please note that the suggested
numbering scheme of the modular jack shown in Figure 5 may not be consistent with that found on some manufacturers'
products. Please ensure consistent connection of Phase A and Phase B signals throughout the network to avoid the
reception of erroneous data.
Table 1 - Specifications for Cabling
PARAMETER
VALUE FOR COAX
VALUE FOR TWISTED PAIR
Wiring
RG62
Solid Copper 22, 24, or 26 AWG
Number of Twists/Foot
N/A
2 min.
DC Resistance
3.4 Ohms/1000 ft.
28.6 Ohms/1000 ft. max.
Characteristic Impedance
93 Ohms at 1 MHz
105 Ohms
20% at 1 MHz
Maximum Attenuation
5.5 dB/1000 ft. at 5 MHz
16.0 dB/1000 ft. at 5 MHz
FILTER
ISOLATION
TRANSFORMER
DISABLE
19
nPULSE 1
20
18
nPULSE 2
Rx
DATA
7
6
4
3
13
14
17
+5V GND -5V
GND GND GND
TPA
TPB
TPC
TPD
8
16
15
10
11
PH-B/SHIELD
12
PH-A/CENTER
NC
NC
NC
1
2
9
FILTER,
AMPLIFIER
AND
DIFFERENTIAL
DRIVER
VOLTAGE
THRESHOLD
DETECTOR
NC
5
FIGURE 1 – HYC9088A INTERNAL BLOCK DIAGRAM
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