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参数资料
| 型号： | MXL1544CAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX MULTIPROTOCOL 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 4/4 |
| 规程： | RS232 |
| 电源电压： | 5VDC |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
MXL1544/MAX3175
+5V Multiprotocol, Software-Selectable
Control Transceivers
14
______________________________________________________________________________________
DTE vs. DCE Operation
Figure 16 shows a port with one DB-25 connector that
can be configured for either DTE or DCE operation. The
configuration requires separate cables for proper sig-
nal routing in DTE or DCE operation. Figure 16 illus-
trates a DCE or DTE controller-selectable interface. The
DCE/DTE and INVERT inputs switch the port’s mode of
operation (Table 1).
The MXL1543 and MXL1544/MAX3175 can be connect-
ed for either DTE or DCE operation in one of two ways:
a dedicated DTE or DCE port with an appropriate gen-
der connector or a port with a connector that can be
configured for DTE or DCE operation by rerouting the
signals to the MXL1543 and MXL1544/MAX3175 using
a dedicated DTE cable or dedicated DCE cable. The
interface mode is selected by logic outputs from the
controller or from jumpers to either VCC or GND on the
mode select pins. A dedicated DCE port using a DB-25
female connector is shown in Figure 17. Figure 18 illus-
trates a dedicated DTE port using a DB-25 male con-
nector.
R6
10k
R8
5k
A
′
B
′
C
′
A
B
GND
R5
30k
R7
10k
R4
30k
MXL1544
MAX3175
S3
RECEIVER
R6
10k
R8
5k
A
′
B
′
C
′
A
B
GND
R5
30k
R7
10k
R4
30k
MXL1544
MAX3175
S3
RECEIVER
Figure 15. V.28 Termination and Internal Resistance Network
Figure 14. V.11 Internal Resistance Networks
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