参数资料
型号: SP3223EUCA-L/TR
厂商: Exar Corporation
文件页数: 6/20页
文件大小: 0K
描述: IC TXRX RS232 INTELLIGENT 20SSOP
标准包装: 1,500
类型: 收发器
驱动器/接收器数: 2/2
规程: RS232
电源电压: 3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
供应商设备封装: 20-SSOP
包装: 带卷 (TR)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-707 www.exar.com
SP3223E/EB/EU_0_06272
4
Figure 2. AUTO ON-LINE Timing Waveforms
RECEIVER
RS-232 INPUT
VOLTAGES
STATUS
+5V
0V
-5V
tSTSL
tSTSH
tONLINE
VCC
0V
DRIVER
RS-232 OUTPUT
VOLTAGES
0V
+2.7V
-2.7V
S
H
U
T
D
O
W
N
Table 5. AUTO ON-LINE Logic
Figure 22. Stage I of AUTO ON-LINE Circuitry
Figure 23. Stage II of AUTO ON-LINE Circuitry
RS-232
Receiver Block
RXINACT
Inactive Detection Block
RXIN
RXOUT
R1ON
R 2ON
Delay
Buffer
Delay
Buffer
SHUTDOWN
INACTIVE
RS-232 SIGNAL
AT RECEIVER
INPUT
SHUTDOWN
ONLINE
STATUS
TRANSCEIVER
STATUS
YES
HIGH
LOW
HIGH
Normal Operation
(AUTO ON-LINE)
NO
HIGH
LOW
Normal Operation
NO
HIGH
LOW
Shutdown
(AUTO ON-LINE)
YES
LOW
HIGH/LOW
HIGH
Shutdown
NO
LOW
HIGH/LOW
LOW
Shutdown
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