参数资料
型号: SP3203EEY-L
厂商: Exar Corporation
文件页数: 16/16页
文件大小: 0K
描述: IC TXRX RS232 ESD 20TSSOP
标准包装: 74
类型: 收发器
驱动器/接收器数: 3/2
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-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 管件
其它名称: 1016-1067-5
9
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-707 www.exar.com
SP3203E_00_2080
Current RS-232 serial transceivers are
designed with fixed 5V to 3.3V TTL input/
output voltage levels. The V
L function in the
SP3203E allows the end user to set the TTL
input/output voltage levels independent of
Vcc. By connecting V
L to the main logic bus
of system, the TTL input/output limits and
thresholds are reset to interface with the on
board low voltage logic circuitry.
Capacitor Selection Table:
Vcc (V)
C (F)
C2 - C4 (F)
3.0 to 3.6
0.
4.5 to 5.5
0.047
0.33
3.0 to 5.5
0.22
Figure 3. Loopback Test Circuit result at 20Kbps
(All Drivers Fully Loaded)
Ch1
Ch3
3
1
2
T
[
]
T1 IN
T1 OUT
R1 OUT
5.00V Ch2 5.00V M 5.00msCh1
0V
5.00V
Figure 4. Loopback Test Circuit result at 250Kbps
(All Drivers Fully Loaded)
3
1
2
T
[
]
T1 IN
T1 OUT
R1 OUT
Ch1
Ch3
5.00V Ch2 5.00V M 2.50msCh1
0V
5.00V
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