参数资料
型号: SP487CT-L/TR
厂商: Exar Corporation
文件页数: 6/9页
文件大小: 0K
描述: IC DVR RS485/RS422 QUAD 16SOIC
标准包装: 1,500
类型: 驱动器
驱动器/接收器数: 4/0
规程: RS422/RS485
电源电压: 5V
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
6
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP486_487_00_066
TEST CIRCUITS
R
V
OC
A
V
OD
B
Figure . Driver DC Test Load
CL
500 ohms
S1
S2
VCC
OUTPUT
UNDER TEST
Figure 3. Driver Timing Test Load
+3V
0V
DI
A
B
VO
+
VO
1.5V
tPLH
tF
tR
f =1MHz; tR <10ns, tF <10ns
VO 1/2VO
1/2VO
tPHL
V
= V(A) - V(B)
DIFF
90%
10%
Figure 4. Driver Propagation Delays
Figure 2. Driver Timing Test
Figure 5. Driver Enable/Disable Timing
+3V
0V
EN
5V
VOL
A,B
0V
1.5V
tZL
tZH
f = 1MHz; tR< 10ns ;tF< 10ns
VOH
A,B
2.3V
tLZ
tHZ
0.5V
Output normally LOW
Output normally HIGH
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