參數(shù)資料
型號: SP487ET-L/TR
廠商: Exar Corporation
文件頁數(shù): 6/9頁
文件大?。?/td> 0K
描述: IC DVR RS485/RS422 QUAD 16SOIC
標(biāo)準(zhǔn)包裝: 1,500
類型: 驅(qū)動器
驅(qū)動器/接收器數(shù): 4/0
規(guī)程: RS422/RS485
電源電壓: 5V
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC
包裝: 帶卷 (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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