8 FN7785.1 March 27, 2012 Test Circuits and Waveforms FIGURE 3A. VOD
參數(shù)資料
型號: ISL32485EIBZ-T
廠商: Intersil
文件頁數(shù): 16/17頁
文件大?。?/td> 0K
描述: IC TXRX RS485 FAULT PROT 8SOIC
產(chǎn)品培訓模塊: Solutions for Industrial Control Applications
標準包裝: 2,500
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 4.5 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SOIC
包裝: 帶卷 (TR)
ISL32483E, ISL32485E
8
FN7785.1
March 27, 2012
Test Circuits and Waveforms
FIGURE 3A. VOD AND VOC
FIGURE 3B. VOD AND VOC WITH COMMON MODE LOAD
FIGURE 3. DC DRIVER TEST CIRCUITS
FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS
FIGURE 4. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
FIGURE 5A. TEST CIRCUIT
FIGURE 5B. MEASUREMENT POINTS
FIGURE 5. DRIVER ENABLE AND DISABLE TIMES
D
DE
DI
VCC
VOD
VOC
RL/2
Z
Y
D
DE
DI
VCC
VOD
375
Z
Y
VCM
RL/2
VOC
D
DE
DI
VCC
SIGNAL
GENERATOR
RD
Z
Y
375*
CD
VCM
*ONLY USED FOR COMMON
MODE LOAD TESTS
OUT (Z)
0V
50%
VOH
VOL
OUT (Y)
tPLH
tPHL
DIFF OUT (Y - Z)
tR
+VOD
-VOD
90%
tF
10%
DI
SKEW = |tPLH - tPHL|
3V
D
DE
DI
Z
Y
VCC
GND
SW
PARAMETER
OUTPUT
RE
DI
SW
CL (pF)
tHZ
Y/Z
X
1/0
GND
50
tLZ
Y/Z
X
0/1
VCC
50
tZH
Y/Z
0 (Note 9)
1/0
GND
100
tZL
Y/Z
0 (Note 9)
0/1
VCC
100
tZH(SHDN)
Y/Z
1 (Note 12)
1/0
GND
100
tZL(SHDN)
Y/Z
1 (Note 12)
0/1
VCC
100
SIGNAL
GENERATOR
110
CL
OUT (Y, Z)
0V
50%
VOH
0V
VOH - 0.5V
tHZ
OUT (Y, Z)
VCC
VOL
VOL + 0.5V
tLZ
DE
OUTPUT LOW
tZL, tZL(SHDN)
tZH, tZH(SHDN)
2.3V
3V
(Note 11)
(Note 11)
(Note 11)
OUTPUT HIGH
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