10 FN7639.0 June 17, 2010 FIGURE 2A. TEST CIRCUIT FIGURE 2B. MEASUREMENT POINTS FIGURE 2. DRIVER PRO" />
參數資料
型號: ISL31478EIBZ-T
廠商: Intersil
文件頁數: 2/21頁
文件大?。?/td> 0K
描述: IC TXRX RS485 FAULT PROT 8SOIC
標準包裝: 2,500
類型: 收發(fā)器
驅動器/接收器數: 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-SOICN
包裝: 帶卷 (TR)
ISL31470E, ISL31472E, ISL31475E, ISL31478E
10
FN7639.0
June 17, 2010
FIGURE 2A. TEST CIRCUIT
FIGURE 2B. MEASUREMENT POINTS
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
FIGURE 3A. TEST CIRCUIT
FIGURE 3B. MEASUREMENT POINTS
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES
FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS
FIGURE 4. DRIVER DATA RATE
Test Circuits and Waveforms (Continued)
D
DE
DI
VCC
SIGNAL
GENERATOR
RD
Z
Y
CD
OUT (Z)
3V
0V
1.5V
VOH
VOL
OUT (Y)
tPLH
tPHL
DIFF OUT (Y - Z)
tR
+VOD
-VOD
90%
tF
10%
DI
SKEW = |tPLH - tPHL|
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 11)
1/0
GND
100
tZL
Y/Z
0 (Note 11)
0/1
VCC
100
tZH(SHDN)
Y/Z
1 (Note 14)
1/0
GND
100
tZL(SHDN)
Y/Z
1 (Note 14)
0/1
VCC
100
SIGNAL
GENERATOR
110Ω
CL
OUT (Y, Z)
3V
0V
1.5V
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
Note 13
OUTPUT HIGH
Note 13
D
DE
DI
VCC
SIGNAL
GENERATOR
Z
Y
CD
VOD
+
-
54Ω
3V
0V
DIFF OUT (Y - Z)
+VOD
-VOD
DI
0V
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