ISL3178E Intersil Corporation, ISL3178E Datasheet - Page 9

• Manufacturer Part Number: ISL3178E
• Description: (ISL3170E - ISL3178E) RS-485/RS-422 Transceivers
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
SIGNAL
GENERATOR
PARAMETER
SIGNAL
GENERATOR
t
t
ZH(SHDN)
ZL(SHDN)
SIGNAL
GENERATOR
t
t
t
t
HZ
ZH
LZ
ZL
V
CC
V
CC
DE
DI
DE
DI
FIGURE 2A. TEST CIRCUIT
FIGURE 3A. TEST CIRCUIT
FIGURE 4A. TEST CIRCUIT
DE
DI
OUTPUT
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
D
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES (EXCEPT ISL3171E, ISL3174E, ISL3177E)
D
Z
Y
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
D
Y
Z
9
Y
1 (Note 10)
1 (Note 10)
Z
0 (Note 7)
0 (Note 7)
54Ω
RE
X
X
R
DIFF
50pF
(Continued)
500Ω
C
D
1/0
0/1
1/0
0/1
1/0
0/1
DI
C
D
SW
FIGURE 4. DRIVER DATA RATE
GND
GND
GND
V
V
V
SW
GND
V
CC
CC
CC
V
CC
OD
+
-
DIFF OUT (Y - Z)
OUT (Y, Z)
OUT (Y, Z)
t
t
ZH
OUT (Z)
OUT (Y)
ZL
DIFF OUT (Y - Z)
DI
, t
, t
DE
NOTE 9
NOTE 9
ZH(SHDN)
ZL(SHDN)
DI
NOTE 9
FIGURE 2B. MEASUREMENT POINTS
FIGURE 3B. MEASUREMENT POINTS
FIGURE 4B. MEASUREMENT POINTS
t
10%
R
90%
t
PLH
1.5V
1.5V
-V
OD
SKEW = |t
OUTPUT HIGH
50%
50%
OUTPUT LOW
PLH
- t
PHL
t
t
t
PHL
HZ
1.5V
1.5V
LZ
|
V
V
90%
OH
OL
10%
+V
+ 0.25V
- 0.25V
t
F
OD
August 28, 2006
3V
0V
3V
0V
3V
0V
+V
-V
0V
FN6307.2
V
V
V
V
V
0V
OH
OH
OL
CC
OL
OD
OD