isl83085e Intersil Corporation, isl83085e Datasheet - Page 9

• Manufacturer Part Number: isl83085e
• Description: 5v, Half Duplex, 500kbps Slew Rate Limited, ?15kv Esd Protected, Rs-485/rs-422 Transceiver
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
PARAMETER OUTPUT
SIGNAL
GENERATOR
SIGNAL
GENERATOR
t
t
ZH(SHDN)
ZL(SHDN)
SIGNAL
GENERATOR
t
t
t
t
HZ
ZH
LZ
ZL
V
CC
V
CC
DE
DI
ISL83080E, ISL83082E, ISL83083E, ISL83085E, ISL83086E, ISL83088E
DE
DI
FIGURE 2A. TEST CIRCUIT
FIGURE 3A. TEST CIRCUIT
FIGURE 4A. TEST CIRCUIT
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
DE
DI
D
D
Z
Y
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
1 (Note 10)
1 (Note 10)
D
0 (Note 7)
0 (Note 7)
Y
Z
RE
X
X
9
Z
Y
60Ω
R
DIFF
1/0
0/1
1/0
0/1
1/0
0/1
DI
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES
C
(Continued)
500Ω
L
C
D
GND
GND
GND
V
V
V
C
SW
C
CC
CC
CC
L
L
= 100pF
= 100pF
SW
FIGURE 4. DRIVER DATA RATE
C
L
100
100
100
100
15
15
GND
V
V
(pF)
CC
OD
+
-
DIFF OUT (Y - Z)
OUT (Y, Z)
OUT (Y, Z)
OUT (Z)
OUT (Y)
t
t
ZH
ZL
DIFF OUT (Y - Z)
DI
DE
, t
, t
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
-V
1.5V
OD
SKEW = |t
OUTPUT HIGH
2.3V
2.3V
OUTPUT LOW
PLH
- t
PHL
t
PHL
t
1.5V
t
HZ
LZ
1.5V
|
90%
V
V
OH
10%
OL
+V
November 4, 2005
t
- 0.5V
+ 0.5V
F
OD
3V
0V
3V
0V
3V
0V
+V
0V
-V
FN6085.7
V
V
V
V
V
OH
OL
0V
OD
OD
OH
CC
OL