ISL4485EIB Intersil, ISL4485EIB Datasheet - Page 5

• Manufacturer Part Number: ISL4485EIB
• Description: IC TXRX RS-485/422 5V ESD 8-SOIC
• Manufacturer: Intersil
• Type: Transceiverr

Specifications of ISL4485EIB

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Test Circuits and Waveforms
SIGNAL
GENERATOR
PARAMETER OUTPUT
SIGNAL
GENERATOR
t
t
t
t
HZ
ZH
LZ
ZL
V
CC
DE
DI
FIGURE 2A. TEST CIRCUIT
FIGURE 3A. TEST CIRCUIT
DE
DI
Y/Z
Y/Z
Y/Z
Y/Z
D
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
D
Y
Z
RE
X
X
X
X
5
Y
Z
C
L
R
1/0
0/1
1/0
0/1
DI
DIFF
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES
(Continued)
500Ω
GND
GND
V
V
SW
C
C
CC
CC
L
L
= 100pF
= 100pF
SW
C
L
100
100
GND
15
15
V
(pF)
CC
ISL4485E
DIFF OUT (Y - Z)
OUT (Y, Z)
OUT (Y, Z)
SKEW = |CROSSING PT. OF Y↑ & Z↓ - CROSSING PT. OF Y↓ & Z↑|
OUT (Y)
OUT (Z)
DI
DE
t
t
ZH
ZL
FIGURE 2B. MEASUREMENT POINTS
FIGURE 3B. MEASUREMENT POINTS
t
10%
R
90%
t
t
1.5V
PLH
PHL
1.5V
OUTPUT HIGH
50%
2.3V
50%
2.3V
OUTPUT LOW
t
t
t
t
PHL
PLH
HZ
1.5V
1.5V
LZ
V
V
90%
50%
50%
OH
OL
10%
+ 0.5V
- 0.5V
t
F
3V
0V
3V
0V
+V
-V
V
V
V
V
V
V
V
0V
OH
OL
OH
OL
OH
CC
OL
OD
OD