ISL4491EIB Intersil, ISL4491EIB Datasheet - Page 7

• Manufacturer Part Number: ISL4491EIB
• Description: IC TXRX RS-485/422 5V ESD 14SOIC
• Manufacturer: Intersil
• Type: Transceiverr

Specifications of ISL4491EIB

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Test Circuits and Waveforms
SIGNAL
GENERATOR
PARAMETER OUTPUT
SIGNAL
GENERATOR
PARAMETER
t
t
t
t
HZ
ZH
LZ
ZL
SIGNAL
GENERATOR
t
t
t
t
HZ
ZH
LZ
ZL
+1.5V
FIGURE 3A. TEST CIRCUIT
FIGURE 4A. TEST CIRCUIT
FIGURE 5A. TEST CIRCUIT
DE
DI
Y/Z
Y/Z
Y/Z
Y/Z
RE
A
B
B
A
RE
D
DE
X
X
X
X
R
RE
X
X
X
X
R
7
Y
Z
RO
RO
C
L
1/0
0/1
1/0
0/1
DI
+1.5V
+1.5V
-1.5V
-1.5V
FIGURE 5. RECEIVER ENABLE AND DISABLE TIMES
A
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES
15pF
(Continued)
500Ω
1kΩ
15pF
FIGURE 4. RECEIVER PROPAGATION DELAY
GND
GND
V
V
SW
CC
CC
SW
SW
ISL4489E, ISL4491E
GND
GND
V
V
SW
C
CC
CC
L
GND
100
100
V
GND
V
15
15
CC
(pF)
CC
OUT (Y, Z)
OUT (Y, Z)
RO
A
RO
RO
RE
DE
FIGURE 3B. MEASUREMENT POINTS
FIGURE 4B. MEASUREMENT POINTS
FIGURE 5B. MEASUREMENT POINTS
t
t
ZH
t
t
ZL
ZH
ZL
t
1.5V
PLH
1.5V
1.5V
OUTPUT HIGH
OUTPUT HIGH
50%
1.5V
1.5V
OUTPUT LOW
2.3V
2.3V
OUTPUT LOW
t
t
t
HZ
PHL
1.5V
LZ
1.5V
t
t
HZ
LZ
1.5V
V
V
50%
OH
OL
V
V
OH
OL
+ 0.5V
- 0.5V
3V
0V
+ 0.5V
- 0.5V
3V
0V
3V
0V
V
V
V
0V
V
OH
CC
OL
0V
CC
V
FN6074.3
V
V
0V
OH
CC
OL