ISL43485IB-T Intersil, ISL43485IB-T Datasheet - Page 6

• Manufacturer Part Number: ISL43485IB-T
• Description: IC TXRX 1TX/1RX 3V RS-485 8-SOIC
• Manufacturer: Intersil
• Type: Transceiverr

Specifications of ISL43485IB-T

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 3 V ~ 3.6 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
t
t
t
t
t
t
SIGNAL
GENERATOR
HZ
LZ
ZH
ZL
ZH(SHDN)
ZL(SHDN)
SIGNAL
GENERATOR
PARAMETER
SIGNAL
GENERATOR
FIGURE 2C. SINGLE ENDED TEST CIRCUIT
FIGURE 2A. DIFFERENTIAL TEST CIRCUIT
3V
3V
DE
DI
DE
DI
FIGURE 3A. TEST CIRCUIT
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
DE
DI
OUTPUT
FIGURE 2. DRIVER DATA RATE, PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
D
D
Y
Z
D
Y
Z
6
0 (Note 5)
0 (Note 5)
1 (Note 8)
1 (Note 8)
Z
Y
OUT
RE
X
X
R
C
R
L
L
DIFF
= 27Ω
V
= 15pF
OM
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES
C
(Continued)
= 60Ω
110Ω
L
=
1/0
0/1
1/0
0/1
1/0
0/1
= 50pF
DI
V
OH
C
C
V
L
2
+ V
L
OM
SW
= 15pF
= 15pF
OL
GND
GND
GND
V
V
V
SW
≈ 1.5V
CC
CC
CC
GND
V
CC
ISL43485
DIFF OUT (Y - Z)
SKEW = |t
t
OUT (Y, Z)
OUT (Y, Z)
OUT (Y)
OUT (Z)
t
ZH
ZL
DI
, t
DE
, t
NOTE 7
NOTE 7
ZH(SHDN)
ZL(SHDN)
PLH
NOTE 7
FIGURE 2B. MEASUREMENT POINTS
FIGURE 3B. MEASUREMENT POINTS
(Y or Z) - t
t
r
, t
f
t
= 4.5ns
10%
R
50%
t
t
t
1.5V
PLH
PHL
DD
1.5V
PHL
OUTPUT HIGH
(Z OR Y)|
50%
50%
90%
50%
50%
OUTPUT LOW
90%
t
t
PHL
t
PLH
t
1.5V
DD
t
HZ
1.5V
LZ
V
50%
V
50%
50%
10%
OH
OL
t
- 0.25V
+ 0.25V
F
3V
0V
March 15, 2005
3V
0V
+V
-V
FN6071.1
V
V
V
V
V
V
V
OH
OH
OL
OL
0V
OD
OD
OH
CC
OL