3
LTC1535
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. 0°C ≤ T
A
≤ 70°C, V
CC
= 5V, V
CC2
= 5V unless otherwise noted.
I
OZ
Driver Output Leakage 1 µA
V
OH2
RO2 Output High Voltage I
RO2
= –4mA, V
CC
= 4.5V ● 3.7 3.9 V
I
RO2
= –10mA, V
CC
= 4.5V 3.4 V
V
OL2
RO2 Output Low Voltage I
RO2
= 4mA, V
CC
= 4.5V ● 0.4 0.8 V
I
RO2
= 10mA, V
CC
= 4.5V 0.9 V
f
SW
DC Converter Frequency ● 290 420 520 kHz
R
SWH
DC Converter R High V
CC
= 4.5V ● 46 Ω
R
SWL
DC Converter R Low V
CC
= 4.5V ● 2.5 5 Ω
I
REL
RE Output Low Current RE Sink Current, Fault = 0 ● –40 –50 –80 µA
I
REH
RE Output High Current RE Source Current, Fault = 1 ● 80 100 130 µA
V
UVL
Undervoltage Low Threshold RE Fault = 1, Note 5 ● 3.90 4.00 4.25 V
V
UVH
Undervoltage High Threshold RE Fault = 0, Note 5 ● 4.05 4.20 4.40 V
V
ISO
Isolation Voltage 1 Minute, Note 6 2500 V
RMS
1 Second 3000 V
RMS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
SJ
Data Sample Jitter Figure 8, Note 7 ● 250 285 ns
f
MAX
Max Baud Rate Jitter = 10% Max, SLO = 1, Note 8 ● 350 kBd
t
PLH
Driver Input to Output DE = 1, SLO = 1, Figure 3, Figure 5 ● 600 855 ns
DE = 1, SLO = 0, Figure 3, Figure 5
● 1300 1560 ns
t
PHL
Driver Input to Output DE = 1, SLO = 1, Figure 3, Figure 5 ● 600 855 ns
DE = 1, SLO = 0, Figure 3, Figure 5
● 1300 1560 ns
t
r
, t
f
Driver Rise or Fall Time DE = 1, SLO = 1, Figure 3, Figure 5 ● 20 50 ns
DE = 1, SLO = 0
● 150 500 1000 ns
t
ZH
Driver Enable to Output DI = 1, SLO = 1, Figure 4, Figure 6 ● 1000 1400 ns
t
ZL
Driver Enable to Output DI = 0, SLO = 1, Figure 4, Figure 6 ● 1000 1400 ns
t
LZ
Driver Disable to Output DI = 0, SLO = 1, Figure 4, Figure 6 ● 700 1000 ns
t
HZ
Driver Disable to Output DI = 1, SLO = 1, Figure 4, Figure 6 ● 700 1000 ns
t
PLH
Receiver Input to RO RE = 0, Figure 2, Figure 7 ● 600 855 ns
t
PHL
Receiver Input to RO RE = 0, Figure 2, Figure 7 ● 600 855 ns
t
PLH
Receiver Input to RO2 RE = 0, Figure 2, Figure 7 30 ns
t
PHL
Receiver Input to RO2 RE = 0, Figure 2, Figure 7 30 ns
t
r
, t
f
Receiver Rise or Fall Time RE = 0, Figure 2, Figure 7 20 ns
t
LZ
Receiver Disable to Output Figure 2, Figure 8 30 ns
t
HZ
Receiver Disable to Output Figure 2, Figure 8 30 ns
t
START
Initial Start-Up Time Note 9 1200 ns
t
TOF
Data Time-Out Fault Note 9 1200 ns
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. 0°C ≤ T
A
≤ 70°C, V
CC
= 5V, V
CC2
= 5V, R = 27Ω (RS485) unless
otherwise noted.
SWITCHI G CHARACTERISTICS
U
ELECTRICAL CHARACTERISTICS
