LTC1535
3
1535fa
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. V
CC
= 5V, V
CC2
= 5V unless otherwise noted.
V
IOC
Receiver Input Open Circuit Voltage 3.4 V
V
OH
RO Output High Voltage I
RO
= –4mA, V
CC
= 4.5V ● 3.7 4.0 V
V
OL
RO Output Low Voltage I
RO
= 4mA, V
CC
= 4.5V ● 0.4 0.8 V
I
OZ
Driver Output Leakage Driver Disabled (DE = 0) 1 µA
V
OH2
RO2 Output High Voltage I
RO2
= –4mA, V
CC
= 4.5V ● 3.7 3.9 V
V
OL2
RO2 Output Low Voltage I
RO2
= 4mA, V
CC
= 4.5V ● 0.4 0.8 V
f
SW
DC Converter Frequency ● 290 420 590 kHz
R
SWH
DC Converter Impedance High ● 46 Ω
R
SWL
DC Converter Impedance Low ● 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) ● 3.70 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) ● 250 410 kBd
t
PLH
Driver Input to Output DE = 1, SLO = 1, Figure 4, Figure 6 ● 600 855 ns
DE = 1, SLO = 0, Figure 4, Figure 6
● 1300 1560 ns
t
PHL
Driver Input to Output DE = 1, SLO = 1, Figure 4, Figure 6 ● 600 855 ns
DE = 1, SLO = 0, Figure 4, Figure 6
● 1300 1560 ns
t
r
, t
f
Driver Rise or Fall Time DE = 1, SLO = 1, Figure 4, Figure 6 ● 20 100 ns
DE = 1, SLO = 0, V
CC
= V
CC2
= 4.5V ● 150 500 1000 ns
t
ZH
Driver Enable to Output DI = 1, SLO = 1, Figure 5, Figure 7 ● 1000 1400 ns
t
ZL
Driver Enable to Output DI = 0, SLO = 1, Figure 5, Figure 7 ● 1000 1400 ns
t
LZ
Driver Disable to Output DI = 0, SLO = 1, Figure 5, Figure 7 ● 700 1300 ns
t
HZ
Driver Disable to Output DI = 1, SLO = 1, Figure 5, Figure 7 ● 700 1300 ns
t
PLH
Receiver Input to RO RE = 0, Figure 3, Figure 8 ● 600 855 ns
t
PHL
Receiver Input to RO RE = 0, Figure 3, Figure 8 ● 600 855 ns
t
PLH
Receiver Input to RO2 RE = 0, Figure 3, Figure 8 30 ns
t
PHL
Receiver Input to RO2 RE = 0, Figure 3, Figure 8 30 ns
t
r
, t
f
Receiver Rise or Fall Time RE = 0, Figure 3, Figure 8 20 ns
t
LZ
Receiver Disable to Output Figure 3, Figure 9 30 ns
t
HZ
Receiver Disable to Output Figure 3, Figure 9 30 ns
t
START
Initial Start-Up Time (Note 9) 1200 ns
t
TOF
Data Time-Out Fault (Note 9) 1200 ns
ST1, ST2 Duty Cycle 0°C ≤ T
A
≤ 70°C ● 56 %
–40°C ≤ T
A
≤ 85°C ● 57 %
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
CC2
= 5V, R = 27Ω (RS485) unless otherwise noted.
SWITCHI G CHARACTERISTICS
U
ELECTRICAL CHARACTERISTICS
