LTC1535 Ver la hoja de datos (PDF) - Linear Technology
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LTC1535 Datasheet PDF : 18 Pages
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LTC1535
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, VCC2 = 5V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC
VCC Supply Range
VCC2
VCC2 Supply Range
ICC
VCC Supply Current
ICC2
VCC2 Supply Current
Transformer Not Driven (Note 10)
R = 27Ω, Figure 2
No Load
l 4.5
5.5
V
l 4.5
7.5
V
l
13
28
mA
l
63
73
mA
l
7
12
mA
VOD1
Differential Driver Output
VOD2
Differential Driver Output
VOC
Driver Output Common Mode Voltage
No Load
l
5
V
R = 50Ω (RS422) (Note 2), VCC2 = 4.5V
l
2
V
R = 27Ω(RS485), Figure 2, VCC2 = 4.5V
l 1.5
2
V
DC Level, R = 50Ω, Figure 2
l 2.0
2.5
3.0
V
IOSD1
VIH
VIL
Driver Short-Circuit Current
VOUT = HIGH
VOUT = LOW
Logic Input High Voltage
Logic Input Low Voltage
Driver Enabled (DE = 1)
–7V ≤ VCM ≤ 10V
–7V ≤ VCM ≤ 10V
DE, DI, RE
SLO
DE, DI, RE
SLO
l 60
100
150
mA
l 60
100
150
mA
l
2
1.7
V
l
4
2.2
V
l
1.7
0.8
V
l
1.8
1
V
IIN
Input Current (A, B)
VTH
Receiver Input Threshold
ΔVTH
Receiver Input Hysteresis
(Note 3)
VIN = 12V l
0.25
mA
VIN = –7V l
–0.20
mA
–7V ≤ VCM ≤ 12V, (Note 4)
l –200 –90
– 10
mV
–7V ≤ VCM ≤ 12V 0°C ≤ TA ≤ 70°C
l 10
30
70
mV
RIN
Receiver Input Impedance
VIOC
Receiver Input Open Circuit Voltage
VOH
RO Output High Voltage
VOL
RO Output Low Voltage
IOZ
Driver Output Leakage
VOH2
RO2 Output High Voltage
VOL2
RO2 Output Low Voltage
fSW
DC Converter Frequency
– 40°C ≤ TA ≤ 85°C l
5
30
70
mV
l 50
68
100
kΩ
3.4
V
IRO = – 4mA, VCC = 4.5V
IRO = 4mA, VCC = 4.5V
Driver Disabled (DE = 0)
l 3.7
4.0
V
l
0.4
0.8
V
1
μA
IRO2 = – 4mA, VCC = 4.5V
IRO2 = 4mA, VCC = 4.5V
l 3.7
3.9
V
l
0.4
0.8
V
l 290
420
590
kHz
RSWH
RSWL
IREL
IREH
VUVL
VUVH
VISO
DC Converter Impedance High
DC Converter Impedance Low
RE Output Low Current
RE Output High Current
Undervoltage Low Threshold
Undervoltage High Threshold
Isolation Voltage
RE Sink Current, Fault = 0
RE Source Current, Fault = 1
RE Fault = 1, (Note 5)
RE Fault = 0, (Note 5)
1 Minute, (Note 6)
1 Second
l
4
6
l
2.5
5
l –40
–50
–80
l 80
100
130
l 3.70 4.00 4.25
l 4.05 4.20 4.40
2500
3000
Ω
Ω
μA
μA
V
V
VRMS
VRMS
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