LTC1484C Просмотр технического описания (PDF) - Linear Technology
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LTC1484C Datasheet PDF : 16 Pages
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LTC1484
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (VCC) ............................................... 6.5V
Control Input Voltages ................. – 0.3V to (VCC + 0.3V)
Driver Input Voltage ..................... – 0.3V to (VCC + 0.3V)
Driver Output Voltages ................................. – 7V to 10V
Receiver Input Voltages (Driver Disabled) .. –12V to 14V
Receiver Output Voltage ............... – 0.3V to (VCC + 0.3V)
Junction Temperature .......................................... 125°C
Operating Temperature Range
LTC1484C ......................................... 0°C ≤ TA ≤ 70°C
LTC1484I ...................................... – 40°C ≤ TA ≤ 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
RO 1
RE 2
DE 3
DI 4
8 VCC
7B
6A
5 GND
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 200°C/ W
ORDER PART
NUMBER
LTC1484CMS8
MS8 PART MARKING
LTDX
Consult factory for Military grade parts.
TOP VIEW
RO 1
RE 2
8 VCC
R
7B
DE 3
D
DI 4
6A
5 GND
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 130°C/ W (N8)
TJMAX = 125°C, θJA = 135°C/ W (S8)
ORDER PART
NUMBER
LTC1484CN8
LTC1484CS8
LTC1484IN8
LTC1484IS8
S8 PART MARKING
1484
1484I
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V ±5% (Notes 2 and 3) unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
VOD1
Differential Driver Output Voltage (Unloaded)
IOUT = 0
q
VOD2
Differential Driver Output Voltage (with Load)
R = 50Ω (RS422)
q
R = 27Ω (RS485) Figure 1
q
R = 22Ω, Figure 1
q
VOD3
Differential Driver Output Voltage
(with Common Mode)
VTST = – 7V to 12V, Figure 2
q
∆VOD
VOC
∆|VOC|
Change in Magnitude of Driver Differential
R = 22Ω, 27Ω or R = 50Ω, Figure 1 q
Output Voltage for Complementary Output States VTST = – 7V to 12V, Figure 2
Driver Common Mode Output Voltage
R = 22Ω, 27Ω or R = 50Ω, Figure 1 q
Change in Magnitude of Driver Common Mode
R = 22Ω, 27Ω or R = 50Ω, Figure 1 q
Output Voltage for Complementary Output States
VIH
Input High Voltage
DE, DI, RE
q
VIL
Input Low Voltage
DE, DI, RE
q
IIN1
Input Current
DE, DI, RE
q
IIN2
Input Current (A, B)
DE = 0, VCC = 0 or 5V, VIN = 12V
q
DE = 0, VCC = 0 or 5V, VIN = – 7V
q
VTH
Differential Input Threshold Voltage for Receiver – 7V ≤ VCM ≤ 12V, DE = 0
q
MIN TYP MAX UNITS
VCC
V
2
V
1.5
5
V
1.5
5
V
1.5
5
V
0.2
V
3
V
0.2
V
2.0
– 0.20
V
0.8
V
±2
µA
1.0
mA
– 0.8
mA
– 0.015
V
2
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