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LTC490 Datasheet(Fiches technique) 2 Page - Linear Technology

Numéro de pièce LTC490
Description  Differential Driver and Receiver Pair
Télécharger  8 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
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LTC490
2
(Note 1)
Supply Voltage (VCC) ............................................... 12V
Driver Input Currents ........................... – 25mA to 25mA
Driver Input Voltages ....................... –0.5V to VCC +0.5V
Driver Output Voltages ..........................................
±14V
Receiver Input Voltages .........................................
±14V
Receiver Output Voltages ................ –0.5V to VCC +0.5V
Operating Temperature Range
LTC490C................................................. 0
°C to 70°C
LTC490I............................................. – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
A
G
A
U
A
R
BSOLUTEXI
TI
S
PACKAGE/ORDER I FOR ATIO
TJMAX = 125°C, θJA = 100°C/ W (N8)
TJMAX = 150°C, θJA = 150°C/ W (S8)
N8 PACKAGE
8-LEAD PLASTIC DIP
S8 PACKAGE
8-LEAD PLASTIC SOIC
1
2
3
4
8
7
6
5
TOP VIEW
VCC
R
D
GND
A
B
Z
Y
R
D
ORDER PART
NUMBER
S8 PART MARKING
LTC490CN8
LTC490CS8
LTC490IN8
LTC490IS8
490
490I
ELECTRICAL C
C
HARA TERISTICS
C
D
VCC = 5V ±5%
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VOD1
Differential Driver Output Voltage (Unloaded)
IO = 0
q
5V
VOD2
Differential Driver Output Voltage (with Load)
R = 50
Ω (RS422)
q
2V
R = 27
Ω (RS485) (Figure 1)
q
1.5
5
V
∆VOD
Change in Magnitude of Driver Differential Output
R = 27
Ω or R = 50Ω (Figure 1)
q
0.2
V
Voltage for Complementary Output States
VOC
Driver Common-Mode Output Voltage
R = 27
Ω or R = 50Ω (Figure 1)
q
3V
∆ VOC
Change in Magnitude of Driver Common Mode
R = 27
Ω or R = 50Ω (Figure 1)
q
0.2
V
Output Voltage for Complementary Output States
VIH
Input High Voltage (D)
q
2.0
V
VIL
Input Low Voltage (D)
q
0.8
V
lIN1
Input Current (D)
q
±2
µA
lIN2
Input Current (A, B)
VCC = 0V or 5.25V
VIN = 12V
q
1mA
VIN = – 7V
q
– 0.8
mA
VTH
Differential Input Threshold Voltage for Receiver
– 7V
≤ VCM ≤ 12V
q
– 0.2
0.2
V
∆VTH
Receiver Input Hysteresis
VCM = 0V
q
70
mV
VOH
Receiver Output High Voltage
IO = –4mA, VID = 0.2V
q
3.5
V
VOL
Receiver Output Low Voltage
IO = 4mA, VID = – 0.2V
q
0.4
V
IOZR
Three-State Output Current at Receiver
VCC = Max 0.4V ≤ VO ≤ 2.4V
q
±1
µA
ICC
Supply Current
No Load; D = GND or VCC
q
300
500
µA
RIN
Receiver Input Resistance
– 7V
≤ VO ≤ 12V
q
12
k
IOSD1
Driver Short-Circuit Current, VOUT = High
VO = – 7V
q
100
250
mA
IOSD2
Driver Short-Circuit Current, VOUT = Low
VO = 12V
q
100
250
mA
IOSR
Receiver Short-Circuit Current
0V
≤ VO ≤ VCC
q
785
mA
IOZ
Driver Three-State Output Current
VO = – 7V to 12V
q
±2
±200
µA
Consult factory for Military grade parts.




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