LTC1487 Просмотр технического описания (PDF) - Linear Technology
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LTC1487 Datasheet PDF : 8 Pages
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LTC1487
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage (VCC) .............................................. 12V
Control Input Voltage ..................... – 0.5V to VCC + 0.5V
Driver Input Voltage ....................... – 0.5V to VCC + 0.5V
Driver Output Voltage ........................................... ±14V
Receiver Input Voltage .......................................... ±14V
Receiver Output Voltage ................ – 0.5V to VCC + 0.5V
Operating Temperature Range ............. 0°C ≤ TA ≤ 70°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
RO 1
RE 2
DE 3
DI 4
TOP VIEW
R
D
8 VCC
7B
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 = 150°C/ W (S8)
ORDER PART
NUMBER
LTC1487CN8
LTC1487CS8
S8 PART MARKING
1487
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS 0°C ≤ TA ≤ 70°C, VCC = 5V (Notes 2, 3) unless otherwise noted.
SYMBOL
VOD1
VOD2
PARAMETER
Differential Driver Output Voltage (Unloaded)
Differential Driver Output Voltage (with Load)
∆VOD
VOC
∆VOC
VIH
VIL
IIN1
IIN2
Change in Magnitude of Driver Differential Output
Voltage for Complementary Output States
Driver Common-Mode Output Voltage
Change in Magnitude of Driver Common-Mode
Output Voltage for Complementary Output States
Input High Voltage
Input Low Voltage
Input Current
Input Current (A, B)
VTH
Differential Input Threshold Voltage for Receiver
∆VTH
Receiver Input Hysteresis
VOH
Receiver Output High Voltage
VOL
Receiver Output Low Voltage
IOZR
Three-State (High Impedance) Output
Current at Receiver
RIN
Receiver Input Resistance
ICC
Supply Current
ISHDN
IOSD1
IOSD2
IOSR
Supply Current in Shutdown Mode
Driver Short-Circuit Current, VOUT = HIGH
Driver Short-Circuit Current, VOUT = LOW
Receiver Short-Circuit Current
CONDITIONS
IO = 0
R = 50Ω (RS422)
R = 27Ω (RS485), Figure 1
R = 27Ω or R = 50Ω, Figure 1
MIN
q
q 2.0
q 1.5
q
R = 27Ω or R = 50Ω, Figure 1
q
R = 27Ω or R = 50Ω, Figure 1
q
DE, DI, RE
q2
DE, DI, RE
q
DE, DI, RE
q
DE = 0, VCC = 0V or 5.25V, VIN = 12V q
DE = 0, VCC = 0V or 5.25V, VIN = – 7V q
– 7V ≤ VCM ≤ 12V
q – 0.2
VCM = 0V
q
IO = – 4mA, VID = 200mV
q 3.5
IO = 4mA, VID = – 200mV
q
VCC = Max, 0.4V ≤ VO ≤ 2.4V
q
– 7V ≤ VCM ≤ 12V
No Load, Output Enabled
No Load, Output Disabled
DE = 0V, RE = VCC
– 7V ≤ VO ≤ 12V
– 7V ≤ VO ≤ 12V
0V ≤ VO ≤ VCC
q 70
q
q
q 35
q 35
q7
TYP
MAX
5
5
0.2
3
0.2
0.8
±2
0.30
– 0.15
0.2
45
0.4
±1
96
120
200
80
120
1
10
250
250
85
UNITS
V
V
V
V
V
V
V
V
µA
mA
mA
V
mV
V
V
µA
kΩ
µA
µA
µA
mA
mA
mA
2
sn1487 1487fs
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