LTC1481
W W
U W
U W
U
ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
ORDER PART
NUMBER
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
LTC1481C ....................................... 0°C ≤ TA ≤ 70°C
LTC1481I.................................... –40°C ≤ TA ≤ 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
TOP VIEW
R
RO
RE
DE
DI
1
2
3
4
V
B
A
8
7
6
5
CC
LTC1481CN8
LTC1481IN8
LTC1481CS8
LTC1481IS8
D
GND
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
S8 PART MARKING
TJMAX = 125°C, θJA = 130°C/ W (N8)
TJMAX = 125°C, θJA = 150°C/ W (S8)
1481
1481I
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V (Notes 2, 3) unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Differential Driver Output Voltage (Unloaded)
Differential Driver Output Voltage (with Load)
I = 0
●
5
V
OD1
OD2
O
R = 50Ω (RS422)
R = 27Ω (RS485), Figure 1
●
●
2.0
1.5
V
V
5
∆V
OD
Change in Magnitude of Driver Differential Output
Voltage for Complementary Output States
R = 27Ω or R = 50Ω, Figure 1
●
0.2
V
V
Driver Common Mode Output Voltage
R = 27Ω or R = 50Ω, Figure 1
R = 27Ω or R = 50Ω, Figure 1
●
●
3
V
V
OC
∆ V
Change in Magnitude of Driver Common Mode
Output Voltage for Complementary Output States
0.2
OC
V
V
Input High Voltage
Input Low Voltage
Input Current
DE, DI, RE
DE, DI, RE
DE, DI, RE
●
●
●
2
V
V
IH
IL
0.8
I
I
±2
µA
IN1
IN2
Input Current (A, B)
DE = 0, V = 0V or 5.25V, V = 12V
●
●
1.0
–0.8
mA
mA
CC
IN
DE = 0, V = 0V or 5.25V, V = –7V
CC
IN
V
Differential Input Threshold Voltage for Receiver
Receiver Input Hysteresis
–7V ≤ V ≤ 12V
●
●
●
●
●
–0.2
3.5
0.2
V
mV
V
TH
CM
∆V
V
= 0V
CM
45
TH
V
V
Receiver Output High Voltage
I = –4mA, V = 200mV
O ID
OH
Receiver Output Low Voltage
I = 4mA, V = –200mV
0.4
V
OL
O
ID
I
Three-State (High Impedance) Output
Current at Receiver
V
= Max, 0.4V ≤ V ≤ 2.4V
±1
µA
OZR
CC
O
R
Receiver Input Resistance
Supply Current
–7V ≤ V ≤ 12V
●
12
kΩ
IN
CM
I
No Load, Output Enabled
No Load, Output Disabled
●
●
300
80
500
120
µA
µA
CC
I
I
I
I
Supply Current in Shutdown Mode
DE = 0, RE = V
1
10
250
250
85
µA
mA
mA
mA
SHDN
OSD1
OSD2
OSR
CC
Driver Short-Circuit Current, V
Driver Short-Circuit Current, V
Receiver Short-Circuit Current
= HIGH
= LOW
–7V ≤ V ≤ 12V
●
●
●
35
35
7
OUT
OUT
O
–7V ≤ V ≤ 12V
O
0V ≤ V ≤ V
O
CC
1481fa
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