Datasheet

2
LTC1387
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
ORDER PART
NUMBER
(Note 1)
Supply Voltage (V
CC
) ............................................. 6.5V
Input Voltage
Drivers ................................... –0.3V to (V
CC
+ 0.3V)
Receivers ............................................. –25V to 25V
485/232, ON, DXEN
RXEN, SLEW ........................... –0.3V to (V
CC
+ 0.3V)
Output Voltage
Drivers ................................................. –18V to 18V
Receivers ............................... –0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration
Output ........................................................ Indefinite
V
DD
, V
EE
, C1
+
, C1
–
, C2
+
, C2
–
.......................... 30 sec
Operating Temperature Range
LTC1387C .............................................. 0°C to 70°C
LTC1387I ........................................... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C
WU
U
PACKAGE
/
O
RDER I FOR ATIO
Consult factory for Military grade parts.
T
JMAX
= 125°C, θ
JA
= 120°C/W (G)
T
JMAX
= 125°C, θ
JA
= 75°C/W (SW)
1
2
3
4
5
6
7
8
9
10
TOP VIEW
SW PACKAGE
20-LEAD PLASTIC SO
G PACKAGE
20-LEAD PLASTIC SSOP
20
19
18
17
16
15
14
13
12
11
C1
+
C1
–
V
DD
A
B
Y
Z
485/232
DXEN
GND
C2
+
C2
–
V
CC
R
A
R
B
D
Y
D
Z
/SLEW
ON
RXEN
V
EE
DC ELECTRICAL CHARACTERISTICS
LTC1387CG
LTC1387CSW
LTC1387IG
LTC1387ISW
T
A
= 25°C, V
CC
= 5V, C1 = C2 = C3 = C4 = 0.1µF (Notes 2, 3), unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
RS485 Driver (485/232 = High, ON = DXEN = High)
V
OD1
Differential Driver Output Voltage (Unloaded) I
O
= 0 ● 6V
V
OD2
Differential Driver Output Voltage (With Load) Figure 1, R = 50Ω (RS422) ● 2.0 6 V
Figure 1, R = 27Ω (RS485)
● 1.5 6 V
∆V
OD
Change in Magnitude of Driver Differential Figure 1, R = 27Ω or R = 50Ω ● 0.2 V
Output Voltage for Complementary Output States
V
OC
Driver Common Mode Output Voltage Figure 1, R = 27Ω or R = 50Ω ● 3V
∆V
OC
 Change in Magnitude of Driver Common Mode Figure 1, R = 27Ω or R = 50Ω ● 0.2 V
Output Voltage for Complementary Output States
I
OSD
Driver Short-Circuit Current V
O
= –7V, 12V; V
O
= High ● 35 250 mA
V
O
= –7V, 12V; V
O
= Low (Note 4) ● 10 250 mA
I
OZD
Three-State Output Current (Y, Z) –7V ≤ V
O
≤ 12V ±5 500 µA
RS232 Driver (485/232 = Low, ON = DXEN = High)
V
O
Output Voltage Swing Figure 4, R
L
= 3k, Positive ● 5 6.5 V
Figure 4, R
L
= 3k, Negative ● –5 –6.5 V
I
OSD
Output Short-Circuit Current V
O
= 0V ● ±17 ±60 mA
Driver Inputs and Control Inputs
V
IH
Input High Voltage D
Y
, D
Z
, DXEN, RXEN, ON, 485/232, SLEW ● 2V
V
IL
Input Low Voltage D
Y
, D
Z
, DXEN, RXEN, ON, 485/232, SLEW ● 0.8 V
I
IN
Input Current D
Y
, D
Z
, DXEN, RXEN, ON, 485/232 ● ±0.1 ±10 µA
SLEW (Note 5)
● 5 15 µA