LTC1544
ABSOLUTE
(Note 1)
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
V
CC
V
DD
D1
D2
D3
R1
R2
R3
D4
1
2
3
D1
4
5
6
7
8
9
R1
R2
R3
D4
R4
D2
D3
25 D1 B
24 D2 A
23 D2 B
22 D3/R1 A
21 D3/R1 B
20 R2 A
19 R2 B
18 R3 A
17 R3 B
16 D4/R4 A
15 INVERT
G PACKAGE
28-LEAD PLASTIC SSOP
28 V
EE
27 GND
26 D1 A
Supply Voltage, V
CC
................................................ 6.5V
Input Voltage
Transmitters ........................... – 0.3V to (V
CC
+ 0.3V)
Receivers ............................................... – 18V to 18V
Logic Pins .............................. – 0.3V to (V
CC
+ 0.3V)
Output Voltage
Transmitters .................. (V
EE
– 0.3V) to (V
DD
+ 0.3V)
Receivers ................................ – 0.3V to (V
CC
+ 0.3V)
V
EE
........................................................ – 10V to 0.3V
V
DD
....................................................... – 0.3V to 10V
Short-Circuit Duration
Transmitter Output ..................................... Indefinite
Receiver Output .......................................... Indefinite
V
EE
.................................................................. 30 sec
Operating Temperature Range
LTC1544CG ............................................. 0°C to 70°C
LTC1544IG ........................................ – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER PART
NUMBER
LTC1544CG
LTC1544IG
R4 10
M0 11
M1 12
M2 13
DCE/DTE 14
T
JMAX
= 150°C,
θ
JA
= 65°C/ W
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
SYMBOL
Supplies
I
CC
V
CC
Supply Current (DCE Mode,
All Digital Pins = GND or V
CC
)
PARAMETER
The
q
denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
DD
= 8V, V
EE
= – 7V for V.28, – 5.5V for V.10, V.11 (Notes 2, 3)
CONDITIONS
RS530, RS530-A, X.21 Modes, No Load
RS530, RS530-A, X.21 Modes, Full Load
V.28 Mode, No Load
V.28 Mode, Full Load
No-Cable Mode
RS530, RS530-A, X.21 Modes, No Load
RS530, X.21 Modes, Full Load
RS530-A, Full Load
V.28 Mode, No Load
V.28 Mode, Full Load
No-Cable Mode
RS530, RS530-A, X.21 Modes, NoLoad
RS530, RS530-A, X.21 Modes, Full Load
V.28 Mode, No Load
V.28 Mode, Full Load
No-Cable Mode
RS530, RS530-A, X.21 Modes, Full Load
V.28 Mode, Full Load
MIN
TYP
2.7
95
1
1
10
2.1
14
25
1
12
10
0.2
0.2
1
12
10
300
54
MAX
UNITS
mA
mA
mA
mA
µA
mA
mA
mA
mA
mA
µA
mA
mA
mA
mA
µA
mW
mW
q
q
q
q
120
2
2
200
I
EE
V
EE
Supply Current (DCE Mode,
All Digital Pins = GND or V
CC
)
V
EE
= – 5.6V (RS530, RS530-A Modes)
V
EE
= – 8.46V (V.28 Mode)
I
DD
V
DD
Supply Current (DCE Mode,
All Digital Pins = GND or V
CC
)
V
DD
= 8.73V
P
D
Internal Power Dissipation (DCE Mode,
(All Digital Pins = GND or V
CC
)
2
U
W
U
U
W W
W
LINER [ LINEAR TECHNOLOGY ]
