2
LTC1545
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
ORDER PART
NUMBER
(Note 1)
Supply Voltage
VCC ..................................................................... 6.5V
VEE........................................................ – 10V to 0.3V
VDD ....................................................... – 0.3V to 10V
Input Voltage
Transmitters ........................... – 0.3V to (VCC + 0.3V)
Receivers ............................................... – 18V to 18V
Logic Pins .............................. – 0.3V to (VCC + 0.3V)
Output Voltage
Transmitters .................. (VEE – 0.3V) to (VDD + 0.3V)
Receivers ................................ – 0.3V to (VCC + 0.3V)
Short-Circuit Duration
Transmitter Output ..................................... Indefinite
Receiver Output .......................................... Indefinite
VEE.................................................................. 30 sec
Operating Temperature Range
LTC1545C .............................................. 0
°C to 70°C
LTC1545I ........................................... – 40
°C to 85°C
Storage Temperature Range ................ – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300
°C
LTC1545CG
LTC1545IG
ELECTRICAL CHARACTERISTICS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
VCC
VDD
D1
D2
D3
R1
R2
R3
D4
R4
M0
M1
M2
DCE/DTE
D4ENB
R4EN
R5
D5
VEE
GND
D1 A
D1 B
D2 A
D2 B
D3/R1 A
D3/R1 B
R2 A
R2 B
R3 A
R3 B
D4 A
R4 A
R5 A
D5 A
VDD
VCC
R1
D2
D1
D3
R3
G PACKAGE
36-LEAD PLASTIC SSOP
D5
R5
D4
R2
R4
TJMAX = 150°C, θJA = 65°C/ W
Consult factory for Military grade parts.
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VCC = 5V, VDD = 8V, VEE = – 7V for V.28, – 5.5V for V.10, V.11 (Notes 2, 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supplies
ICC
VCC Supply Current (DCE Mode,
RS530, RS530-A, X.21 Modes, No Load
q
2.7
5
mA
All Digital Pins = GND or VCC)
RS530, RS530-A, X.21 Modes, Full Load
q
110
150
mA
V.28 Mode, No Load
q
13
mA
V.28 Mode, Full Load
q
13
mA
No-Cable Mode, D4ENB = HIGH
q
10
500
A
IEE
VEE Supply Current (DCE Mode,
RS530, RS530-A, X.21 Modes, No Load
q
2.0
4.0
mA
All Digital Pins = GND or VCC)
RS530, X.21 Modes, Full Load
q
23
35
mA
RS530-A, Full Load
q
34
50
mA
V.28 Mode, No Load
q
13
mA
V.28 Mode, Full Load
q
12
18
mA
No-Cable Mode, D4ENB = HIGH
q
10
500
A
IDD
VDD Supply Current (DCE Mode,
RS530, RS530-A, X.21 Modes, NoLoad
q
0.3
2
mA
All Digital Pins = GND or VCC)
RS530, RS530-A, X.21 Modes, Full Load
q
0.3
2
mA
V.28 Mode, No Load
q
13
mA
V.28 Mode, Full Load
q
13.5
18
mA
No-Cable Mode, D4ENB = HIGH
q
10
500
A
PD
Internal Power Dissipation (DCE Mode,
RS530, RS530-A, X.21 Modes, Full Load
340
mW
(All Digital Pins = GND or VCC)
V.28 Mode, Full Load
64
mW
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