2
LTC2844
sn2844 2844fs
ORDER PART
NUMBER
(Note 1)
Supply Voltage
V
CC
....................................................... –0.3V to 6.5V
V
IN
.....................................................................
–0.3V to 6.5V
V
EE
......................................................................
–10V to 0.3V
V
DD
.....................................................................
–0.3V to 10V
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
IN
+ 0.3V)
Short-Circuit Duration
Transmitter Output ...................................... Indefinite
Receiver Output........................................... Indefinite
V
EE
................................................................... 30 sec
Operating Temperature Range
LTC2844CG ............................................. 0°C to 70°C
LTC2844IG ......................................... –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
LTC2844CG
LTC2844IG
T
JMAX
= 125°C, θ
JA
= 90°C/W, θ
JC
= 35°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The ● denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
IN
= 3.3V, V
DD
= 8V, V
EE
= – 7V for V.28, – 5.5V for V.10, V.11
(Notes 2, 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supplies
I
CC
V
CC
Supply Current (DCE Mode, RS530, RS530-A, X.21 Modes, No Load 2.7 mA
All Digital Pins = GND or V
IN
) RS530, RS530-A, X.21 Modes, Full Load ● 95 120 mA
V.28 Mode, No Load
● 12 mA
V.28 Mode, Full Load
● 12 mA
No-Cable Mode
● 600 1200 µA
I
EE
V
EE
Supply Current (DCE Mode Unless RS530, RS530-A, X.21 Modes, No Load 1.6 mA
Otherwise Noted, All Digital Pins = GND or V
IN
) RS530, X.21 Modes, Full Load (DTE Mode) 14 mA
RS530-A, Full Load (DTE Mode) 25 mA
V.28 Mode, No Load 1 mA
V.28 Mode, Full Load 7.5 mA
No-Cable Mode 10 µA
I
DD
V
DD
Supply Current (DCE Mode, RS530, RS530-A, X.21 Modes, No Load 0.2 mA
All Digital Pins = GND or V
IN
) RS530, RS530-A, X.21 Modes, Full Load 0.2 mA
V.28 Mode, No Load 1 mA
V.28 Mode, Full Load 8 mA
No-Cable Mode 10 µA
I
VIN
V
IN
Supply Current (DCE Mode, All Modes Except No-Cable Mode 490 µA
All Digital Pins = GND or V
IN
)
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
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ELECTRICAL CHARACTERISTICS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
V
DD
D1
D2
D3
R1
R2
R3
D4
R4
M0
M1
M2
DCE/DTE
V
EE
GND
D1 A
D1 B
D2 A
D2 B
D3/R1 A
D3/R1 B
R2 A
R2 B
R3 A
R3 B
D4/R4 A
V
IN
R1
D2
D1
R2
D3
G PACKAGE
28-LEAD PLASTIC SSOP
R3
D4
R4