Datasheet
2
LTC1344
ABSOLUTE MAXIMUM RATINGS
W
WW
U
WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER PART
NUMBER
LTC1344CG
LTC1344IG
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
G PACKAGE
24-LEAD PLASTIC SSOP
24
23
22
21
20
19
18
17
16
15
14
13
M0
V
EE
R1C
R1B
R1A
R2A
R2B
R2C
R3A
R3B
R3C
GND
M1
M2
DCE/DTE
LATCH
R6B
R6A
R5A
R5B
R4A
R4B
V
CC
GND
T
JMAX
= 150°C, θ
JA
= 100°C/W
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°.
V
CC
= 5V ±5%, V
EE
= –5V ±5%, T
A
= T
MIN
to T
MAX
(Notes 2, 3) unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supplies
I
CC
Supply Current All Digital Pins = GND or V
CC
● 200 700 µA
Terminator Pins
R
V.35
Differential Mode Impedance All Loads (Figure 1), – 2V ≤ V
CM
≤ 2V (Commercial) ● 90 103 110 Ω
Common Mode Impedance All Loads (Figure 2), – 2V ≤ V
CM
≤ 2V (Commercial) ● 135 153 165 Ω
All Loads (Figure 1), – 2V ≤ V
CM
≤ 2V (Industrial) ● 90 104 125 Ω
All Loads (Figure 2), – 2V ≤ V
CM
≤ 2V (Industrial) ● 130 153 170 Ω
R
V.11
Differential Mode Impedance All Loads (Figure 1), – 7V ≤ V
CM
≤ 7V (Commercial) 100 104 Ω
All Loads (Figure 1), V
CM
= 0V (Commercial) ● 100 104 110 Ω
All Loads (Figure 1), V
CM
= 0V (Industrial) ● 95 104 125 Ω
I
LEAK
High Impedance Leakage Current All Loads, –7V ≤ V
CM
≤ 7V (Commercial) ● ±1 ±50 µA
Logic Inputs
V
IH
Input High Voltage All Logic Input Pins ● 2V
V
IL
Input Low Voltage All Logic Input Pins ● 0.8 V
I
IN
Input Current All Logic Input Pins ● ±10 µA
Note 3: All typicals are given at V
CC
= 5V, V
EE
= –5V, T
A
= 25°C.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are reference to ground unless otherwise
specified.
(Note 1)
Positive Supply Voltage (V
CC
)................................... 7V
Negative Supply Voltage (V
EE
) ........................... –13.2V
Input Voltage (Logic Inputs) .... V
EE
– 0.3V to V
CC
+ 0.3V
Input Voltage (Load Inputs) .................................. ±18V
Operating Temperature Range
LTC1344C ............................................... 0°C to 70°C
LTC1344I........................................... – 40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C