LTC2872
elecTrical characTerisTics
SYMBOL
V
OLD
V
OHD
PARAMETER
Output Low Voltage
Output High Voltage
Three-State (High Impedance) Output Current
Output Short-Circuit Current
RS232 Receiver
Input Threshold Voltage
Input Hysteresis
Output Low Voltage
Output High Voltage
Input Resistance
Three-State (High Impedance) Output Current
Output Short-Circuit Current
Logic Inputs
Threshold Voltage
Input Current
Power Supply Generator
V
DD
V
EE
ESD
Interface Pins (A, B, Y, Z)
All Other Pins
Human Body Model to GND or V
CC
, Powered
or Unpowered (Note 7)
Human Body Model (Note 7)
±16
±4
kV
kV
Regulated V
DD
Output Voltage
Regulated V
EE
Output Voltage
RS232 Drivers Enabled, Outputs Loaded with
R
L
= 3kΩ to GND, DY1 = DY2 = V
L
,
DZ1 = DZ2 = 0V (Note 3)
7
–6.3
V
V
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= V
L
= 3.3V, TE485_1 = TE485_2 = 0V, LB = 0V unless otherwise noted.
CONDITIONS
R
L
= 3kΩ, V
EE
≤ –6V
R
L
= 3kΩ, V
DD
≥ 6.5V
Y or Z = ±15V
Y or Z = 0V
l
l
l
l
MIN
–5
5
TYP
–5.7
6.2
±35
MAX
V
EE
V
DD
±156
±90
2.5
1.0
0.4
UNITS
V
V
µA
mA
V
V
V
V
RS232 Driver
0.6
0.1
1.5
0.4
I(RA, RB) = 1mA (Sinking),
1.7V ≤ V
L
≤ 5.5V
I(RA, RB) = –1mA (Sourcing),
1.7V ≤ V
L
≤ 5.5V
–15V ≤ (A, B) ≤ 15V, Receiver Enabled
0V ≤ (RA, RB) ≤ V
L
V
L
= 5.5V, 0V ≤ (RA, RB) ≤ V
L
l
l
l
l
l
V
L
– 0.4
3
5
0
±25
0.4
0
7
±5
±50
0.75• V
L
±5
kΩ
μA
mA
V
µA
2872f
4
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
