LTC2872
elecTrical characTerisTics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = VL = 3.3V, TE485_1 = TE485_2 = 0V, LB = 0V unless otherwise noted.
SYMBOL PARAMETER
RS232 Driver
CONDITIONS
MIN
TYP
MAX
UNITS
l
l
l
l
V
OLD
V
OHD
Output Low Voltage
R = 3kΩ, V ≤ –6V
–5
5
–5.7
6.2
V
V
V
L
EE
EE
Output High Voltage
R = 3kΩ, V ≥ 6.5V
V
DD
L
DD
Three-State (High Impedance) Output Current
Output Short-Circuit Current
Y or Z = ±±5V
Y or Z = 0V
±±56
±90
µA
mA
±35
RS232 Receiver
Input Threshold Voltage
l
l
l
0.6
0.±
±.5
0.4
2.5
±.0
0.4
V
V
V
Input Hysteresis
Output Low Voltage
I(RA, RB) = ±mA (Sinking),
±.7V ≤ V ≤ 5.5V
L
l
Output High Voltage
I(RA, RB) = –±mA (Sourcing),
V – 0.4
L
V
±.7V ≤ V ≤ 5.5V
L
l
l
l
Input Resistance
–±5V ≤ (A, B) ≤ ±5V, Receiver Enabled
3
5
0
7
kΩ
μA
Three-State (High Impedance) Output Current
Output Short-Circuit Current
0V ≤ (RA, RB) ≤ V
±5
L
V = 5.5V, 0V ≤ (RA, RB) ≤ V
±25
±50
mA
L
L
Logic Inputs
l
l
Threshold Voltage
Input Current
0.4
0.75•V
V
L
0
±5
µA
Power Supply Generator
V
DD
V
EE
Regulated V Output Voltage
RS232 Drivers Enabled, Outputs Loaded with
7
V
V
DD
R = 3kΩ to GND, DY± = DY2 = V ,
L
L
Regulated V Output Voltage
–6.3
EE
DZ± = DZ2 = 0V (Note 3)
ESD
Interface Pins (A, B, Y, Z)
All Other Pins
Human Body Model to GND or V , Powered
±±6
±4
kV
kV
CC
or Unpowered (Note 7)
Human Body Model (Note 7)
2872f
4
Linear Systems [ Linear Systems ]
