Datasheet

Electrical characteristics ST26C31B
6/15
3 Electrical characteristics
Table 6. Electrical characteristics (V
CC
= 5 V ± 10 %, unless otherwise specified
(1)
)
1. Unless otherwise specified, min./max. limits apply across the recommended operating temperature range. All typical are
given for V
CC
= 5 V and T
A
= 25 °C
Symbol Parameter Test conditions
Value
Unit
Min. Typ. Max.
V
IH
High level input voltage 2 V
V
IL
Low level input voltage 0.8 V
V
OH
High level output voltage V
IN
= V
IH
or V
IL
, I
OUT
= -20mA 2.5 3.4 V
V
OL
Low level output voltage V
IN
= V
IH
or V
IL
, I
OUT
= +20mA 0.3 0.5 V
V
T
Differential output voltage R
L
= 100 Ω
(2)
2. See EIA Specification RS422 for exact test conditions.
23.1 V
V
T
-V
T
Difference in differential
output voltage
R
L
= 100 Ω
(2)
0.4 V
V
OS
Common mode output
voltage
R
L
= 100 Ω
(2)
1.8 3 V
V
OS
-
V
OS
Difference in common
mode output voltage
R
L
= 100 Ω
(2)
0.4 V
I
IN
Input current V
IN
= V
CC
, GND, V
IH
or V
IL
±1 µA
I
CC
Quiescent supply current
(2)
I
OUT
= 0 µA
V
IN
= V
CC
or GND 200 500 µA
V
IN
= 2.4 or 0.5 V
(3)
3. Measured per pin input. All other input at V
CC
or GND.
0.8 2 mA
I
OZ
3-state output leakage
current
V
OUT
= V
CC
or GND
ENABLE = V
IL
ENABLE = V
IH
±0.5 ±5 µA
I
SC
Output short circuit
current
V
IN
= V
CC
or GND
(2)
(4)
4. This is the current sourced when a high output is shorted to ground. Only one output at time should be shorted.
-30 -150 mA
I
OFF
Power off output leakage
current
(2)
V
CC
= 0 V
V
OUT
= 6 V 100 µA
V
OUT
= -0.25 V -100 µA