CS8403A CS8404A
DIGITAL CHARACTERISTICS - RS422 DRIVERS
(TXP, TXN pins only; VD+ = 5.0V 卤5%)
Parameters
Output High Voltage
Output Low Voltage
I
OH
= -30 mA
I
OL
= 30 mA
Symbol
V
OH
V
OL
Min
(VD+) - 0.7
-
Typ
(VD+) - 0.4
0.4
Max
-
0.7
Units
V
V
SWITCHING CHARACTTERISTICS - CS8403A PARALLEL PORT
(T
A
= 25 掳C;
VD+ = 5V, Inputs: Logic0 = GND, Logic1 = VD+, C
L
= 20 pF)
Parameters
ADDRESS valid to CS low
CS high to ADDRESS invalid
RD/WR valid to CS low
CS low to RD/WR invalid
CS low
DATA valid to CS rising
CS high to DATA invalid
CS falling to DATA valid
CS rising to DATA Hi-Z
A4 - A0
Symbol
t
adcss
t
csadh
t
rwcss
t
csrwi
t
csl
Min
13.5
0
10
35
35
32
0
-
5
Typ
-
-
-
-
-
-
-
-
-
Max
-
-
-
-
-
-
-
35
-
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
RD/WR low (writing)
RD/WR low (writing)
RD/WR high (reading)
RD/WR high (reading)
t
dcssw
t
csdhw
t
csddr
t
csdhr
t adcss
CS
t
csl
t rwcss
RD/WR
Writing
t csrwi
t csadh
t dcssw
t csdhw
D7 - D0
RD/WR
Reading
D7 - D0
t csddr
t csdhr
CS8403A Parallel Port Timing
4
DS239PP1