st485ab STMicroelectronics, st485ab Datasheet - Page 8

• Manufacturer Part Number: st485ab
• Description: Very High Speed Low Power Rs-485/rs-422 Transceiver
• Manufacturer: STMicroelectronics

Table 11.
Note:
8/19
Symbol
t
RPDS
t
t
t
t
t
t
PLH
PHL
PZH
PHZ
PZL
PLZ
1
2
3
Propagation Delay
|t
Output enable time
Output enable time
Output disable time
Output disable time
PLH -
Driver switching characteristics (V
specified. Typical values are referred to T
All currents into device pins are positive; all currents out of device pins are negative; all
voltages are referenced to device ground unless specified.
Applies to peak current. See typical Operating Characteristics.
t
r
=t
t
f
PHL
≤ 6 ms.
| Propagation delay skew C
Parameter
C
C
C
C
C
L
L
RL
RL
RL
RL
= 15 pF
= 15 pF
= 15 pF, S1 Closed
= 15 pF, S2 Closed
= 15 pF, S2 Closed
= 15 pF, S1 Closed
CC
Test conditions
= 4.5V to 5.5V, T
A
= 25°C, V
CC
= 5V) (See
A
= -40 to 85°C, unless otherwise
Min.
Note:
Typ.
0.5
18
1,
7
7
7
7
Note
Max.
30
12
12
12
12
2
3)
Unit
ns
ns
ns
ns
ns
ns