ST485A STMicroelectronics, ST485A Datasheet - Page 8

• Manufacturer Part Number: ST485A
• Description: Very high speed low power RS-485/RS-422 transceiver
• Manufacturer: STMicroelectronics

Electrical characteristics
4.5
Table 10.
Note:
8/19
Symbol
t
RPDS
t
t
t
t
t
t
PZH
PHZ
PLH
PHL
PZL
PLZ
1
2
3
Propagation Delay
|t
Output enable time
Output enable time
Output disable time
Output disable time
PLH -
Receiver switching
(V
referred to T
Driver switching characteristics
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
CC
t
f
PHL
= 4.5V to 5.5V, T
| Propagation delay skew C
6ms.
Parameter
A
= 25°C, V
A
CC
= -40 to 85°C, unless otherwise specified. Typical values are
= 5V) (See
C
C
C
C
C
L
L
RL
RL
RL
RL
= 15pF
= 15pF
= 15pF, S1 Closed
= 15pF, S2 Closed
= 15pF, S2 Closed
= 15pF, S1 Closed
Note:
Test conditions
1, 3)
Min
Typ
0.5
18
7
7
7
7
Max
30
12
12
12
12
2
ST485A
Unit
ns
ns
ns
ns
ns
ns