Complete, Isolated RS-485/RS-422
Data Interface
MAX1480A/B/C, MAX1490A/B
_____________________________Typical Operating Characteristics (continued)
(V
CC_
= 5V, FS = V
CC_
, DE
´
= V
CC_
, V
DI
´
= 0V to 5V at 1.25MHz, T
A
= +25°C, unless otherwise noted.)
MAX1480A/MAX1490A
RECEIVER t
PHL
MAX1480/90-21
MAX1480A/MAX1490A
RECEIVER t
PLH
MAX1480/90-22
RECEIVER
INPUT A
1V/div
RECEIVER
INPUT B
1V/div
RECEIVER
INPUT B
1V/div
RO
2V/div
RECEIVER
INPUT A
1V/div
RO
2V/div
20ns/div
V
CC_
= 5.0V, DE
´
= V
CC_
DI
´
= 0V TO 5V AT 1.25MHz
20ns/div
V
CC_
= 5.0V, DE
´
= V
CC_
DI
´
= 0V TO 5V AT 1.25MHz
MAX1480B/MAX1480C/MAX1490B
RECEIVER t
PHL
MAX1480/90-23
MAX1480B/MAX1480C/MAX1490B
RECEIVER t
PLH
MAX1480/90-24
RECEIVER
INPUT A
1V/div
RECEIVER
INPUT B
1V/div
RECEIVER
INPUT A
1V/div
RECEIVER
INPUT B
1V/div
RO
2V/div
200ns/div
V
CC_
= 5.0V, DE
´
= V
CC_
DI
´
= 0V TO 5V AT 125kHz
V
CC_
= 5.0V, DE
´
= V
CC_
DI
´
= 0V TO 5V AT 125kHz
RO
2V/div
500ns/div
POWER-UP DELAY TO DRIVER OUTPUTS VALID
MAX1480/90-16
DRIVER
OUTPUT B
(Z FOR MAX1490)
2V/div
SD
2V/div
1µs/div
V
DI´
= 0V
V
SD
= 5V TO 0V AT 1kHz
_______________________________________________________________________________________
9
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
