Datasheet

3Maxim Integrated
+5.0V, ±30kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceiver
MAX14780E
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5.0V ±10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5.0V and T
A
= +25NC.) (Note 1)
DRIVER SWITCHING CHARACTERISTICS WITH INTERNAL SRL (500kbps)
(V
CC
= +5.0V ±10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5.0V and T
A
= +25NC.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RO Output-High Voltage V
OH
I
O
= -1mA
V
CC
-
0.6
V
RO Output-Low Voltage V
OL
I
O
= 1mA 0.4 V
Three-State Output Current at
Receiver
I
OZR
0 P V
O
P V
CC
P 1 FA
Receiver Input Resistance R
IN
-7V P V
CM
P +12V
96
kI
Receiver Output Short-Circuit
Current
I
OSR
0V P V
RO
P V
CC
P 110
mA
SUPPLY CURRENT
Supply Current I
CC
No load, V
RE
= 0V, DE = V
CC
1.2 1.8
mA
No load, RE = V
CC
, DE = V
CC
1.2 1.8
No load, V
RE
= 0V, V
DE
= 0V
1.2 1.8
Supply Current in Shutdown
Mode
I
SHDN
RE = V
CC
, V
DE
= 0V
2.8 10
FA
ESD PROTECTION
ESD Protection for A and B
Human Body Model
Q30
kV
Contact Discharge
IEC 61000-4-2
Q12
Air-Gap Discharge
IEC 61000-4-2
Q15
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Driver Propagation Delay
t
DPLH
C
L
= 50pF, R
L
= 54I, Figures 2 and 3
200 1000
ns
t
DPHL
200 1000
Driver Differential Output Rise or
Fall Time
t
R ,
t
F
C
L
= 50pF, R
L
= 54I, Figures 2 and 3
250 900 ns
Differential Driver Output Skew
|t
DPLH
- t
DPHL
|
t
DSKEW
C
L
= 50pF, R
L
= 54I, Figures 2 and 3
140 ns
Maximum Data Rate 500 kbps
Driver Enable to Output High t
DZH
Figure 4 2500 ns
Driver Enable to Output Low t
DZL
Figure 5 2500 ns
Driver Disable Time from Low t
DLZ
Figure 5 100 ns
Driver Disable Time from High t
DHZ
Figure 4 100 ns
Driver Enable from Shutdown to
Output High
t
DZH(SHDN)
Figure 4 5500 ns
Driver Enable from Shutdown to
Output Low
t
DZL(SHDN)
Figure 5 5500 ns
Time to Shutdown t
SHDN
50 340 700 ns