Electrical characteristics (continued) – Rainbow Electronics MAX14770E User Manual
Page 3
High-ESD Profibus RS-485 Transceiver
MAX14770E
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V Q10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V, T
A
= +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC INPUTS
Driver Input High
Voltage
V
IH
DE, DI, RE
2.0
V
Driver Input Low
Voltage
V
IL
DE, DI, RE
0.8
V
Driver Input
Hysteresis
V
HYS
DE, DI, RE
50
mV
Driver Input Current
I
IN
DE, DI, RE
-1
+1
F
A
Input Impedance in
Hot Swap
R
DE
Figure 11 until the first low-to-high transition of DE
occurs
1
5.6
10
k
W
R
RE
Figure 11 until the first high-to-low transition of RE
occurs
RECEIVER
Input Current (A, B)
I
A,
I
B
DE = GND, V
CC
= GND or
+5.5V
V
IN
= 12V
+250
F
A
V
IN
= -7V
-200
Differential Input
Capacitance
C
AB
Between A and B, DE = RE = GND at 6MHz
8
pF
Receiver Differential
Threshold Voltage
V
TH
-7V P V
CM
P 12V
-200
-125
-50
mV
Receiver Input
Hysteresis
D
V
TH
V
CM
= 0V
15
mV
LOGIC OUTPUT
Output High Voltage
V
OH
I
OUT
= -1mA, V
A
- V
B
= V
TH
V
CC
-
1.5
V
Output Low Voltage
V
OL
I
OUT
= 1mA, V
A
- V
B
= -V
TH
0.4
V
Three-State Receiver
Output Current
I
OZR
0V P V
OUT
P V
CC
-1
+1
F
A
Receiver Input
Resistance
R
IN
-7V P V
CM
P 12V
48
kI
Receiver Output
Short-Circuit Current
I
OSR
0V P V
RO
P V
CC
-110
+110
mA
PROTECTION SPECIFICATIONS
Thermal-Shutdown
Threshold
V
TS
+160
N
C
Thermal-Shutdown
Hysteresis
V
TSH
15
N
C
ESD Protection, A
and B Pins
HBM
±35
kV
IEC 61000-4-2 Air-Gap Discharge to GND
±20
IEC 61000-4-2 Contact Discharge to GND
±10
ESD Protection, All
Other Pins
HBM
±2
kV