Rainbow Electronics MAX3430 User Manual
Page 2
MAX3430
±80V Fault-Protected, Fail-Safe,
1/4-Unit Load, +3.3V RS-485 Transceiver
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +3.3V ±10%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(All voltages are referenced to GND.)
V
CC
........................................................................................+5V
RE, DE, DI...................................................-0.3V to (V
CC
+ 0.3V)
Driver Output Voltage (A, B) (Note 1) ..................................±80V
Receiver Input Voltage (A, B) (Note 1) ................................±80V
RO ..............................................................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW
Operating Temperature Ranges
MAX3430C_ _ .....................................................0°C to +70°C
MAX3430E_ _ ..................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: A, B must be terminated with 54
Ω or 100Ω to guarantee ±80V fault protection.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DRIVER
Figure 1, R
L
= 100
Ω
2.0
V
CC
Differential Driver Output
V
OD
Figure 1, R
L
= 54
Ω
1.5
V
CC
V
Change in Magnitude of
Differential Output Voltage
∆V
OD
Figure 1, R
L
= 100
Ω or 54Ω (Note 2)
0.2
V
Driver Common-Mode Output
Voltage
V
OC
Figure 1, R
L
= 100
Ω or 54Ω
V
CC
/ 2
3
V
Change in Magnitude of
Common-Mode Voltage
∆V
OC
Figure 1, R
L
= 100
Ω or 54Ω (Note 2)
0.2
V
DRIVER LOGIC
Driver Input High Voltage
V
IH
DI
2.0
V
Driver Input Low Voltage
V
IL
DI
0.8
V
Driver Input Current
I
IN
DI
±1
µA
0
≤ V
OUT
≤ 12V (Note 3)
+250
Driver Short-Circuit Output
Current
I
OSD
-7V
≤ V
OUT
≤ V
CC
(Note 3)
-250
mA
(V
CC
- 1V)
≤ V
OUT
≤ 12V (Note 3)
+10
Driver Short-Circuit Foldback
Output Current
I
OSDF
-7V
≤ V
OUT
≤ 1V (Note 3)
-10
mA
RECEIVER
DE = GND, RE = GND, V
IN
= +12V
250
DE = GND, RE = GND, V
IN
= -7V
-200
µA
Input Current (A, B)
I
A, B
V
IN
= -80V to +80V
-6
+6
mA
Receiver Differential Threshold
Voltage
V
TH
-7V
≤ V
CM
≤ 12V
-200
-50
mV
Receiver Input Hysteresis
∆V
TH
V
A
+ V
B
= 0
25
mV