3 .3 V-P o w e re d , 1 0 Mb p s a n d S le w -Ra t e -Lim it e d
Tru e RS -4 8 5 /RS -4 2 2 Tra n s c e ive rs
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V )...............................................................7V
14-Pin Plastic DIP (derate 10mW/°C above +70°C) ......800mW
14-Pin SO (derate 8.33mW/°C above +70°C)................667mW
Operating Temperature Ranges
MAX34_ _C_ _.......................................................0°C to +70°C
MAX34_ _E_ _....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
CC
Control Input Voltage (RE, DE) ...................................-0.3V to 7V
Driver Input Voltage (DI).............................................-0.3V to 7V
Driver Output Voltage (A, B, Y, Z)..........................-7.5V to 12.5V
Receiver Input Voltage (A, B) ................................-7.5V to 12.5V
Receiver Output Voltage (RO)....................-0.3V to (V + 0.3V)
CC
Continuous Power Dissipation (T = +70°C)
A
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW
8-Pin SO (derate 5.88mW/°C above +70°C)..................471mW
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.
DC ELECTRICAL CHARACTERISTICS
(V = 3.3V ±0.3V, T = T
to T , unless otherwise noted. Typical values are at T = +25°C)
MAX A
CC
A
MIN
PARAMETER
SYMBOL
CONDITIONS
= 100Ω (RS-422), Figure 4
= 54Ω (RS-485), Figure 4
MIN
2.0
1.5
1.5
TYP
MAX
UNITS
R
R
R
L
L
L
Differential Driver Output
V
OD
V
= 60Ω (RS-485), V = 3.3V, Figure 5
CC
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
(Note 1)
∆V
R
= 54Ω or 100Ω, Figure 4
0.2
V
OD
L
Driver Common-Mode Output
Voltage
V
R
R
= 54Ω or 100Ω, Figure 4
= 54Ω or 100Ω, Figure 4
3
V
V
OC
L
L
Change in Magnitude of
Common-Mode Output Voltage
(Note 1)
∆V
0.2
OC
Input High Voltage
Input Low Voltage
Logic Input Current
V
DE, DI, RE
DE, DI, RE
DE, DI, RE
2.0
V
V
IH
V
IL
0.8
±2
1.0
-0.8
20
I
IN1
µA
V
= 12V
= -7V
IN
DE = 0V,
Input Current (A, B)
I
IN2
mA
µA
µA
V
V
CC
= 0V or 3.6V
V
IN
V
OUT
= 12V
DE = 0V, RE = 0V,
= 0V or 3.6V, MAX3491
Output Leakage (Y, Z)
I
O
V
CC
V
OUT
= -7V
= 12V
= -7V
-20
1
V
OUT
Output Leakage (Y, Z)
in Shutdown Mode
DE = 0V, RE = V
,
CC
I
O
V
CC
= 0V or 3.6V, MAX3491
V
OUT
-1
Receiver Differential
Threshold Voltage
V
TH
-7V ≤ V ≤ 12V
-0.2
0.2
CM
Receiver Input Hysteresis
∆V
V
= 0V
50
mV
V
TH
CM
Receiver Output High Voltage
Receiver Output Low Voltage
V
OH
I
= -1.5mA, V = 200mV, Figure 6
V
CC
- 0.4
OUT
ID
V
OL
I
= 2.5mA, V = 200mV, Figure 6
0.4
±1
V
OUT
ID
Three-State (High Impedance)
Output Current at Receiver
I
V
CC
= 3.6V, 0V ≤ V
≤ V
CC
µA
OZR
OUT
Receiver Input Resistance
R
-7V ≤ V ≤ 12V
12
kΩ
IN
CM
5680/MAX3491
2
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
