Datasheet

3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 3.3V ±0.3V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at 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.
Supply Voltage (V
CC
)...............................................................7V
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
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW
8-Pin SO (derate 5.88mW/°C above +70°C)..................471mW
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
DE = 0V,
V
CC
= 0V or 3.6V
DE = 0V, RE = V
CC
,
V
CC
= 0V or 3.6V, MAX3491
DE = 0V, RE = 0V,
V
CC
= 0V or 3.6V, MAX3491
kΩ12R
IN
Receiver Input Resistance
µA±1I
OZR
Three-State (High Impedance)
Output Current at Receiver
V0.4V
OL
Receiver Output Low Voltage
VV
CC
- 0.4V
OH
Receiver Output High Voltage
mV50∆V
TH
Receiver Input Hysteresis
V-0.2 0.2V
TH
Receiver Differential
Threshold Voltage
µA
-1
I
O
Output Leakage (Y, Z)
in Shutdown Mode
1
µA
-20
I
O
Output Leakage (Y, Z)
V0.2∆V
OD
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
(Note 1)
V
1.5
V
OD
2.0
Differential Driver Output
20
mA
-0.8
I
IN2
Input Current (A, B)
1.0
µA±2I
IN1
Logic Input Current
V3V
OC
Driver Common-Mode Output
Voltage
V0.2∆V
OC
Change in Magnitude of
Common-Mode Output Voltage
(Note 1)
V2.0V
IH
Input High Voltage
V0.8V
IL
Input Low Voltage
UNITSMIN TYP MAXSYMBOLPARAMETER
R
L
= 54Ω or 100Ω, Figure 4
-7V ≤ V
CM
≤ 12V
R
L
= 54Ω (RS-485), Figure 4
V
CC
= 3.6V, 0V ≤ V
OUT
≤ V
CC
R
L
= 100Ω (RS-422), Figure 4
I
OUT
= 2.5mA, V
ID
= 200mV, Figure 6
I
OUT
= -1.5mA, V
ID
= 200mV, Figure 6
V
CM
= 0V
V
OUT
= 12V
V
IN
= -7V
-7V ≤ V
CM
≤ 12V
V
OUT
= -7V
V
IN
= 12V
DE, DI, RE
R
L
= 54Ω or 100Ω, Figure 4
R
L
= 54Ω or 100Ω, Figure 4
DE, DI, RE
V
OUT
= 12V
DE, DI, RE
V
OUT
= -7V
CONDITIONS
R
L
= 60Ω (RS-485), V
CC
= 3.3V, Figure 5
1.5
MAX3483/MAX3485/MAX3486/
MAX3488/MAX3490/MAX3491
2
Maxim Integrated