STC485E Datasheet Rev.0.1, Dec.2005
Page of 11
2
STC International Limited http://www.mcu-memory.com
Absolute Maximum Ratings
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
(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1)
Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device ground unless
otherwise noted.
Note 2: VOD and VOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Note 3: Maximum current level applies to peak current just prior to foldback-current limiting; minimum current level applies during
current limiting.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
DRIVER
Differential Driver Output (No Load)
VOD1
Figure 2
5
V
Differential Driver Output
VOD2
R= 50O, Figure 2
1.5
V
Change in Magnitude of Driver Differential
Output Voltage (
Note 2)
? VOD
R= 50O?,Figure 2
0.2
V
Driver Common-Mode Output Voltage
VOC
R= 50O, Figure 2
3
V
Change in Magnitude of Common
-Mode Output Voltage (Note 2)
? VOC
R= 50O, Figure 2
0.2
V
Input High Voltage
VIH
DE, DI, /RE
2.0
V
Input Low Voltage
VIL
DE, DI, /RE
0.8
V
DI Input Hysteresis
VHYS
UM3085E
100
mV
VIN = 12V
1.0
Input Current (A, B)
IIN2
DE = 0V,
VCC = 0V or 5V
VIN = -7V
-0.8
mA
VOUT = -7V
-250
Driver Short-Circuit Output Current
(Note
3)
IOSD
VOUT = 12V
250
mA
RECEIVER
Receiver Differential Threshold Voltage
VTH
-7V=VCM=12V
-0.2
-0.05
V
Receiver Input Hysteresis
? VTH
VCM = 0V
25
mV
Receiver Output High Voltage
VOH
IOUT = -1.5mA, VID = 200mV
VCC –1.5
V
Receiver Output Low Voltage
VOL
IOUT = 2.5mA, VID = 200mV
0.4
V
Three-State (High Impedance)
Output Current at Receiver
IOZR
VCC = 5V, 0V=VOUT\=VCC
±1
µA
Receiver Input Resistance
RIN
-7V=VCM=12V
96
kO?
Receiver Short-Circuit Output Current
IOSR
0V=VRO=VCC
±8
±60
mA
SUPPLY CURRENT
DE = VCC, /RE = 0V
or VCC
0.3
Supply Current
ICC
No load,
DI = 0V or VCC
DE = 0V, /RE = 0V 0.25
mA
Supply Current in Shutdown Mode
ISHDN
DE = 0V, /RE = VCC, DI = VCC or 0V
0.002
10
µA
Human Body Model
±15
ESD Protection for A, B
IEC 1000-4-2 Air Discharge
±15
kV
Supply Voltage (VCC) … … … … … … … … … … … … … … … … … … 7V
Control Input Voltage (/RE, DE) … … … … … … -0.3V to (VCC + 0.3V)
Driver Input Voltage (DI) … … … … … … … … … -0.3V to (VCC + 0.3V)
Driver Output Voltage (A, B) … … … … … … … … … … … -7.5V to 12.5V
Receiver Input Voltage (A, B) … … … … … … … … … … … -7.5V to 12.5V
Receiver Output Voltage (RO) … … … … … … … -0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C… … … … 727mW
8-Pin SO (derate 5.88mW/°C above +70°… … … … … … … … 471mW
Operating Temperature Ranges
STC485EE_ _ … … … … … … … … … … … … … … … … -40°C to +85°C
Storage Temperature Range… … … … … … … … … … -65°C to +160°C
Lead Temperature (soldering, 10sec) … … … … … … … … … … +300°C