UTRS485 Datasheet, PDF (4/8 Pages) Unisonic Technologies – FAIL-SAFE, 2.5MBPS RS-485 TRANSCEIVERS

UTRS485
Preliminary
CMOS IC
 ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
V_CC
12
V
Control Input Voltage ( RE , DE)
-0.5~(V_CC+0.5)
V
Driver Input Voltage (DI)
DI
-0.5~(V_CC+0.5)
V
Driver Output Voltage (A, B)
-8~+12.5
V
Receiver Input Voltage (A, B)
-8~+12.5
V
Receiver Output Voltage (RO)
Continuous Power Dissipation
(T_A=+70°C)
Derate 5.88mW/°C above +70°C
-0.5~(V_CC+0.5)
V
471
mW
Lead Temperature (Soldering, 10sec)
Operating Temperature Ranges
T_L
+300
°C
T_OPR
-40~+85
°C
Storage Temperature Range
T_STG
-65~+160
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
 DC ELECTRICAL CHARACTERISTICS
(V_CC=5.0V ±5%, T_A=T_MIN to T_MAX, unless otherwise noted. (Note 1, 2)
PARAMETER
SYMBOL
TEST CONDITIONS
Differential Driver Output
(No Load)
V_OD1
Differential Driver Output
(with Load)
V_OD2
R=50Ω (RS-422)
Fig.1, R=27Ω (RS-485)
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
∆V_OD Fig.1, R=27Ω or 50Ω
Driver Common-Mode Output
Voltage
V_OC Fig.1, R=27Ω or 50Ω
Change in Magnitude of Driver
Common-Mode Output Voltage
for Complementary Output
States
∆V_OD Fig.1, R=27Ω or 50Ω
Input High Voltage
V_{IH1 DE, DI, RE}
Input Low Voltage
V_{IL1 DE, DI, RE}
Input Current
Input Current (A, B)
Receiver Differential Threshold
Voltage
I_{IN1 DE, DI, RE}
I_IN2
DE=0V;
V_CC=0V or 5.25V
V_TH -7V≤V_CM≤+12V
V_IN=12V
V_IN=-7V
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State (High Impedance)
Output Current at Receiver
∆V_TH
V_OH
V_OL
I_OZR
V_CM=0V
I_O=-4mA, V_ID=200mV
I_O=4mA, V_ID=-200mV
0.4V≤V_O≤ 2.4V
Receiver Input Resistance
No-Load Supply Current
(Note 3)
R_IN -7V≤V_CM≤+12V
I_{CC RE =0V or VCC}
DE=V_CC
DE=0V
Driver Short-Circuit Current,
V_O=High
Driver Short-Circuit Current,
V_O=Low
Receiver Short-Circuit Current
I_OSD1 -7V≤V_O≤12V (Note 4)
I_OSD2
I_OSR
-7V≤V_O≤12V (Note 4)
0V≤V_O≤V_CC
MIN TYP MAX UNIT
5.0 V
2.0
V
1.5
5
V
0.2 V
3.0 V
0.2 V
2.0
V
0.8 V
±2.0 µA
1.0 mA
-0.8 mA
-0.2
0.2 V
70
mV
3.5
V
0.5 V
±1.0 µA
12
kΩ
500 900 µA
300 500 µA
35
250 mA
35
250 mA
7
95 mA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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