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UTRS485 데이터시트 PDF




Unisonic Technologies에서 제조한 전자 부품 UTRS485은 전자 산업 및 응용 분야에서
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부품번호 UTRS485 기능
기능 RS-485 / RS-422 TRANSCEIVERS
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UTRS485 데이터시트, 핀배열, 회로
UNISONIC TECHNOLOGIES CO., LTD
UTRS485
Preliminary
FAIL-SAFE, 2.5MBPS, RS-485 /
RS-422 TRANSCEIVERS WITH
±15KV ESD-PROTECTED
CMOS IC
DESCRIPTION
The UTC UTRS485 is a half-duplex transceiver designed for
RS-485 data bus network, which contains one transmitter and one
receiver. The UTC UTRS485 features a fail-safe receiver, which
guarantees the receiver to output high when the receiver inputs are
open, short or idle.
The UTC UTRS485 also features a hot-swap glitch free protection
circuits which guarantee outputs of both the transmitter and the
receiver in a high impedance state during the power up period. So that
the large short current from power to ground will be disable by glitch
free function, which will save the power and enhance the efficiency of
the power up.
The UTC UTRS485 is optimized for signal rates up to 2.5Mbps
with differential voltage of 2.3V. The UTC UTRS485 also has the
thermal shutdown function when the temperature is over 150and
the protection of the current limitation in the transmitter to protect the
itself from the damage by the system-fault conditions during normal
operation.
SOP-8
FEATURES
* Meet the requirements of the EIA/TIA-485 standards.
* 5.0V single power supply.
* True fail-safe receiver while maintaining EIA/TIA-485 compatibility.
* Hot-Swap glitch free protection on control inputs.
* Up to 256 transceivers on the bus.
* Driver short circuit current limit.
* Thermal shutdown for overload protection.
ORDERING INFORMATION
Ordering Number
UTRS485G-S08-R
Package
SOP-8
Packing
Tape Reel
UTRS485G-S08-R
(1)Packing Type
(2)Package Type
(3)Green Package
(1) R: Tape Reel
(2) S08: SOP-8
(3) G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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UTRS485 pdf, 반도체, 판매, 대치품
UTRS485
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC 12
V
Control Input Voltage ( RE , DE)
-0.5~(VCC+0.5)
V
Driver Input Voltage (DI)
DI -0.5~(VCC+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
(TA=+70°C)
Derate 5.88mW/°C above +70°C
-0.5~(VCC+0.5)
471
V
mW
Lead Temperature (Soldering, 10sec)
Operating Temperature Ranges
TL
TOPR
+300
-40~+85
°C
°C
Storage Temperature Range
TSTG
-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
(VCC=5.0V ±5%, TA=TMIN to TMAX, unless otherwise noted. (Note 1, 2)
PARAMETER
SYMBOL
TEST CONDITIONS
Differential Driver Output
(No Load)
VOD1
Differential Driver Output
(with Load)
VOD2
R=50(RS-422)
Fig.1, R=27(RS-485)
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
VOD Fig.1, R=27or 50
Driver Common-Mode Output
Voltage
VOC Fig.1, R=27or 50
Change in Magnitude of Driver
Common-Mode Output Voltage
for Complementary Output
States
VOD Fig.1, R=27or 50
Input High Voltage
VIH1 DE, DI, RE
Input Low Voltage
VIL1 DE, DI, RE
Input Current
Input Current (A, B)
Receiver Differential Threshold
Voltage
IIN1 DE, DI, RE
IIN2
DE=0V;
VCC=0V or 5.25V
VTH -7VVCM+12V
VIN=12V
VIN=-7V
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State (High Impedance)
Output Current at Receiver
VTH
VOH
VOL
IOZR
VCM=0V
IO=-4mA, VID=200mV
IO=4mA, VID=-200mV
0.4VVO2.4V
Receiver Input Resistance
No-Load Supply Current
(Note 3)
RIN -7VVCM+12V
ICC RE =0V or VCC
DE=VCC
DE=0V
Driver Short-Circuit Current,
VO=High
Driver Short-Circuit Current,
VO=Low
Receiver Short-Circuit Current
IOSD1 -7VVO12V (Note 4)
IOSD2
IOSR
-7VVO12V (Note 4)
0VVOVCC
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 k
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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UTRS485 전자부품, 판매, 대치품
UTRS485
TEST CIRCUIT
Y
R
VOD
R VOC
Z
Fig. 1 Driver DC Test Load
Preliminary
CMOS IC
RECEIVER
OUTPUT
TEST POINT
CRL
15pF
+
1kΩ
S1
S2
1kΩ
Fig. 2 Receiver Timing Test Load
VCC
3V
DE
DI
Y
VID
Z
RDIFF
CL1
CL2
A
B
Fig. 3 Driver/Receiver Timing Test Circuit
RO
RE
OUTPUT
UNDER TEST
CL +
500Ω
S1
S2
Fig. 4 Driver Timing Test Load
VCC
VOH
RO
VOL
A-B VID
-VID
0V
1.5V
Output
1.5V
tPHL
Input
tPLH
0V
Fig. 7 Receiver Propagation Delays
3V
RE
0V
VCC
RO
RO
0V
1.5V
1.5V
tZL(SHDN), tZL
tLZ
1.5V OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
1.5V
tZH(SHDN), tZH
tHZ
VOL+0.5V
VOH-0.5V
Fig. 8 Receiver Enable and Disable Times
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UTRS485

RS-485 / RS-422 TRANSCEIVERS

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