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DS36C280 Datasheet(PDF) 3 Page - Texas Instruments

Part # DS36C280
Description  DS36C280 Slew Rate Controlled CMOS EIA-RS-485 Transceiver
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

DS36C280 Datasheet(HTML) 3 Page - Texas Instruments

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DS36C280
www.ti.com
SNLS097C – JULY 2000 – REVISED FEBRUARY 2013
Electrical Characteristics
(1) (2)
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified
Symbol
Parameter
Conditions
Reference
Min
Typ
Max
Units
DIFFERENTIAL DRIVER CHARACTERISTICS
VOD1
Differential Output Voltage
IO = 0 mA (No Load)
1.5
5.0
V
(422)
VOD0
Output Voltage
IO = 0 mA
0
5.0
V
(485)
VOD0*
Output Voltage
(Output to GND)
0
5.0
V
VOD2
Differential Output Voltage
RL = 50Ω
(422)
Figure 2
2.0
2.8
V
(Termination Load)
RL = 27Ω
(485)
1.5
2.3
5.0
V
ΔVOD2
Balance of VOD2
RL = 27Ω or 50Ω
(3)
−0.2
0.1
+0.2
V
|VOD2 − VOD2*|
(422, 485)
VOD3
Differential Output Voltage
R1 = 54
Ω, R2 = 375Ω
Figure 3
1.5
2.0
5.0
V
(Full Load)
VTEST = −7V to +12V
VOC
Driver Common Mode
RL = 27Ω
(485)
Figure 2
0
3.0
V
Output Voltage
RL = 50Ω
(422)
0
3.0
V
ΔVOC
Balance of VOC
RL = 27Ω or
(3)
−0.2
+0.2
V
|VOC − VOC*|
RL = 50Ω
(422, 485)
IOSD
Driver Output Short-Circuit
VO = +12V
(485)
200
+250
mA
Current
VO = −7V
(485)
−190
−250
mA
RECEIVER CHARACTERISTICS
VTH
Differential Input High
VO = VOH, IO = −0.4 mA
+0.035
+0.2
V
Threshold Voltage
−7V ≤ VCM ≤ +12V
(4)
(422, 485)
VTL
Differential Input Low
VO = VOL, IO = 0.4 mA
−0.2
−0.035
V
Threshold Voltage
−7V ≤ VCM ≤ +12V
VHST
Hysteresis(5)
VCM = 0V
70
mV
RIN
Input Resistance
−7V ≤ VCM ≤ +12V
DS36C280T
24
68
k
Ω
RIN
Input Resistance
−7V ≤ VCM ≤ +12V
DS36C280
48
68
k
Ω
IIN
Line Input Current
Other Input = 0V
DS36C280
VIN = +12V
0
0.19
0.25
mA
(6)
DE = VIL, RE* = VIL
VIN = −7V
0
−0.1
−0.2
mA
VCC = 4.75 to 5.25
DS36C280T
VIN = +12V
0
0.19
0.5
mA
or 0V
VIN = −7V
0
−0.1
−0.4
mA
IING
Line Input Current
Other Input = 0V
DS36C280
VIN = +12V
0
0.19
0.25
mA
Glitch (6)
DE = VIL, RE* = VIL
VIN = −7V
0
−0.1
−0.2
mA
VCC = +3.0V
DS36C280T
VIN = +12V
0
0.19
0.5
mA
or 0V TA = 25°C
VIN = −7V
0
−0.1
−0.4
mA
IB
Input Balance Test
RS = 500
Ω
(422) (7)
±400
mV
VOH
High Level Output Voltage
IOH = −4 mA, VID = +0.2V
RO
3.5
4.6
V
Figure 12
VOL
Low Level Output Voltage
IOL = +4 mA, VID = −0.2V
0.3
0.5
V
IOSR
Short Circuit Current
VO = GND
RO
7
35
85
mA
IOZR
TRI-STATE Leakage Current
VO = 0.4V to 2.4V
±1
μA
DEVICE CHARACTERISTICS
(1)
Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground
except VOD1 and VOD2.
(2)
All typicals are given for: VCC = +5.0V, TA = + 25°C.
(3)
Delta |VOD2| and Delta |VOC| are changes in magnitude of VOD2 and VOC, respectively, that occur when input changes state.
(4)
Threshold parameter limits specified as an algebraic value rather than by magnitude.
(5)
Hysteresis defined as VHST = VTH − VTL.
(6)
IIN includes the receiver input current and driver TRI-STATE leakage current.
(7)
For complete details of test, see RS-485.
Copyright © 2000–2013, Texas Instruments Incorporated
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