DS36C279_14 Datasheet, PDF (3/18 Pages) Texas Instruments – DS36C279 Low Power EIA-RS-485 Transceiver with Sleep Mode

DS36C279
www.ti.com
SNLS098B – JULY 2000 – REVISED APRIL 2013
ELECTRICAL CHARACTERISTICS⁽¹⁾⁽²⁾
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified
Symbol
Parameter
Conditions
Reference
Min Typ
Max Unit
s
DIFFERENTIAL DRIVER CHARACTERISTICS
V_OD1
V_OD0
V_OD0*
V_OD2
Differential Output Voltage
Output Voltage
Output Voltage
Differential Output Voltage
(Termination Load)
ΔV_OD2
V_OD3
V_OC
Balance of V_OD2
|V_OD2 − V_OD2*|
Differential Output Voltage
(Full Load)
Driver Common Mode
Output Voltage
ΔV_OC
I_OSD
Balance of V_OC
|V_OC − V_OC*|
Driver Output Short-Circuit
Current
RECEIVER CHARACTERISTICS
I_O = 0 mA (No Load)
I_O = 0 mA
(Output to GND)
R_L = 50Ω
R_L = 27Ω
R_L = 27Ω or 50Ω
R1 = 54Ω, R2 = 375Ω
V_TEST = −7V to +12V
R_L = 27Ω
R_L = 50Ω
R_L = 27Ω or
R_L = 50Ω
V_O = +12V
V_O = −7V
(422)
1.5
(485)
0
0
(422) See
2.0 2.8
(485) ^{Figure 2}
1.5
2.3
See⁽³⁾ (422, 485) −0.2 0.1
5.0 V
5.0 V
5.0 V
V
5.0 V
+0.2 V
See Figure 3
1.5 2.0
5.0 V
(485) See
(422) ^{Figure 2}
See ⁽³⁾
(422, 485)
(485) See Figure 5
(485)
0
0
−0.2
200
−190
3.0 V
3.0 V
+0.2 V
+250 mA
−250 mA
V_TH
V_TL
V_HST
R_IN
Differential Input High
Threshold Voltage
Differential Input Low
Threshold Voltage
Hysteresis
Input Resistance
V_O = V_OH, I_O = −0.4 mA
−7V ≤ V_CM ≤ +12V
V_O = V_OL, I_O = 0.4 mA
−7V ≤ V_CM ≤ +12V
V_CM = 0V
−7V ≤ V_CM ≤ +12V
DS36C279T
DS36C279
See ⁽⁴⁾
(422, 485)
See ⁽⁵⁾
+0.035 +0.2 V
−0.2 −0.035
V
70
mV
24
68
kΩ
48
68
kΩ
I_IN
Line Input Current
See ⁽⁶⁾
Other Input = 0V,
DE = V_IL, RE* = V_IL,
V_CC = 4.75 to 5.25
or 0V
DS36C279
DS36C279T
V_IN = +12V
V_IN = −7V
V_IN = +12V
0 0.19 0.25 mA
0 −0.1 −0.2 mA
0 0.19 0.5 mA
V_IN = −7V
0 −0.1 −0.4 mA
I_ING
Line Input Current Glitch
See ⁽⁶⁾
Other Input = 0V,
DE = V_IL, RE* = V_IL,
DS36C279
V_IN = +12V
V_IN = −7V
0 0.19 0.25 mA
0 −0.1 −0.2 mA
I_B
Input Balance Test
V_CC = +3.0V or 0V,
T_A = 25°C
RS = 500Ω
DS36C279T
V_IN = +12V
V_IN = −7V
(422) See⁽⁷⁾
0 0.19 0.5 mA
0 −0.1 −0.4 mA
±400 mV
V_OH
High Level Output Voltage
I_OH = −4 mA, V_ID = +0.2V
V_OL
Low Level Output Voltage
I_OL = +4 mA, V_ID = −0.2V
RO
3.5 4.6
See Figure 12
0.3
V
0.5 V
I_OSR
Short Circuit Current
V_O = GND
RO
7
35
85 mA
I_OZR
TRI-STATE Leakage Current V_O = 0.4V to 2.4V
±1 μA
(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 V_OD1 and V_OD2.
(2) All typicals are given for: V_CC = +5.0V, T_A = + 25°C.
(3) Delta |V_OD2| and Delta |V _OC| are changes in magnitude of V_OD2 and V_OC , respectively, that occur when input changes state.
(4) Threshold parameter limits specified as an algebraic value rather than by magnitude.
(5) Hysteresis defined as V_HST = V_TH − V_TL.
(6) I_IN includes the receiver input current and driver TRI-STATE leakage current.
(7) For complete details of test, see RS-485.
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