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SN65HVD1787DR Datasheet(PDF) 4 Page - Texas Instruments

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Part # SN65HVD1787DR
Description  Fault-Protected RS-485 Transceivers With Extended Common-Mode Range
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN65HVD1787DR Datasheet(HTML) 4 Page - Texas Instruments

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SN65HVD1785, SN65HVD1786
SN65HVD1787, SN65HVD1791
SN65HVD1792, SN65HVD1793
SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010
www.ti.com
ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RS-485 with
TA ≤ 85°C
1.5
common-mode load,
VCC > 4.75 V, see
TA ≤ 105°C
1.4
|VOD|
Driver differential output voltage magnitude
V
Figure 1
RL = 54 Ω, 4.75 V ≤ VCC ≤ 5.25 V
1.5
2
RL = 100 Ω, 4.75 V ≤ VCC ≤ 5.25 V
2
2.5
Change in magnitude of driver differential output
Δ|VOD|
RL = 54 Ω
–0.2
0
0.2
V
voltage
VOC(SS) Steady-state common-mode output voltage
1
VCC/2
3
V
Change in differential driver output
ΔVOC
–100
0
100
mV
common-mode voltage
Peak-to-peak driver common-mode output
Center of two 27-
Ω load resistors, See
VOC(PP)
500
mV
voltage
Figure 2
COD
Differential output capacitance
23
pF
Positive-going receiver differential input voltage
VIT+
–100
–10
mV
threshold
Negative-going receiver differential input
VIT–
VCM = –20 V to 25 V
–200
–150
mV
voltage threshold
Receiver differential input voltage threshold
VHYS
30
50
mV
hysteresis (VIT+ – VIT–)
VCC
IOH = –8 mA
2.4
– 0.3
VOH
Receiver high-level output voltage
V
IOH = –400 mA
4
TA ≤ 85°C
0.2
0.4
VOL
Receiver low-level output voltage
IOL = 8 mA
V
TA ≤ 105°C
0.2
0.5
Driver input, driver enable, and receiver enable
II
–100
100
mA
input current
IOZ
Receiver output high-impedance current
VO = 0 V or VCC, RE at VCC
–1
1
mA
IOS
Driver short-circuit output current
–250
250
mA
VI = 12 V
75
125
85, 86,
91, 92
VI = –7 V
–100
–40
VCC = 4.5 to 5.5 V or
II
Bus input current (disabled driver)
mA
VCC = 0 V, DE at 0 V
VI = 12 V
500
87, 93
VI = –7 V
–400
DE = VCC,
Driver and receiver
RE = GND,
4
6
enabled
no load
DE = VCC,
Driver enabled,
RE = VCC,
3
5
mA
receiver disabled
no load
ICC
Supply current (quiescent)
DE = GND,
Driver disabled,
RE = GND,
2
4
receiver enabled
no load
DE = GND,
Driver and receiver
D = open
0.5
5
mA
disabled
RE = VCC,
no load
Supply current (dynamic)
See TYPICAL CHARACTERISTICS section
4
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Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Link(s): SN65HVD1785, SN65HVD1786 SN65HVD1787, SN65HVD1791 SN65HVD1792, SN65HVD1793


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