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SN65HVD37DR Datasheet(PDF) 3 Page - Texas Instruments

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Part # SN65HVD37DR
Description  Low-Power 3.3V-Supply Full-Duplex RS-485 Driver/Receiver
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

SN65HVD37DR Datasheet(HTML) 3 Page - Texas Instruments

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SN65HVD37
www.ti.com
SLLSE92 A
– OCTOBER 2011 – REVISED NOVEMBER 2011
ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
See Figure 1, RL= 60 Ω, VCC ≥ 3.15 V,
1.5
1.9
V
375
Ω on each output to –7 V to 12 V
Driver differential output voltage
|VOD|
RL = 54 Ω (RS-485)
1.5
2
V
magnitude
See Figure 3
RL = 100 Ω (RS-422),
2
2.2
V
TJ ≥ 25°C, VCC ≥ 3.3 V
Change in magnitude of driver differential
Δ|VOD|
RL = 54 Ω, CL = 50 pF
–0.1
0
0.1
V
output voltage
Steady-state common-mode output
VOC(SS)
1.5 VCC /2
2.5
V
voltage
Change in differential driver output
Center of two 27-
Ω load
ΔVOC
See Figure 3
–0.1
0
0.1
V
common-mode voltage
resistors, CL = 50 pF
Peak-to-peak driver common-mode
VOC(PP)
400
mV
output voltage
CID
Differential input capacitance
A, B
3
pF
COD
Differential output capacitance
Y, Z
14
pF
Positive-going receiver differential input
See
VIT+
–60
–20
mV
voltage threshold
(1)
Negative-going receiver differential input
See
VIT–
–200
–120
mV
voltage threshold
(1)
Receiver differential input voltage
VHYS
30
60
mV
threshold hysteresis (VIT+ – VIT–)
VCC-
VOH
Receiver high-level output voltage
IOH = –8 mA
2.4
V
0.3
VOL
Receiver low-level output voltage
IOL = 8 mA
0.2
0.4
V
Driver input, driver enable, and receiver
II
–2
2
μA
enable input current
IOZ
Receiver output high-impedance current
VO = 0 V or VCC, RE at VCC
–1
1
μA
IOS
Driver short-circuit output current
–250
250
mA
VI = 12 V
75
125
VCC = 3 to 3.6 V or
II
Bus input current (disabled driver)
μA
VCC =0 V, DE at 0 V
VI = –7 V
–100
–40
Driver and Receiver enabled
DE = VCC, RE = GND
720
850
μA
Driver enabled, receiver
DE = VCC, RE = VCC
400
μA
disabled
Supply current, steady-state, no load
ICC
Driver disabled, receiver
(quiescent)
DE = GND, RE = GND
800
μA
enabled
Driver and receiver disabled
DE = GND, D = open,
0.2
1
μA
(standby)
RE = VCC
Supply current (dynamic)
See
“TYPICAL CHARACTERISTICS” section
(1)
Under any specific conditions, VIT+ is assured to be at least VHYS higher than VIT–.
Copyright
© 2011, Texas Instruments Incorporated
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