SN65HVD72
SN65HVD75
SN65HVD78
SLLSE11B –MARCH 2012–REVISED JUNE 2012
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ELECTRICAL CHARACTERISTICS
over recommended operating range (unless otherwise specified)
PARAMETER
TEST CONDITIONS
MIN
1.5
1.5
2
TYP
2
MAX UNIT
RL = 60 Ω, 375 Ω on each output to See
V
V
V
-7 V to 12 V
Figure 1
Driver differential output voltage
magnitude
|VOD
|
RL = 54 Ω (RS-485)
RL = 100 Ω (RS-422) TJ ≥ 0°C,
2
2.5
VCC ≥ 3.2V
Change in magnitude of driver
differential output voltage
Δ|VOD
|
RL = 54 Ω, CL = 50 pF
–50
1
0
VCC/2
0
50
3
mV
V
See
Figure 2
Steady-state common-mode output
voltage
VOC(SS)
Change in differential driver output
common-mode voltage
ΔVOC
Center of two 27-Ω load resistors
–50
50
mV
Peak-to-peak driver common-mode
output voltage
VOC(PP)
COD
200
15
mV
pF
Differential output capacitance
Positive-going receiver differential
input voltage threshold
(1)
VIT+
See
–70
–20
mV
Negative-going receiver differential
input voltage threshold
(1)
VIT–
–200
50
–150 See
80
mV
mV
Receiver differential input voltage
VHYS
threshold hysteresis (VIT+ – VIT–
)
VOH
VOL
Receiver high-level output voltage
Receiver low-level output voltage
IOH = –8 mA
IOL = 8 mA
2.4 VCC–0.3
V
V
0.2
0.4
2
Driver input, driver enable, and
receiver enable input current
II
–2
µA
µA
Receiver output high-impedance
current
IOZ
IOS
VO = 0 V or VCC, RE at VCC
–1
1
Driver short-circuit output current
–160
160
150
mA
µA
µA
µA
µA
VI = 12 V
VI = –7 V
VI = 12 V
VI = –7 V
75
–40
HVD72, 75
–100
–267
VCC = 3 to 3.6 V or
VCC = 0 V, DE at 0 V
II
Bus input current (disabled driver)
240
333
HVD78
–180
Driver and Receiver
enabled
DE=VCC, RE=GND, No
load
750
300
600
0.1
950
500
800
2
µA
µA
µA
µA
Driver enabled,
receiver disabled
DE=VCC, RE=VCC, No
load
ICC
Supply current (quiescent)
Supply current (dynamic)
Driver disabled,
receiver enabled
DE=GND, RE=GND, No
load
Driver and receiver
disabled
DE=GND, D=open
RE=VCC, No load
See the TYPICAL CHARACTERISTICS section
(1) Under any specific conditions, VIT+ is assured to be at least VHYS higher than VIT-
.
4
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