Datasheet
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, R
L
= 60 Ω, V
CC
≥ 3.15 V,
1.5 1.9 V
375 Ω on each output to –7 V to 12 V
Driver differential output voltage
|V
OD
| R
L
= 54 Ω (RS-485) 1.5 2 V
magnitude
See Figure 3
R
L
= 100 Ω (RS-422),
2 2.2 V
T
J
≥ 25°C, V
CC
≥ 3.3 V
Change in magnitude of driver differential
Δ|V
OD
| R
L
= 54 Ω, C
L
= 50 pF –0.1 0 0.1 V
output voltage
Steady-state common-mode output
V
OC(SS)
1.5 V
CC
/2 2.5 V
voltage
Change in differential driver output Center of two 27-Ω load
ΔV
OC
See Figure 3 –0.1 0 0.1 V
common-mode voltage resistors, C
L
= 50 pF
Peak-to-peak driver common-mode
V
OC(PP)
400 mV
output voltage
C
ID
Differential input capacitance A, B 3 pF
C
OD
Differential output capacitance Y, Z 14 pF
Positive-going receiver differential input See
V
IT+
–60 –20 mV
voltage threshold
(1)
Negative-going receiver differential input See
V
IT–
–200 –120 mV
voltage threshold
(1)
Receiver differential input voltage
V
HYS
30 60 mV
threshold hysteresis (V
IT+
– V
IT–
)
V
CC
-
V
OH
Receiver high-level output voltage I
OH
= –8 mA 2.4 V
0.3
V
OL
Receiver low-level output voltage I
OL
= 8 mA 0.2 0.4 V
Driver input, driver enable, and receiver
I
I
–2 2 μA
enable input current
I
OZ
Receiver output high-impedance current V
O
= 0 V or V
CC
, RE at V
CC
–1 1 μA
I
OS
Driver short-circuit output current –250 250 mA
V
I
= 12 V 75 125
V
CC
= 3 to 3.6 V or
I
I
Bus input current (disabled driver) μA
V
CC
=0 V, DE at 0 V
V
I
= –7 V –100 –40
Driver and Receiver enabled DE = V
CC
, RE = GND 720 850 μA
Driver enabled, receiver
DE = V
CC
, RE = V
CC
400 μA
disabled
Supply current, steady-state, no load
I
CC
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 = V
CC
Supply current (dynamic) See “TYPICAL CHARACTERISTICS” section
(1) Under any specific conditions, V
IT+
is assured to be at least V
HYS
higher than V
IT–
.
Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): SN65HVD37