Datasheet
ISO1176T
SLLSE28F –OCTOBER 2010–REVISED OCTOBER 2012
www.ti.com
SUPPLY CURRENT
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CC1
= 3.3 V ± 10%, DE, RE = 0V or V
CC1
,
4.5 8 mA
No load
Logic-side quiescent supply
I
CC1
(1)
current
V
CC1
= 5 V ± 10%, DE, RE = 0V or V
CC1
, No
7 11 mA
load
V
CC2
= 5 V ± 5%, DE, RE = 0V or V
CC1
, No
I
CC2
(1)
Bus-side quiescent supply current 13.5 18 mA
load
(1) I
CC1
and I
CC2
are measured when device is connected to external power supplies. D1 and D2 are disconnected from external
transformer.
ISODE-PIN ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
OH
= –8mA V
CC2
– 0.8 4.6
V
OH
High-level output voltage V
I
OH
= –20µA V
CC2
– 0.1 5
I
OL
= 8mA 0.2 0.4
V
OL
Low-level output voltage V
I
OL
= 20µA 0 0.1
RS-485 DRIVER ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
OD
Open-circuit differential output voltage |V
A
– V
B
|, See Figure 2 1.5 V
CC2
V
See Figure 3 and Figure 7 2.1
Steady-state differential output voltage
|V
OD(SS)
| V
See Figure 4, Common-mode loading
magnitude
2.1
with Vtest from –7V to +12V
Change in steady-state differential output
|ΔV
OD(SS)
| See Figure 5 and Figure 6, R
L
= 54Ω -0.2 0.2 V
voltage between logic states
Steady-state common-mode output
V
OC(SS)
2 3
voltage
Change in steady-state common-mode
ΔV
OC(SS)
See Figure 5 and Figure 65, R
L
= 54Ω –0.2 0.2 V
output voltage
Peak-to-peak common-mode output
V
OC(pp)
0.5
voltage
Differential output voltage over and under
V
OD(ring)
See Figure 7 and Figure 10 10% V
OD(pp)
shoot
I
I
Input current D, DE at 0V or V
CC1
–10 10 µA
I
O(OFF)
Power-off output current V
CC2
= 0 V
See receiver input current
I
OZ
High-impedance output current DE at 0V
I
OS(P)
Peak short-circuit output current V
OS
= –7V to 12V -250 250
See
Figure 9, DE V
OS
= 12V, D at GND1 135 mA
I
OS(SS)
Steady-state short-circuit output current
at V
CC1
V
OS
= –7V, D at V
CC1
–135
C
OD
Differential output capacitance See receiver C
IN
CMTI Common-mode transient immunity See Figure 20 25 kV/µs
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