Datasheet
SN75C189, SN75C189A
QUADRUPLE LOW-POWER LINE RECEIVERS
SLLS041G – OCTOBER 1988 – REVISED JANUARY 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
MIN NOM MAX UNIT
V
CC
Supply voltage 4.5 5 6 V
V
I
Input voltage (see Note 3) –25 25 V
I
OH
High-level output current –3.2 mA
I
OL
Low-level output current 3.2 mA
Response-control current ±1 mA
T
A
Operating free-air temperature 0 70 °C
NOTE 3: The algebraic convention, where the more positive (less negative) limit is designated as maximum, is used in this data sheet for logic
levels only, e.g., if –10 V is a maximum, the typical value is a more negative voltage.
electrical characteristics over recommended free-air temperature range, V
CC
= 5 V ±10% (unless
otherwise noted) (see Note 4)
PARAMETER TEST CONDITIONS MIN
TYP
†
MAX UNIT
V
IT
Positive going in
p
ut threshold voltage
’C189
See Figure 1
1 1.5
V
V
IT+
Positi
v
e
-
going
inp
u
t
threshold
v
oltage
’C189A
See
Fig
u
re
1
1.6 2.25
V
V
IT
Negative going in
p
ut threshold voltage
’C189
See Figure 1
0.75 1.25
V
V
IT–
Negati
v
e
-
going
inp
u
t
threshold
v
oltage
’C189A
See
Fig
u
re
1
0.75 1 1.25
V
V
h
In
p
ut hysteresis voltage (V
IT
V
IT
)
’C189
See Figure 1
0.15 0.33
V
V
hys
Inp
u
t
h
y
steresis
v
oltage
(V
IT+
–
V
IT–
)
’C189A
See
Fig
u
re
1
0.65 0.97
V
V
CC
= 4.5 V to 6 V, V
I
= 0.75 V,
35
V
OH
High level out
p
ut voltage
CC
,
I
OH
= –20 µA
I
,
3
.
5
V
V
OH
High
-
le
v
el
o
u
tp
u
t
v
oltage
V
CC
= 4.5 V to 6 V,
I
OH
= –3.2 mA
V
I
= 0.75 V,
2.5
V
V
OL
Low level out
p
ut voltage
V
CC
= 4.5 V to 6 V, V
I
= 3 V,
04
V
V
OL
Lo
w-
le
v
el
o
u
tp
u
t
v
oltage
CC
,
I
OL
= 3.2 mA
I
,
0
.
4
V
I
IH
High level in
p
ut current
See Figure 2
V
I
= 25 V 3.6 8.3
mA
I
IH
High
-
le
v
el
inp
u
t
c
u
rrent
See
Fig
u
re
2
V
I
= 3 V 0.43 1
mA
I
IL
Low level in
p
ut current
See Figure 2
V
I
= –25 V –3.6 –8.3
mA
I
IL
Lo
w-
le
v
el
inp
u
t
c
u
rrent
See
Fig
u
re
2
V
I
= –3 V –0.43 –1
mA
I
OS
Short-circuit output current See Figure 3 –35 mA
I
CC
Supply current
V
I
= 5 V,
See Figure 2
No load,
420 700 µA
†
All typical values are at T
A
= 25°C.
NOTE 4: All characteristics are measured with response-control terminal open.
switching characteristics, V
CC
= 5 V ±10%, T
A
= 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
PLH
Propagation delay time, low- to high-level output 6 µs
t
PHL
Propagation delay time, high- to low-level output 6 µs
t
TLH
Transition time, low- to high-level output
‡
R
L
= 5 kΩ, C
L
= 50 pF, See Figure 4
500 ns
t
THL
Transition time, high- to low-level output
‡
300 ns
t
w(N)
Duration of longest pulse rejected as noise
§
1 6 µs
‡
Measured between 10% and 90% points of output waveform
§
The receiver ignores any positive- or negative-going pulse that is less than the minimum value of t
w(N)
and accepts any postive- or negative-going
pulse greater than the maximum of t
w(N)
.