Datasheet

SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
V
IK
Input clamp voltage I
I
= –18 mA –1.5 V
V
OH
High level out
p
ut voltage
V
IH
= 2 V, V
IL
= 0.8 V,
37
V
V
OH
High
-
le
v
el
o
u
tp
u
t
v
oltage
IH
,
IL
,
I
OH
= –33 mA
3
.
7
V
V
OL
Low level out
p
ut voltage
V
IH
= 2 V, V
IL
= 0.8 V,
11
V
V
OL
Lo
w-
le
v
el
o
u
tp
u
t
v
oltage
IH
,
IL
,
I
OL
= 33 mA
1
.
1
V
V
O
Output voltage I
O
= 0 0 6 V
|V
OD1
| Differential output voltage I
O
= 0 1.5 6 6 V
R
L
= 100 Ω See Figure 1
1/2 V
OD1
V
|V
OD2
| Differential output voltage
R
L
=
100
Ω
,
See
Fig
u
re
1
OD1
or 2
‡
V
R
L
= 54 Ω, See Figure 1 1.5 2.5 5 V
V
OD3
Differential output voltage See Note 2 1.5 5 V
∆|V
OD|
Change in magnitude of differential output
voltage
§
±0.2 V
V
OC
Common mode output voltage
¶
R54Ωor 100 Ω See Figure 1
+3
V
V
OC
C
ommon-mo
d
e ou
t
pu
t
vo
lt
age
¶
R
L
=
54
Ω
or
100
Ω
,
S
ee
Fi
gure
1
–1
V
∆|V
OC
|
Chan
g
e in ma
g
nitude of common-mode output
±02
V
∆|V
OC
|
Change
in
magnitude
of
common mode
out ut
voltage
§
±0
.
2
V
I
O
Output current with power off V
CC
= 0, V
O
= – 7 V to 12 V ±100 µA
I
OZ
High-impedance-state output current V
O
= – 7 V to 12 V ±100 µA
I
IH
High-level input current V
I
= 2.7 V 20 µA
I
IL
Low-level input current V
I
= 0.5 V –360 µA
V
O
= – 7 V –180
I
OS
Short-circuit output current
V
O
= V
CC
180
mA
V
O
= 12 V 500
I
CC
Su
pp
ly current (all drivers)
No load
Outputs enabled 38 60
mA
I
CC
S
u
ppl
y
c
u
rrent
(all
dri
v
ers)
No
load
Outputs disabled 18 40
mA
†
All typical values are at V
CC
= 5 V and T
A
= 25°C.
‡
The minimum V
OD2
with a 100-Ω load is either 1/2 V
OD1
or 2 V, whichever is greater.
§
∆|V
OD
| and ∆|V
OC
| are the changes in magnitude of V
OD
and V
OC
, respectively, that occur when the input is changed from a high level to a low
level.
¶
In ANSI Standard EIA/TIA-422-B, V
OC
, which is the average of the two output voltages with respect to ground, is called output offset voltage,
V
OS
.
NOTE 2: See EIA Standard RS-485.
switching characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
d(OD)
Differential-output delay time
R
L
=54Ω See Figure 2
45 65 ns
t
t(OD)
Differential-output transition time
R
L
=
54
Ω
,
See
Fig
u
re
2
80 120 ns
t
PZH
Output enable time to high level R
L
= 110 Ω, See Figure 3 80 120 ns
t
PZL
Output enable time to low level R
L
= 110 Ω, See Figure 4 55 80 ns
t
PHZ
Output disable time from high level R
L
= 110 Ω, See Figure 3 75 115 ns
t
PLZ
Output disable time from low level R
L
= 110 Ω, See Figure 3 18 30 ns