Datasheet
SN75ALS191
DUAL DIFFERENTIAL LINE DRIVER
SLLS032B − DECEMBER 1987 − REVISED MAY 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
V
IK
Input clamp voltage V
CC
= 4.75 V, I
I
= −18 mA −1 −1.2 V
V
Hi h l l t t lt
V
CC
= 4.75 V
,
V
IH
= 2 V
,
I
OH
= − 10 mA 2.5 3.3
V
V
OH
High-level output voltage
V
CC
=
4
.
75
V
,
V
IH
=
2
V
,
V
IL
= 0.8 V
I
OH
= − 40 mA 2
V
V
OL
Low-level output voltage
V
CC
= 4.75 V, V
IH
= 2 V,
I
OL
= 40 mA
V
IL
= 0.8 V,
0.5 V
|V
OD1
| Differential output voltage V
CC
= 5.25 V, I
O
= 0 2 V
OD2
V
|V
OD2
| Differential output voltage 2 V
Δ |V
OD
|
Change in magnitude of
differential output voltage
‡
V
CC
= 4.75 V to 5.25 V, R
L
= 100 Ω,
± 0.4 V
V
OC
Common-mode output voltage
§
V
CC
=
4
.
75
V
to
5
.
25
V
,
See Figure 1
R
L
=
100
Ω
,
3 V
Δ |V
OC
|
Change in magnitude of
common-mode output voltage
‡
± 0.4 V
V
O
= 6 V 0.1 100
I
O
Output current with power off V
CC
= 0
V
O
= − 0.25 V −0.1 −100
μA
I
O
Output
current
with
power
off
V
CC
0
V
O
= − 0.25 V to 6 V ± 100
μA
I
I
Input current V
CC
= 5.25 V, V
I
= 5.5 V 50 μA
I
IH
High-level input current V
CC
= 5.25 V, V
I
= 2.7 V 25 μA
I
IL
Low-level input current V
CC
= 5.25 V, V
I
= 0.5 V 200 μA
I
OS
Short-circuit output current
¶
V
CC
= 5.25 V, V
O
= 0 −50 −150 mA
I
CC
Supply current (all drivers) V
CC
= 5.25 V, No load, All inputs at 0 V 32 40 mA
†
All typical values are at V
CC
= 5 V and T
A
= 25°C.
‡
| 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
.
¶
Only one output at a time should be shorted, and duration of the short circuit should not exceed one second.
switching characteristics over recommended operating free-air temperature range, V
CC
= 5 V
PARAMETER TEST CONDITIONS MIN TYP
#
MAX UNIT
t
d(OD)
Differential-output delay time 3.5 7 ns
t
t(OD)
Differential-output transition time
C
L
= 15 pF, R
L
= 100 Ω, See Figure 2
3.5 7 ns
Skew
L
p,
L
,g
1.5 4 ns
# Typical values are at T
A
= 25°C.