Datasheet

     
     
  
SDAS124C − APRIL 1982 − REVISED AUGUST 1996
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS257
SN74AS258
UNIT
PARAMETER
TEST CONDITIONS
MIN TYP
†
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= −18 mA −1.2 V
V
OH
V
CC
= 4.5 V to 5.5 V, I
OH
= −2 mA V
CC
−2
V
V
OH
V
CC
= 4.5 V, I
OH
= −15 mA 2.4 3.2
V
V
OL
V
CC
= 4.5 V, I
OL
= 48 mA 0.35 0.5 V
I
OZH
V
CC
= 5.5 V, V
O
= 2.7 V 50 µA
I
OZL
V
CC
= 5.5 V, V
O
= 0.4 V −50 µA
I
I
A, B, or OE
V
CC
= 5.5 V,
V
I
= 7 V
0.1
mA
I
I
A/B
V
CC
= 5.5 V, V
I
= 7 V
0.2
mA
I
IH
A, B, or OE
V
CC
= 5.5 V,
V
I
= 2.7 V
20
A
I
IH
A/B
V
CC
= 5.5 V, V
I
= 2.7 V
40
µA
I
IL
A, B, or OE
V
CC
= 5.5 V,
V
I
= 0.4 V
−0.5
mA
I
IL
A/B
V
CC
= 5.5 V, V
I
= 0.4 V
−1
mA
I
O
‡
V
CC
= 5.5 V, V
O
= 2.25 V −30 −112 mA
Outputs high 12.1 19.7
SN74AS257 V
CC
= 5.5 V
Outputs low 19 30.6
I
CC
SN74AS257
V
CC
= 5.5 V
Outputs disabled 19.7 31.9
mA
I
CC
Outputs high 8.4 13.5
mA
SN74AS258 V
CC
= 5.5 V
Outputs low 15.2 24.6
SN74AS258
V
CC
= 5.5 V
Outputs disabled 15.5 25.2
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
OS
.