Datasheet

 
 
  
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, C
L
= 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
V
CC
T
A
= 25°C SN54HC251 SN74HC251
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 72 300 450 375
A, B, or C W or Y
4.5 V 25 60 90 75
t
pd
A, B, or C
W or Y
6 V 22 52 77 65
ns
t
pd
2 V 59 300 450 375
ns
Any D W or Y
4.5 V 21 60 90 75
Any D
W or Y
6 V 18 52 77 65
2 V 50 230 340 285
t
en
OE
W or Y
4.5 V 17 46 68 57
ns
t
en
OE
W or Y
6 V 15 40 58 50
ns
2 V 45 210 315 265
t
t
W or Y
4.5 V 17 42 63 53
ns
t
t
W or Y
6 V 13 36 53 45
ns
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load 70 pF