Datasheet

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SCLS470A − MARCH 2003 − REVISED OCTOBER 2003
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
V
CC
T
A
= 25°C SN54HC109 SN74HC109
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 6 10 4.2 5
f
max
4.5 V 31 50 21 25
ns
f
max
6 V 36 60 25 29
ns
2 V 60 230 345 290
PRE or CLR Q or Q
4.5 V 15 46 69 58
t
pd
PRE or CLR
Q or Q
6 V 12 39 59 49
ns
t
pd
2 V 50 175 250 220
ns
CLK Q or Q
4.5 V 15 35 50 44
CLK
Q or Q
6 V 12 30 42 37
2 V 28 75 110 95
t
t
Q or Q
4.5 V 8 15 22 19
ns
t
t
Q or Q
6 V 6 13 19 16
ns
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance per buffer/driver No load 35 pF