Datasheet

CD54AC161, CD74AC161
4-BIT SYNCHRONOUS BINARY COUNTERS
SCHS239C – SEPTEMBER 1998 – REVISED MARCH 2003
9
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
(INPUT)
TO
(OUTPUT)
V
CC
–55°C to
125°C
–40°C to
85°C
UNIT
(INPUT)
(OUTPUT)
CC
MIN MAX MIN MAX
1.5 V 7 8
f
max
3.3 V ± 0.3 V 64 73
MHz
5 V ± 0.5 V 90 103
1.5 V – 209 – 190
RCO
3.3 V ± 0.3 V 6 23.4 6 21
CLK
5 V ± 0.5 V 4.3 16.7 4.3 15.2
CLK
1.5 V – 207 – 188
Any Q
3.3 V ± 0.3 V 5.9 23.1 5.9 21
5 V ± 0.5 V 4.2 16.5 4.2 15
1.5 V – 129 – 117
t
pd
ENT RCO
3.3 V ± 0.3 V 3.6 14.4 3.7 13.1
ns
5 V ± 0.5 V 2.6 10.3 2.7 9.4
1.5 V – 207 – 188
Any Q
3.3 V ± 0.3 V 5.9 23.1 5.9 21
CLR
5 V ± 0.5 V 4.2 16.5 4.2 15
CLR
1.5 V – 207 – 188
RCO
3.3 V ± 0.3 V 5.9 23.1 5.9 21
5 V ± 0.5 V 4.2 16.5 4.2 15
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load 66 pF