Datasheet

SN54ALS161B, SN54ALS162B, SN54ALS163B, SN54AS161, SN54AS163
SN74ALS161B, SN74ALS163B, SN74AS161, SN74AS163
SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
SDAS276A – DECEMBER 1994 – REVISED JULY 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
1D
C1
1D
C1
1D
C1
1D
C1
1
9
10
7
2
3
4
5
6
15
14
13
12
11
CLR
LOAD
ENT
ENP
CLK
A
B
C
D
RCO
Q
A
Q
B
Q
C
Q
D
’ALS163B and ’AS163
Pin numbers shown are for the D, DB, J, and N packages.
’ALS161B and ’AS161 synchronous binary counters are similar; however, CLR
is asynchronous.