SN54ALS161B_08 Datasheet, PDF (5/27 Pages) Texas Instruments – SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS

SN54ALS161B, SN54ALS162B, SN54ALS163B, SN54AS161, SN54AS163
SN74ALS161B, SN74ALS163B, SN74AS161, SN74AS163
SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
SDAS276A – DECEMBER 1994 – REVISED JULY 2000
typical clear, preset, count, and inhibit sequences
SN54ALS162B
The following sequence is illustrated below:
1. Clear outputs to zero (SN54ALS162B is synchronous)
2. Preset to BCD 7
3. Count to 8, 9, 0, 1, 2, and 3
4. Inhibit
CLR
LOAD
A
B
Data
Inputs
C
D
CLK
ENP
ENT
Data
Outputs
QA
QB
QC
QD
RCO
7 89
Sync Preset
Clear
Async
Clear
01 2 3
Count
Inhibit
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
5