HCTS190MS Datasheet, PDF (2/10 Pages) Intersil Corporation – Radiation Hardened Synchronous 4-Bit Up/Down Counter

Functional Diagram
15 P0
PL
11
U/D
5
1 P1
HCTS190MS
10 P2
9 P3
PL
P
Q
T
CP ^Q
FF0
PL
P
Q
T
CP ^Q
FF1
PL
P
Q
T
CP ^Q
FF2
CE
4
CP
14
3 Q0
2 Q1
TRUTH TABLE
FUNCTION
P;
CE
Count Up
H
L
Count Down
H
L
Asynchronous Preset
L
X
No Change
H
H
H = High Level
L = Low Level
X = Immaterial
= Transition from low to high
NOTE: U/D or CE should be changed only when clock is high.
6 Q2
U/D
L
H
X
X
PL
P
Q
Q3
T
CP ^Q
7
FF3
TC
12
13
RC
CP
X
X
Spec Number 518614
2