UT54ACS190 Datasheet, PDF (2/10 Pages) Aeroflex Circuit Technology – Synchronous 4-Bit Up-Down BCD Counters

FUNCTION TABLE
Function
Count up
Count down
Asynchronous
Reset
No change
LOAD
H
H
L
H
CTEN
L
L
X
H
D/U CLK
L
↑
H
↑
X
X
X
X
LOGIC DIAGRAM
CLK ⁽¹⁴⁾
(5)
D/U
A ⁽¹⁵⁾
CTEN ⁽⁴⁾
B ⁽¹⁾
(10)
C
(9)
D
LOAD ⁽¹¹⁾
LOGIC SYMBOL
(4)
CTEN ₍₅₎
D/U
(14)
CLK
(11)
LOAD
(15)
A ₍₁₎
B ₍₁₀₎
C ₍₉₎
D
CTRDIV 10
G
M2 (DOWN) 2(CT=0)
M3 (UP) 3(CT=9)Z6
1,2 -/1,3+
G4
6,1,4
C5
5D
(1) ±7
(2)
(4)
(8)
(12)
MAX/MIN
(13)
RCO
(3)
(2) ^QA
(6) ^QB
(7) ^QC
Q_D
Note:
1. Logic symbol in accordance with ANSI/IEEE standard 91-1984 and IEC
Publication 617-12.
(13)
RCO
(12) _MAX/MIN
J ^SQ
C
KR Q
(3) _QA
S
JQ
C
KR Q
(2) _QB
J ^SQ
C
KR Q
(6) _QC
J ^SQ
C
KR Q
(7) _QD
2