74HC190 Datasheet, PDF (4/13 Pages) NXP Semiconductors – Presettable synchronous BCD decade up/down counter

Philips Semiconductors
Presettable synchronous BCD decade
up/down counter
PIN DESCRIPTION
PIN NO.
3, 2, 6, 7
4
5
8
11
12
13
14
15, 1, 10, 9
16
SYMBOL
Q₀ to Q₃
CE
U/D
GND
PL
TC
RC
CP
D₀ to D₃
V_CC
NAME AND FUNCTION
flip-flop outputs
count enable input (active LOW)
up/down input
ground (0 V)
parallel load input (active LOW)
terminal count output
ripple clock output (active LOW)
clock input (LOW-to-HIGH, edge-triggered)
data inputs
positive supply voltage
Product specification
74HC/HCT190
Fig.1 Pin configuration.
Fig.2 Logic symbol.
December 1990
Fig.3 IEC logic symbol.
4