74HC390 Datasheet, PDF (3/7 Pages) NXP Semiconductors – Dual decade ripple counter

Philips Semiconductors
Dual decade ripple counter
Product specification
74HC/HCT390
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
PIN DESCRIPTION
PIN NO.
1, 15
2, 14
3, 5, 6, 7
4, 12
8
13, 11, 10, 9
16
SYMBOL
1CP₀, 2CP₀
1MR, 2MR
1Q₀ to 1Q₃
1CP₁, 2CP₁
GND
2Q₀ to 2Q₃
V_CC
NAME AND FUNCTION
clock input divide-by-2 section (HIGH-to-LOW, edge-triggered)
asynchronous master reset inputs (active HIGH)
flip-flop outputs
clock input divide-by-5 section (HIGH-to-LOW, edge triggered)
ground (0 V)
flip-flop outputs
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
December 1990
3