74hct4520 NXP Semiconductors, 74hct4520 Datasheet - Page 3

• Manufacturer Part Number: 74hct4520
• Description: Dual 4-bit Synchronous Binary Counter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PIN DESCRIPTION
December 1990
PIN NO.
1, 9
2, 10
3, 4, 5, 6
7, 15
8
11, 12, 13, 14
16
Dual 4-bit synchronous binary counter
Fig.1 Pin configuration.
SYMBOL
1CP
1CP
1Q
1MR, 2MR
GND
2Q
V
CC
0
0
0
1
to 1Q
to 2Q
, 2CP
, 2CP
3
3
0
1
NAME AND FUNCTION
clock inputs (LOW-to-HIGH, edge-triggered)
clock inputs (HIGH-to-LOW, edge-triggered)
data outputs
asynchronous master reset inputs (active HIGH)
ground (0 V)
data outputs
positive supply voltage
Fig.2 Logic symbol.
3
Fig.3 IEC logic symbol.
74HC/HCT4520
Product specification