74hct221 NXP Semiconductors, 74hct221 Datasheet - Page 3

• Manufacturer Part Number: 74hct221
• Description: Dual Non-retriggerable Monostable Multivibrator With Reset
• Manufacturer: NXP Semiconductors

Philips Semiconductors
ORDERING INFORMATION
See
PIN DESCRIPTION
December 1990
PIN NO.
1, 9
2, 10
3, 11
4, 12
7
8
13, 5
14, 6
15
16
Dual non-retriggerable monostable
multivibrator with reset
“74HC/HCT/HCU/HCMOS Logic Package Information”
Fig.1 Pin configuration.
SYMBOL
1A, 2A
1B, 2B
1R
1Q, 2Q
2R
GND
1Q, 2Q
1C
1R
V
CC
D
EXT
EXT
EXT
, 2R
/C
, 2C
/C
D
EXT
EXT
EXT
NAME AND FUNCTION
trigger inputs (negative-edge triggered)
trigger inputs (positive-edge triggered)
direct reset inputs (active LOW)
outputs (active LOW)
external resistor/capacitor connection
ground (0 V)
outputs (active HIGH)
external capacitor connection
external resistor/capacitor connection
positive supply voltage
Fig.2 Logic symbol.
3
.
Fig.3 IEC logic symbol.
74HC/HCT221
Product specification