74HCT221D NXP Semiconductors, 74HCT221D Datasheet - Page 4
74HCT221D
Manufacturer Part Number
74HCT221D
Description
74HCT CMOS, SMD, 74HCT221, SOIC16
Manufacturer
NXP Semiconductors
Datasheet
1.74HC221D.pdf
(15 pages)
Specifications of 74HCT221D
Multivibrator Type
Non Retriggerable Monostable
Output Current
4mA
Logic Case Style
SOIC
No. Of Pins
16
Supply Voltage Range
4.5V To 5.5V
Operating Temperature
RoHS Compliant
Propagation Delay
30ns
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
74HCT221D
Manufacturer:
TI
Quantity:
11 400
Company:
Part Number:
74HCT221D
Manufacturer:
CORERIVER
Quantity:
481
Company:
Part Number:
74HCT221D
Manufacturer:
PHILIPS
Quantity:
17 201
Philips Semiconductors
December 1990
Dual non-retriggerable monostable
multivibrator with reset
Fig.4 Functional diagram.
4
FUNCTION TABLE
Notes
1. H = HIGH voltage level
2. If the monostable was triggered before this condition
3. For this combination the reset input must be LOW and
nR
L = LOW voltage level
X = don’t care
was established the pulse will continue as
programmed.
the following sequence must be used:
pin 1 (or 9) must be set HIGH or pin 2 (or 10) set LOW;
then pin 1 (or 9) must be LOW and pin 2 (or 10) set
HIGH. Now the reset input goes from LOW-to-HIGH
and the device will be triggered.
H
H
L
X
X
= LOW-to-HIGH level
= HIGH-to-LOW level
D
= one HIGH-level output pulse
= one LOW-level output pulse
INPUTS
nA
X
X
H
L
L
nB
X
X
H
H
L
74HC/HCT221
nQ
L
L
L
Product specification
(2)
(2)
OUTPUTS
(3)
nQ
H
H
H
(2)
(2)
(3)