Datasheet

74HC_HCT123 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 9 — 19 January 2015 3 of 25
NXP Semiconductors
74HC123; 74HCT123
Dual retriggerable monostable multivibrator with reset
Fig 2. Logic symbol Fig 3. IEC logic symbol
4
4
5'
5'
6
5(;7&(;7


5(;7&(;7 
&(;7 
&(;7 
4 
4
4

4 

PQD
5'
$
$
 %



%
7
PQD
&;




5&;
5




&;




5&;
5




Fig 4. Logic diagram
PQD
Q5(;7&(;7
9
&&
9
&&
9
&&
5
Q5'
Q$
Q%
5
&/
&/
&/
&/ &/
Q4
Q4
5
5