Datasheet

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DESCRIPTION/ORDERING INFORMATION (CONTINUED)
CLR
C
ext
R /C
ext ext
R
B
A
Q
Q
SN74AHC123A-EP
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
SCLS703A – JULY 2006 – REVISED MARCH 2007
During power up, Q outputs are in the low state and Q outputs are in the high state. The outputs are glitch free,
without applying a reset pulse.
For additional application information on multivibrators, see the application report Designing With the
SN74AHC123A and SN74AHCT123A, literature number SCLA014.
ORDERING INFORMATION
(1)
T
A
PACKAGE
(2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
–55 ° C to 125 ° C SOIC – D Tape and reel SN74AHC123AMDREP AHC123A-EP
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
Web site at www.ti.com .
(2) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
FUNCTION TABLE
(each multivibrator)
INPUTS OUTPUTS
CLR A B Q Q
L X X L H
X H X L
(1)
H
(1)
X X L L
(1)
H
(1)
H L ↑
H ↓ H
↑ L H
(1) These outputs are based on the assumption that the indicated
steady-state conditions at the A and B inputs have been set up long
enough to complete any pulse started before the setup.
LOGIC DIAGRAM, EACH MULTIVIBRATOR (POSITIVE LOGIC)
2
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