74HC123AP-E Datasheet, PDF (3/11 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

HD74HC123A
Dual Retriggerable Monostable Multivibrators (with Clear)
REJ03D0564-0200
(Previous ADE-205-438)
Rev.2.00
Oct 11, 2005
Description
This multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used
as an inhibit input. Also included is a clear input that when taken low resets the one shot. The HD74HC123A can be
triggered on the positive transition of the clear while A is held low and B is held high.
The HD74HC123A is retriggerable. That is it may be triggered repeatedly while their outputs are generating a pulse
and the pulse will be extended.
Pulse width stability over a wide range of temperature. The output pulse equation is simply: tw = (Rext) (Cext).
Features
• High Speed Operation
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC123AP
DILP-16 pin
PRDP0016AE-B _P
(DP-16FV)
HD74HC123AFPEL
SOP-16 pin (JEITA)
PRSP0016DH-B
(FP-16DAV)
FP
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
Function Table
Note:
H:
L:
X:
Inputs
Clear
A
B
L
X
X
X
H
X
X
X
L
H
L
H
H
L
H
External timing capacitance connects between Cext and Rext/Cext.
High level
Low level
Irrelevant
Outputs
Q
Q
L
H
L
H
L
H
Rev.2.00, Oct 11, 2005 page 1 of 8