HD74LS123P
HD74LS123P is Dual Retriggerable Monostable Multivibrators manufactured by Renesas.
- Part of the HD74LS123 comparator family.
- Part of the HD74LS123 comparator family.
features output pulse width control by three method. The basic pulse time is programmed by selection of external resistance and capacitance values. Once triggered, the basic pulse width may be extended by retriggering the gated low-level -active (A) or high-level active (B) inputs, or be reduced by use of the overriding clear. Figure 1 illustrates pulse control by retriggering and early clear. This device is provided enough Schmitt hysteresis to ensure jitter-free triggering from the B input with transition rates as slow as 0.1 m V/ns.
Features
- Ordering Information
Part Name
Package Type
Package Code (Previous Code)
Package Abbreviation
DILP-16 pin
PRDP0016AE-B
(DP-16FV)
HD74LS123FPEL SOP-16 pin (JEITA)
PRSP0016DH-B (FP-16DAV)
PRSP0016DG-A
HD74LS123RPEL SOP-16 pin (JEDEC) (FP-16DNV)
Note: Please consult the sales office for the above package availability.
Taping Abbreviation (Quantity)
- EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
A = "L" Clear = "H" B
A = "L" B
Clear Q
Retrigger Pulse "H"
"L" tw + t PLH "H" tw
"L"
Output without retrigger
"H"
"L" "H"
"L"
Output without clear
"H" "L"
Figure 1
Typical Input / Output Pulse
Rev.2.00, Feb.18.2005, page 1 of 8
HD74LS123
Pin Arrangement
1A 1 1B 2 1CLR 3 1Q 4 2Q 5 2Cext 6 2Rext/Cext 7 GND...
