74AHC123AD,118

Series:	74AHC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Logic Type:	Monostable
Independent Circuits:	2
Schmitt Trigger Input:	No
Propagation Delay:	5.1ns
Current - Output High, Low:	8mA, 8mA
Voltage - Supply:	2V ~ 5.5V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SO
Base Part Number:	74AHC123

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Logic - MultivibratorsThe 74AHC123AD and 118 are two different types of chips from the Logic family. They are both used in logic and timing applications. The 74AHC123AD is an asynchronous dual retriggerable monostable multivibrator (single-shot), while the 118 is a dual retriggerable monostable multivibrator with both synchronous and asynchronous reset. The two multivibrators share many similarities in their applications and working principles. Generally speaking, these devices can be used in circuits to produce a pulse, which might be needed to control the speed, timing, or other functions of a system or device. They can also be used as triggers, clocking elements, and in many other applications. The 74AHC123AD consists of two independent, edge-triggered, retriggerable monostable multivibrators with active-low outputs. It is designed to produce a single pulse with a specific duration in response to an input pulse train with variable spacing. Its active-low output is valid for a predetermined period after the falling edges of either Enable, Reset, or Input pulses. The 74AHC123AD allows different output pulse widths by adjusting the external capacitance or resistance. The 118 is a same-function device, but with synchronous reset capability that provides noise immunity to the circuit. In addition, it features an active-high enable/asynchronous reset input, a programmable timeout that can be adjustable via an external capacitor or resistance, and a wide operating temperature range. Both the 74AHC123AD and the 118 can be used in digital systems, analog systems, and in a variety of clocked applications where multiple pulses or pulses of specific duration are required. Furthermore, they can be used to create oscillators and timing circuits, as well as pulse generation and reset systems, and counter systems. When using either of these two multivibrators, it is important to note that their respective slew rates must be kept low enough to prevent negative transitions on the outputs. This can be done by limiting the number of transitions between the low and high states. Additionally, it is important to use the correct values for the external capacitance or resistance to ensure proper operation. In conclusion, the 74AHC123AD and 118 are two multivibrators from the Logic family. They share many similarities in their applications and working principles and are often used in circuits to produce a pulse with a specific duration, provide clocking elements, and create oscillators, timing circuits, and reset systems.

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