MM74HC423AN Fairchild Semiconductor, MM74HC423AN Datasheet - Page 4

• Manufacturer Part Number: MM74HC423AN
• Description: IC MULTIVIBRATOR MONO DL 16-DIP
• Manufacturer: Fairchild Semiconductor
• Series: 74HCr

Specifications of MM74HC423AN

• Logic Type: Monostable
• Independent Circuits: 2
• Schmitt Trigger Input: Yes
• Propagation Delay: 22ns
• Current - Output High, Low: 5.2mA, 5.2mA
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

www.fairchildsemi.com
Theory of Operation
RESET OPERATION
These one shots may be reset during the generation of the
output pulse. In the reset mode of operation, an input pulse
on clear sets the reset latch and causes the capacitor to be
fast charged to V
the voltage on the capacitor reaches V
will clear and then be ready to accept another pulse. If the
Note: R and C are not subjected to temperature. The C is polypropylene.
Typical Output Pulse Width vs.
Typical Distribution of Output
Pulse Width, Part to Part
CC
Timing Components
by turning on transistor Q1 5. When
Typical 1ms Pulse Width Variation vs. Temperature
(Continued)
REF2
, the reset latch
4
clear input is held LOW, any trigger inputs that occur will be
inhibited and the Q and Q outputs of the output latch will
not change. Since the Q output is reset when an input low
level is detected on the Clear input, the output pulse T can
be made significantly shorter than the minimum pulse width
specification.
Typical 1ms Pulse Width Variation vs. Supply
Minimum R
EXT
vs. Supply Voltage