MM74HC123AMX_NL Fairchild Semiconductor, MM74HC123AMX_NL Datasheet - Page 6

• Manufacturer Part Number: MM74HC123AMX_NL
• Description: Monostable Multivibrator FINISHED GOOD
• Manufacturer: Fairchild Semiconductor

Specifications of MM74HC123AMX_NL

• Rohs: yes
• Elements Per Chip: 2
• Logic Family: HC
• Logic Type: Monostable Multivibrator
• Package / Case: SOIC-16 Narrow
• Propagation Delay Time: 197 ns, 48 ns, 38 ns
• High Level Output Current: - 5.2 mA
• Low Level Output Current: 5.2 mA
• Supply Voltage - Max: 6 V
• Supply Voltage - Min: 2 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
• Factory Pack Quantity: 2500

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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
(Continued)
REF2
Typical 1ms Pulse Width Variation vs.
, the reset latch
Temperature
6
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.
Minimum R
Supply Voltage
Supply
EXT
vs.