IC MULTIVIBRATOR DUAL 16-SOIC

 

MM74HC123AMX

Manufacturer Part NumberMM74HC123AMX
DescriptionIC MULTIVIBRATOR DUAL 16-SOIC
ManufacturerFairchild Semiconductor
Series74HC
MM74HC123AMX datasheets

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Specifications of MM74HC123AMX

Logic TypeMonostableIndependent Circuits2
Schmitt Trigger InputYesPropagation Delay22ns
Current - Output High, Low5.2mA, 5.2mAVoltage - Supply2 V ~ 6 V
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case16-SOIC (3.9mm Width)Lead Free Status / RoHS StatusLead free / RoHS Compliant
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MM74HC123A
Dual Retriggerable Monostable Multivibrator
General Description
The MM74HC123A high speed monostable multivibrators
(one shots) utilize advanced silicon-gate CMOS technol-
ogy. They feature speeds comparable to low power Schot-
tky TTL circuitry while retaining the low power and high
noise immunity characteristic of CMOS circuits.
Each multivibrator features both a negative, A, and a posi-
tive, 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 MM74HC123A
can be triggered on the positive transition of the clear while
A is held LOW and B is held HIGH.
The MM74HC123A is retriggerable. That is it may be trig-
gered repeatedly while their outputs are generating a pulse
and the pulse will be extended.
Pulse width stability over a wide range of temperature and
supply is achieved using linear CMOS techniques. The out-
Ordering Code:
Order Number
Package Number
MM74HC123AM
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
MM74HC123ASJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HC123AMTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HC123AN
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignment for DIP, SOIC, SOP and TSSOP
Top View
© 1999 Fairchild Semiconductor Corporation
put pulse equation is simply: PW
PW is in seconds, R is in ohms, and C is in farads. All
inputs are protected from damage due to static discharge
by diodes to V
and ground.
CC
Features
Typical propagation delay: 25 ns
Wide power supply range: 2V–6V
Low quiescent current: 80 A maximum (74HC Series)
Low input current: 1 A maximum
Fanout of 10 LS-TTL loads
Simple pulse width formula T
Wide pulse range: 400 ns to
Part to part variation: 5% (typ)
Schmitt Trigger A & B inputs enable infinite signal input
rise and fall times.
Package Description
Timing Component
Note: Pin 6 and Pin 14 must be hard-wired to GND.
DS005206.prf
September 1983
Revised February 1999
(R
) (C
); where
EXT
EXT
RC
(typ)
www.fairchildsemi.com

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MM74HC123AMX Summary of contents

  • Page 1

    ... Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Pin Assignment for DIP, SOIC, SOP and TSSOP Top View © 1999 Fairchild Semiconductor Corporation put pulse equation is simply seconds ohms, and farads. All inputs are protected from damage due to static discharge by diodes to V and ground ...

  • Page 2

    Truth Table Inputs Clear HIGH Level L LOW Level Transition from LOW-to-HIGH Transition from HIGH-to-LOW One HIGH Level Pulse One LOW Level Pulse X Irrelevant Logic Diagram www.fairchildsemi.com Outputs ...

  • Page 3

    Absolute Maximum Ratings (Note 2) Supply Voltage ( Input Voltage ( Output Voltage ( OUT Clamp Diode Current ( Output Current, ...

  • Page 4

    AC Electrical Characteristics Symbol Parameter t Maximum Trigger Propagation Delay PLH Clear Maximum Trigger Propagation Delay PHL ...

  • Page 5

    Theory of Operation 1POSITIVE EDGE TRIGGER 2NEGATIVE EDGE TRIGGER 3POSITIVE EDGE TRIGGER 4POSITIVE EDGE RE-TRIGGER (PULSE LENGTHENING) 5RESET PULSE SHORTENING 6CLEAR TRIGGER TRIGGER OPERATION As shown in Figure 1 and the logic diagram, before an input trigger occurs, the one ...

  • Page 6

    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 ...

  • Page 7

    Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16A Package Number M16D 7 www.fairchildsemi.com ...

  • Page 8

    Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide www.fairchildsemi.com Package Number MTC16 8 ...

  • Page 9

    Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN ...

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