74HC423D

Dual retriggerable monostable multivibrator with reset

GENERALDESCRIPTION The74HC/HCT423arehigh-speedSi-gateCMOSdevicesandarepincompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedincompliancewithJEDECstandardno.7A. FEATURES •DCtriggeredfromactiveHIGHoractiveLOWinputs •Retriggerableforverylongpulsesup

PHI

74HC423D

Dual retriggerable monostable multivibrator with reset

Generaldescription 74HC423;74HCT423arehigh-speedSi-gateCMOSdevicesthatarepincompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedincompliancewithJEDECstandardno.7A. Features ■DCtriggeredfromactiveHIGHoractiveLOWinputs ■Retriggerableforverylongpulses

ETC

74HC423D

Dual retriggerable monostable multivibrator with reset

1.Generaldescription The74HC423isadualretriggerablemonostablemultivibratorwithoutputpulsewidth controlbytwomethods.Thebasicpulsetimeisprogrammedbyselectionofanexternal resistor(REXT)andcapacitor(CEXT).Oncetriggered,thebasicoutputpulsewidthmaybe extended

74HC423D

Dual retriggerable monostable multivibrator with reset; • DC triggered from active HIGH or active LOW inputs\n• Retriggerable for very long pulses up to 100 % duty factor\n• Direct reset terminates output pulse\n• Schmitt-trigger action on all inputs except for the reset input\n• Complies with JEDEC standard no. 7A\n• Input levels:• For 74HC423: CMOS level\n\n• ESD protection:• HBM JESD22-A114F exceeds 2000 V\n• MM JESD22-A115-A exceeds 200 V\n\n• Specified from -40 °C to +85 °C and from -40 °C to +125 °C\n;

The 74HC423 is a dual retriggerable monostable multivibrator with output pulse width control by two methods. The basic pulse time is programmed by selection of an external resistor (REXT) and capacitor (CEXT). Once triggered, the basic output pulse width may be extended by retriggering (nA) or (nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long as desired. When nRD is LOW, it forces the nQ output LOW, the nQ output HIGH and also inhibits the triggering. Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise and fall times. The '423' is identical to the '123' but cannot be triggered via the reset input. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.\n

74HC423D

Dual retriggerable monostable multivibrator with reset

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74HC423DB

Dual retriggerable monostable multivibrator with reset

GENERALDESCRIPTION The74HC/HCT423arehigh-speedSi-gateCMOSdevicesandarepincompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedincompliancewithJEDECstandardno.7A. FEATURES •DCtriggeredfromactiveHIGHoractiveLOWinputs •Retriggerableforverylongpulsesup

PHI

74HC423D-Q100

Dual retriggerable monostable multivibrator with reset;

The 74HC423-Q100 is a dual retriggerable monostable multivibrator with output pulse width control by two methods. The basic pulse time is programmed by selection of an external resistor (REXT) and capacitor (CEXT). Once triggered, the basic output pulse width may be extended by retriggering (nA) or (nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long as desired. When nRD is LOW, it forces the nQ output LOW, the nQ output HIGH and also inhibits the triggering. Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise and fall times. The '423' is identical to the '123' but cannot be triggered via the reset input. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.\n This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.\n

74HC423D.653

Dual retriggerable monostable multivibrator with reset

ETC

74HC423D,652

Package：16-SOIC（0.154"，3.90mm 宽）；包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 类别：集成电路（IC） 多谐振荡器 描述：IC MULTIVIBRATOR 20NS 16SO

ETC

74HC423D,653

Package：16-SOIC（0.154"，3.90mm 宽）；包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 类别：集成电路（IC） 多谐振荡器 描述：IC MULTIVIBRATOR 20NS 16SO

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