74LVC1G123DC

Single retriggerable monostable multivibrator; Schmitt trigger inputs


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The 74LVC1G123 is a single retriggerable monostable multivibrator with Schmitt trigger inputs. Output pulse width is controlled by three methods:

  1. The basic pulse is programmed by selection of an external resistor (REXT) and capacitor (CEXT).
  2. Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (A) or the active HIGH-going edge input (B). By repeating this process, the output pulse period (Q = HIGH) can be made as long as desired. Alternatively an output delay can be terminated at any time by a LOW-going edge on input CLR, which also inhibits the triggering.
  3. An internal connection from CLR to the input gates makes it possible to trigger the circuit by a HIGH-going signal at input CLR.

Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in a mixed 3.3 V and 5 V environment. Schmitt-trigger inputs, makes the circuit highly tolerant to slower input rise and fall times.

This device is fully specified for partial power-down applications using IOFF. The IOFF circuitry disables the output, preventing the damaging backflow current through the device when it is powered down.

Features and benefits

  • Wide supply voltage range from 1.65 V to 5.5 V
  • High noise immunity
  • ±24 mA output drive (VCC = 3.0 V)
  • CMOS low power consumption
  • DC triggered from active HIGH or active LOW inputs
  • Retriggerable for very long pulses up to 100 % duty factor
  • Direct reset terminates output pulse
  • Schmitt trigger on all inputs
  • Complies with JEDEC standard:
    • JESD8-7 (1.65 V to 1.95 V)
    • JESD8-5 (2.3 V to 2.7 V)
    • JESD8-B/JESD36 (2.7 V to 3.6 V)
  • Power-on-reset on outputs
  • Latch-up performance exceeds 100 mA
  • Direct interface with TTL levels
  • Inputs accept voltages up to 5.5 V
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
    • CDM JESD22-C101E exceeds 1000 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C
All information on this product information page is subject to the subsequent disclaimers:
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Parametric search

Parametrics of this product

Type numberPackageNr of pinsPackage nameProduct statustpd(ns)VCC(V)FamilyPower dissipation considerationsLogic switching levelsOutput drive capability(mA)DescriptionTamb(Cel)
74LVC1G123DCSOT765-1
(VSSOP8)		8VSSOP8Production3.51.65 - 5.5LVClowCMOS/LVTTL+/- 32single retriggerable monostable multivibrator-40~125

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
74LVC1G123DC74LVC1G123DC,1259352 956 65125Volume productionSOT765-1
(VSSOP8) 		Reel Pack, Reverse, ReverseY3

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT765-1VSSOP8plastic very thin shrink small outline package; 8 leads; body width 2.3 mmMO-187 (JEDEC); 2002-06-07

Related documents

Reflow soldering

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
74LVC1G123DC74LVC1G123DC,12574LVC1G123DCAlways Pb-free3.872.5839793281653747E811
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Documentation for this product

File nameTitleTypeFormatDate
74LVC1G123Single retriggerable monostable multivibrator; Schmitt trigger inputsData sheetpdf2013-03-29
AN10343MicroPak soldering informationApplication notepdf2010-12-30
AN212Package lead inductance considerations in high-speed applicationsApplication notepdf2013-03-13
AN10156Sorting through the low voltage logic mazeApplication notepdf2013-03-13

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
74LVC1G123DC9352 956 6512574LVC1G123DC,125       

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