74HC4538-Q100

Dual retriggerable precision monostable multivibrator

The 74HC4538-Q100 is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has two trigger/retrigger inputs (nA and nB), a direct reset input (nCD), two complementary outputs (nQ and nQ), and two pins (nREXT/CEXT and nCEXT) for connecting the external timing components CEXT and REXT. Typical pulse width variation over temperature range is ± 0.2 %. The device may be triggered by either the positive or the negative edges of the input pulse. The duration and accuracy of the output pulse are determined by the external timing components CEXT and REXT. The output pulse width (TW) is equal to 0.7 × REXT × CEXT. The linear design techniques guarantee precise control of the output pulse width. A LOW level at nCD terminates the output pulse immediately. Schmitt-trigger action in the trigger inputs makes the circuit highly tolerant to slower rise and fall times. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Tolerant of slow trigger rise and fall times
  • Separate reset inputs
  • Triggering from falling or rising edge
  • Complies with JEDEC standard no. 7A
  • CMOS input levels:
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC4538D-Q100Production2.0 - 6.0CMOS± 5.227low-40~125772.535SO16
74HC4538PW-Q100Production2.0 - 6.0CMOS± 5.227low-40~1251091.037TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC4538D-Q100
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Active74HC4538D74HC4538D-Q100,118
( 9352 988 58118 )
74HC4538PW-Q100
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC453874HC4538PW-Q100,11
( 9352 988 59118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
74HC4538D-Q10074HC4538D-Q100,11874HC4538D-Q100Always Pb-free11
74HC4538PW-Q10074HC4538PW-Q100,1174HC4538PW-Q100Always Pb-free11
Quality and reliability disclaimer

Documentation (11)

File nameTitleTypeDate
74HC4538_Q100Dual retriggerable precision monostable multivibratorData sheet2017-03-23
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
Nexperia_Selection_guide_2021Nexperia Selection Guide 2021Selection guide2021-01-08
hchc Spice modelSPICE model2013-05-06
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2021-01-06
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21

Support

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Models

File nameTitleTypeDate
hchc Spice modelSPICE model2013-05-06

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