Dual 4-bit static shift register

The HEF4015B is a dual edge-triggered 4-bit static shift register (serial-to-parallel converter). Each shift register has a serial data input (D), a clock input (CP), four fully buffered parallel outputs (Q0 to Q3) and an overriding asynchronous master reset input (MR). Information present on D is shifted to the first register position, and all the data in the register is shifted one position to the right on the LOW-to-HIGH transition of CP. A HIGH on MR clears the register and forces Q0 to Q3 to LOW, independent of CP and D. The clock input’s Schmitt trigger action makes the input highly tolerant of slower clock rise and fall times.

It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS(usually ground). Unused inputs must be connected to VDD, VSS, or another input.

Features and benefits

  • Tolerant of slow clock rise and fall times
  • Fully static operation
  • 5 V, 10 V, and 15 V parametric ratings
  • Standardized symmetrical output characteristics
  • Specified from -40 °C to +85 °C.
  • Complies with JEDEC standard JESD 13-B


  • Serial-to-parallel converter
  • Buffer stores
  • General purpose register


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
HEF4015BTProduction3.0 - 15CMOS± 2.440442medium-40~85793.637.3SO16


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Reel 13" Q1/T1 CECCActiveHEF4015BTHEF4015BT,653
( 9333 726 80653 )
Bulk Pack, CECCActiveHEF4015BTHEF4015BT,652
( 9333 726 80652 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
HEF4015BTHEF4015BT,653HEF4015BTweek 6, 200475.32.993.34E811
HEF4015BTHEF4015BT,652HEF4015BTweek 6, 200475.32.993.34E811
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
HEF4015BDual 4-bit static shift registerData sheet2017-03-17
AN11051Pin FMEA HEF4000 familyApplication note2019-01-09
Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm bodyPackage information2020-04-21


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