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HEF4894B

12-stage shift-and-store register LED driver

The HEF4894B is a 12-stage serial shift register. It has a storage latch associated with each stage for strobing data from the serial input (D) to the parallel LED driver outputs (QP0 to QP11). Data is shifted on positive-going clock (CP) transitions. The data in each shift register stage is transferred to the storage register when the strobe (STR) input is HIGH. Data in the storage register appears at the output whenever the output enable (OE) input signal is HIGH.

Two serial outputs (QS1 and QS2) are available for cascading a number of HEF4894B devices. Serial data is available at QS1 on positive-going clock edges to allow high-speed operation in cascaded systems with a fast clock rise time. The same serial data is available at QS2 on the next negative going clock edge. This is used for cascading HEF4894B devices when the clock has a slow rise time.

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

  • Wide supply voltage range from 3.0 V to 15.0 V

  • CMOS low power dissipation

  • High noise immunity

  • Fully static operation

  • 5 V, 10 V, and 15 V parametric ratings

  • Standardized symmetrical output characteristics

  • Complies with JEDEC standard JESD 13-B

  • ESD protection:

    • HBM JESD22-A114F exceeds 2000 V

    • MM JESD22-A115-B exceeds 200 V

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Nr of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
HEF4894BTProduction3.0 - 15CMOS-20452812medium-40~857720.053SO20
HEF4894BTTProduction3.0 - 15CMOS-20452812medium-40~85963.339TSSOP20

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
HEF4894BT
SO20
(SOT163-1) 		SOT163-1WAVE_BG-BD-1
SOT163-1_118ActiveHEF4894BTHEF4894BT,118
( 9351 943 80118 )
HEF4894BTT
TSSOP20
(SOT360-1) 		SOT360-1SSOP-TSSOP-VSO-WAVE
SOT360-1_118ActiveHEF4894HEF4894BTT,118
( 9352 831 58118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
HEF4894BT
SO20
(SOT163-1) 		SOT163-1WAVE_BG-BD-1
SOT163-1_112Withdrawn / End-of-lifeHEF4894BTHEF4894BT,112
( 9351 943 80112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
HEF4894BT9351943801122021-12-312022-06-30HEF4894BT
    HEF4894BTT9352831581122018-12-312019-06-30HEF4894BTT

      Environmental information

      Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
      HEF4894BTHEF4894BT,118HEF4894BTweek 4, 2004
      HEF4894BTTHEF4894BTT,118HEF4894BTTAlways Pb-free

      The variants in the table below are discontinued. See the table Discontinuation information for more information.

      Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
      HEF4894BTHEF4894BT,112HEF4894BTweek 4, 2004
      Quality and reliability disclaimer

      Documentation (7)

      File nameTitleTypeDate
      HEF4894B12-stage shift-and-store register LED driverData sheet2021-11-23
      AN11051Pin FMEA HEF4000 familyApplication note2019-01-09
      Nexperia_Selection_guide_2023Nexperia Selection Guide 2023Selection guide2023-05-10
      SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
      SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyPackage information2022-06-21
      SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyPackage information2022-06-20
      WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08

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      Ordering, pricing & availability

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