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

  • Fully static operation
  • 5 V, 10 V, and 15 V parametric ratings
  • Standardized symmetrical output characteristics
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C
  • Complies with JEDEC standard JESD 13-B

Parametrics

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
HEF4894BTProduction3.0 - 15CMOS-20452812medium-40~857720.053SO20
HEF4894BTTProduction3.0 - 15CMOS-20452812medium-40~85963.339TSSOP20

Package

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
HEF4894BT
SO20
(SOT163-1)
SOT163-1Reel 13" Q1/T1ActiveHEF4894BTHEF4894BT,118
( 9351 943 80118 )
Bulk PackActiveHEF4894BTHEF4894BT,112
( 9351 943 80112 )
HEF4894BTT
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHEF4894HEF4894BTT,118
( 9352 831 58118 )

Discontinuation information

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

    Quality, reliability & chemical content

    Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
    HEF4894BTHEF4894BT,118HEF4894BTweek 4, 200475.32.993.34E811
    HEF4894BTHEF4894BT,112HEF4894BTweek 4, 200475.32.993.34E811
    HEF4894BTTHEF4894BTT,118HEF4894BTTAlways Pb-free75.32.993.34E811
    Quality and reliability disclaimer

    Documentation (10)

    File nameTitleTypeDate
    HEF4894B12-stage shift-and-store register LED driverData sheet2017-03-17
    AN11051Pin FMEA HEF4000 familyApplication note2019-01-09
    Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
    SOT360-1_118TSSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-15
    SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyOutline drawing2018-10-18
    SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
    SOT163-1_118SO20; Reel pack for SMD, 13"; Q1/T1 product orientationPacking2020-02-14
    SOT163-1_115Tape reel SMD; standard product orientation 12NC ending 115Packing2013-04-25
    SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyOutline drawing2018-10-18
    SOT163-1_518SO20; Reel dry pack for SMD, 13"; Q1/T1 product orientationPacking2020-02-14

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