HEF4894BP NRND

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.

Not recommended for new designs (NRND).
This product has been discontinued, click here for discontinuation information and replacement parts.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
HEF4894BP HEF4894BP,112 935194370112 SOT146-1 Order product

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

Target applications

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)No of bitsPower dissipation considerationsTamb (°C)Package name
HEF4894BP
NRND
End of life4.5 - 15CMOS20452812medium-40~85DIP20

Package

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
HEF4894BP
NRND
HEF4894BP,112
( 9351 943 70112 )
Withdrawn / End-of-lifeHEF4894BP
DIP20
(SOT146-1)
SOT146-1Bulk Pack

Discontinuation information

Type numberOrderable part numberlabel.orderingCodeLast time buy dateLast time delivery dateReplacement productStatusComments
HEF4894BP
NRND
HEF4894BP,1129351943701122015-03-312015-06-30No replacementVersion withdrawal

Quality, reliability & chemical content

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
HEF4894BP
NRND
HEF4894BP,112Not availableNANA
Quality and reliability disclaimer

Documentation (3)

File nameTitleTypeDate
HEF4894B12-stage shift-and-store register LED driverData sheet2017-03-17
AN11051Pin FMEA HEF4000 familyApplication note2019-01-09
SOT146-1plastic, dual in-line package; 20 leads; 2.54 mm pitch; 26.1 mm x 6.35 mm x 4.2 mm bodyOutline drawing2017-01-30

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