HEF4894BT

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.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
HEF4894BT HEF4894BT,118 935194380118 SOT163-1 Order product
HEF4894BT HEF4894BT,112 935194380112 SOT163-1 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)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
HEF4894BTProduction3.0 - 15CMOS-20452812medium-40~857720.053SO20

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
HEF4894BTHEF4894BT,118
( 9351 943 80118 )
ActiveHEF4894BT
SO20
(SOT163-1)
SOT163-1Reel 13" Q1/T1
HEF4894BT,112
( 9351 943 80112 )
ActiveHEF4894BTBulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
HEF4894BTHEF4894BT,118Not available75.32.993.34E811
HEF4894BTHEF4894BT,112Not available75.32.993.34E811
Quality and reliability disclaimer

Documentation (4)

File nameTitleTypeDate
HEF4894B12-stage shift-and-store register LED driverData sheet2017-03-17
AN11051Pin FMEA HEF4000 familyApplication note2019-01-09
SOT163-1_118SO20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-15
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

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
HEF4894BTHEF4894BT,118935194380118Reel 13" Q1/T1Order product
HEF4894BTHEF4894BT,112935194380112Bulk PackOrder product

Sample

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Sample orders normally take 2-4 days for delivery.

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