74HC299: 8-bit universal shift register; 3-state

The 74HC299 is an 8-bit universal shift register with 3-state outputs. It contains eight edge-triggered D-type flip-flops and the interstage logic necessary to perform synchronous shift-right, shift-left, parallel load and hold operations. The type of operation is determined by the mode select inputs S0 and S1. Pins I/O0 to I/O7 are flip-flop 3-state buffer outputs which allow them to operate as data inputs in parallel load mode. The serial outputs Q0 and Q7 are used for expansion in serial shifting of longer words. A LOW signal on the asynchronous master reset input MR overrides the Sn and clock CP inputs and resets the flip-flops. All other state changes are initiated by the rising edge of the clock pulse. Inputs can change when the clock is either state, provided that the recommended set-up and hold times are observed. A HIGH signal on the 3-state output enable inputs OE1 or OE2 disables the 3-state buffers and the I/On outputs assume a high-impedance OFF-state. In this condition, the shift, hold, load and reset operations can still occur. The 3-state buffers are also disabled by HIGH signals on both S0 and S1, when in preparation for a parallel load operation. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

74HC299: Product Block Diagram
74HC299: Block Diagram
Outline 3d SOT339-1
Data Sheets (1)
Name/DescriptionModified Date
8-bit universal shift register; 3-state (REV 4.0) PDF (209.0 kB) 74HC299 [English]16 Mar 2016
Application Notes (2)
Name/DescriptionModified Date
Live Insertion Aspects of Philips Logic Families (REV 1.0) PDF (73.0 kB) AN252 [English]13 Mar 2013
Pin FMEA 74HC/74HCT family (REV 1.0) PDF (51.0 kB) AN11044 [English]16 Mar 2011
Users Guides (1)
Name/DescriptionModified Date
HC/T User Guide (REV 1.0) PDF (508.0 kB) HCT_USER_GUIDE [English]01 Nov 1997
Package Information (3)
Name/DescriptionModified Date
plastic small outline package; 20 leads; body width 7.5 mm (REV 1.0) PDF (335.0 kB) SOT163-1 [English]08 Feb 2016
plastic shrink small outline package; 20 leads; body width 5.3 mm (REV 1.0) PDF (325.0 kB) SOT339-1 [English]08 Feb 2016
plastic thin shrink small outline package; 20 leads; body width 4.4 mm (REV 1.0) PDF (304.0 kB) SOT360-1 [English]08 Feb 2016
Packing (2)
Name/DescriptionModified Date
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code... (REV 1.0) PDF (204.0 kB) SOT339-1_118 [English]02 Oct 2015
TSSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.0) PDF (225.0 kB) SOT360-1_118 [English]15 Apr 2013
Supporting Information (3)
Name/DescriptionModified Date
Reflow Soldering Profile (REV 1.0) PDF (34.0 kB) REFLOW_SOLDERING_PROFILE [English]30 Sep 2013
Wave Soldering Profile (REV 1.0) PDF (20.0 kB) WAVE_SOLDERING_PROFILE [English]30 Sep 2013
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English]08 Oct 2009
Ordering Information
ProductStatus
74HC299DActive
74HC299DBActive
74HC299PWActive
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateEFRIFR(FIT)MTBF(hour)MSLMSL LF
74HC299DSOT163-1Reflow_Soldering_Profile Wave_Soldering_Profile
Reflow_Soldering_Profile Wave_Soldering_Profile
Reel 13" Q1/T1 CECCActive74HC299D,653 (9337 135 40653)74HC299D74HC299Dweek 4, 200484.96.621.51E811
Bulk Pack, CECCActive74HC299D,652 (9337 135 40652)74HC299D74HC299Dweek 4, 200484.96.621.51E811
74HC299DBSOT339-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1Active74HC299DB,118 (9351 898 90118)HC29974HC299DBweek 17, 200584.96.621.51E811
Bulk PackActive74HC299DB,112 (9351 898 90112)HC29974HC299DBweek 17, 200584.96.621.51E811
74HC299PWSOT360-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1Discontinued74HC299PW,118 (9352 869 24118)HC29974HC299PWAlways Pb-free84.96.621.51E811
Bulk PackActive74HC299PW,112 (9352 869 24112)HC29974HC299PWAlways Pb-free84.96.621.51E811
8-bit universal shift register; 3-state 74HC299PW
Live Insertion Aspects of Philips Logic Families 74HC_T_245_Q100
Pin FMEA 74HC/74HCT family 74HC_T_597_Q100
HC/T User Guide 74HCU04PW
SOT163-1 LPC1112FD20
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
plastic shrink small outline package; 20 leads; body width 5.3 mm 74LVC373A_Q100
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code... 74LVC373A_Q100
SOT360-1 LPC1112FDH20
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
Reel 13" Q1/T1 LPC824M201JDH20
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