74HC(T)166

8-bit parallel-in/serial-out shift register

The 74HC166; 74HCT166 is an 8-bit serial or parallel-in/serial-out shift register. The device features a serial data input (DS), eight parallel data inputs (D0 to D7) and a serial output (Q7). When the parallel enable input (PE) is LOW, the data from D0 to D7 is loaded into the shift register on the next LOW‑to‑HIGH transition of the clock input (CP). When PE is HIGH, data enters the register serially at DS with each LOW‑to‑HIGH transition of CP. When the clock enable input (CE) is LOW data is shifted on the LOW‑to‑HIGH transitions of CP. A HIGH on CE disables the CP input. Inputs include clamp diodes which enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features

  • Synchronous parallel-to-serial applications
  • Synchronous serial input for easy expansion
  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC166: CMOS level
    • For 74HCT166: TTL level
  • ESD protection:
    • HBM JESD22-A114E exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options
  • 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)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC166DProduction2.0 - 6.0CMOS± 5.215638low-40~125741.232SO16
74HC166DB
NRND
Not for design in2.0 - 6.0CMOS+/- 5.215638low-40~12514842.0SSOP16
74HC166PWProduction2.0 - 6.0CMOS± 5.215638low-40~1251081.035.9TSSOP16
74HCT166DProduction4.5 - 5.5TTL± 423508low-40~125762.134SO16
74HCT166DB
NRND
Not for design in4.5 - 5.5TTL+/- 4.023508low-40~12514842.0SSOP16

Package

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC166D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC166D74HC166D,653
( 9337 145 50653 )
Bulk Pack, CECCActive74HC166D74HC166D,652
( 9337 145 50652 )
74HC166DB
NRND

SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC16674HC166DB,118
( 9351 892 40118 )
Bulk PackActiveHC16674HC166DB,112
( 9351 892 40112 )
74HC166PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC16674HC166PW,118
( 9351 889 60118 )
Bulk PackActiveHC16674HC166PW,112
( 9351 889 60112 )
74HCT166D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HCT166D74HCT166D,653
( 9337 150 30653 )
Bulk Pack, CECCActive74HCT166D74HCT166D,652
( 9337 150 30652 )
74HCT166DB
NRND

SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT16674HCT166DB,118
( 9351 897 00118 )
Bulk PackActiveHCT16674HCT166DB,112
( 9351 897 00112 )

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

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HCT166D/S420
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Withdrawn / End-of-lifeStandard Marking74HCT166D/S420,118
( 9352 612 13118 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HCT166D/S420935261213118

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC166D74HC166D,65374HC166Dweek 6, 200484.96.621.51E811
74HC166D74HC166D,65274HC166Dweek 6, 200484.96.621.51E811
74HC166DB
NRND
74HC166DB,11874HC166DBweek 12, 200511
74HC166DB
NRND
74HC166DB,11274HC166DBweek 12, 200511
74HC166PW74HC166PW,11874HC166PWweek 10, 200584.96.621.51E811
74HC166PW74HC166PW,11274HC166PWweek 10, 200584.96.621.51E811
74HCT166D74HCT166D,65374HCT166Dweek 6, 200484.96.621.51E811
74HCT166D74HCT166D,65274HCT166Dweek 6, 200484.96.621.51E811
74HCT166DB
NRND
74HCT166DB,11874HCT166DBweek 12, 200511
74HCT166DB
NRND
74HCT166DB,11274HCT166DBweek 12, 200511

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

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HCT166D/S42074HCT166D/S420,118notAvailableweek 47, 200584.96.621.51E811
Quality and reliability disclaimer

Documentation (19)

File nameTitleTypeDate
74HC_HCT1668-bit parallel-in, serial-out shift registerData sheet2017-03-30
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
nexperia_selection_guide_2019_201901Selection guide 2019. Discretes, Logic and MOSFETsSelection guide2018-12-12
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT109-1_431SO16; Reel sulfur barrier pack, SMD, 13" Q1/T1 standard product orientation Orderable part number ending ,431 or Z Ordering code (12NC) ending 431Packing2016-08-25
SOT109-1_118SO16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-24
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm bodyOutline drawing2018-10-18
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT403-1_623TSSOP16; Reel pack; SMD, 13"; Q1 Standard product orientation; Orderable part number ending, 623 or HL; Ordering code (12NC) ending 623Packing2013-05-15
SOT403-1_118TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-08
SOT403-1_128TSSOP16; Reel pack; SMD, 13", Turned Q4/T2 180 deg product orientation Orderable part number ending ,128 or HP Ordering code (12NC) ending 128Packing2014-10-14
SOT403-1_653TSSOP16; Reel pack; SMD, 13"; Q1 Standard product orientation; Orderable part number ending, 653 or HL; Ordering code (12NC) ending 653Packing2013-05-15
SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyOutline drawing2018-11-14
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT338-1_431SSOP16; Reel pack, SMD, 13" Q1/T1 standard product orientation Orderable part number ending ,431 or Z Ordering code (12NC) ending 431Packing2016-10-05
SOT338-1plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyOutline drawing2018-10-18
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08

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