74HC594; 74HCT594

8-bit shift register with output register

The 74HC594; 74HCT594 is an 8-bit serial-in/serial or parallel-out shift register with a storage register. Separate clock and reset inputs are provided on both shift and storage registers. The device features a serial input (DS) and a serial output (Q7S) to enable cascading. Data is shifted on the LOW-to-HIGH transitions of the SHCP input, and the data in the shift register is transferred to the storage register on a LOW-to-HIGH transition of the STCP input. If both clocks are connected together, the shift register will always be one clock pulse ahead of the storage register. A LOW level on one of the two register reset pins (SHR and STR) will clear the corresponding register. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features

  • Synchronous serial input and output
  • Complies with JEDEC standard No.7A
  • 8-bit parallel output
  • Shift and storage registers have independent direct clear and clocks
  • Independent clocks for shift and storage registers
  • 100 MHz (typical)
  • Input levels:
    • For 74HC594: CMOS level
    • For 74HCT594: TTL level
  • Multiple package options
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Target applications

  • Serial-to parallel data conversion
  • Remote control holding register

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
74HC594DProduction2.0 - 6.0CMOS± 7.8141098low-40~125866.945SO16
74HC594DB
NRND
Not for design in2.0 - 6.0CMOS+/- 7.8141098low-40~12514842.0SSOP16
74HCT594DProduction4.5 - 5.5TTL± 6151008low-40~125866.945.1SO16
74HCT594DB
NRND
Not for design in4.5 - 5.5TTL+/- 6151008low-40~12514842.0SSOP16

Package

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC594D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Active74HC594D74HC594D,118
( 9350 433 80118 )
Bulk PackActive74HC594D74HC594D,112
( 9350 433 80112 )
74HC594DB
NRND

SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC59474HC594DB,118
( 9351 901 60118 )
Bulk PackActiveHC59474HC594DB,112
( 9351 901 60112 )
74HCT594D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Active74HCT594D74HCT594D,118
( 9350 433 90118 )
Bulk PackActive74HCT594D74HCT594D,112
( 9350 433 90112 )
74HCT594DB
NRND

SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT59474HCT594DB,118
( 9352 809 39118 )
Bulk PackActiveHCT59474HCT594DB,112
( 9352 809 39112 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC594D74HC594D,11874HC594Dweek 30, 200484.96.621.51E811
74HC594D74HC594D,11274HC594Dweek 30, 200484.96.621.51E811
74HC594DB
NRND
74HC594DB,11874HC594DBweek 13, 200511
74HC594DB
NRND
74HC594DB,11274HC594DBweek 13, 200511
74HCT594D74HCT594D,11874HCT594Dweek 6, 200484.96.621.51E811
74HCT594D74HCT594D,11274HCT594Dweek 6, 200484.96.621.51E811
74HCT594DB
NRND
74HCT594DB,11874HCT594DBAlways Pb-free11
74HCT594DB
NRND
74HCT594DB,11274HCT594DBAlways Pb-free11
Quality and reliability disclaimer

Documentation (12)

File nameTitleTypeDate
74HC_HCT5948-bit shift register with output registerData sheet2017-03-17
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
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
SOT109-1plastic, 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
SOT109-1_118SO16; Reel pack for SMD, 13"; Q1/T1 product orientationPacking2020-02-14
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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