74HCT594DB NRND

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.

Not recommended for new designs (NRND), click here for the alternative product.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT594DB 74HCT594DB,118 935280939118 SOT338-1 Order product
74HCT594DB 74HCT594DB,112 935280939112 SOT338-1 Order product

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)Package name
74HCT594DB
NRND
Not for design in4.5 - 5.5TTL+/- 6151008low-40~12514842.0SSOP16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74HCT594DB
NRND
74HCT594DB,118
( 9352 809 39118 )
ActiveHCT594
SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1
74HCT594DB,112
( 9352 809 39112 )
ActiveHCT594Bulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
74HCT594DB
NRND
74HCT594DB,118Not available11
74HCT594DB
NRND
74HCT594DB,112Not available11
Quality and reliability disclaimer

Documentation (6)

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
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
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

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HCT594DB74HCT594DB,118935280939118Reel 13" Q1/T1Order product
74HCT594DB74HCT594DB,112935280939112Bulk PackOrder product

Sample

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