74HC594DB 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
74HC594DB 74HC594DB,118 935190160118 SOT338-1 Order product
74HC594DB 74HC594DB,112 935190160112 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
74HC594DB
NRND
Not for design in2.0 - 6.0CMOS+/- 7.8141098low-40~12514842.0SSOP16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74HC594DB
NRND
74HC594DB,118
( 9351 901 60118 )
ActiveHC594
SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1
74HC594DB,112
( 9351 901 60112 )
ActiveHC594Bulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
74HC594DB
NRND
74HC594DB,11874HC594DB11
74HC594DB
NRND
74HC594DB,11274HC594DB11
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
74HC594DB74HC594DB,118935190160118Reel 13" Q1/T1Order product
74HC594DB74HC594DB,112935190160112Bulk PackOrder product

Sample

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