74HCT573BQ

Octal D-type transparent latch; 3-state

The 74HC573; 74HCT573 is an 8-bit D-type transparent latch with 3-state outputs. The device features latch enable (LE) and output enable (OE) inputs. When LE is HIGH, data at the inputs enter the latches. In this condition the latches are transparent, a latch output will change each time its corresponding D-input changes. When LE is LOW the latches store the information that was present at the inputs a set-up time preceding the HIGH-to-LOW transition of LE. A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Operation of the OE input does not affect the state of the latches. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT573BQ 74HCT573BQ,115 935273732115 SOT764-1 Order product

Features

  • Input levels:
    • For 74HC573: CMOS level
    • For 74HCT573: TTL level
  • Inputs and outputs on opposite sides of package allowing easy interface with microprocessors
  • Useful as input or output port for microprocessors and microcomputers
  • 3-state non-inverting outputs for bus-oriented applications
  • Common 3-state output enable input
  • Multiple package options
  • Complies with JEDEC standard no. 7 A
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and from -40°C to +125 °C

Target applications

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)No of bitsPower dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HCT573BQProduction4.5 - 5.5TTL+/- 6178low-40~125799.450DHVQFN20

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74HCT573BQ74HCT573BQ,115
( 9352 737 32115 )
ActiveHCT573
DHVQFN20
(SOT764-1)
SOT764-1Reel 7" Q1/T1

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HCT573BQ74HCT573BQ,11574HCT573BQAlways Pb-free84.96.621.51E811
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74HC_HCT573Octal D-type transparent latch; 3-stateData sheet2017-03-17
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT764-1_115DHVQFN20; Reel pack; SMD, 7" Q1/T1 Standard product orientation Orderable part number ending ,115 or X Ordering code (12NC) ending 115Packing2013-04-23
SOT764-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm bodyOutline drawing2018-11-14

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HCT573BQ74HCT573BQ,115935273732115Reel 7" Q1/T1Order product

Sample

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