74HC573-Q100; 74HCT573-Q100

Octal D-type transparent latch; 3-state

The 74HC573-Q100; 74HCT573-Q100 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.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Input levels:
    • For 74HC573-Q100: CMOS level
    • For 74HCT573-Q100: 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
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2 000 V
    • MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)
  • DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC573BQ-Q100Production2.0 - 6.0CMOS± 7.8148low-40~125799.450DHVQFN20
74HC573D-Q100Production2.0 - 6.0CMOS± 7.8148low-40~1258527.561SO20
74HC573PW-Q100Production2.0 - 6.0CMOS± 7.8148low-40~1251004.644.9TSSOP20
74HCT573BQ-Q100Production4.5 - 5.5TTL± 6178low-40~125799.450DHVQFN20
74HCT573D-Q100Production4.5 - 5.5TTL± 6178low-40~1258527.561SO20
74HCT573PW-Q100Production4.5 - 5.5TTL± 6178low-40~1251004.644.9TSSOP20


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveHC57374HC573BQ-Q100,115
( 9352 988 63115 )
Reel 13" Q1/T1Active74HC573D74HC573D-Q100,118
( 9352 988 64118 )
Reel 13" Q1/T1ActiveHC57374HC573PW-Q100,118
( 9352 988 65118 )
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveHCT57374HCT573BQ-Q100,11
( 9352 988 66115 )
Reel 13" Q1/T1Active74HCT573D74HCT573D-Q100,118
( 9352 988 67118 )
Reel 13" Q1/T1ActiveHCT57374HCT573PW-Q100,11
( 9352 988 68118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC573BQ-Q10074HC573BQ-Q100,11574HC573BQ-Q100Always Pb-free29.90.91.11E911
74HC573D-Q10074HC573D-Q100,11874HC573D-Q100Always Pb-free29.90.91.11E911
74HC573PW-Q10074HC573PW-Q100,11874HC573PW-Q100Always Pb-free29.90.91.11E911
74HCT573BQ-Q10074HCT573BQ-Q100,1174HCT573BQ-Q100Always Pb-free29.90.91.11E911
74HCT573D-Q10074HCT573D-Q100,11874HCT573D-Q100Always Pb-free29.90.91.11E911
74HCT573PW-Q10074HCT573PW-Q100,1174HCT573PW-Q100Always Pb-free29.90.91.11E911
Quality and reliability disclaimer

Documentation (10)

File nameTitleTypeDate
74HC_HCT573_Q100Octal D-type transparent latch; 3-stateData sheet2021-02-10
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
hc57374HC573 IBIS modelIBIS model2020-12-07
hct57374HCT573 IBIS modelIBIS model2020-12-08
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
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 bodyPackage information2021-08-17
SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyPackage information2020-04-21
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08


If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.


File nameTitleTypeDate
hc57374HC573 IBIS modelIBIS model2020-12-07
hct57374HCT573 IBIS modelIBIS model2020-12-08


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