74AHC573-Q100; 74AHCT573-Q100

Octal D-type transparent latch; 3-state

The 74AHC573-Q100; 74AHCT573-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 are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments.

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
  • Wide supply voltage range from 2.0 V to 5.5 V
  • Balanced propagation delays
  • All inputs have Schmitt-trigger action
  • Overvoltage tolerant inputs to 5.5 V
  • High noise immunity
  • CMOS low power dissipation
  • Common 3-state output enable input
  • Input levels:
    • For 74AHC573-Q100: CMOS input level
    • For 74AHCT573-Q100: TTL input level
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V (C = 200 pf, R = 0 Ω)
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
  • Multiple package options
  • 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)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHC573BQ-Q100Production2.0 - 5.5CMOS± 84.2low-40~125778.148DHVQFN20
74AHC573D-Q100Production2.0 - 5.5CMOS± 84.2low-40~1258426.460SO20
74AHC573PW-Q100Production2.0 - 5.5CMOS± 84.2low-40~1251004.444TSSOP20
74AHCT573BQ-Q100Production4.5 - 5.5TTL± 83.9low-40~125778.148DHVQFN20
74AHCT573D-Q100Production4.5 - 5.5TTL± 83.9low-40~1258426.460SO20
74AHCT573PW-Q100Production4.5 - 5.5TTL± 83.9low-40~1251004.444TSSOP20


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveAHC57374AHC573BQ-Q100X
( 9353 003 15115 )
Reel 13" Q1/T1Active74AHC573D74AHC573D-Q100J
( 9353 003 16118 )
Reel 13" Q1/T1ActiveAHC57374AHC573PW-Q100J
( 9353 003 17118 )
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveAHCT57374AHCT573BQ-Q100X
( 9353 003 18115 )
Reel 13" Q1/T1Active74AHCT573D74AHCT573D-Q100J
( 9353 003 19118 )
Reel 13" Q1/T1ActiveAHCT57374AHCT573PW-Q100J
( 9353 003 21118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74AHC573BQ-Q10074AHC573BQ-Q100X74AHC573BQ-Q100Always Pb-free29.90.91.11E911
74AHC573D-Q10074AHC573D-Q100J74AHC573D-Q100Always Pb-free29.90.91.11E911
74AHC573PW-Q10074AHC573PW-Q100J74AHC573PW-Q100Always Pb-free29.90.91.11E911
74AHCT573BQ-Q10074AHCT573BQ-Q100X74AHCT573BQ-Q100Always Pb-free29.90.91.11E911
74AHCT573D-Q10074AHCT573D-Q100J74AHCT573D-Q100Always Pb-free29.90.91.11E911
74AHCT573PW-Q10074AHCT573PW-Q100J74AHCT573PW-Q100Always Pb-free29.90.91.11E911
Quality and reliability disclaimer

Documentation (8)

File nameTitleTypeDate
74AHC_AHCT573_Q100Octal D-type transparent latch; 3-stateData sheet2020-07-13
ahct573ahct573 IBIS modelIBIS model2013-04-07
ahc573ahc573 IBIS modelIBIS model2013-04-07
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
ahct573ahct573 IBIS modelIBIS model2013-04-07
ahc573ahc573 IBIS modelIBIS model2013-04-07


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