74AHC573-Q100; 74AHCT573-Q100

Octal D-type transparant latch; 3-state

The 74AHC573-Q100; 74AHCT573-Q100 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7A.

The 74AHC573-Q100; 74AHCT573-Q100 consists of eight D-type transparent latches featuring separate D-type inputs for each latch and 3-state true outputs for bus oriented applications. A latch enable input (LE) and an output enable input (OE) are common to all latches.

When pin LE is HIGH, data at the Dn inputs enters the latches. In this condition the latches are transparent, i.e. a latch output will change state each time its corresponding Dn input changes. When pin LE is LOW, the latches store the information that is present at the Dn inputs, after a set-up time preceding the HIGH-to-LOW transition of LE.

When pin OE is LOW, the contents of the 8 latches are available at the outputs. When pin OE is HIGH, the outputs go to the high-impedance OFF-state. Operation of the OE input does not affect the state of the latches.

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


  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Balanced propagation delays
  • All inputs have a Schmitt trigger action
  • Common 3-state output enable input
  • Inputs accept voltages higher than VCC
  • 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)
  • Multiple package options

Target applications


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 numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT764-1Reel 7" Q1/T1ActiveAHC57374AHC573BQ-Q100X
( 9353 003 15115 )
SOT163-1Reel 13" Q1/T1Active74AHC573D74AHC573D-Q100J
( 9353 003 16118 )
Reel 13" Q1/T1ActiveAHC57374AHC573PW-Q100J
( 9353 003 17118 )
SOT764-1Reel 7" Q1/T1ActiveAHCT57374AHCT573BQ-Q100X
( 9353 003 18115 )
SOT163-1Reel 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 dateEFRMSLMSL leadfree
74AHC573BQ-Q10074AHC573BQ-Q100X74AHC573BQ-Q100Always Pb-free84.911
74AHC573D-Q10074AHC573D-Q100J74AHC573D-Q100Always Pb-free84.911
74AHC573PW-Q10074AHC573PW-Q100J74AHC573PW-Q100Always Pb-free84.911
74AHCT573BQ-Q10074AHCT573BQ-Q100X74AHCT573BQ-Q100Always Pb-free84.911
74AHCT573D-Q10074AHCT573D-Q100J74AHCT573D-Q100Always Pb-free84.911
74AHCT573PW-Q10074AHCT573PW-Q100J74AHCT573PW-Q100Always Pb-free84.911
Quality and reliability disclaimer

Documentation (12)

File nameTitleTypeDate
74AHC_AHCT573_Q100Octal D-type transparant latch; 3-stateData sheet2017-05-03
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 bodyOutline drawing2018-11-14
SOT764-1_115DHVQFN20; Reel pack for SMD, 7''; Q1/T1 product orientationPacking2020-02-13
SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyOutline drawing2018-10-18
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT360-1_118TSSOP20; Reel pack for SMD, 13''; Q1/T1 product orientationPacking2020-02-26
SOT163-1_118SO20; Reel pack for SMD, 13"; Q1/T1 product orientationPacking2020-02-14
SOT163-1_115Tape reel SMD; standard product orientation 12NC ending 115Packing2013-04-25
SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyOutline drawing2018-10-18
SOT163-1_518SO20; Reel dry pack for SMD, 13"; Q1/T1 product orientationPacking2020-02-14


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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