74HC373-Q100; 74HCT373-Q100

Octal D-type transparent latch; 3-state

The 74HC373-Q100; 74HCT373-Q100 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL. It is specified in compliance with JEDEC standard no. 7A.

The 74HC373-Q100; 74HCT373-Q100 is an octal D-type transparent latch featuring separate D-type inputs for each latch and 3-state outputs for bus-oriented applications. A latch enable (LE) input and an output enable (OE) input are common to all latches.

The 74HC373-Q100; 74HCT373-Q100 consists of eight D-type transparent latches with 3-state true outputs. When LE is HIGH, data at the Dn inputs enters the latches. In this condition the latches are transparent, i.e. a latch output changes state each time its corresponding D input changes.

When LE is LOW, the latches store the information that was present at the D inputs a set-up time preceding the HIGH-to-LOW transition of LE. When OE is LOW, the contents of the 8 latches are available at the outputs. When OE is HIGH, the outputs go to the highimpedance OFF-state. Operation of the OE input does not affect the state of the latches.

The 74HC373-Q100; 74HCT373-Q100 is functionally identical to:

  • 74HC573-Q100; 74HCT573-Q100: but different pin arrangement

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
  • Input levels:
    • For 74HC373-Q100: CMOS level
    • For 74HCT373-Q100: TTL level
  • 3-state non-inverting outputs for bus-oriented applications
  • Common 3-state output enable input
  • Functionally identical to the 74HC573-Q100; 74HCT573-Q100
  • 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)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC373BQ-Q100Production2.0 - 6.0CMOS± 7.8128low-40~125789.150DHVQFN20
74HC373D-Q100Production2.0 - 6.0CMOS± 7.8128low-40~1258527.361SO20
74HC373PW-Q100Production2.0 - 6.0CMOS± 7.8128low-40~1251014.645TSSOP20
74HCT373BQ-Q100Production4.5 - 5.5TTL± 6148low-40~125789.150DHVQFN20
74HCT373D-Q100Production4.5 - 5.5TTL± 6148low-40~1258527.361SO20
74HCT373PW-Q100Production4.5 - 5.5TTL± 6148low-40~1251014.645TSSOP20


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT764-1Reel 7" Q1/T1ActiveHC373BQ74HC373BQ-Q100,115
( 9352 990 34115 )
SOT163-1Reel 13" Q1/T1Active74HC373D74HC373D-Q100,118
( 9352 990 35118 )
Reel 13" Q1/T1ActiveHC37374HC373PW-Q100,118
( 9352 990 36118 )
SOT764-1Reel 7" Q1/T1ActiveHCT373BQ74HCT373BQ-Q100,11
( 9352 990 37115 )
SOT163-1Reel 13" Q1/T1Active74HCT373D74HCT373D-Q100,118
( 9352 990 38118 )
Reel 13" Q1/T1ActiveHCT37374HCT373PW-Q100,11
( 9352 990 39118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRMSLMSL leadfree
74HC373BQ-Q10074HC373BQ-Q100,11574HC373BQ-Q100Always Pb-free84.911
74HC373D-Q10074HC373D-Q100,11874HC373D-Q100Always Pb-free84.911
74HC373PW-Q10074HC373PW-Q100,11874HC373PW-Q100Always Pb-free84.911
74HCT373BQ-Q10074HCT373BQ-Q100,1174HCT373BQ-Q100Always Pb-free84.911
74HCT373D-Q10074HCT373D-Q100,11874HCT373D-Q100Always Pb-free84.911
74HCT373PW-Q10074HCT373PW-Q100,1174HCT373PW-Q100Always Pb-free84.911
Quality and reliability disclaimer

Documentation (8)

File nameTitleTypeDate
74HC_HCT373_Q100Octal D-type transparent latch; 3-stateData sheet2017-05-03
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
hchc Spice modelSPICE model2013-05-06
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 information2020-04-21
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
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
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


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
hchc Spice modelSPICE model2013-05-06


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