Octal bus transceiver; 3-state

The 74AHC245; 74AHCT245 is a high-speed Si-gate CMOS device.

The 74AHC245; 74AHCT245 is an octal transceiver featuring non-inverting 3-state bus compatible outputs in both send and receive directions.

The 74AHC245; 74AHCT245 features an output enable input (OE), for easy cascading, and a send and receive direction control input (DIR).

OE controls the outputs so that the buses are effectively isolated.


  • Balanced propagation delays
  • All inputs have Schmitt-trigger actions
  • Inputs accept voltages higher than VCC
  • Input levels:
    • For 74AHC245: CMOS level
    • For 74AHCT245: TTL level
  • ESD protection:
    • HBM EIA/JESD22-A114E exceeds 2000 V
    • MM EIA/JESD22-A115-A exceeds 200 V
    • CDM EIA/JESD22-C101C exceeds 1000 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C


Type numberProduct statusVCC(A) (V)VCC(B) (V)Logic switching levelsOutput drive capabilitytpd (ns)No of bitsfmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHC245BQProduction2.0 - 5.5n.a.CMOS+/- 83.5860low-40~125757.147DHVQFN20
74AHC245DProduction2.0 - 5.5n.a.CMOS+/- 83.5860low-40~1258325.659SO20
74AHC245PWProduction2.0 - 5.5n.a.CMOS+/- 83.5860low-40~125994.343.3TSSOP20
74AHCT245APWProduction4.5 - 5.5n.a.TTL+/- 83.0860low-40~1251014.745TSSOP20
74AHCT245BQProduction4.5 - 5.5n.a.TTL+/- 85.0860low-40~125757.147DHVQFN20
74AHCT245DProduction4.5 - 5.5n.a.TTL+/- 85.0860low-40~1258325.659SO20
74AHCT245PWProduction4.5 - 5.5n.a.TTL+/- 85.0860low-40~125994.343.3TSSOP20


Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT764-1Reel 7" Q1/T1ActiveAHC24574AHC245BQ,115
( 9352 891 07115 )
SOT163-1Reel 13" Q1/T1Active74AHC245D74AHC245D,118
( 9352 620 03118 )
Bulk PackActive74AHC245D74AHC245D,112
( 9352 620 03112 )
Reel 13" Q1/T1ActiveAHC24574AHC245PW,118
( 9352 620 05118 )
Bulk PackActiveAHC24574AHC245PW,112
( 9352 620 05112 )
Reel 13" Q1/T1ActiveStandard Marking74AHCT245APWJ
( 9353 078 76118 )
SOT764-1Reel 7" Q1/T1ActiveAHCT24574AHCT245BQ,115
( 9352 891 08115 )
SOT163-1Reel 13" Q1/T1Active74AHCT245D74AHCT245D,118
( 9352 619 60118 )
Bulk PackActive74AHCT245D74AHCT245D,112
( 9352 619 60112 )
Reel 13" Q1/T1ActiveAHCT24574AHCT245PW,118
( 9352 619 62118 )
Bulk PackActiveAHCT24574AHCT245PW,112
( 9352 619 62112 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74AHC245BQ74AHC245BQ,11574AHC245BQAlways Pb-free84.96.621.51E811
74AHC245D74AHC245D,11874AHC245Dweek 30, 200484.96.621.51E811
74AHC245D74AHC245D,11274AHC245Dweek 30, 200484.96.621.51E811
74AHC245PW74AHC245PW,11874AHC245PWweek 7, 200584.96.621.51E811
74AHC245PW74AHC245PW,11274AHC245PWweek 7, 200584.96.621.51E811
74AHCT245APW74AHCT245APWJ74AHCT245APWAlways Pb-free11
74AHCT245BQ74AHCT245BQ,11574AHCT245BQAlways Pb-free84.96.621.51E811
74AHCT245D74AHCT245D,11874AHCT245Dweek 30, 200484.96.621.51E811
74AHCT245D74AHCT245D,11274AHCT245Dweek 30, 200484.96.621.51E811
74AHCT245PW74AHCT245PW,11874AHCT245PWweek 7, 200584.96.621.51E811
74AHCT245PW74AHCT245PW,11274AHCT245PWweek 7, 200584.96.621.51E811
Quality and reliability disclaimer

Documentation (13)

File nameTitleTypeDate
74AHC_AHCT245Octal bus transceiver; 3-stateData sheet2017-07-20
ahct245ahct245 IBIS modelIBIS model2013-04-07
ahc245ahc245 IBIS modelIBIS model2013-04-07
nexperia_selection_guide_2019_201901Selection guide 2019. Discretes, Logic and MOSFETsSelection guide2018-12-12
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
SOT360-1_118TSSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-15
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
SOT163-1_115Tape reel SMD; standard product orientation 12NC ending 115Packing2013-04-25
SOT163-1_118SO20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-15
SOT163-1_518SO20; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518Packing2014-12-16
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


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
ahct245ahct245 IBIS modelIBIS model2013-04-07
ahc245ahc245 IBIS modelIBIS model2013-04-07


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