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74HC244BQ

Octal buffer/line driver; 3-state

The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HC244BQ 74HC244BQ,115 935273678115 SOT764-1 Order product

Features and benefits

  • Input levels:
    • For 74HC244: CMOS level
    • For 74HCT244: TTL level
  • Octal bus interface
  • Non-inverting 3-state outputs
  • Complies with JEDEC standard no. 7 A
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C

Applications

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)fmax (MHz)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC244BQProduction2.0 - 6.0CMOS± 7.8368low-40~125789.450DHVQFN20

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74HC244BQ74HC244BQ,115
( 9352 736 78115 )
ActiveHC244
DHVQFN20
(SOT764-1)
SOT764-1Reel 7” Q1/T1 or Q2/T3

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74HC244BQ74HC244BQ,11574HC244BQ84.96.621.51E811
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74HC_HCT244Octal buffer/line driver; 3-stateData sheet2019-09-27
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
D12_PC_sch_ver2_0-Design support1998-04-22
hchc Spice modelSPICE model2013-05-06
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31

Support

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.

Models

File nameTitleTypeDate
D12_PC_sch_ver2_0-Design support1998-04-22
hchc Spice modelSPICE model2013-05-06

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HC244BQ74HC244BQ,115935273678115Reel 7” Q1/T1 or Q2/T3Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.