Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC power devices

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

74AHC244; 74AHCT244

Octal buffer/line driver; 3-state

The 74AHC244; 74AHCT244 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 are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments.

Features and benefits

  • 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

  • Input levels:

    • For 74AHC244: CMOS level

    • For 74AHCT244: TTL level

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level A

  • Multiple package options

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type number VCC (V) Logic switching levels Output drive capability (mA) fmax (MHz) Nr of bits Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Rth(j-c) (K/W) Package name
74AHC244BQ 2.0 - 5.5 CMOS ± 8 60 8 low -40~125 78 50 DHVQFN20
74AHC244D 2.0 - 5.5 CMOS ± 8 60 8 low -40~125 85 26.8 61 SO20
74AHC244PW 2.0 - 5.5 CMOS ± 8 60 8 low -40~125 100 4.5 44.7 TSSOP20
74AHCT244BQ 4.5 - 5.5 TTL ± 8 60 8 low -40~125 78 50 DHVQFN20
74AHCT244D 4.5 - 5.5 TTL ± 8 60 8 low -40~125 85 26.8 61 SO20
74AHCT244PW 4.5 - 5.5 TTL ± 8 60 8 low -40~125 100 4.5 44.7 TSSOP20

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74AHC244BQ 74AHC244BQ,115
(935285537115)		 Active AHC244 SOT764-1
DHVQFN20
(SOT764-1) 		SOT764-1 SOT764-1_115
74AHC244D 74AHC244D,118
(935262001118)		 Active 74AHC244D SOT163-1
SO20
(SOT163-1) 		SOT163-1 WAVE_BG-BD-1
SOT163-1_118
74AHC244PW 74AHC244PW,118
(935262002118)		 Active AHC244 SOT360-1
TSSOP20
(SOT360-1) 		SOT360-1 SSOP-TSSOP-VSO-WAVE
SOT360-1_118
74AHCT244BQ 74AHCT244BQ/GX
(935693203115)		 Development AHCT244 SOT764-1
DHVQFN20
(SOT764-1) 		SOT764-1 SOT764-1_115
74AHCT244BQ,115
(935285541115)		 Active AHCT244 SOT764-1_115
74AHCT244D 74AHCT244D,118
(935261957118)		 Active 74AHCT244D SOT163-1
SO20
(SOT163-1) 		SOT163-1 WAVE_BG-BD-1
SOT163-1_118
74AHCT244PW 74AHCT244PW/GJ
(935693205118)		 Development AHCT244 SOT360-1
TSSOP20
(SOT360-1) 		SOT360-1 SSOP-TSSOP-VSO-WAVE
SOT360-1_118
74AHCT244PW/G400J
(935693206118)		 Development AHCT244 SOT360-1_118
74AHCT244PW,118
(935261959118)		 Active AHCT244 SOT360-1_118

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
74AHC244BQ 74AHC244BQ,115 74AHC244BQ rohs rhf rhf
74AHC244D 74AHC244D,118 74AHC244D rohs rhf rhf
74AHC244PW 74AHC244PW,118 74AHC244PW rohs rhf rhf
74AHCT244BQ 74AHCT244BQ/GX 74AHCT244BQ rohs rhf rhf
74AHCT244BQ 74AHCT244BQ,115 74AHCT244BQ rohs rhf rhf
74AHCT244D 74AHCT244D,118 74AHCT244D rohs rhf rhf
74AHCT244PW 74AHCT244PW/GJ 74AHCT244PW rohs rhf rhf
74AHCT244PW 74AHCT244PW/G400J 74AHCT244PW rohs rhf rhf
74AHCT244PW 74AHCT244PW,118 74AHCT244PW rohs rhf rhf
Quality and reliability disclaimer

Documentation (16)

File name Title Type Date
74AHC_AHCT244 Octal buffer/line driver; 3-state Data sheet 2023-09-20
AN263 Power considerations when using CMOS and BiCMOS logic devices Application note 2023-02-07
AN90063 Questions about package outline drawings Application note 2026-06-17
SOT764-1 3D model for products with SOT764-1 package Design support 2019-10-03
SOT163-1 3D model for products with SOT163-1 package Design support 2020-01-22
SOT360-1 3D model for products with SOT360-1 package Design support 2020-01-22
ahc244 ahc244 IBIS model IBIS model 2013-04-08
ahct244 ahct244 IBIS model IBIS model 2013-04-08
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
DHVQFN20_SOT764-1_mk plastic, dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 2.5 mm x 4.5 mm x 0.85 mm body Marcom graphics 2017-01-28
TSSOP20_SOT360-1_mk plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm body Marcom graphics 2017-01-28
SOT764-1 plastic, 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 body Package information 2022-06-21
SOT163-1 plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body Package information 2024-11-15
SOT360-1 plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.2 mm body Package information 2024-11-15
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08
SSOP-TSSOP-VSO-WAVE Footprint for wave soldering Wave soldering 2009-10-08

Support

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Models

File name Title Type Date
SOT764-1 3D model for products with SOT764-1 package Design support 2019-10-03
SOT163-1 3D model for products with SOT163-1 package Design support 2020-01-22
SOT360-1 3D model for products with SOT360-1 package Design support 2020-01-22
ahc244 ahc244 IBIS model IBIS model 2013-04-08
ahct244 ahct244 IBIS model IBIS model 2013-04-08

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