Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

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,115
(935285541115)		 Active AHCT244 SOT764-1
DHVQFN20
(SOT764-1) 		SOT764-1 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,118
(935261959118)		 Active AHCT244 SOT360-1
TSSOP20
(SOT360-1) 		SOT360-1 SSOP-TSSOP-VSO-WAVE
SOT360-1_118

All type numbers in the table below are discontinued.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74AHC244PW 74AHC244PW,112
(935262002112)		 Withdrawn / End-of-life AHC244 SOT360-1
TSSOP20
(SOT360-1) 		SOT360-1 SSOP-TSSOP-VSO-WAVE
Not available

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,115 74AHCT244BQ rohs rhf rhf
74AHCT244D 74AHCT244D,118 74AHCT244D rohs rhf rhf
74AHCT244PW 74AHCT244PW,118 74AHCT244PW rohs rhf rhf

All type numbers in the table below are discontinued.

Type number Orderable part number Chemical content RoHS RHF-indicator
74AHC244PW 74AHC244PW,112 74AHC244PW 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 2025-10-22
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

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 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

Ordering, pricing & availability

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