Features and benefits
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Wide supply voltage range from 2.0 V to 5.5 V
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Balanced propagation delays
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All inputs have Schmitt-trigger action
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Overvoltage tolerant inputs to 5.5 V
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High noise immunity
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CMOS low power dissipation
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Input levels:
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For 74AHC244: CMOS level
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For 74AHCT244: TTL level
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ESD protection:
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HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
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CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
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Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
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Multiple package options
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Specified from -40 °C to +85 °C and from -40 °C to +125 °C
Parametrics
Type number | Product status | 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 | Production | 2.0 - 5.5 | CMOS | ± 8 | 60 | 8 | low | -40~125 | 78 | 50 | DHVQFN20 |
74AHC244D | Production | 2.0 - 5.5 | CMOS | ± 8 | 60 | 8 | low | -40~125 | 85 | 61 | SO20 |
74AHC244PW | Production | 2.0 - 5.5 | CMOS | ± 8 | 60 | 8 | low | -40~125 | 100 | 44.7 | TSSOP20 |
74AHCT244BQ | Production | 4.5 - 5.5 | TTL | ± 8 | 60 | 8 | low | -40~125 | 78 | 50 | DHVQFN20 |
74AHCT244D | Production | 4.5 - 5.5 | TTL | ± 8 | 60 | 8 | low | -40~125 | 85 | 61 | SO20 |
74AHCT244PW | Production | 4.5 - 5.5 | TTL | ± 8 | 60 | 8 | low | -40~125 | 100 | 44.7 | TSSOP20 |
Package
Type number | Package | Package information | Reflow-/Wave soldering | Packing | Status | Marking | Orderable part number, (Ordering code (12NC)) |
---|---|---|---|---|---|---|---|
74AHC244BQ | ![]() DHVQFN20 (SOT764-1) | SOT764-1 | SOT764-1_115 | Active | AHC244 | 74AHC244BQ,115 ( 9352 855 37115 ) | |
74AHC244D | ![]() SO20 (SOT163-1) | SOT163-1 | WAVE_BG-BD-1 | SOT163-1_118 | Active | 74AHC244D | 74AHC244D,118 ( 9352 620 01118 ) |
74AHC244PW | ![]() TSSOP20 (SOT360-1) | SOT360-1 | SSOP-TSSOP-VSO-WAVE | SOT360-1_118 | Active | AHC244 | 74AHC244PW,118 ( 9352 620 02118 ) |
74AHCT244BQ | ![]() DHVQFN20 (SOT764-1) | SOT764-1 | SOT764-1_115 | Active | AHCT244 | 74AHCT244BQ,115 ( 9352 855 41115 ) | |
74AHCT244D | ![]() SO20 (SOT163-1) | SOT163-1 | WAVE_BG-BD-1 | SOT163-1_118 | Active | 74AHCT244D | 74AHCT244D,118 ( 9352 619 57118 ) |
74AHCT244PW | ![]() TSSOP20 (SOT360-1) | SOT360-1 | SSOP-TSSOP-VSO-WAVE | SOT360-1_118 | Active | AHCT244 | 74AHCT244PW,118 ( 9352 619 59118 ) |
The variants in the table below are discontinued. See the table Discontinuation information for more information.
Type number | Package | Package information | Reflow-/Wave soldering | Packing | Status | Marking | Orderable part number, (Ordering code (12NC)) |
---|---|---|---|---|---|---|---|
74AHC244D | ![]() SO20 (SOT163-1) | SOT163-1 | WAVE_BG-BD-1 | SOT163-1_112 | Withdrawn / End-of-life | 74AHC244D | 74AHC244D,112 ( 9352 620 01112 ) |
74AHC244PW | ![]() TSSOP20 (SOT360-1) | SOT360-1 | SSOP-TSSOP-VSO-WAVE | SOT360-1_112 | Withdrawn / End-of-life | AHC244 | 74AHC244PW,112 ( 9352 620 02112 ) |
74AHCT244D | ![]() SO20 (SOT163-1) | SOT163-1 | WAVE_BG-BD-1 | SOT163-1_112 | Withdrawn / End-of-life | 74AHCT244D | 74AHCT244D,112 ( 9352 619 57112 ) |
74AHCT244PW | ![]() TSSOP20 (SOT360-1) | SOT360-1 | SSOP-TSSOP-VSO-WAVE | SOT360-1_112 | Withdrawn / End-of-life | AHCT244 | 74AHCT244PW,112 ( 9352 619 59112 ) |
Discontinuation information
Type number | Orderable part number, (Ordering code (12NC)) | Last time buy date | Last time delivery date | Replacement product | Status | Comments |
---|---|---|---|---|---|---|
74AHC244D | 935262001112 | 2021-12-31 | 2022-06-30 | 74AHC244D | ||
74AHC244PW | 935262002112 | 2021-12-31 | 2022-06-30 | 74AHC244PW | ||
74AHCT244D | 935261957112 | 2021-12-31 | 2022-06-30 | 74AHCT244D | ||
74AHCT244PW | 935261959112 | 2021-12-31 | 2022-06-30 | 74AHCT244PW |
Environmental information
Type number | Orderable part number | Chemical content | RoHS | RHF-indicator | Leadfree conversion date |
---|---|---|---|---|---|
74AHC244BQ | 74AHC244BQ,115 | 74AHC244BQ | ![]() | Always Pb-free | |
74AHC244D | 74AHC244D,118 | 74AHC244D | ![]() | week 30, 2004 | |
74AHC244PW | 74AHC244PW,118 | 74AHC244PW | ![]() | week 7, 2005 | |
74AHCT244BQ | 74AHCT244BQ,115 | 74AHCT244BQ | ![]() | Always Pb-free | |
74AHCT244D | 74AHCT244D,118 | 74AHCT244D | ![]() | week 30, 2004 | |
74AHCT244PW | 74AHCT244PW,118 | 74AHCT244PW | ![]() | week 7, 2005 |
The variants in the table below are discontinued. See the table Discontinuation information for more information.
Type number | Orderable part number | Chemical content | RoHS | RHF-indicator | Leadfree conversion date |
---|---|---|---|---|---|
74AHC244D | 74AHC244D,112 | 74AHC244D | ![]() | week 30, 2004 | |
74AHC244PW | 74AHC244PW,112 | 74AHC244PW | ![]() | week 7, 2005 | |
74AHCT244D | 74AHCT244D,112 | 74AHCT244D | ![]() | week 30, 2004 | |
74AHCT244PW | 74AHCT244PW,112 | 74AHCT244PW | ![]() | week 7, 2005 |
Documentation (9)
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 |
ahct244 | ahct244 IBIS model | IBIS model | 2013-04-07 |
ahc244 | ahc244 IBIS model | IBIS model | 2013-04-07 |
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 |
SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
SOT360-1 | plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 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 | 2022-06-20 |
WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
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