Where can I buy MC74HCT244ADG?

MC74HCT244ADG is available from Digi-Key, Digi-Key, Hotenda. See pricing comparison above.

MC74HCT244ADG onsemi | Integrated Circuits (ICs) | DigiKey

Brand name, Manufacturer name, Manufacturer, Attribute01	onsemi
Attribute00	Integrated Circuits (ICs)
Attribute02	74HCT
Attribute03	Tape & Reel (TR)
Attribute04	Obsolete
Attribute05	Buffer, Non-Inverting
Attribute06	2
Attribute07	4
Attribute08	-
Attribute09	3-State
Attribute10	6mA, 6mA
Attribute11	4.5V ~ 5.5V
Attribute12	-55?C ~ 125?C (TA)
Attribute13	Surface Mount
Attribute14	20-TSSOP (0.173", 4.40mm Width)
Attribute15	20-TSSOP
Attribute16	74HCT244
AttributeKey00	Category
AttributeKey01	Mfr
AttributeKey02	Series
AttributeKey03	Package
AttributeKey04	Product Status
AttributeKey05	Logic Type
AttributeKey06	Number of Elements
AttributeKey07	Number of Bits per Element
AttributeKey08	Input Type
AttributeKey09	Output Type
AttributeKey10	Current - Output High, Low
AttributeKey11	Voltage - Supply
AttributeKey12	Operating Temperature
AttributeKey13	Mounting Type
AttributeKey14	Package / Case
AttributeKey15	Supplier Device Package
AttributeKey16	Base Product Number
Extra Product Name	MC74HCT244ADG onsemi \| Integrated Circuits (ICs) \| DigiKey
atoms, moq, multiple	1
extraShipping, qtyInStock	0
MPN	MC74HCT244ADG
SKU	807297
snippet	Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP

Seller	SKU	MOQ	Multiple
Digi-Key	807297	1	1
Digi-Key	807302	1	1
Hotenda	H2492553	1	1