Where can I buy M74HC688B1R?

M74HC688B1R is available from Digi-Key, 1Source, Hotenda, iodParts. See pricing comparison above.

M74HC688B1R STMicroelectronics | Integrated Circuits (ICs) | DigiKey

Brand name, Manufacturer name, Manufacturer, Attribute01	STMicroelectronics
Attribute00	Integrated Circuits (ICs)
Attribute02	74HC
Attribute03	Tube
Attribute04	Obsolete
Attribute05	Identity Comparator
Attribute06	8
Attribute07	Active Low
Attribute08	A=B
Attribute09	2V ~ 6V
Attribute10	5.2mA, 5.2mA
Attribute11	29ns @ 6V, 50pF
Attribute12	4 ?A
Attribute13	-55?C ~ 125?C
Attribute14	20-DIP (0.300", 7.62mm)
Attribute15	20-DIP
Attribute16	Through Hole
Attribute17	74HC688
AttributeKey00	Category
AttributeKey01	Mfr
AttributeKey02	Series
AttributeKey03	Package
AttributeKey04	Product Status
AttributeKey05	Type
AttributeKey06	Number of Bits
AttributeKey07	Output
AttributeKey08	Output Function
AttributeKey09	Voltage - Supply
AttributeKey10	Current - Output High, Low
AttributeKey11	Max Propagation Delay @ V, Max CL
AttributeKey12	Current - Quiescent (Iq)
AttributeKey13	Operating Temperature
AttributeKey14	Package / Case
AttributeKey15	Supplier Device Package
AttributeKey16	Mounting Type
AttributeKey17	Base Product Number
Extra Product Name	M74HC688B1R STMicroelectronics \| Integrated Circuits (ICs) \| DigiKey
atoms, moq, multiple	1
extraShipping, qtyInStock	0
MPN	M74HC688B1R
SKU	1038857
snippet	Magnitude Comparator Bit Active Low Output A=B 20-DIP

Seller	SKU	MOQ	Multiple
Digi-Key	1038857	1	1
1Source	M74HC688B1R	1	1
Hotenda	H2494567	1	1
iodParts	M74HC688B1R	1	1