Logic

Part #	$ Range	Stock	PDF	Description	Supplier Device Package	Current	Type	Number of Bits	Operating Temperature	Max Propagation Delay @ V, Max CL	Voltage	Mounting Type	Output	Package	Output Function
National Semiconductor MM74HC688WMX	$0.27	2193	-	MAGNITUDE COMPARATOR	20-SOIC	8 µA	Identity Comparator	8	-40°C ~ 85°C	30ns @ 6V, 50pF	2V ~ 6V	Surface Mount	Active Low	20-SOIC (0.295", 7.50mm Width)	A=B
Texas Instruments SN74F521DWR	$0.32	245	-	IC COMPARATOR IDENTITY 8B 20SOIC	20-SOIC	1mA, 20mA	Identity Comparator	8	0°C ~ 70°C	10ns @ 5V, 50pF	4.5V ~ 5.5V	Surface Mount	Active Low	20-SOIC (0.295", 7.50mm Width)	A=B
Texas Instruments CD74HCT688M	$1.12	193	-	IC COMPARATOR IDENTITY 20SOIC	20-SOIC	8 µA	Identity Comparator	8	-55°C ~ 125°C	34ns @ 4.5V, 50pF	4.5V ~ 5.5V	Surface Mount	Active Low	20-SOIC (0.295", 7.50mm Width)	A=B
Texas Instruments SN74HC688DW	$1.61	126		IC COMPARATOR IDENTITY 8B 20SOIC	20-SOIC	8 µA	Identity Comparator	8	-40°C ~ 85°C	36ns @ 6V, 50pF	2V ~ 6V	Surface Mount	Active Low	20-SOIC (0.295", 7.50mm Width)	A=B
Texas Instruments CD74HC85M	$1.37	122	-	IC COMPARATOR MAGNITUDE 16SOIC	16-SOIC	8 µA	Magnitude Comparator	4	-55°C ~ 125°C	33ns @ 6V, 50pF	2V ~ 6V	Surface Mount	Active High	16-SOIC (0.154", 3.90mm Width)	AB