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SN74F521DW	TEXAS INSTRUMENTS	-	Bipolar	1616	Identity Comparator 8-Bit Inverting 20-Pin SOIC Tube	0.3084
SN74HC682N	NATIONAL SEMICONDUCTOR	-		880	Magnitude Comparator 8-Bit 20-Pin PDIP Tube	3.538
SN74LS85D	NATIONAL SEMICONDUCTOR	-		1360	Magnitude Comparator 4-Bit 16-Pin SOIC Tube	0.8636
CD54HCT688F	NATIONAL SEMICONDUCTOR	-		805	Identity Comparator 8-Bit Inverting 20-Pin CDIP Tube	12.7696
CD74HC688M	NATIONAL SEMICONDUCTOR	-		808	Identity Comparator 8-Bit Inverting 20-Pin SOIC Tube	1.4573
SN74HC684N	NATIONAL SEMICONDUCTOR	-		1000	Magnitude Comparator 8-Bit 20-Pin PDIP Tube	5.195
SN74HC688N	NATIONAL SEMICONDUCTOR	-		4020	Identity Comparator 8-Bit 20-Pin PDIP Tube	0.944
SN74LS85N	NATIONAL SEMICONDUCTOR	-		3138	Magnitude Comparator 4-Bit Non-Inverting 16-Pin PDIP Tube	0.7704
PI74FCT3245L	PERICOM SEMICONDUCTOR	-		800	Bus XCVR Single 8-CH 3-ST 20-Pin TSSOP Tube	市价
74F521SCX	FAIRCHILD SEMICONDUCTOR	-	Bipolar	800	Identity Comparator 8-Bit 20-Pin SOIC W T/R	市价
N74F521D,602	NXP SEMICONDUCTORS	-	Bipolar	800	Identity Comparator 8-Bit 20-Pin SO Tube	市价
74HCT85N,652	NXP SEMICONDUCTORS	-	CMOS	800	Magnitude Comparator 4-Bit 16-Pin PDIP Bulk	市价
HEF4585BT,653	NXP SEMICONDUCTORS	-	CMOS	800	Magnitude Comparator 4-Bit 16-Pin SO T/R	市价
74HC688PW,112	NXP SEMICONDUCTORS	-	CMOS	800	Identity Comparator 8-Bit Inverting 20-Pin TSSOP Bulk	市价
74HC688DB,118	NXP SEMICONDUCTORS	-	CMOS	800	Identity Comparator 8-Bit Inverting 20-Pin SSOP T/R	0.415
SN74LS688DW	NATIONAL SEMICONDUCTOR	-		850	Identity Comparator 8-Bit 20-Pin SOIC Tube	2.229
SN74LS682N	NATIONAL SEMICONDUCTOR	-		1106	Magnitude Comparator 8-Bit 20-Pin PDIP Tube	2.058
SN74F521DWR	NATIONAL SEMICONDUCTOR	-		1139	Identity Comparator 8-Bit 20-Pin SOIC T/R	0.3607
SN54HC688J	NATIONAL SEMICONDUCTOR	-		811	Identity Comparator 8-Bit Inverting 20-Pin CDIP Tube	12.6236
SN54LS688J	NATIONAL SEMICONDUCTOR	-		849	Identity Comparator 8-Bit Totem-Pole Inverting 20-Pin CDIP Tube	47.8975
SN74ALS521DW	NATIONAL SEMICONDUCTOR	-		1175	Identity Comparator 8-Bit 20-Pin SOIC Tube	0.9346
SN74ALS520N	NATIONAL SEMICONDUCTOR	-		1226	Identity Comparator 8-Bit 20-Pin PDIP Tube	2.089
SN74ALS520DW	NATIONAL SEMICONDUCTOR	-		1100	Identity Comparator 8-Bit Totem-Pole Inverting 20-Pin SOIC Tube	1.2667
74F521SC	FAIRCHILD SEMICONDUCTOR	-		800	Identity Comparator 8-Bit 20-Pin SOIC Rail	市价
MC74F521DWR2	ON SEMICONDUCTOR	-		800	Identity Comparator 8-Bit 20-Pin SOIC T/R	市价

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