Specification	SN74F521NSR

Current - Output High, Low [custom]	1 mA
Current - Output High, Low [custom]	20 mA
Max Propagation Delay @ V, Max CL	10 ns
Mounting Type	Surface Mount
Number of Bits	8
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output	Active Low
Output Function	A=B
Package / Case	20-SOIC
Package / Case	0.209 "
Package / Case	5.3 mm
Supplier Device Package	20-SO
Type	Identity Comparator
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74F521 Series

8-Bit Identity/Magnitude Comparators (P=Q) with Enable

Part	Max Propagation Delay @ V, Max CL	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Output	Operating Temperature [Max]	Supplier Device Package	Type	Number of Bits	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case	Package / Case [y]	Package / Case [y]	Mounting Type	Output Function	Package / Case	Package / Case
Texas Instruments SN74F521DWR	10 ns	1 mA	20 mA	Active Low	70 °C	20-SOIC	Identity Comparator	8	4.5 V	5.5 V	20-SOIC	0.295 in	7.5 mm	Surface Mount	A=B
Texas Instruments SN74F521NSR	10 ns	1 mA	20 mA	Active Low	70 °C	20-SO	Identity Comparator	8	4.5 V	5.5 V	20-SOIC			Surface Mount	A=B	0.209 "	5.3 mm
Texas Instruments SN74F521N	10 ns	1 mA	20 mA	Active Low	70 °C	20-PDIP	Identity Comparator	8	4.5 V	5.5 V	20-DIP			Through Hole	A=B	0.3 in	7.62 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.94
		10	$ 0.82
		25	$ 0.77
		100	$ 0.63
		250	$ 0.59
		500	$ 0.50
		1000	$ 0.40
	Digi-Reel®	1	$ 0.94
		10	$ 0.82
		25	$ 0.77
		100	$ 0.63
		250	$ 0.59
		500	$ 0.50
		1000	$ 0.40
	Tape & Reel (TR)	2000	$ 0.31
Texas Instruments	LARGE T&R	1	$ 0.67
		100	$ 0.52
		250	$ 0.38
		1000	$ 0.27

Description

General part information

SN74F521 Series

These identity comparators perform comparisons on two 8-bit binary or BCD words. They provideoutputs.

The SN54F521 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74F521 is characterized for operation from 0°C to 70°C.

These identity comparators perform comparisons on two 8-bit binary or BCD words. They provideoutputs.

Documents

Technical documentation and resources

8-Bit Identity Comparators datasheet

Data sheet