Specification	SN74ALS520N

Current - Output High, Low [custom]	24 mA
Current - Output High, Low [custom]	2.6 mA
Max Propagation Delay @ V, Max CL	20 ns
Mounting Type	Through Hole
Number of Bits	8
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output	Active Low
Output Function	A=B
Package / Case	20-DIP
Package / Case	7.62 mm
Package / Case	0.3 in
Supplier Device Package	20-PDIP
Type	Identity Comparator
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ALS520 Series

8-Bit Identity Comparators (P=Q) with Enable and 20K Ohm Q-Input Pullup Resistors

Part	Max Propagation Delay @ V, Max CL	Supplier Device Package	Package / Case	Package / Case	Package / Case	Number of Bits	Type	Operating Temperature [Max]	Output Function	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Output	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case [y]	Package / Case [y]
Texas Instruments SN74ALS520N	20 ns	20-PDIP	20-DIP	7.62 mm	0.3 in	8	Identity Comparator	70 °C	A=B	24 mA	2.6 mA	Active Low	Through Hole	4.5 V	5.5 V
Texas Instruments SN74ALS520DWR	20 ns	20-SOIC	20-SOIC			8	Identity Comparator	70 °C	A=B	24 mA	2.6 mA	Active Low	Surface Mount	4.5 V	5.5 V	0.295 in	7.5 mm
Texas Instruments SN74ALS520DWRE4	20 ns	20-SOIC	20-SOIC			8	Identity Comparator	70 °C	A=B	24 mA	2.6 mA	Active Low	Surface Mount	4.5 V	5.5 V	0.295 in	7.5 mm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 2.26
		20	$ 2.03
		40	$ 1.92
		100	$ 1.66
		260	$ 1.58
		500	$ 1.50
Texas Instruments	TUBE	1	$ 2.79
		100	$ 2.45
		250	$ 1.72
		1000	$ 1.38

Description

General part information

SN74ALS520 Series

These identity comparators perform comparisons on two 8-bit binary or BCD words. The SN74ALS518 provides P = Q outputs, while the ´ALS520 and SN74ALS521 provide P = Q\ outputs. The SN74ALS518 has an open-collector output. The SN74ALS518 and ´ALS520 feature 20-k pullup resistors on the Q inputs for analog or switch data.

The SN54ALS520 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS518, SN74ALS520, and SN74ALS521 are characterized for operation from 0°C to 70°C.

Documents

Technical documentation and resources

8-Bit Identity Comparators datasheet (Rev. B)

Data sheet