DM74ALS520WM datasheet, PDF - EEWORLD Datasheet

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DM74ALS520WM: DescriptionIC COMPARATOR IDENTITY 8B 20SOIC; Categorysemiconductor logic; File Size50KB，5 Pages; ManufacturerON Semiconductor; Websitehttp://www.onsemi.cn; Environmental Compliance

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DM74ALS520WM Overview

IC COMPARATOR IDENTITY 8B 20SOIC

DM74ALS520WM Parametric

Parameter Name	Attribute value
type	identity comparator
Number of digits	8
output	Low effective
Output function	A=B
Voltage - Power	4.5 V ~ 5.5 V
Current - output high, low	2.6mA，24mA
Maximum propagation delay at different V, maximum CL	20ns @ 5V，50pF
Operating temperature	0°C ~ 70°C
Package/casing	20-SOIC (0.295", 7.50mm wide)
Installation type	surface mount

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DM74ALS520 • DM74ALS521 8-Bit Comparator

September 1986

Revised April 2000

DM74ALS520 • DM74ALS521

8-Bit Comparator

General Description

These comparators perform an “equal to” comparison of

two 8-bit words with provision for expansion or external

enabling. The matching of the two 8-bit input plus a logic

LOW on the EN input produces the output A

B on the

DM74ALS520 and DM74ALS521. The DM74ALS520 and

DM74ALS521 have totem pole outputs for wire AND cas-

cading. Additionally, the DM74ALS520 is provided with B

input pull up termination resistors for analog or switch data.

Features

Switching specifications at 50 pF

Switching specifications guaranteed over full tempera-

ture and V

range

Advanced oxide-isolated, ion-implanted Schottky TTL

process

Functionally and pin for pin compatible with LS family

counterpart

Improved output transient handling capability

Ordering Code:

Ordering Code

DM74ALS520WM

DM74ALS520N

DM74ALS521WM

SM74ALS521N

Package Number

M20B

N20A

M20B

N20A

Package Description

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Function Table

Inputs

HIGH Logic Level

LOW Logic Level

Don't Care

Output

Data

≠

DS006114

www.fairchildsemi.com

DM74ALS520WM Related Products

	DM74ALS520WM	DM74ALS521N	DM74ALS520N	DM74ALS521WM	DM74ALS521WMX	DM74ALS520WMX
Description	IC COMPARATOR IDENTITY 8B 20SOIC	IC COMPARATOR IDENTITY 8B 20DIP	IC COMPARATOR IDENTITY 8B 20DIP	IC COMPARATOR IDENTITY 8B 20SOIC	IC COMPARATOR IDENTITY 8B 20SOIC	IC COMPARATOR IDENTITY 8B 20SOIC
type	identity comparator	identity comparator	identity comparator	identity comparator	identity comparator	identity comparator
Number of digits	8	8	8	8	8	8
output	Low effective	Low effective	Low effective	Low effective	Low effective	Low effective
Output function	A=B	A=B	A=B	A=B	A=B	A=B
Voltage - Power	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V
Current - output high, low	2.6mA，24mA	2.6mA，24mA	2.6mA，24mA	2.6mA，24mA	2.6mA，24mA	2.6mA，24mA
Maximum propagation delay at different V, maximum CL	20ns @ 5V，50pF	20ns @ 5V，50pF	20ns @ 5V，50pF	20ns @ 5V，50pF	20ns @ 5V，50pF	20ns @ 5V，50pF
Operating temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package/casing	20-SOIC (0.295", 7.50mm wide)	20-DIP（0.300"，7.62mm）	20-DIP（0.300"，7.62mm）	20-SOIC (0.295", 7.50mm wide)	20-SOIC (0.295", 7.50mm wide)	20-SOIC (0.295", 7.50mm wide)
Installation type	surface mount	Through hole	Through hole	surface mount	surface mount	surface mount

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