Datasheet DM74LS266N, DM74LS266MX, DM74LS266M Datasheet (Fairchild Semiconductor)

© 2000 Fairchild Semiconductor Corporation DS010182 www.fairchildsemi.com

March 1989
Revised March 2000

DM74LS266 Quad 2-Input Exclusive-NOR Gate

DM74LS266
Quad 2-Input Exclusive-NOR Gate
with Open-Collector Outputs

General Description

This device contains four independent gates each of which
performs the logic exclusive-NOR function. Outputs are
open collector.

Ordering Code:

Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering code.

Connection Diagram Truth Table

H = HIGH Voltage Level
L = LOW Voltage Level

Order Number Package Number Package Description

DM74LS266M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JED EC MS-120, 0.150 Narrow
DM74LS266N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Inputs Outputs

AB Y

LL H
LH L
HL L
HH H

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DM74LS266

Absolute Maximum Ratings(Note 1)

Note 1: The “Absolute Maximum Ratin gs” are those v alues beyon d which

the safety of the dev ice cannot be guaranteed. T he device sh ould not be
operated at these limits. The paramet ric values defined in the “Electrical
Characteristics” ta ble are not guaranteed at the absolute maximum ratings.
The “Recommend ed O peratin g Cond itions” t able w ill defin e the co ndition s
for actual device operation.

Recommended Operating Conditions

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Note 2: All typicals are at VCC = 5V, TA = 25°C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Switching Characteristics

VCC = 5V, TA = 25°C

Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range −65°C to +150°C

Symbol Parameter Min Nom Max Units

V

CC

Supply Voltage 4.75 5 5.25 V

V

IH

HIGH Level Input Voltage 2 V

V

IL

LOW Level Input Voltage 0.8 V

V

OH

HIGH Level Output Voltage 5.5 V

I

OL

LOW Level Output Current 8 mA

T

A

Free Air Operating Temperature 0 70 °C

Symbol Parameter Conditions Min

Typ

Max Units

(Note 2)

V

I

Input Clamp Voltage VCC = Min, II = −18 mA −1.5 V

I

CEX

HIGH Level VCC = Min, VO = 5.5V,

100 µA

Output Current VIL = Max

V

OL

LOW Level VCC = Min, IOL = Max,

0.5

Output Voltage VIH = Min V

IOL = 4 mA, VCC = Min 0.4

I

I

Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.2 mA

I

IH

HIGH Level Input Current VCC = Max, VI = 2.7V 40 µA

I

IL

LOW Level Input Current VCC = Max, VI = 0.4V −0.8 mA

I

OS

Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA

I

CC

Supply Current VCC = Max 13 mA

RL = 2 kΩ

Symbol Parameter CL = 15 pF Units

Min Max

t

PLH

Propagation Delay Time

23 ns

LOW-to-HIGH Level Output

t

PHL

Propagation Delay Time

23 ns

HIGH-to-LOW Level Output

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DM74LS266

Physical Dimensions inches (millimeters) unless otherwise noted

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow

Package Number M14A

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DM74LS266 Quad 2-Input Exclusive-NOR Gate

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

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

Package Number N14A

Fairchild does not assume any responsibility for use of any circuitry described, no circuit pate nt licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or syste ms
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea­sonably expected to result in a significant inju ry to the
user.

2. A critical component i n any compon ent of a lif e support
device or system whose failu re to perform can be rea­sonably expected to ca use the fa i lure of the life su pp ort
device or system, or to affect its safety or effectiveness.

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