DM74LS28M datasheet, PDF - EEWORLD Datasheet

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DM74LS28M: DescriptionNOR Gate, LS Series, 4-Func, 2-Input, TTL, PDSO14, 0.150 INCH, MS-012, SOIC-14; Categorylogic logic; File Size710KB，4 Pages; ManufacturerRochester Electronics; Websitehttps://www.rocelec.com/

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DM74LS28M Overview

NOR Gate, LS Series, 4-Func, 2-Input, TTL, PDSO14, 0.150 INCH, MS-012, SOIC-14

DM74LS28M Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	Rochester Electronics
Parts packaging code	SOIC
package instruction	SOP,
Contacts	14
Reach Compliance Code	unknown
series	LS
JESD-30 code	R-PDSO-G14
JESD-609 code	e0
length	8.65 mm
Logic integrated circuit type	NOR GATE
Number of functions	4
Number of entries	2
Number of terminals	14
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
propagation delay (tpd)	20 ns
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage (Vsup)	5.25 V
Minimum supply voltage (Vsup)	4.75 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
technology	TTL
Temperature level	COMMERCIAL
Terminal surface	TIN LEAD
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.9 mm

DM74LS28M Preview

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DM74LS28 Quad 2-Input NOR Buffer

March 1989

Revised January 2001

DM74LS28

Quad 2-Input NOR Buffer

General Description

The DM74LS28 contains four independent gates each of

which perform the logic NOR function.

Ordering Code:

Order Number

DM74LS28M

Package Number

M14A

Package Description

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

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

Connection Diagram

Truth Table

A+B

Inputs

HIGH logic level

LOW logic level

Output

DS010169

www.fairchildsemi.com

DM74LS28

Absolute Maximum Ratings

(Note 1)

Supply Voltage

Input Voltage

Operating Free Air Temperature Range

Storage Temperature Range

C to

Note 1:

The “Absolute Maximum Ratings” are those values beyond which

the safety of the device cannot be guaranteed. The device should not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the absolute maximum ratings.

The “Recommended Operating Conditions” table will define the conditions

for actual device operation.

−

C to

150

Recommended Operating Conditions

Symbol

Supply Voltage

HIGH Level Input Voltage

LOW Level Input Voltage

HIGH Level Output Current

LOW Level Output Current

Free Air Operating Temperature

Parameter

Min

4.75

0.7

Nom

Max

5.25

Units

−

1.2

Electrical Characteristics

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

Symbol

CCH

CCL

Parameter

Input Clamp Voltage

HIGH Level Output Voltage

LOW Level Output Voltage

Input Current @ Max Input Voltage

HIGH Level Input Current

LOW Level Input Current

Short Circuit Output Current

Supply Current with Outputs HIGH

Supply Current with Outputs LOW

Conditions

Min, I

= −18

Min, I

Max, V

Max

Min, I

Max, V

Min

12 mA, V

Min

Max, V

2.7V

Max, V

0.4V

Max (Note 3)

Max

−30

2.7

0.5

0.4

0.1

−0.4

−130

3.6

13.8

Min

Typ

(Note 2)

Max

−1.5

Units

µA

Note 2:

All typicals are at V

5V, T

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

= +

5.0V, T

= +25°C

2 kΩ

Symbol

Parameter

Min

PLH

PHL

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

15 pF

Max

Units

www.fairchildsemi.com

DM74LS28 Quad 2-Input NOR Buffer

Physical Dimensions

inches (millimeters) unless otherwise noted

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

Package Number M14A

Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent 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 systems

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 rea-

sonably expected to result in a significant injury to the

user.

2. A critical component in any component of a life support

device or system whose failure to perform can be rea-

sonably expected to cause the failure of the life support

device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com

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