Fairchild Semiconductor DM74LS51N, DM74LS51MX, DM74LS51M Datasheet

© 2000 Fairchild Semiconductor Corporation DS006369 www.fairchildsemi.com

August 1986
Revised March 2000

DM74LS51 Dual 2-Wide 2-Input, 2-Wide 3-Input AND-OR-INVERT Gate

DM74LS51
Dual 2-Wide 2-Input, 2-Wide 3-Input

AND-OR-INVERT Gate

General Description

This device contains two independent combinations of
gates each of which performs the logic AND-OR-INVERT
function. Each package co ntains one 2-wide 2-input and
one 2-wide 3-input AND-OR-INVERT gates.

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 Function Table

H = HIGH Logic Level
L = LOW Logic Level
X = Either LOW or HIGH Logic Level

Order Number Package Number Package Description

DM74LS51M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
DM74LS51N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Y1 = (A1) (B1) (C1) + (D1) (E1) (F1)

Inputs Output

A1 B1 C1 D1 E1 F1 Y1

HHHXXX L
XXXHHH L

Other Combinations H

Y2 = ((A2) (B2) + (C2) (D2))

Inputs Output

A2 B2 C2 D2 Y2

HHXX L
XXHHL

Other combinations H

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DM74LS51

Absolute Maximum Ratings(Note 1)

Note 1: The “Absolute Maximum Ratings” are those values beyond which

the safety of the dev ice cannot be guaranteed. T he device sh ould not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables 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

at VCC = 5V and 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

I

OH

HIGH Level Output Current −0.4 mA

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

V

OH

HIGH Level VCC = Min, IOH = Max,

2.7 3.4 V

Output Voltage VIL = Max

V

OL

LOW Level VCC = Min, IOL = Max,

0.35 0.5

Output Voltage VIH = Min V

IOL = 4 mA, VCC = Min 0.25 0.4

I

I

Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 mA

I

IH

HIGH Level Input Current VCC = Max, VI = 2.7V 20 µA

I

IL

LOW Level Input Current VCC = Max, VI = 0.4V −0.36 mA

I

OS

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

I

CCH

Supply Current with Outputs HIGH VCC = Max 0.8 1.6 mA

I

CCL

Supply Current with Outputs LOW VCC = Max 1.4 2.8 mA

Symbol Parameter

CL = 50 pF, RL = 2 kΩ

Units

Min Max

t

PLH

Propagation Delay Time

418ns

LOW-to-HIGH Level Output

t

PHL

Propagation Delay Time

315ns

HIGH-to-LOW Level Output