Philips N74ALS20AD, N74ALS20AN Datasheet

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74ALS20A

Dual 4-Input NAND gate

Product specification 1996 Jul 01

INTEGRATED CIRCUITS

IC05 Data Handbook

Philips Semiconductors Product specification

74ALS20ADual 4-input NAND gate

2

1996 Jul 01 853–0859 01670

TYPE

TYPICAL

PROPAGATION DELAY

TYPICAL

SUPPLY CURRENT

(TOTAL)

74ALS20A 4.5ns 0.65mA

ORDERING INFORMATION

ORDER CODE

DESCRIPTION COMMERCIAL RANGE

V

CC

= 5V ±10%,

T

amb

= 0°C to +70°C

DRAWING

NUMBER

14-pin plastic DIP 74ALS20AN SOT27-1

14-pin plastic SO 74ALS20AD SOT108-1

PIN CONFIGURATION

14
13
12
11
10

9
87

6

5

4

3

2

11A

1B

NC

1C
1D
1Y

GND 2Y

2A

2B

NC

2C

2D

V

CC

SC00024

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS DESCRIPTION

74ALS (U.L.)

HIGH/LOW

LOAD VALUE

HIGH/LOW

nA, nB, nC, nD Data inputs 1.0/1.0 20µA/0.1mA

nY Data outputs 20/80 0.4mA/8mA

NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.

LOGIC SYMBOL

VCC = Pin 14
GND = Pin 7

12459101213

1A 1B 1C 1D 2A 2B 2C 2D

1Y 2Y

68

SC00025

IEC/IEEE SYMBOL

SF00068

&

6

8

1

2
4

5

9

10
12

13

LOGIC DIAGRAM

VCC = Pin 14
GND = Pin 7

1A
1B

1Y

6

1
2

SC00026

1C

4

1D

5

2A
2B

2Y

8

9
10

2C

12

2D

13

FUNCTION TABLE

INPUTS OUTPUT

nA nB nC nD nY

H H H H L
L X X X H
X L X X H
X X L X H
X X X L H

H = High voltage level
L = Low voltage level
X = Don’t care

Philips Semiconductors Product specification

74ALS20ADual 4-input NAND gate

1996 Jul 01

3

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)

SYMBOL

PARAMETER RATING UNIT

V

CC

Supply voltage –0.5 to +7.0 V

V

IN

Input voltage –0.5 to +7.0 V

I

IN

Input current –30 to +5 mA

V

OUT

Voltage applied to output in High output state –0.5 to V

CC

V

I

OUT

Current applied to output in Low output state 16 mA

T

amb

Operating free-air temperature range 0 to +70 °C

T

stg

Storage temperature range –65 to +150 °C

RECOMMENDED OPERATING CONDITIONS

LIMITS

SYMBOL

PARAMETER

MIN NOM MAX

UNIT

V

CC

Supply voltage 4.5 5.0 5.5 V

V

IH

High-level input voltage 2.0 V

V

IL

Low-level input voltage 0.8 V

I

Ik

Input clamp current –18 mA

I

OH

High-level output current –0.4 mA

I

OL

Low-level output current 8 mA

T

amb

Operating free-air temperature range 0 +70 °C

DC ELECTRICAL CHARACTERISTICS

(Over recommended operating free-air temperature range unless otherwise noted.)

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

1

MIN TYP2MAX

UNIT

V

OH

High-level output voltage VCC±10%, VIL = MAX, VIH = MIN, IOH = –0.4mA V

CC

– 2 V

p

VCC = MIN, VIL = MAX,

I

OL

= 4mA 0.25 0.40 V

VOLLow-level output voltage

CC

,

IL

,

VIH = MIN

I

OL

= 8mA 0.35 0.50 V

V

IK

Input clamp voltage VCC = MIN, II = I

IK

–0.73 –1.5 V

I

I

Input current at maximum input voltage VCC = MAX, VI = 7.0V 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 = 0.5V –0.1 mA

I

O

Output current

3

VCC = MAX, VO = 2.25V –30 –112 mA

pp

I

CCH

VI = 0V 0.3 0.4 mA

ICCSupply current (total)

I

CCL

V

CC

=

MAX

VI = 4.5V 1.0 1.5 mA

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.

2. All typical values are at V

CC

= 5V, T

amb

= 25°C.

3. The output conditions have been chosen to produce a current that closely approximate one half of the true short-circuit output current, I

OS

.