Philips N74ALS27D, N74ALS27N Datasheet

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74ALS27

Triple 3-Input NOR gate

Product specification 1991 Feb 08

INTEGRATED CIRCUITS

IC05 Data Handbook

Philips Semiconductors Product specification

74ALS27Triple 3-input NOR gate

2

1991 Feb 08 853–1 162 01670

TYPE

TYPICAL

PROPAGATION DELAY

TYPICAL

SUPPLY CURRENT

(TOTAL)

74ALS27 4.0ns 1.5mA

ORDERING INFORMATION

ORDER CODE

DESCRIPTION COMMERCIAL RANGE

V

CC

= 5V ±10%,

T

amb

= 0°C to +70°C

DRAWING

NUMBER

14-pin plastic DIP 74ALS27N SOT27-1

14-pin plastic SO 74ALS27D SOT108-1

PIN CONFIGURATION

14
13
12
11
10

9
87

6

5

4

3

2

11A
1B
2A
2B
2C
2Y

GND 3Y

3A

3B

3C

1Y

1C

V

CC

SC00014

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS DESCRIPTION

74ALS (U.L.)

HIGH/LOW

LOAD VALUE

HIGH/LOW

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

nY Data output 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

1213345910

1A 1B 1C 2A 2B 2C 3A 3B

1Y 2Y 3Y

12 6 8

SC00016

11

3C

IEC/IEEE SYMBOL

SF00036

1

12

6

8

1
2

13

3

4

5

9

10

11

LOGIC DIAGRAM

VCC = Pin 14
GND = Pin 7

1A
1B

1Y

12

1
2

SC00028

1C

13

2A
2B

2Y

6

3
4

2C

5

3A
3B

3Y

8

9
10

3C

11

FUNCTION TABLE

INPUTS OUTPUT

nA nB nC nY

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

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

Philips Semiconductors Product specification

74ALS27Triple 3-input NOR gate

1991 Feb 08

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 1.0 1.8 mA

ICCSupply current (total)

I

CCL

V

CC

=

MAX

VI = 4.5V 2.0 4.0 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

.