Philips N74ALS27D, N74ALS27N Datasheet

INTEGRATED CIRCUITS

74ALS27

Triple 3-Input NOR gate

Product specification

1991 Feb 08

IC05 Data Handbook

m n r

Philips Semiconductors	Product specification
Triple 3-input NOR gate	74ALS27

TYPICAL

TYPICAL

PIN CONFIGURATION

TYPE

SUPPLY CURRENT

PROPAGATION DELAY

(TOTAL)

1A

VCC

1

14

74ALS27

4.0ns

1.5mA

1B

1C

2

13

2A

3

12

1Y

ORDERING INFORMATION

2B

3C

4

11

ORDER CODE

2C

3B

5

10

DRAWING

DESCRIPTION

COMMERCIAL RANGE

2Y

6

9

3A

NUMBER

VCC = 5V ±10%,

Tamb = 0°C to +70°C

GND

7

8

3Y

SC00014

14-pin plastic DIP

74ALS27N

SOT27-1

14-pin plastic SO

74ALS27D

SOT108-1

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS

DESCRIPTION

74ALS (U.L.)

LOAD VALUE

HIGH/LOW

HIGH/LOW

nA, nB, nC

Data inputs

1.0/1.0

20μA/0.1mA

Data output

20/80

0.4mA/8mA

nY

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

LOGIC SYMBOL

	1		2		13		3			4		5		9		10			11
	1A		1B		1C		2A			2B		2C		3A		3B			3C
							1Y			2Y		3Y
							12			6		8
VCC = Pin 14
GND = Pin 7																					SC00016
LOGIC DIAGRAM
		1A		1
			2											12
		1B
																1Y
				13
		1C
				3
		2A
			4											6
		2B
																2Y
				5
		2C
				9
		3A
			10											8
		3B
																3Y
VCC = Pin 14			11
		3C

GND = Pin 7

SC00028

IEC/IEEE SYMBOL

	1	1
2			12
13
3
4			6
5
9
10			8
11
				SF00036

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

1991 Feb 08

2

853±1162 01670

Philips Semiconductors	Product specification
Triple 3-input NOR gate	74ALS27

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
VCC	Supply voltage	±0.5 to +7.0	V
VIN	Input voltage	±0.5 to +7.0	V
IIN	Input current	±30 to +5	mA
VOUT	Voltage applied to output in High output state	±0.5 to VCC	V
IOUT	Current applied to output in Low output state	16	mA
Tamb	Operating free-air temperature range	0 to +70	°C
Tstg	Storage temperature range	±65 to +150	°C

RECOMMENDED OPERATING CONDITIONS

	SYMBOL	PARAMETER		LIMITS		UNIT
			MIN	NOM	MAX
	VCC	Supply voltage	4.5	5.0	5.5	V
	VIH	High-level input voltage	2.0			V
	VIL	Low-level input voltage			0.8	V
	IIk	Input clamp current			±18	mA
	IOH	High-level output current			±0.4	mA
	IOL	Low-level output current			8	mA
	Tamb	Operating free-air temperature range	0		+70	°C

DC ELECTRICAL CHARACTERISTICS

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

SYMBOL

PARAMETER

TEST CONDITIONS1

LIMITS

UNIT

MIN

TYP2

MAX

VOH

High-level output voltage

VCC±10%, VIL = MAX, VIH = MIN, IOH = ±0.4mA

VCC ± 2

V

VOL

Low-level output voltage

VCC = MIN, VIL = MAX,

IOL = 4mA

0.25

0.40

V

VIH = MIN

IOL = 8mA

0.35

0.50

V

VIK

Input clamp voltage

VCC = MIN, II = IIK

±0.73

±1.5

V

II

Input current at maximum input voltage

VCC = MAX, VI = 7.0V

0.1

mA

IIH

High-level input current

VCC = MAX, VI = 2.7V

20

μA

IIL

Low-level input current

VCC = MAX, VI = 0.5V

±0.1

mA

I

Output current3

V = MAX, V

O

= 2.25V

±30

±112

mA

O

CC

ICC

Supply current (total)

ICCH

VCC = MAX

VI = 0V

1.0

1.8

mA

ICCL

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 VCC = 5V, Tamb = 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, IOS.

1991 Feb 08

3