74ALS27N datasheet(4/7 Pages) PHILIPS

Part #	74ALS27N

Description	Triple 3-Input NOR gate

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

74ALS27

Triple 3-input NOR gate

1991 Feb 08

4

AC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST CONDITION

Tamb = 0°C to +70°C

VCC = +5.0V ± 10%

CL = 50pF, RL = 500Ω

UNIT

MIN

MAX

tPLH

tPHL

Propagation delay

nA, nB, nC to nY

Waveform 1

2.0

15.0

9.0

ns

AC WAVEFORMS

For all waveforms, VM = 1.3V.

VM

tPLH

tPHL

nA, nB, nC

nY

SC00018

Waveform 1.

Propagation Delay for Data to Output

TEST CIRCUIT AND WAVEFORMS

tw

90%

VM

10%

90%

VM

10%

90%

VM

10%

90%

VM

10%

NEGATIVE

PULSE

POSITIVE

PULSE

tw

AMP (V)

0.3V

tTHL (tff)

INPUT PULSE REQUIREMENTS

Rep.Rate

tw

tTLH

tTHL

1MHz

500ns

2.0ns

Input Pulse Definition

VCC

Family

74ALS

D.U.T.

PULSE

GENERATOR

RL

CL

RT

VIN

VOUT

Test Circuit for Totem-pole Outputs

DEFINITIONS:

RL = Load resistor;

see AC electrical characteristics for value.

CL = Load capacitance includes jig and probe capacitance;

see AC electrical characteristics for value.

RT = Termination resistance should be equal to ZOUT of

pulse generators.

tTHL (tf )

tTLH (tr )

AMP (V)

Amplitude

3.5V

1.3V

VM

SC00005

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74ALS27N Datasheet(PDF) 4 Page - NXP Semiconductors

74ALS27N Datasheet(HTML) 4 Page - NXP Semiconductors

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