74F260 datasheet(4/8 Pages) PHILIPS

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Philips Semiconductors

Product specification

74F260

Dual 5-input NOR gate

1988 Nov 29

AC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST

CONDITION

VCC = +5.V

Tamb = +25°C

CL = 50pF, RL = 500Ω

VCC = +5.V ± 10%

Tamb = 0°C to +70°C

CL = 50pF, RL = 500Ω

UNIT

MIN

TYP

MAX

MIN

MAX

tPLH

tPHL

Propagation delay

Dna, Dnb, Dnc, Dnd, Dne to Qn

Waveform

NO TAG

2.5

1.5

4.0

2.5

5.5

4.0

2.0

1.0

6.5

4.5

AC WAVEFORM

For all waveforms, VM = 1.5V.

Dna, Dnb, Dnc,

Dnd, Dne

tPHL

tPLH

SF00833

Waveform 1.

For Inverting Outputs

TEST CIRCUIT AND WAVEFORMS

90%

10%

90%

10%

90%

10%

90%

10%

NEGATIVE

PULSE

POSITIVE

PULSE

AMP (V)

tTHL (tf )

INPUT PULSE REQUIREMENTS

rep. rate

tTLH

tTHL

1MHz

500ns

2.5ns

Input Pulse Definition

VCC

family

74F

D.U.T.

PULSE

GENERATOR

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

3.0V

1.5V

SF00006

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