74F154 datasheet(5/8 Pages) PHILIPS

5 / 8 page

Philips Semiconductors

Product specification

74F154

Decoder/demultiplexer

1990 Jan 08

AC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST

CONDITION

VCC = +5.0V

Tamb = +25°C

CL = 50pF, RL = 500Ω

VCC = +5.0V ± 10%

Tamb = 0°C to +70°C

CL = 50pF, RL = 500Ω

UNIT

MIN

TYP

MAX

MIN

MAX

tPLH

tPHL

Propagation delay

An to Qn

Waveform 1

2.0

3.5

5.0

6.5

9.5

10.0

1.5

3.0

10.5

tPLH

tPHL

Propagation delay

En to Qn

Waveform 2

2.0

4.0

6.0

7.5

9.0

1.5

3.5

8.0

9.5

AC WAVEFORMS

For all waveforms, VM = 1.5V.

tPHL

tPLH

SF00133

Waveform 1.

Propagation Delay for Address to Output

Qn,

tPHL

tPLH

SF00684

Waveform 2.

Propagation Delay for Enable to Output

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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