PCK2002MDB Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

PCK2002MDB

0–300 MHz I2C 1:10 clock buffer

Philips Electronics 

Philips Semiconductors

0–300 MHz I2C 1:10 clock buffer

Product data

PCK2002M

AC WAVEFORMS

VM = 1.5 V

VX = VOL + 0.3 V

VY = VOH –0.3 V

VOL and VOH are the typical output voltage drop that occur with the

output load.

BUF_IN

INPUT

VM

tPLH

VDD

VM

tPHL

BUF_OUT

VM

VM

SW00246

Figure 1. Load circuitry for switching times.

VI

VDD

nOE INPUT

VM

GND

VDD

OUTPUT

LOW-to-OFF

OFF-to-LOW

VOL

tPLZ

VX

tPZL

VM

VOH

OUTPUT

HIGH-to-OFF

OFF-to-HIGH

VSS

tPHZ

outputs

enabled

tPZH

VY

outputs

disabled

VM

outputs

enabled

SW00245

Figure 2. 3-State enable and disable times

TSDKH

TSDKP

DUTY CYCLE

2.4

1.5

0.4

TSDRISE

TSDKL

TSDFALL

SW00247

Figure 3. SDRAM Output clock

TEST CIRCUIT

VDD

PULSE

GENERATOR

VI

RT

D.U.T.

VO

CL

S1

2<VDD

Open

VSS

500Ω

500Ω

TEST

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

Open

2<VDD

VSS

SW00251

Figure 4. Load circuitry for switching times

2001 Jul 19

9

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