SSTL16857 Datasheet, PDF(6/8 Page) NXP Semiconductors – 14-bit SSTL_2 registered driver with differential clock inputs

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SSTL16857 Datasheet, PDF (6/8 Pages) NXP Semiconductors – 14-bit SSTL_2 registered driver with differential clock inputs

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Philips Semiconductors

14-bit SSTL_2 registered driver with

differential clock inputs

PARAMETER MEASUREMENT INFORMATION

AC WAVEFORMS

CLK

VREF

VIH

VREF

tPLH

OUTPUT

VREF

tPHL

VREF

VIL

VOH

VOL

SW00338

Waveform 1. Propagation delay times inverting and

non-inverting outputs

RESET

OUTPUT

VREF

tPHL

VREF

VIH

VIL

VOH

VOL

SW00402

Waveform 2. Propagation delay RESET to output.

Product specification

SSTL16857

INPUT

VIH

VREF

VIL

Waveform 3. Pulse duration

SW00339

VIH

TIMING INPUT

VREF

VIL

tsu

VIH

DATA INPUT

VREF

VIL

Waveform 4. Setup and hold times

SW00340

TEST CIRCUIT

TEST

POINT

VTT

25â¦ = SSTL_2 Class II

25â¦ 50â¦ = SSTL_2 Class I

CL = 10pF or 30pF

NOTES:

CL includes probe and jig capacitance

All input pulses are supplied by generators having the following characteristics:

PRR â¤ 10MHz, ZO = 50â¦, tr â¤ 1.25ns/V, tf 1.25ns/V.

The outputs are measured one at a time with one transition per measurement.

VTT = VREF = VDDQ x 0.5

Figure 1. Load circuitry

SW00337

50pF

500 â¦

SW00336

Figure 2.

50pF

SW00335

Figure 3.

1999 Sep 30

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