MK1714-02RLFTR Datasheet MK1714-02RLF, MK1714-02RILF, MK1714-02RILFTR | P1-P3

DATASHEET

SPREAD SPECTRUM MULTIPLIER CLOCK MK1714-02

IDT™

SPREAD SPECTRUM MULTIPLIER CLOCK 1

MK1714-02 REV K 051310

Description

The MK1714-02 is a low cost, high performance clock

synthesizer with selectable multipliers and percentages of

spread designed to generate high frequency clocks with low

EMI. Using analog/digital Phase Locked Loop (PLL)

techniques, the device accepts an inexpensive,

fundamental mode, parallel resonant crystal or clock input

to produce a spread or dithered output. This reduces the

EMI amplitude peaks at the odd harmonics by several dB.

The OE pin puts both outputs into a high impedance state

for board level testing. The PD

pin powers down the entire

chip and the outputs are held low.

Features

• Packaged in 20-pin tiny SSOP

• Pb (lead) free package

• Operating voltage of 3.3 V or 5 V

• Multiplier modes of x1, x2, x3, x4, x5, and x6

• Inexpensive 10 - 25 MHz crystal or clock input

• OE pin tri-states the outputs for board testing

• Power down pin stops the outputs low

• Selectable frequency spread

• Spread can be turned on or off

• Advanced, low power CMOS process

• Duty cycle of 40/60

• Industrial temperature range available

Block Diagram

PLL Clock

Multiplier and

Spread

Spectrum

Circuitry

Input

Crystal or

Clock

OE (both outputs)

REF

Crystal

Oscillator

S4:0

Low EMI Enable

Clock Out

XSEL

GND

VDD

MK1714-02

SPREAD SPECTRUM MULTIPLIER CLOCK SSCG

IDT™

SPREAD SPECTRUM MULTIPLIER CLOCK 2

MK1714-02 REV K 051310

Pin Assignment

Pin Descriptions

Note: When changing the input frequency, the LEE pin must be set low for minimum of 10µs to allow the PLL to lock to the

new frequency. Alternatively, the PD

pin may be set low while changing frequencies.

GND

XSEL

S2 LEE

CLK

3VDD

VDD GND

18 PD

1X2

X1/ICLK OE

20 REF

GND

156

20 pin (150 mil) SSOP (QSOP)

Number

Name

Type

Pin Description

1 X2 XO Crystal connection. Connect to parallel mode crystal. Leave open for clock.

2 X1 XI Crystal connection. Connect to parallel mode crystal or clock.

3 VDD Power Connect to VDD. Must be same value as other VDD.

4 VDD Power Connect to VDD. Must be same value as other VDD.

5 S4 Input Select pin 4. Determines multiplier and spread amount per table on following page. Internal

pull-down.

6 S3 Input Select pin 3. Determines multiplier and spread amount per table on following page. Internal

pull-up.

7 GND Power Connect to ground.

8 GND Power Connect to ground.

9 S2 Input Select pin 2. Determines multiplier and spread amount per table on following page. Internal

pull-up.

10 CLK Output Clock output dependent on input, multiplier, and spread amount per table on following page.

11 XSEL Input Connect to VDD for crystal input, or GND for CLK input. Internal pull-down.

12 LEE Input Low EMI Enable. Turns on spread spectrum on CLK when high. Internal pull-up.

13 GND Power Connect to ground.

14 S1 Input Select pin 1. Determines multiplier and spread amount per table on following page. Internal

pull-up.

17 GND Power Connect to ground.

18 PD

Input Power down. Turns off chip when low. Outputs stop low. Leave open or connected to VDD if

power down is not required.

19 OE Input Output enable. Tri-states all outputs when low. Internal pull-up.

20 REF Output Reference clock output from crystal oscillator. This clock is not spread.

MK1714-02

SPREAD SPECTRUM MULTIPLIER CLOCK SSCG

IDT™

SPREAD SPECTRUM MULTIPLIER CLOCK 3

MK1714-02 REV K 051310

Clock Output Select Table (MHz)

For S4:S0, 0 = connect to GND, 1 = connect to VDD.

Direction: C = center spread, D = down spread, DC = down + center spread. Amount = spread amount. For example, for a 40 MHz output

clock spread down 1%, the lowest frequency is 39.60 MHz.

Contact IDT with your exact output frequency for details on spread direction and amount.

S4 S3 S2 S1 S0 Input Range Multiplier Output Range Direction Amount (%) 3.3/5V

000 0 0 40 - 80 x1 40 - 80 C ±0.75 Both

000 0 1 60 - 120 x1 60 -120 DC +0.25, -0.75 Both

000 1 0 40 - 80 x1 40 - 80 C ±1.25 Both

000 1 1 80 - 150 x1 80 - 150 C ±0.75 Both

001 0 0 10 - 30 x2 20 - 60 C ±0.75 Both

001 0 1 20 - 60 x2 40 - 120 C ±0.5 Both

001 1 0 10 - 25 x2 20 - 50 DC +0.25, -1.5 Both

001 1 1 20 - 60 x2 40 - 120 DC +0.5, -1 Both

010 0 0 20 - 30 x3 60 - 90 C ±0.5 Both

010 0 1 40 - 75 x2 80 - 150 C ±0.75 Both

010 1 0 40 - 100 x1 40 - 100 DC +0.25, -1.5 Both

010 1 1 40 - 75 x2 80 - 150 DC +0.25, -1.5 Both

011 0 0 20 - 40 x1 20 - 40 DC +0.5, -2.0 3.3V

011 0 1 20 - 60 x1 20 - 60 DC +0.25, -1.5 Both

011 1 0 10 - 20 x1 10 - 20 DC +0.5, -2.0 Both

011 1 1 10 - 30 x1 10 - 30 DC +0.25, -1.5 Both

100 0 0 20 - 37.5 x4 80 - 150 DC +0.25, -1.25 Both

100 0 1 20 - 40 x3 60 - 120 DC +0.25, -1.5 Both

100 1 0 10 - 30 x1 10 - 30 C ±0.75 Both

100 1 1 20 - 30 x1 20 - 30 D -0.5 Both

101 0 0 5 - 20 x2 10 - 40 DC +0.25, -2.25 3.3V

101 0 1 20 - 50 x3 60 - 150 D -0.25, -2.25 Both

101 1 0 20 - 37.5 x4 80 - 150 C ±0.75 Both

101 1 1 80 - 150 x1 80 - 150 DC +0.25, -1.25 Both

110 0 0 10 - 25 x4 40 - 100 C ±0.75 Both

110 0 1 10 - 20 x5 50 - 100 C ±0.75 Both

110 1 0 10 - 20 x6 60 - 120 C ±0.75 Both

110 1 1 20 - 50 x1 20 - 50 C ±0.75 Both

111 0 0 10 - 25 x4 40 - 100 DC +0.25, -1.5 Both

111 0 1 10 - 20 x5 50 - 100 DC +0.25, -1.25 Both

111 1 0 10 - 20 x6 60 - 120 D -1.5 Both

111 1 1 10 - 30 x1 10 - 30 C ±0.75 Both

P1-P3 P4-P6 P7-P8

MK1714-02RLFTR

Mfr. #:

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IC CLK MULT SPRD SPECTRUM 20QSOP

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MK1714-02RLFTR

MK1714-02RLFTR

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