SL18860DCT Datasheet SL18860DCT, SL18860DC | P1-P3

Rev 1.8, March 16 , 2012 Page 1 of 12

400 West Cesar Chavez, Austin, TX 78701 1+(512) 416-8500 1+(512) 416-9669 www.silabs.com

SL18860DC

Key Features

• Low current consumption

- 2.7mA-typ (VDD=1.8V and CL=0)

• 1.7V to 3.65V power supply operation

• 10MHz to 52MHz CLKIN

• Supports LVCMOS and clipped sine wave inputs

• Suports 3 single-ended LVCMOS square wave

outputs

• OE1/2/3 functions for each CLKOUT1/2/3 outputs

• OE_OSC control pin to enable external TCXO/XO

• Ultra-Low phase noise

• Ultra low standby current

• 10-pin TDFN package (1.4x2.0x0.75 mm)

• Industrial -40 ºC to 85 ºC temperature range

Application

• Smart Mobile Handsets

• Multi-mode RF Clock Distribution

• Baseband Peripheral Clock Distribution

Description

The SL18860DC product is a high performance 3 output

clock distribution buffer and provides 3 outputs from a

single input clock by using SLI proprietary low phase

noise and low power dissipation circuit design.

The SL18860DC can be used in baseband mobile RF

applications including WLAN, Bluetooth and DVB-H as an

input clock reference. The product designed to isolate

each device driven by their clock outputs to minimize

interference between these devices.

Each of the clock buffer outputs can be individually

disabled by using OE1/2/3 control pins to reduce the

power consumption if the connected device does not need

the clock. The device operates from single power supply

from 1.7V to 3.65V and from -40 ºC to 85 ºC.

Benefits

• Fast Time-to-market

• Cost Reduction

• Low Power Dissipation

• Low Phase Noise

Block Diagram

CONTROL LOGIC

6

7 5

10

4

8

9

3

2 1

CLKOUT1

CLKOUT2

CLKOUT3

CLKIN

VDD VSS

OE2 OE3OE1

OE_OSC

3-Channel Clock Distribution Buffer

Rev 1.8, March 16 , 2012 Page 2 of 12

SL18860DC

Pin Configuration

10

9

8

7

1

2

3

4

CLKOUT3

CLKOUT2

CLKOUT1

OE2

VSS

VDD

CLKIN

OE_OSC

OE3

5

6

OE1

10-Pin TDFN Package Pinout

Pin Description

Number

Pin Name Pin Type Pin Description

1 VSS Power Power supply ground.

2 VDD Power 2.25 to 3.65V or 1.8V +/-5% positive power supply

3 CLKIN Input External clock input pin. VSS to VDD CMOS level.

4 OE_OSC Output

Crystal oscillator enable pin. If OE1=OE2=OE3=0 then OE_OSC=0.

OE_OSC=1 for all the other OE1/2/3 logic states.

5 OE3 Input

Output enable pin for CLKOUT3. The input has 150kΩ-typ on-chip pull-

down resistor.

6 OE1 Input

Output enable pin for CLKOUT1. The input has 150kΩ-typ on-chip pull-

down resistor.

7 OE2 Input

Output enable pin for CLKOUT2. The input has 150kΩ-typ on-chip pull-

down resistor.

8 CLKOUT1 Output Clock output-1. Clock frequency is the same as CLKIN.

9 CLKOUT2 Output Clock output-2. Clock frequency is the same as CLKIN.

10 CLKOUT3 Output Clock output-3. Clock frequency is the same as CLKIN.

Table 1. Truth Table for OE1/2/3, OE_OSC and CLKOUT1/2/3

OE1

(Input)

OE2

(Input)

OE3

(Input)

OE_OSC

(Output)

CLKOUT1

CLKOUT2

CLKOUT3

0

Hi-Z

1

0

1

CLOCK

Hi-Z

1

0

1

CLOCK

Hi-Z

…

1

CLOCK

Rev 1.8, March 16 , 2012 Page 3 of 12

SL18860DC

Absolute Maximum Ratings

Description Condition Min Max Unit

Supply voltage, VDD (Absolute)

-0.5 4.6 V

Supply voltage, VDD (Operation)

1.70 3.65 V

All Inputs and Outputs

-0.5 VDD+0.5 V

Ambient Operating Temperature

In operation, C-Grade -40 85 °C

Storage Temperature

No power is applied -65 150 °C

Junction Temperature

In operation, power is applied - 125 °C

Soldering Temperature

- 260 °C

ESD Rating (Human Body Model)

JEDEC22-A114D -4,000 4,000 V

ESD Rating (Charge Device Model)

JEDEC22-C101C -1,500 1,500 V

ESD Rating (Machine Model)

JEDEC22-A115D -200 200 V

DC Electrical Characteristics (I-Grade)

Unless otherwise stated VDD= 1.8V+/- 5% and Operation Temperature Range -40 to +85°C

Description Symbol Condition Min Typ Max Unit

Operating Voltage

VDD Operation range, 1.8V+/-5% 1.70 1.80 1.90 V

Operating Temperature

TA I-Grade -40 25 85 ºC

Input Low Voltage

VIL CMOS Level, Pins 3,5, 6 and 7 VSS - 0.3VDD V

Input High Voltage

VIH CMOS Level, Pins 3,5, 6 and 7 0.7VDD - VDD V

Output High Voltage

VOH IOH=-4mA , Pins 4, 8, 9 and 10 VDD-0.4 - - V

Output Low Voltage

VOL IOL=-4mA, Pins 4, 8, 9 and 10 - - 0.4 V

Input Leakage Current

ILH VIN=VDD, Pins 5, 6 and 7 -25 - 25 μA

Input Leakage Current

ILL VIN=GND, Pins 5, 6 and 7 -10 - 10 μA

Pull-Down Resistor

RPD Pins 5, 6 and 7 100 150 250 kΩ

Operating Supply Current

IDD1

CLKIN=26MHz,

OE1=OE2=OE3=1

- 2.7 - mA

Operating Supply Current

IDD2

OE1=OE2=OE3=0

CLKIN=Low or High

- - 1.0 µA

Input Capacitance

CIN Pins 5, 6 and 7 - 3 5 pF

Load Capacitance

CL CLKOUT1/2/3, Pins 8, 9 and 10 - 10 20 pF

SL18860DCT

SL18860DCT

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