MK2308S-2 Datasheet MK2308S-2ILFT, MK2308S-2LFTR, MK2308S-2ILF | P1-P3

DATASHEET

ZERO DELAY, LOW SKEW BUFFER MK2308-2

IDT™

ZERO DELAY, LOW SKEW BUFFER 1

MK2308-2 REV E 051310

Description

The MK2308-2 is a low jitter, low skew, high performance

Phase-Lock Loop (PLL) based zero delay buffer for high

speed applications. Based on IDT’s proprietary low jitter

PLL techniques, the device provides eight low skew outputs

at speeds up to 133.3 MHz at 3.3 V. The MK2308-2

includes a bank of four outputs running at 1/2X. In the zero

delay mode, the rising edge of the input clock is aligned

with the rising edges of all eight outputs. Compared to

competitive CMOS devices, the MK2308-2 has the lowest

jitter.

Features

• Packaged in 16-pin SOIC

• Pb (lead) free package

• Zero input-output delay

• Four 1X outputs plus four 1/2X outputs

• Output to output skew is less than 250 ps

• Output clocks up to 133.3 MHz at 3.3 V

• Ability to generate 2X the input

• Full CMOS outputs with 18 mA output drive capability at

TTL levels at 3.3 V

• Spread Smart

technology works with spread spectrum

clock generators

• Advanced, low power, sub micron CMOS process

• Operating voltage of 3.3 V

Block Diagram

CLKA4

CLKB1

CLKA3

CLKB2

CLKB3

CLKA2

CLKA1

CLKB4

Control

Logic

S2, S1

PLL

FBIN

CLKIN

VDD

GND

BANK

MK2308-2

ZERO DELAY, LOW SKEW BUFFER ZDB

IDT™

ZERO DELAY, LOW SKEW BUFFER 2

MK2308-2 REV E 051310

Pin Assignment Feedback Configuration Table

Output Clock Mode Select Table

Pin Descriptions

GND

CLKA1

CLKA4

CLKA3

VDD

CLKB3CLKB2

FBIN

CLKB1

CLKA2

CLKIN

VDD

CLKB4

GND

16-pin (150 mil) SOIC

Feedback From CLKA1:A4 CLKB1:B4

Bank A CLKIN CLKIN/2

Bank B 2XCLKIN CLKIN

S2 S1 Clocks A1:A4 Clocks B1:B4 Internet Generation PLL Status

0 0 Tri-state (high impedance) Tri-state (high impedance) None On

0 1 Running Tri-state (high impedance) PLL On

1 0 Running Running Buffer only (no zero delay) Off

1 1 Running Running PLL On

Number

Name

Type

Pin Description

1 CLKIN Input Clock input. Connect to input clock source.

2 - 3 CLKA1:A4 Output Clock A bank of four outputs.

4 VDD Power Power supply. Connect pin to same voltage as pin 13 (either 3.3 V ).

5 GND Power Connect to ground.

6 - 7 CLKB1:B4 Output Clock B bank of four outputs. These are low skew divide by two of bank A.

8 S2 Input Select input 2. Selects mode for outputs per table above.

9 S1 Input Select input 1. Selects mode for outputs per table above.

10 - 11 CLKB1:B4 Output Clock B bank of four outputs. These are low skew divide by two of bank A.

12 GND Power Connect to ground.

13 VDD Power Power supply. Connect pin to same voltage as pin 4 (either 3.3 V ).

14 - 15 CLKA1:A4 Output Clock A bank of four outputs.

16 FBIN Input Feedback input. Determines outputs per table above.

MK2308-2

ZERO DELAY, LOW SKEW BUFFER ZDB

IDT™

ZERO DELAY, LOW SKEW BUFFER 3

MK2308-2 REV E 051310

External Components

The MK2308-2 requires a minimum number of external components for proper operation. Decoupling capacitors of

0.1µF should be connected between VDD and GND, as close to the part as possible. A 33Ω series terminating

resistor should be used on each clock output to reduce reflections.

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the MK2308-2. These ratings, which are

standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at

these or any other conditions above those indicated in the operational sections of the specifications is not implied.

Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical

parameters are guaranteed only over the recommended operating temperature range.

Recommended Operation Conditions

DC Electrical Characteristics

VDD=3.3 V ±10%, Temp 0 to +70° /-40 to +85° C

Item Rating

Supply Voltage, VDD 7 V

All Inputs and Outputs -0.5 V to VDD+0.5 V

Ambient Operating Temperature 0 to +70 ° C

Storage Temperature -65 to +150 ° C

Junction Temperature 175 ° C

Soldering Temperature 260 ° C

Parameter Min. Typ. Max. Units

Ambient Operating Temperature 0 +70 ° C

Power Supply Voltage (measured in respect to GND) +3.0 +5.5 V

Parameter Symbol Conditions Min. Typ. Max. Units

Operating Voltage VDD 3.0 3.3 3.6 V

Input High Voltage V

CLKIN pin only (VDD/2)+1 VDD/2 V

Input Low Voltage V

CLKIN pin only VDD/2 (VDD/2)-1 V

Input High Voltage V

Input Low Voltage V

0.8 V

Output High Voltage V

= -18 mA 2.4 V

Output Low Voltage V

= 18 mA 0.4 V

Output High Voltage V

= -5 mA VDD-0.4 V

P1-P3 P4-P6

MK2308S-2

Mfr. #:

Buy MK2308S-2

Manufacturer:

Description:

IC PLL ZD BUFFER HS 16-SOIC

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

MK2308S-2

MK2308S-2

Products related to this Datasheet