MK74CB218BR

MK74CB218BR Datasheet

MK74CB218B

Part	Datasheet
MK74CB218BR	MK74CB218BR (pdf)

Related Parts	Information
MK74CB218BRTR	MK74CB218BRTR

PDF Datasheet Preview
DUAL 1 TO 8 BUFFALO CLOCK DRIVER DATASHEET MK74CB218B The MK74CB218B Buffalo is a monolithic CMOS high speed clock driver. It consists of two identical single input to eight low-skew output, non-inverting clock drivers. This eliminates concerns of part to part matching in many systems. The MK74CB218B is packaged in the tiny 28-pin SSOP, which uses the same board space as the narrow 16-pin SOIC. The inputs can be connected together for a 1 to 16 fanout buffer. A quad 1 to 4, and PECL versions, are also available. Consult IDT for more details. The MK74CB218B can also act as a voltage translator, since it is possible to run the inputs at V and the outputs at V. • Packaged as 28-pin SSOP 150 mil body • Available in Pb lead free package • Dual one input to eight output clock drivers • Outputs are skew matched to within 250 ps • A outputs and B outputs matched to 250 ps • V or V output voltages • Output Enable tri-states each bank of eight • Clock speeds up to 200 MHz NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Family of IDT Parts The MK74CB218B Buffalo is designed to be used with IDT’s clock synthesizer devices. The inputs of the Buffalo are matched to the outputs of IDT clock synthesizers. Consult IDT for applications support. Block Diagram VDDA VDDB INA QA0 QA1 QA2 QA3 QA4 QA5 QA6 QA7 OE all outputs GND INB QB0 QB1 QB2 QB3 QB4 QB5 QB6 QB7 IDT / ICS DUAL 1 TO 8 BUFFALO CLOCK DRIVER MK74CB218B DUAL 1 TO 8 BUFFALO CLOCK DRIVER FAN OUT BUFFER Pin Assignment Suggested Layout INA 1 QA0 2 QA1 3 QA2 4 VDDA 5 VDDA 6 QA3 7 QA4 8 GND 9 GND 10 QA5 11 QA6 12 QA7 13 OE 14 Pin Descriptions VDDB VDDB 16 QB7 NOTE 33 ohm series termination resistors for each output are essential for operation. For simplicity, series termination resistors are not shown for the outputs, but should be placed as close to the device as possible. It is most critical to have the µF decoupling capacitors closest. A = connect to VDDA B = connect to VDDB V = connect to VDD G = connect to low inductance ground plane Pin Number Pin Name Pin Type Pin Description Input Clock input for eight A outputs. 2, 3, 4 QA0, QA1, QA2 Output Clock A outputs. VDDA Power supply for QA outputs. Connect to a voltage from V to VDD. Cannot exceed VDD. Ordering Information Part / Order Number MK74CB218BR* MK74CB218BRTR* MK74CB218BRLF MK74CB218BRLFTR Marking MK74CB218BR MK74CB218BRL Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel Package 28-pin SSOP 28-pin SSOP 28-pin SSOP 28-pin SSOP Temperature 0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C *NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT / ICS DUAL 1 TO 8 BUFFALO CLOCK DRIVER MK74CB218B DUAL 1 TO 8 BUFFALO CLOCK DRIVER FAN OUT BUFFER Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support Corporate Headquarters Integrated Device Technology, Inc. 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

PDF Datasheet Preview

DUAL 1 TO 8 BUFFALO CLOCK DRIVER

DATASHEET

MK74CB218B

The MK74CB218B Buffalo is a monolithic CMOS high speed clock driver. It consists of two identical single input to eight low-skew output, non-inverting clock drivers. This eliminates concerns of part to part matching in many systems. The MK74CB218B is packaged in the tiny 28-pin SSOP, which uses the same board space as the narrow 16-pin SOIC. The inputs can be connected together for a 1 to 16 fanout buffer.

A quad 1 to 4, and PECL versions, are also available. Consult IDT for more details.

The MK74CB218B can also act as a voltage translator, since it is possible to run the inputs at V and the outputs at V.
• Packaged as 28-pin SSOP 150 mil body
• Available in Pb lead free package
• Dual one input to eight output clock drivers
• Outputs are skew matched to within 250 ps
• A outputs and B outputs matched to 250 ps
• V or V output voltages
• Output Enable tri-states each bank of eight
• Clock speeds up to 200 MHz

NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Family of IDT Parts

The MK74CB218B Buffalo is designed to be used with IDT’s clock synthesizer devices. The inputs of the Buffalo are matched to the outputs of IDT clock synthesizers. Consult IDT for applications support.

Block Diagram

VDDA

VDDB

INA QA0 QA1 QA2 QA3 QA4 QA5 QA6 QA7

OE all outputs GND

INB QB0 QB1 QB2 QB3 QB4 QB5 QB6 QB7

IDT / ICS DUAL 1 TO 8 BUFFALO CLOCK DRIVER

MK74CB218B DUAL 1 TO 8 BUFFALO CLOCK DRIVER

FAN OUT BUFFER

Pin Assignment

Suggested Layout

INA 1 QA0 2 QA1 3 QA2 4 VDDA 5 VDDA 6 QA3 7 QA4 8 GND 9 GND 10 QA5 11 QA6 12 QA7 13 OE 14

Pin Descriptions

VDDB

VDDB
16 QB7

NOTE 33 ohm series termination resistors for each output are essential for operation. For simplicity, series termination resistors are not shown for the outputs, but should be placed as close to the device as possible. It is most critical to have the µF decoupling capacitors closest.

A = connect to VDDA

B = connect to VDDB

V = connect to VDD

G = connect to low
inductance ground plane

Pin Number

Pin Name

Pin Type

Pin Description

Input Clock input for eight A outputs.
2, 3, 4 QA0, QA1, QA2 Output Clock A outputs.

VDDA

Power supply for QA outputs. Connect to a voltage from V to VDD. Cannot exceed

VDD.
Ordering Information

Part / Order Number

MK74CB218BR* MK74CB218BRTR* MK74CB218BRLF MK74CB218BRLFTR

Marking

MK74CB218BR MK74CB218BRL

Shipping Packaging

Tubes Tape and Reel

Tubes Tape and Reel

Package
28-pin SSOP 28-pin SSOP 28-pin SSOP 28-pin SSOP

Temperature
0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C
*NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology IDT assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

IDT / ICS DUAL 1 TO 8 BUFFALO CLOCK DRIVER

MK74CB218B DUAL 1 TO 8 BUFFALO CLOCK DRIVER

FAN OUT BUFFER

Innovate with IDT and accelerate your future networks. Contact:

For Sales
800-345-7015 408-284-8200 Fax 408-284-2775

For Tech Support

Corporate Headquarters

Integrated Device Technology, Inc.
2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MK74CB218BR Datasheet file may be downloaded here without warranties.

Datasheet ID: MK74CB218BR 637488