mk74cb218b Integrated Device Technology, mk74cb218b Datasheet

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mk74cb218b

Manufacturer Part Number
mk74cb218b
Description
Dual 1 To 8 Buffalo? Clock Driver
Manufacturer
Integrated Device Technology
Datasheet

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Part Number:
mk74cb218bRLF
Manufacturer:
IDT
Quantity:
176
DUAL 1 TO 8 BUFFALO™ CLOCK DRIVER
Description
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 ICS for more details.
The MK74CB218B can also act as a voltage translator,
since it is possible to run the inputs at 3.3 V and the outputs
at 2.5 V.
Block Diagram
IDT™ / ICS™ DUAL 1 TO 8 BUFFALO™ CLOCK DRIVER
QA0
QA1
QA2
QA3
QA4
QA5
QA6
QA7
INA
VDDA
OE
(all outputs)
GND
VDD
1
Features
Family of ICS Parts
The MK74CB218B Buffalo™ is designed to be used with
ICS’s clock synthesizer devices. The inputs of the Buffalo
are matched to the outputs of ICS clock synthesizers.
Consult ICS for applications support.
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
2.5 V or 3.3 V output voltages
Output Enable tri-states each bank of eight
Clock speeds up to 200 MHz
VDDB
INB
QB0
QB1
QB2
QB3
QB4
QB5
QB6
QB7
MK74CB218B REV A 052305
MK74CB218B
DATASHEET

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mk74cb218b Summary of contents

Page 1

... Output Enable tri-states each bank of eight • Clock speeds up to 200 MHz Family of ICS Parts The MK74CB218B Buffalo™ is designed to be used with ICS’s clock synthesizer devices. The inputs of the Buffalo are matched to the outputs of ICS clock synthesizers. Consult ICS for applications support. ...

Page 2

... For simplicity, series termination resistors are not shown for the outputs, but should be placed as close to the device as possible most critical to have the 0.01 µF decoupling capacitors closest connect to VDDA = connect to VDDB connect to VDD = connect to low inductance ground plane MK74CB218B REV A 052305 FAN OUT BUFFER B 0.01 µF G 0.01 µ ...

Page 3

... If not all outputs of the chip are used possible to operate the chip faster with larger loads. Consult ICS for your specific requirement. IDT™ / ICS™ DUAL BUFFALO™ CLOCK DRIVER 3 FAN OUT BUFFER MK74CB218B REV A 052305 ...

Page 4

... DUAL BUFFALO™ CLOCK DRIVER Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK74CB218B. 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. ...

Page 5

... JA θ FAN OUT BUFFER Min. Typ. Max. Units 0 200 MHz 100 250 ps 100 250 Min. Typ. Max. Units °C/W 100 °C/W 80 °C/W 67 °C/W 60 MK74CB218B REV A 052305 ...

Page 6

... Basic L 0.40 1.27 .016 α 0° 8° 0° aaa -- 0. Package Temperature 28-pin SSOP 0 to +70°C 28-pin SSOP 0 to +70°C 28-pin SSOP 0 to +70°C 28-pin SSOP 0 to +70°C MK74CB218B REV A 052305 Inches Max .069 .010 .059 .012 .010 .394 .244 .157 .050 8° 0.004 c ...

Page 7

... MK74CB218B DUAL BUFFALO™ CLOCK DRIVER Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) © ...

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