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IDT49FCT3805D/E

3.3V CMOS DUAL 1-TO-5 CLOCK DRIVER

INDUSTRIALTEMPERATURERANGE

SEPTEMBER 2004

2004 Integrated Device Technology, Inc.

DSC-5864/19

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IDT49FCT3805D/E

INDUSTRIAL TEMPERATURE RANGE

3.3V CMOS DUAL

1-TO-5 CLOCK DRIVER

FUNCTIONAL BLOCK DIAGRAM

5

MON

5

PIN CONFIGURATION

1

2

3

4

5

6

7

8

9

MON

11

12

13

14

15

16

17

18

19

20

10

SSOP/ QSOP

TOP VIEW

FEATURES:

• Advanced CMOS Technology

• Guaranteed low skew < 200ps (max.)

• Very low propagation delay < 2.5ns (max)

• Very low duty cycle distortion < 270ps (max)

• Very low CMOS power levels

• Operating frequency up to 166MHz

• TTL compatible inputs and outputs

• Inputs can be driven from 3.3V or 5V components

• Two independent output banks with 3-state control

• 1:5 fanout per bank

• "Heartbeat" monitor output

• Available in SSOP and QSOP packages

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

DESCRIPTION:

The FCT3805 is a 3.3 volt clock driver built using advanced CMOS

technology. The device consists of two banks of drivers, each with a 1:5 fanout

and its own output enable control. The device has a "heartbeat" monitor for

diagnostics and PLL driving. The MON output is identical to all other outputs

andcomplieswiththeoutputspecificationsinthisdocument. TheFCT3805offers

low capacitance inputs.

The FCT3805 is designed for high speed clock distribution where signal

quality and skew are critical. The FCT3805 also allows single point-to-point

transmissionlinedrivinginapplicationssuchasaddressdistribution,whereone

signal must be distributed to multiple recievers with low skew and high signal

quality.

For more information on using the FCT3805 with two different input

frequencies on bank A and B, please see AN-236.