IDT49FCT3805B
COMMERCIALANDINDUSTRIALTEMPERATURERANGE
3.3VCMOSBUFFER/CLOCKDRIVER
3.3V CMOS
BUFFER/CLOCK DRIVER
IDT49FCT3805B
DESCRIPTION:
FEATURES:
The FCT3805B is a 3.3 volt, non-inverting clock driver built using
advanceddualmetalCMOStechnology. Thedeviceconsistsoftwobanks
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 and complies with the output
specifications in this document. The FCT3805B offers low capacitance
inputs with hysteresis.
• 0.5 MICRON CMOS Technology
• Guaranteed low skew < 500ps (max.)
• Very low duty cycle distortion < 1.0ns (max.)
• Very low CMOS power levels
• 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
• VCC = 3.3V ± 0.3V
The FCT3805B is designed for high speed clock distribution where
signal quality and skew are critical. The FCT3805B also allows single
point-to-point transmission line driving in applications such as address
distribution, whereonesignalmustbedistributedtomultiplerecieverswith
low skew and high signal quality.
• Available in SSOP, SOIC, and QSOP packages
For more information on using the FCT3805B with two different input
frequencies on bank A and B, please see AN-236.
FUNCTIONALBLOCKDIAGRAM
PINCONFIGURATION
VCCA
OA1
OA2
1
2
VCCB
OB1
20
19
OEA
5
OA1 - OA5
INA
3
4
18
17
OB2
OB3
OA3
GNDA
GNDB
OB4
16
15
14
13
12
11
5
6
OA4
OA5
5
INB
OB1 - OB5
MON
OB5
7
OEB
GNDQ
OEA
INA
MON
OEB
8
9
INB
10
SOIC/ SSOP/ QSOP
TOP VIEW
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COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGE
MAY 2010
1
c
2005 Integrated Device Technology, Inc.
DSC 6879/-
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