IDT MK3807-01 User Manual

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DATASHEET

BUFFER/CLOCK DRIVER MK3807-01

Description

The MK3807-01 is a low skew 3.3 V, 1 to 10 fanout buffer.
The large fanout from a single input line reduces loading on
the input clock. The TTL level outputs reduce noise levels on
the part. Typical applications are clock and signal
distribution.

Block Diagram

Features

• Packaged in 20-pin SSOP

• Available in Pb (lead) free package

• 1 to 10 fanout buffer

• Maximum skew between outputs of same package 0.35

ns

• Maximum skew between outputs of different packages

0.75 ns

• Max propagation delay of 3.8 ns

• Operating voltage of 3.3 V

• Advanced, low power, CMOS process

• Industrial temperature range -40° C to +85° C

• Hysteresis on all inputs

CLK1

CLK2

CLK3

IN

CLK4

CLK5

CLK6

CLK7

CLK8

CLK9

CLK10

IDT™ / ICS™

BUFFER/CLOCK DRIVER 1

MK3807-01 REV D 060407

MK3807-01
BUFFER/CLOCK DRIVER FAN OUT BUFFER

Pin Assignment

1IN

GND CLK10

VDD GND

CLK2

GND

CLK3

VDD

CLK4 CLK6

GND

2

3CLK1

4

5

7

8

9

10

20 pin SOIC, SSOP, TSSOP

Pin Descriptions

Pin

Number

1 IN Input Clock input.

2 GND Power Connect to ground.

3 CLK1 Output Clock output.

4 VDD Power Connect to +3.3 V.

5 CLK2 Output Clock output.

6 GND Power Connect to ground.

7 CLK3 Output Clock output.

8 VDD Power Connect to +3.3 V.

9 CLK4 Output Clock output.

10 GND Power Connect to ground.

11 CLK5 Output Clock output.

12 CLK6 Output Clock output.

13 GND Power Connect to ground.

14 CLK7 Output Clock output.

15 VDD Power Connect to +3.3 V.

16 CLK8 Output Clock output.

17 GND Power Connect to ground.

18 CLK9 Output Clock output.

19 CLK10 Output Clock output.

20 VDD Power Connect to +3.3 V.

Pin

Name

20

19

18 CLK9

17

16

156

14

13

12

11

VDD

CLK8

VDD

CLK7

GND

CLK5

Pin

Type

Pin Description

IDT™ / ICS™

BUFFER/CLOCK DRIVER 2

MK3807-01 REV D 060407

MK3807-01
BUFFER/CLOCK DRIVER FAN OUT BUFFER

External Components

The MK3807-01 requires a minimum number of external
components for proper operation.

Decoupling Capacitors

Decoupling capacitors of 0.01µF must be connected
between VDD and GND, as close to these pins as possible.
For optimum device performance, the decoupling capacitors
should be mounted on the component side of the PCB.
Avoid the use of vias in the decoupling circuit.

Series Termination Resistor

When the PCB trace between the clock outputs and the
loads are over 1 inch, series termination should be used. To
series terminate a 50Ω trace (a commonly used trace
impedance) place a 33Ω resistor in series with the clock
line, as close to the clock output pin as possible. The
nominal impedance of the clock output is 20Ω.

PCB Layout Recommendations

For optimum device performance and lowest output phase
noise, the following guidelines should be observed.

1) The 0.01µF decoupling capacitors should be mounted on
the component side of the board as close to the VDD pins
as possible. No vias should be used between the
decoupling capacitors and VDD pins. The PCB trace to VDD
pin should be kept as short as possible, as should the PCB
trace to the ground via.

2) To minimize EMI, the 33Ω series termination resistor, (if
needed) should be placed close to the clock output.

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the MK3807-01. These ratings, which are
standard values for IDT 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.

Item Rating

Supply Voltage, VDD 7 V

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

Ambient Operating Temperature -40 to +85°C

Storage Temperature -65 to +150°C

Junction Temperature 125°C

Soldering Temperature 260°C

Recommended Operation Conditions

Parameter Min. Typ. Max. Units

Ambient Operating Temperature -40 +85 °C

Power Supply Voltage (measured in respect to GND) +3.135 +3.3 +3.465 V

IDT™ / ICS™

BUFFER/CLOCK DRIVER 3

MK3807-01 REV D 060407