ICS83947AYI-147 datasheet(7/10 Pages) ICST

Part #	ICS83947AYI-147

Description	LOW SKEW, 1-TO-9 LVCMOS/LVTTL FANOUT BUFFER

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Manufacturer	ICST [Integrated Circuit Systems]

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83947AYI-147

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REV. A SEPTEMBER 24, 2004

7

Integrated

Circuit

Systems, Inc.

ICS83947I-147

LOW SKEW, 1-TO-9

LVCMOS/LVTTL FANOUT BUFFER

APPLICATION SCHEMATIC EXAMPLE

Figure 1 shows an example of ICS83947I-147 application sche-

matic. In this example, the device is operated at V

CC=3.3V. The

decoupling capacitors should be located as close as possible

to the power pin. The input is driven by a 3.3V LVCMOS driver.

C4

0.1u

VCC

Zo = 50 Ohm

R3

43

R2

43

R1

43

C2

0.1u

(U1-22)

C3

0.1u

C1

0.1u

C3

0.1u

(U1-10)

VDDO

(U1-18)

C5

0.1u

VDDO

(U1-14)

Zo = 50

U1

ICS83947I-147

1

2

3

4

5

6

7

8

17

18

19

20

21

22

23

24

GND

CLK_SEL

CLK0

CLK1

CLK_EN

OE

VDD

GND

VDDO

Q5

GND

Q4

VDDO

Q3

GND

VCC

VDD=3.3V

LVCMOS

Zo = 50

Zo = 50 Ohm

(U1-27)

VDD

VDDO=3.3V

LVCMOS

C2

0.1u

(U1-31)

R3

43

For the LVCMOS output drivers, only one termination example

is shown in this schematic. Additional termination approaches

are shown in the LVCMOS Termination Application Note (refer

to ICS website).

FIGURE 1. ICS83947I-147 SCHEMATIC LAYOUT

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ICS83947AYI-147 Datasheet(PDF) 7 Page - Integrated Circuit Systems

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