MPC940L View Datasheet(PDF) - Integrated Device Technology

Part Name

Description

MFG CO.

MPC940L

LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP

Integrated Device Technology 

1 2 3 4 5 6 7 8 9 10

MPC940L

LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIPLOGIC DIAGRAM

PECL_CLK

PECL_CLK

0

LVCMOS_CLK

1

LVCMOS_CLK_SEL

(Internal Pulldown)

Pinout: 32-Lead LQFP (Top View)

Q0

16 Q1–Q16

Q17

GNDO

Q5

Q4

Q3

VCCO

Q2

Q1

Q0

24 23 22 21 20 19 18 17

25

16

26

15

27

14

28

MPC940L

13

29

12

30

11

31

10

32

9

12345678

VCCO

Q12

Q13

Q14

GNDO

Q15

Q16

Q17

FUNCTION TABLE

LVCMOS_CLK_SEL

Input

0

PECL_CLK

1

LVCMOS_CLK

POWER SUPPLY VOLTAGES

Supply Pin

Voltage Level

VCCI

VCCO

2.5 V or 3.3 V ± 5%

2.5 V or 3.3 V ± 5%

Table 1. Pin Configurations

Pin

PECL_CLK

PECL_CLK

LVCMOS_CLK

LVCMOS_CLK_SEL

Q0–Q17

VCCO

VCCI

GNDO

GNDI

I/O

Input

Input

Input

Output

Type

LVPECL

LVCMOS

LVCMOS

LVCMOS

Supply

Supply

Supply

Supply

Function

Reference Clock Input

Alternative Reference Clock Input

Selects Clock Source

Clock Outputs

Output Positive Power Supply

Core Positive Power Supply

Output Negative Power Supply

Core Negative Power Supply

IDT™ / ICS™ 1:18 CLOCK DISTRIBUTION CHIP

2

MPC940L REV 7 JUNE 5, 2007

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