MPC940LFA IDT, Integrated Device Technology Inc, MPC940LFA Datasheet

MPC940LFA

Manufacturer Part Number

MPC940LFA

Description

Manufacturer

IDT, Integrated Device Technology Inc

Type

Clock Driverr

Datasheet

1.MPC940LFA.pdf (11 pages)

Specifications of MPC940LFA

Number Of Clock Inputs

Output Frequency

250MHz

Output Logic Level

LVCMOS

Operating Supply Voltage (min)

2.375V

Operating Supply Voltage (typ)

2.5/3.3V

Operating Supply Voltage (max)

3.465V

Package Type

LQFP

Operating Temp Range

0C to 70C

Operating Temperature Classification

Commercial

Signal Type

LVCMOS/LVPECL

Mounting

Surface Mount

Pin Count

Quiescent Current

1mA

Lead Free Status / RoHS Status

Not Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

MPC940LFA

Manufacturer:

Freescale Semiconductor

Quantity:

10 000

Company:

BOSTOCK HK LIMITED

Part Number:

MPC940LFAR2

Manufacturer:

IDT, Integrated Device Technology Inc

Quantity:

10 000

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LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP

Pentium II is a trademark of Intel Corporation.

output capabilities. The device features the capability to select either a differential

LVPECL or an LVCMOS compatible input. The 18 outputs are 2.5 V or 3.3 V LVCMOS

compatible and feature the drive strength to drive 50 Ω series or parallel terminated

transmission lines. With output-to-output skews of 150 ps, the MPC940L is ideal as a

clock distribution chip for the most demanding of synchronous systems. The 2.5 V outputs

also make the device ideal for supplying clocks for a high performance microprocessor

based design. For a similar device at a lower price/performance point, the reader is

referred to the MPC9109.

•

output buffers of the MPC940L are ideal for driving series terminated transmission lines.

With a 20 Ω output impedance the 940L has the capability of driving two series terminated

lines from each output. This gives the device an effective fanout of 1:36. If a lower output

impedance is desired please see the MPC942 data sheet.

with a LVPECL fanout buffer like the MC100EP111 to build very wide clock fanout trees

or to couple to a high frequency clock source. The LVCMOS input provides a more standard interface for applications requiring only a

single clock distribution chip at relatively low frequencies. In addition, the two clock sources can be used to provide for a test clock

interface as well as the primary system clock. A logic HIGH on the LVCMOS_CLK_SEL pin will select the LVCMOS level clock input. All

inputs of the MPC940L have internal pullup/pulldown resistors so they can be left open if unused.

with a 3.3 V core and 3.3 V output, a 3.3 V core and 2.5 V outputs as well as a 2.5 V core and 2.5 V outputs. The 32-lead LQFP package

was chosen to optimize performance, board space and cost of the device. The 32-lead LQFP has a 7x7 mm body size with a conservative

0.8 mm pin spacing.

IDT™ / ICS™ 1:18 CLOCK DISTRIBUTION CHIP

The MPC940L is a 1:18 low voltage clock distribution chip with 2.5 V or 3.3 V LVCMOS

With a low output impedance (≈20 Ω), in both the HIGH and LOW logic states, the

The differential LVPECL inputs of the MPC940L allow the device to interface directly

The MPC940L is a single or dual supply device. The device power supply offers a high degree of flexibility. The device can operate

LVPECL or LVCMOS Clock Input

2.5 V LVCMOS Outputs for Pentium II Microprocessor Support

150 ps Maximum Output-to-Output Skew

Maximum Output Frequency of 250 MHz

32-Lead LQFP Packaging

32-Lead Pb-Free Package Available

•

Dual or Single Supply Device:

Dual V

Single 3.3 V V

Single 2.5 V V

Supply Voltage, 3.3 V Core and 2.5 V Output

Supply Voltage for 3.3 V Outputs

Supply Voltage for 2.5 V I/O

32-LEAD LQFP PACKAGE

DISTRIBUTION CHIP

Pb-FREE PACKAGE

MPC940L

LOW VOLTAGE

CASE 873A-04

1:18 CLOCK

MPC940L REV 7 JUNE 5, 2007

FA SUFFIX

AC SUFFIX

MPC940L

Related parts for MPC940LFA

MPC940LFA Summary of contents

Page 1

LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP The MPC940L is a 1:18 low voltage clock distribution chip with 2 3.3 V LVCMOS output capabilities. The device features the capability to select either a differential LVPECL or an LVCMOS compatible ...

Page 2

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP PECL_CLK PECL_CLK LVCMOS_CLK LVCMOS_CLK_SEL (Internal Pulldown) Pinout: 32-Lead LQFP (Top View GNDO MPC940L V 29 CCO ...

Page 3

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP Table 2. Absolute Maximum Ratings Symbol V Supply Voltage CC V Input Voltage I I Input Current IN T Storage Temperature Range Stor 1. Absolute maximum continuous ratings are those values beyond which ...

Page 4

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP Table 5. DC Characteristics (T = 0° to 70° Symbol Characteristic V Input HIGH Voltage IH V Input LOW Voltage IL V Peak-to-Peak Input Voltage PP V Common Mode Range CMR ...

Page 5

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP Table 7. DC Characteristics (T = 0° to 70° Symbol Characteristic V Input HIGH Voltage IH V Input LOW Voltage IL V Peak-to-Peak Input Voltage PP V Common Mode Range CMR ...

Page 6

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP Pulse Generator Z = 50Ω Figure 1. LVCMOS_CLK MPC940L AC Test Reference for V Differential Pulse Generator Z = 50Ω Figure 2. PECL_CLK MPC940L AC Test Reference for V PCLK_CLK V PP PCLK_CLK ...

Page 7

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP IDT™ / ICS™ 1:18 CLOCK DISTRIBUTION CHIP PACKAGE DIMENSIONS CASE 873A-04 ISSUE C 32-LEAD LQFP PACKAGE 7 PAGE MPC940L REV 7 JUNE 5, 2007 ...

Page 8

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP IDT™ / ICS™ 1:18 CLOCK DISTRIBUTION CHIP PACKAGE DIMENSIONS CASE 873A-04 ISSUE C 32-LEAD LQFP PACKAGE 8 PAGE MPC940L REV 7 JUNE 5, 2007 ...

Page 9

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP IDT™ / ICS™ 1:18 CLOCK DISTRIBUTION CHIP PACKAGE DIMENSIONS CASE 873A-04 ISSUE C 32-LEAD LQFP PACKAGE 9 PAGE MPC940L REV 7 JUNE 5, 2007 ...

Page 10

... MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP Ordering Information Table 9. Ordering Information Part/Order Number Marking MPC940LFA MPC940L MPC940LFAR2 MPC940L MPC940LAC MPC940LAC MPC940LACR2 MPC940LAC IDT™ / ICS™ 1:18 CLOCK DISTRIBUTION CHIP Package Shipping Packaging 32 Lead LQFP Tray 32 Lead LQFP 2500 Tape & Reel ...

Page 11

MPC940L LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 netcom@idt.com 408-284-8200 480-763-2056 Fax: 408-284-2775 Corporate Headquarters Asia Pacific and Japan Integrated Device Technology, Inc. Integrated Device ...

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