Datasheet > MPC940L

MPC940L

更新时间： 2024-09-28 22:51:11

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		时钟
页数	文件大小	规格书
5页	95K
描述
LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP

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MPC940L 数据手册

SEMICONDUCTOR TECHNICAL DATA

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

LVCMOS output capabilities. The device features the capability to select

either a differential LVPECL or an LVTTL/ LVCMOS compatible input. The

18 outputs are 2.5V LVCMOS compatible and feature the drive strength

to drive 50Ω series or parallel terminated transmission lines. With

output–to–output skews of 150ps, the MPC940L is ideal as a clock

distribution chip for the most demanding of synchronous systems. The

2.5V outputs also make the device ideal for supplying clocks for a high

performance Pentium II microprocessor based design.

LOW VOLTAGE

1:18 CLOCK

DISTRIBUTION CHIP

• LVPECL or LVCMOS/LVTTL Clock Input

• 2.5V LVCMOS Outputs for Pentium II Microprocessor Support

• 150ps Maximum Targeted Output–to–Output Skew

• Maximum Output Frequency of 250MHz

• 32–Lead TQFP Packaging

FA SUFFIX

32–LEAD TQFP PACKAGE

CASE 873A–02

• Dual V

Supply Voltage, 3.3V Core and 2.5V Output

With a low output impedance (≈30Ω), in both the HIGH and LOW logic

states, the output buffers of the MPC940L are ideal for driving series

terminated transmission lines. With this drive capability, the MPC940L

provides enough copies of low skew clocks for most high performance

synchronous systems.

The differential LVPECL inputs of the MPC940L allow the device to interface directly 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/LVTTL 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 TTL level clock input.

The MPC940L is a dual supply device. The core V

power pins (VCCI) require 3.3V with the output V pins (VCCO)

requiring 2.5V. The 32–lead TQFP package was chosen to optimize performance, board space and cost of the device. The

32–lead TQFP has a 7x7mm body size with a conservative 0.8mm pin spacing.

Pentium II is a trademark of Intel Corporation.

This document contains information on a new product. Specifications and information herein are subject to

change without notice.

10/97

REV 0

Motorola, Inc. 1997

12 3 4 5

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与MPC940L相关器件

型号	品牌	获取价格	描述	数据表
MPC940LAC	IDT	获取价格	LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP
MPC940LACR2	IDT	获取价格	LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP
MPC940LFA	IDT	获取价格	LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP
MPC940LFAR2	IDT	获取价格	LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP
MPC941	MOTOROLA	获取价格	LOW VOLTAGE 1:27 CLOCK DISTRIBUTION CHIP
MPC941AE	NXP	获取价格	941 SERIES, LOW SKEW CLOCK DRIVER, 27 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48, 7 X 7
MPC941AER2	IDT	获取价格	TQFP-48, Reel
MPC941FA	IDT	获取价格	Low Skew Clock Driver, 941 Series, 27 True Output(s), 0 Inverted Output(s), PQFP48, 7 X 7
MPC941FA	NXP	获取价格	IC,1:27 OUTPUT,ECL,QFP,52PIN,PLASTIC
MPC941FA	MOTOROLA	获取价格	MPC900 SERIES, LOW SKEW CLOCK DRIVER, 27 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48, 7 X

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