Datasheet > 逻辑 > 时钟驱动器> PCS2I9940LG-32-ER

PCS2I9940LG-32-ER

更新时间： 2024-11-01 07:03:35

品牌	Logo	应用领域
PULSECORE		时钟驱动器逻辑集成电路
页数	文件大小	规格书
13页	485K
描述
Low Voltage 1:18 Clock Distribution Chip

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PCS2I9940LG-32-ER 技术参数

生命周期：	Obsolete	包装说明：	7 X 7 MM, 0.80 MM HEIGHT, GREEN, TQFP-32
Reach Compliance Code：	unknown	风险等级：	5.84
其他特性：	IT CAN ALSO OPERATE WITH 2.5V	系列：	9940
输入调节：	DIFFERENTIAL LATCHED	JESD-30 代码：	S-PQFP-G32
长度：	7 mm	逻辑集成电路类型：	LOW SKEW CLOCK DRIVER
功能数量：	1	反相输出次数：
端子数量：	32	实输出次数：	18
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TQFP
封装形状：	SQUARE	封装形式：	FLATPACK, THIN PROFILE
传播延迟（tpd）：	5.2 ns	认证状态：	Not Qualified
Same Edge Skew-Max（tskwd）：	0.15 ns	座面最大高度：	1.2 mm
最大供电电压 (Vsup)：	3.465 V	最小供电电压 (Vsup)：	3.135 V
标称供电电压 (Vsup)：	3.3 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.8 mm	端子位置：	QUAD
宽度：	7 mm	最小 fmax：	250 MHz
Base Number Matches：	1

PCS2I9940LG-32-ER 数据手册

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September 2006

rev 1.1

PCS2I9940L

Low Voltage 1:18 Clock Distribution Chip

Features

With low output impedance (≈20Ω), in both the HIGH and

LOW logic states, the output buffers of the PCS2I9940L are

ideal for driving series terminated transmission lines. With a

20Ω output impedance the PCS2I9940L has the capability

of driving two series terminated lines from each output.

This gives the device an effective fanout of 1:36.

•

LVPECL or LVCMOS Clock Input

2.5V LVCMOS Outputs for Pentium II

Microprocessor Support*

•

150pS Maximum Output-to-Output Skew

Maximum Output Frequency of 250MHz

32 Lead LQFP & TQFP Packaging

Dual or Single Supply Device:

The differential LVPECL inputs of the PCS2I9940L allow

the device to interface directly with a LVPECL fanout buffer

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 PCS2I9940L

have internal pullup/pulldown resistor, so they can be left

open if unused.

Dual V_CCSupply Voltage, 3.3V Core and 2.5V

Output

•

Single 3.3V V_CCSupply Voltage for 3.3V Outputs

Single 2.5V V_CCSupply Voltage for 2.5V I/O

Pin and Function compatible to MPC940L,

MPC9109, CY29940 and CY29940-1

Functional Description

The PCS2I9940L is a 1:18 low Voltage Clock distribution

chip with 2.5V or 3.3V LVCMOS output capabilities. The

device features the capability to select either a differential

LVPECL or LVCMOS compatible input. The 18 outputs are

2.5V or 3.3V LVCMOS compatible and feature the drive

strength to drive 50Ω series or parallel terminated

transmission lines. With output-to-output skews of 150pS,

the PCS2I9940L 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 microprocessor based design.

The PCS2I9940L is a single or dual supply device. The

device power supply offers a high degree of flexibility. The

device can operate with a 3.3V core and 3.3V output, a

3.3V core and 2.5V outputs as well as a 2.5V core and

2.5V outputs. The 32-lead LQFP and TQFP Packages

were chosen to optimize performance, board space and

cost of the device. The 32-lead LQFP and TQFP Packages

have a 7x7mm²body size with conservative 0.8mm pin

spacing.

* Pentium II is a trademark of Intel Corporation

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018

www.pulsecoresemi.com

Notice: The information in this document is subject to change without notice.

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与PCS2I9940LG-32-ER相关器件

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PCS2I9940LG-32-ET	PULSECORE	获取价格	Low Voltage 1:18 Clock Distribution Chip
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PCS2I9942CG-32-LR	PULSECORE	获取价格	Low Voltage 1:18 Clock Distribution Chip
PCS2I9942CG-32-LT	PULSECORE	获取价格	Low Voltage 1:18 Clock Distribution Chip
PCS2I9942P	PULSECORE	获取价格	Low Voltage 1:18 Clock Distribution Chip
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