Datasheet > SY89809L_05

SY89809L_05

更新时间： 2024-11-05 04:30:07

品牌	Logo	应用领域
麦瑞 - MICREL		时钟驱动器
页数	文件大小	规格书
7页	104K
描述
3.3V 1:9 HIGH-PERFORMANCE, LOW-VOLTAGE BUS CLOCK DRIVER

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数据手册

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SY89809L_05 数据手册

Precision Edge^®

Micrel, Inc.

SY89809L

3.3V 1:9 HIGH-PERFORMANCE,

Precision Edge

LOW-VOLTAGE BUS CLOCK DRIVER

SY89809L

FEATURES

■ 3.3V core supply, 1.8V output supply for reduced

Precision Edge

power

■ LVPECL and HSTL inputs

■ 9 differential HSTL (low-voltage swing) output pairs

DESCRIPTION

■ HSTL outputs drive 50Ω to ground with no

The SY89809L is a High-Performance Bus Clock Driver

with 9 differential HSTL (High-Speed Transceiver Logic)

output pairs. The part is designed for use in low-voltage

(3.3V/1.8V) applications which require a large number of

outputs to drive precisely aligned, ultralow skew signals to

their destination. The input is multiplexed from either HSTL

or LVPECL (Low-Voltage Positive-Emitter-Coupled Logic)

by the CLK_SEL pin. The Output Enable (OE) is

synchronous so that the outputs will only be enabled/

disabled when they are already in the LOW state. This

avoids any chance of generating a runt clock pulse when

the device is enabled/disabled as can happen with an

asynchronous control.

offset voltage

■ 500MHz maximum clock frequency

■ Low part-to-part skew (200ps max.)

■ Low pin-to-pin skew (50ps max.)

■ Available in 32-pin TQFP package

LOGIC SYMBOL

CLK_SEL

The SY89809L features low pin-to-pin skew (50ps max.)

and low part-to-part skew (200ps max.)—performance

previously unachievable in a standard product having such

a high number of outputs. The SY89809L is available in a

single space saving package, enabling a lower overall cost

solution.

HSTL_CLK

/HSTL_CLK

Q0 – Q8

/Q0 – /Q8

LVPECL_CLK

LEN

/LVPECL_CLK

APPLICATIONS

■ High-performance PCs

■ Workstations

■ Parallel processor-based systems

■ Other high-performance computing

■ Communications

TRUTH TABLE

SIGNAL GROUPS

OE⁽¹⁾

CLK_SEL

Q₀– Q₈

LOW

/Q₀– /Q₈

HIGH

Level

HSTL

Direction

Input

Signal

HSTL_CLK, /HSTL_CLK

Q₀– Q₈, /Q₀– /Q₈

LOW

HIGH

HSTL

Output

Input

HSTL_CLK

LVPECL_CLK

/HSTL_CLK

/LVPECL_CLK

LVPECL

LVPECL_CLK, /LVPECL_CLK

CLK_SEL, OE

LVCMOS/LVTTL

Input

Note:

1. The OE (output enable) signal is synchronized with the low level of the

HSTL_CLK and LVPECL_CLK signal.

Precision Edge is a registered trademark of Micrel, Inc.

Rev.: E

Amendment: /0

M9999-092005

hbwhelp@micrel.com or (408) 955-1690

Issue Date: September 2005

12 3 4 5 6 7

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与SY89809L_05相关器件

型号	品牌	获取价格	描述	数据表
SY89809L_09	MICREL	获取价格	3.3V 1:9 High-Performance, Low-Voltage Bus Clock Driver
SY89809LHH	MICROCHIP	获取价格	IC,1:9 OUTPUT, DIFFERENTIAL,TQFP,32PIN,PLASTIC
SY89809LHH-TR	MICROCHIP	获取价格	LOW SKEW CLOCK DRIVER
SY89809LTC	MICREL	获取价格	3.3V 1:9 HIGH-PERFORMANCE, LOW-VOLTAGE BUS CLOCK DRIVER
SY89809LTC	MICROCHIP	获取价格	Low Skew Clock Driver
SY89809LTCTR	MICREL	获取价格	3.3V 1:9 HIGH-PERFORMANCE, LOW-VOLTAGE BUS CLOCK DRIVER
SY89809LTH	MICREL	获取价格	3.3V 1:9 HIGH-PERFORMANCE, LOW-VOLTAGE BUS CLOCK DRIVER
SY89809LTH	MICROCHIP	获取价格	89809 SERIES, LOW SKEW CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
SY89809LTHTR	MICREL	获取价格	3.3V 1:9 HIGH-PERFORMANCE, LOW-VOLTAGE BUS CLOCK DRIVER
SY89809LTH-TR	MICROCHIP	获取价格	89809 SERIES, LOW SKEW CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32

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