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参数资料
| 型号： | MC10H646FN |
| 厂商： | MOTOROLA INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | PENTIUM MICROPROCESSOR PECL/TTL-TTL CLOCK DRIVER |
| 中文描述： | 10H SERIES, LOW SKEW CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQCC28 |
| 封装： | PLASTIC, LCC-28 |
| 文件页数： | 1/6页 |
| 文件大小： | 101K |
| 代理商： | MC10H646FN |
SEMICONDUCTOR TECHNICAL DATA
1
REV 1
Motorola, Inc. 1996
8/94
!
The MC10H/100H646 is a single supply, low skew translating 1:8 clock
driver. Devices in the Motorola H600 translator series utilize the 28–lead
PLCC for optimal power pinning, signal flow through and electrical
performance. The single supply H646 is similar to the H643, which is a
dual supply 1:8 version of the same function.
PECL/TTL–TTL Version of Popular ECLinPS
E111
Low Skew
Guaranteed Skew Spec
Tri–State Enable
Differential Internal Design
VBB Output
Single Supply
Extra TTL and ECL Power/Ground Pins
Matched High and Low Output Impedance
Meets Specifications Required to Drive the Pentium
Microprocessor
The H646 was designed specifically to drive series terminated
transmission lines. Special techniques were used to match the HIGH and
LOW output impedances to about 7ohms. This simplifies the choice of the
termination resistor for series terminated applications. To match the HIGH
and LOW output impedances, it was necessary to remove the standard
IOS limiting resistor. As a result, the user should take care in preventing an
output short to ground as the part will be permanently damaged.
The H646 device meets all of the requirements for driving the 60 and 66MHz Pentium Microprocessor. The device has no PLL
components, which greatly simplifies its implementation into a digital design. The eight copies of the clock allows for
point–to–point clock distribution to simplify board layout and optimize signal integrity.
The H646 provides differential PECL inputs for picking up LOW skew PECL clocks from the backplane and distributing it to
TTL loads on a daughter board. When used in conjunction with the MC10/100E111, very low skew, very wide clock trees can be
designed. In addition, a TTL level clock input is provided for flexibility. Note that only one of the inputs can be used on a single
chip. For correct operation, the unused input pins should be left open.
The Output Enable pin forces the outputs into a high impedance state when a logic 0 is applied.
The output buffers of the H646 can drive two series terminated, 50
transmission lines each. This capability allows the H646
to drive up to 16 different point–to–point clock loads. Refer to the Applications section for a more detailed discussion in this area.
The 10H version is compatible with MECL 10H
ECL logic levels. The 100H version is compatible with 100K levels.
MECL 10H and ECLinPS are trademarks of Motorola, Inc. Pentium is a trademark of Intel Corporation.
PENTIUM
MICROPROCESSOR
PECL/TTL–TTL
CLOCK DRIVER
FN SUFFIX
PLASTIC PACKAGE
CASE 776–02
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC10H646FNG | 功能描述:时钟驱动器及分配 PECL/TTL to TTL 1:9 Distribution Chip RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
| MC10H646FNR2 | 功能描述:时钟驱动器及分配 PECL/TTL to TTL 1:10 RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
| MC10H646FNR2G | 功能描述:时钟驱动器及分配 BBG ECL CLOCK DIST CHIP RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
| MC10H680FN | 功能描述:总线收发器 4-Bit Diff ECL / TTL RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
| MC10H680FNG | 功能描述:总线收发器 4-Bit Diff ECL / TTL Transceiver RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
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