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参数资料
| 型号： | MK74CB177RLF |
| 元件分类： | 时钟及定时 |
| 英文描述： | CB SERIES, LOW SKEW CLOCK DRIVER, 7 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28 |
| 封装： | 0.150 INCH, SSOP-28 |
| 文件页数： | 1/4页 |
| 文件大小： | 48K |
| 代理商： | MK74CB177RLF |
MK74CB177
OPTi Buffalo Clock Driver
MDS74CB177B
1
Revision 3038
Printed 3/3/98
MicroClock Division of ICS1271 Parkmoor Ave.San JoseCA95126(408)295-9800tel(408)295-9818fax
ICRO
CLOCK
Tiny 28 pin SSOP (150 mil) package
Single input to single output for early clock
Single input to seven output for CPU
Single input to eight output for PCI
Like outputs are skew matched to within 250ps
A, B, and C outputs matched to 500ps
3.3V±10% and/or 5V±10% supply voltage
Power Down stops seven A clock outputs
Each side (A, B+C) of eight clock drivers can run
from different supply voltages, making it possible
to have 3.3V and 5V amplitude clock outputs
from the same chip
Clock speeds up to 66.67 MHz
The MK74CB177 OPTi Buffalo is a monolithic high
speed clock driver which is ideal for Pentium systems which
use OPTi’s Viper N chip set. It consists of three clock drivers
capable of accepting different inputs to produce one, seven and
eight low-skew, non-inverting outputs. The single
input/output is used to maintain timing with the early CPU
clock. The special power down pin allows for the main PCI
drivers to be stopped for OPTi’s low power mode. When
combined with MicroClock’s MK1438 or other low jitter
clock synthesizer, the two chips form an unequaled high
performance clocking scheme for new processors. This chip
combines low jitter clocks with high fanout and mixed 3.3/5V
outputs for easy system design.
Many new Pentium systems require multiple outputs for CPU
and PCI clocks, plus an early CPU clock for the core logic.
This monolithic solution eliminates any concern for part-to-
part skew matching. The MK74CB177 is packaged in the tiny
28 pin SSOP, which uses the same board space as the narrow
16 pin SOIC. An added feature of the chip is the ability to
produce both 3.3V and 5V amplitude clocks by connecting 5V
to VDDA and 3.3V to VDDBC. See MAN03 for dual voltage
operation.
Block Diagram
Description
Features
Family of MicroClock Parts
The MK74CB177 OPTi Buffalo is designed to
be used with MicroClock’s clock synthesizer
devices, which will produce the CPU, memory,
and local bus clocks. MicroClock also makes the
MK74CB216 and MK74CB178 clock buffers.
Consult MicroClock for applications support.
VDDA
GNDA
QB1
QB2
QB3
QB4
QB5
QB0
QB6
INB
QA1
QA2
QA3
QA4
QA5
QA0
QA6
INA
VDDB
GNDB
QC0
INC
QA7
PDA06 (QA0-QA6)
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相关代理商/技术参数 |
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|---|---|
| MK74CB214 | 制造商:ICS 制造商全称:ICS 功能描述:Dual 1 to 7 Buffalo⑩ Clock Driver |
| MK74CB214R | 制造商:ICS 制造商全称:ICS 功能描述:Dual 1 to 7 Buffalo⑩ Clock Driver |
| MK74CB214RTR | 制造商:ICS 制造商全称:ICS 功能描述:Dual 1 to 7 Buffalo⑩ Clock Driver |
| MK74CB217 | 制造商:ICS 制造商全称:ICS 功能描述:Dual 1 to 8 Buffalo⑩ Clock Driver |
| MK74CB217R | 制造商:ICS 制造商全称:ICS 功能描述:Dual 1 to 8 Buffalo⑩ Clock Driver |
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