MPC946FA ,Low voltage 1:10 CMOS clock driverLOGIC DIAGRAM(Int Pull Down)TCLK_Sel(Int Pull Up)÷1TCLK000÷2 3(Int Pull Up)1TCLK1 Qa0:2R1(Int Pull ..
MPC947 ,LOW VOLTAGE 1:9 CLOCK DISTRIBUTION CHIPfeatures the capability to select between two LVTTL compatible inputsand fans the signal out to 9 L ..
MPC947FA ,Low voltage 1:9 clock distribution chipfeatures the capability to select between two LVTTL compatible inputsand fans the signal out to 9 L ..
MPC947FA ,Low voltage 1:9 clock distribution chipLogic DiagramFUNCTION TABLES24 23 22 21 20 19 18 17GND 25 16 GNDTTL_CLK1_Sel InputQ2 26 15 Q60 TTL_ ..
MPC947FA ,Low voltage 1:9 clock distribution chip**SEMICONDUCTOR TECHNICAL DATA**! * * *The MPC947 is a 1:9 low voltage clock distribution chip. ..
MPC947FA ,Low voltage 1:9 clock distribution chipfeatures the capability to select between two LVTTL compatible inputsand fans the signal out to 9 L ..
MSP430F1222IDW ,16-bit Ultra-Low-Power Microcontroller, 4kB Flash, 256B RAM, 10 bit ADC, 1 USART SLAS361D − JANUARY 2002 − REVISED AUGUST 2004 Lo ..
MSP430F1222IPW ,16-bit Ultra-Low-Power Microcontroller, 4kB Flash, 256B RAM, 10 bit ADC, 1 USARTblock diagram, MSP430x11x2XIN XOUT V V RST/NMI P1/JTAG P2CCSS8 6ROSCOscillatorACLK 8KB Flash 256B R ..
MSP430F1222IPWR ,16-bit Ultra-Low-Power Microcontroller, 4kB Flash, 256B RAM, 10 bit ADC, 1 USARTblock diagram, MSP430x11x2XIN XOUT V V RST/NMI P1/JTAG P2CCSS8 6ROSCOscillatorACLK 8KB Flash 256B R ..
MSP430F1222IRHBR ,16-bit Ultra-Low-Power Microcontroller, 4kB Flash, 256B RAM, 10 bit ADC, 1 USARTfeaturesa powerful 16-bit RISC CPU, 16-bit registers, and constant generators that attribute to max ..
MSP430F1222IRHBT ,16-bit Ultra-Low-Power Microcontroller, 4kB Flash, 256B RAM, 10 bit ADC, 1 USART SLAS361D − JANUARY 2002 − REVISED AUGUST 2004 Lo ..
MSP430F122IDW ,16-Bit Ultra-Low-Power Microcontroller, 4kB Flash, 256B RAM, USART, Comparatorfeaturesa powerful 16-bit RISC CPU, 16-bit registers, and constant generators that attribute to max ..
MPC946FA
Low voltage 1:10 CMOS clock driver
SEMICONDUCTOR TECHNICAL DATA --
The MPC946 is a low voltage CMOS, 10 output clock buffer. The 10
outputs can be configured into a standard fanout buffer or into 1X and
1/2X combinations. The ten outputs were designed and optimized to drive
50Ω series or parallel terminated transmission lines. With output to output
skews of 350ps the MPC946 is an ideal clock distribution chip for
synchronous systems which need a tight level of skew from a large
number of outputs. For a similar product with more outputs consult the
MPC949 data sheet. Clock Distribution for Pentium Systems with PCI 2 Selectable LVCMOS/LVTTL Clock Inputs 350ps Output to Output Skew Drives up to 20 Independent Clock Lines Maximum Input/Output Frequency of 150MHz Tristatable Outputs 32–Lead TQFP Packaging 3.3V VCC Supply
With an output impedance of approximately 7Ω, in both the HIGH and
the LOW logic states, the output buffers of the MPC946 are ideal for
driving series terminated transmission lines. More specifically each of the
10 MPC946 outputs can drive two series terminated transmission lines.
With this capability, the MPC946 has an effective fanout of 1:20 in
applications using point–to–point distribution schemes.
The MPC946 has the capability of generating 1X and 1/2X signals from
a 1X source. The design is fully static, the signals are generated and
retimed inside the chip to ensure minimal skew between the 1X and 1/2X
signals. The device features selectability to allow the user to select the
ratio of 1X outputs to 1/2X outputs.
Two independent LVCMOS/LVTTL compatible clock inputs are available. Designers can take advantage of this feature to
provide redundant clock sources or the addition of a test clock into the system design. With the TCLK_Sel input pulled HIGH the
TCLK1 input is selected.
All of the control inputs are LVCMOS/LVTTL compatible. The Dsel pins choose between 1X and 1/2X outputs. A LOW on the
Dsel pins will select the 1X output. The MR/Tristate input will reset the internal flip flops and tristate the outputs when it is forced
HIGH.
The MPC946 is fully 3.3V compatible. 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 is a trademark of Intel Corporation.
