IC Phoenix
 
Home ›  MM157 > MPC948LFA,Low voltage 1:12 clock distribution chip
MPC948LFA Fast Delivery,Good Price
Part Number:
If you need More Quantity or Better Price,Welcom Any inquiry.
We available via phone +865332716050 Email
Partno Mfg Dc Qty AvailableDescript
MPC948LFAMOTN/a571avaiLow voltage 1:12 clock distribution chip


MPC948LFA ,Low voltage 1:12 clock distribution chipfeatures the capability to select either1:12 CLOCKa differential LVPECL or a LVTTL compatible input ..
MPC949 ,LOW VOLTAGE 1:15 PECL TO CMOS CLOCK DRIVERLogic Diagram Figure 2. 52–Lead Pinout (Top View)TCLK_SelTCLK0 (LVTTL)0÷101TCLK1 (LVTTL)÷21 39 38 3 ..
MPC949FA ,Low voltage 1:15 PECL to CMOS clock driverLogic Diagram Figure 2. 52–Lead Pinout (Top View)TCLK_SelTCLK0 (LVTTL)0÷101TCLK1 (LVTTL)÷21 39 38 3 ..
MPC949FA ,Low voltage 1:15 PECL to CMOS clock driverfeatures a low voltage PECL input, inaddition to its LVCMOS/LVTTL inputs, to allow it to be incorpo ..
MPC949FA ,Low voltage 1:15 PECL to CMOS clock driverfeatures selectabilityto allow the user to select the ratio of 1X outputs to 1/2X outputs.Two indep ..
MPC950 ,LOW VOLTAGE PLL CLOCK DRIVER**SEMICONDUCTOR TECHNICAL DATA * ** The MPC950/951 are 3.3V compatible, PLL based clock driver d ..
MSP430F1232IPWR ,16-bit Ultra-Low-Power Microcontroller, 8kB Flash, 256B RAM, 10 bit ADC, 1 USARTfeaturesa powerful 16-bit RISC CPU, 16-bit registers, and constant generators that attribute to max ..
MSP430F1232IRHBR ,16-bit Ultra-Low-Power Microcontroller, 8kB Flash, 256B RAM, 10 bit ADC, 1 USART        SLAS361D − JANUARY 2002 − REVISED AUGUST 2004 Lo ..
MSP430F1232IRHBT ,16-bit Ultra-Low-Power Microcontroller, 8kB Flash, 256B RAM, 10 bit ADC, 1 USART        SLAS361D − JANUARY 2002 − REVISED AUGUST 2004 Lo ..
MSP430F1232IRHBT ,16-bit Ultra-Low-Power Microcontroller, 8kB Flash, 256B RAM, 10 bit ADC, 1 USARTblock diagram, MSP430x11x2XIN XOUT V V RST/NMI P1/JTAG P2CCSS8 6ROSCOscillatorACLK 8KB Flash 256B R ..
MSP430F123IDW ,16-Bit Ultra-Low-Power Microcontroller, 8kB Flash, 256B RAM, USART, ComparatorMSP430x12xMIXED SIGNAL MICROCONTROLLERSLAS312C − JULY 2001 − REVISED SEPTEMBER 2004 Low Supply Vol ..
MSP430F123IDWR ,16-Bit Ultra-Low-Power Microcontroller, 8kB Flash, 256B RAM, USART, Comparatorfeaturesa powerful 16-bit RISC CPU, 16-bit registers, and constant generators that attribute to max ..


MPC948LFA
Low voltage 1:12 clock distribution chip
SEMICONDUCTOR TECHNICAL DATA- -
! -
The MPC948L is a 1:12 low voltage clock distribution chip. The device
is pin and function compatible with the MPC948 with the added feature of
2.5V output capabilities. The device features the capability to select either
a differential LVPECL or a LVTTL compatible input. The 12 outputs are
2.5V LVCMOS or LVTTL compatible and feature the drive strength to
drive 50Ω series terminated transmission lines. With output–to–output
skews of 350ps, the MPC948L is ideal as a clock distribution chip for the
most demanding of synchronous systems. Clock Distribution for Intel Microprocessors LVPECL or LVCMOS/LVTTL Clock Input 350ps Maximum Output–to–Output Skew Drives Up to 24 Independent Clock Lines Maximum Output Frequency of 150MHz Synchronous Output Enable Tristatable Outputs 32–Lead TQFP Packaging 2.5V Output Capability
With an output impedance of approximately 7Ω, in both the HIGH and
LOW logic states, the output buffers of the MPC948L are ideal for driving
series terminated transmission lines. More specifically, each of the 12
MPC948L outputs can drive two series terminated 50Ω transmission
lines. With this capability, the MPC948L has an effective fanout of 1:24 in
applications where each line drives a single load.
The differential LVPECL inputs of the MPC948L allow the device to interface directly with a LVPECL fanout buffer like the
MC100LVE111 to build very wide clock fanout trees or to couple to a high frequency clock source. The LVCMOS/LVTTL 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 TTL_CLK_Sel pin will select the TTL level clock input.
All of the control inputs are LVCMOS/LVTTL compatible. The MPC948L provides a synchronous output enable control to allow
for starting and stopping of the output clocks. A logic high on the Sync_OE pin will enable all of the outputs. Because this control
is synchronized to the input clock, potential output glitching or runt pulse generation is eliminated. In addition, for board level test,
the outputs can be tristated via the tristate control pin. A logic LOW applied to the Tristate input will force all of the outputs into
high impedance. Note that all of the MPC948L inputs have internal pullup resistors.
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.
The MPC948L features two independent power supplies; VCCI and VCCO. The VCCI pin powers the internal core logic and
must be tied to 3.3V. The VCCO pin powers the output buffer and can be tied to either 2.5V or 3.3V.
ic,good price


TEL:86-533-2716050      FAX:86-533-2716790
   

©2020 IC PHOENIX CO.,LIMITED