MPC941FA Freescale, MPC941FA Datasheet

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MPC941FA

Manufacturer Part Number
MPC941FA
Description
Manufacturer
Freescale
Type
Clock Driverr
Datasheet

Specifications of MPC941FA

Number Of Clock Inputs
2
Output Frequency
250MHz
Output Logic Level
LVCMOS
Operating Supply Voltage (min)
2.375V
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.465V
Package Type
LQFP
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Signal Type
LVCMOS/LVPECL
Mounting
Surface Mount
Pin Count
48
Quiescent Current
5mA
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MPC941FA
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP
IDT™ / ICS™ CLOCK DISTRIBUTION CHIP
the capability to select either a differential LVPECL or an LVCMOS compatible
input. The 27 outputs are LVCMOS compatible and feature the drive strength to
drive 50 Ω series or parallel terminated transmission lines. With output-to-output
skews of 250 ps, the MPC941 is ideal as a clock distribution chip for the most
demanding of synchronous systems. For a similar product with a smaller number
of outputs, please consult the MPC940 data sheet.
output buffers of the MPC941 are ideal for driving series terminated transmission
lines. More specifically, each of the 27 MPC941 outputs can drive two series
terminated 50 Ω transmission lines. With this capability, the MPC941 has an
effective fanout of 1:54. With this level of fanout, the MPC941 provides enough
copies of low skew clocks for most high performance synchronous systems.
directly with an LVPECL fanout buffer like the MC100EP111 to build very wide
clock fanout trees or to couple to a high frequency clock source. The LVCMOS
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 as a test clock interface as well as the primary system clock.
A logic HIGH on the LVCMOS_CLK_Sel pin will select the LVCMOS level clock
input.
space and cost of the device. The 48-lead LQFP has a 7x7 mm body size.
The MPC941 is a 1:27 low voltage clock distribution chip. The device features
With a low output impedance, in both the HIGH and LOW logic states, the
The differential LVPECL inputs of the MPC941 allow the device to interface
The MPC941 is fully 3.3 V and 2.5 V compatible. The 48-lead LQFP package was chosen to optimize performance, board
48-Lead Pb-free Package Available
LVPECL or LVCMOS Clock Input
250 ps Maximum Output-to-Output Skew
Drives Up to 54 Independent Clock Lines
Maximum Output Frequency of 250 MHz
High Impedance Output Enable
Extended Temperature Range: –40°C to +85°C
48-Lead LQFP Packaging
3.3 V or 2.5 V V
CC
Supply Voltage
1
LOW VOLTAGE 3.3 V/2.5 V
48-LEAD LQFP PACKAGE
48-LEAD LQFP PACKAGE
DISTRIBUTION CHIP
Pb-FREE PACKAGE
1:27 CLOCK
CASE 932-03
CASE 932-03
AE SUFFIX
FA SUFFIX
MPC941 REV. 8 APRIL 29, 2008
SCALE 2:1
SCALE 2:1
MPC941

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MPC941FA Summary of contents

Page 1

LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP The MPC941 is a 1:27 low voltage clock distribution chip. The device features the capability to select either a differential LVPECL or an LVCMOS compatible input. The 27 outputs are LVCMOS compatible and feature ...

Page 2

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP PECL_CLK PECL_CLK LVCMOS_CLK LVCMOS_CLK_SEL Pinout: 48-Lead TQFP (Top View GND ...

Page 3

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP Table 2. Absolute Maximum Ratings Symbol V Supply Voltage Input Voltage Output Voltage OUT I DC Input Current Output Current OUT T Storage Temperature ...

Page 4

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP Table 4. AC Characteristics (V CC Symbol Characteristics f Maximum Output Frequency MAX LVCMOS_CLK Input Rise/Fall Time Propagation Delay PLH t PHL t Output Disable Time PLZ, ...

Page 5

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP Table 6. AC Characteristics (V CC Symbol Characteristics f Maximum Output Frequency MAX LVCMOS_CLK Input Rise/Fall Time Propagation Delay PLH t PHL t Output Disable Time PLZ, ...

Page 6

... With an output impedance of less than 20 Ω, the drivers can drive either parallel or series terminated transmission lines. For more information on transmission lines, the reader is referred to Freescale AN1091 in the Timing Solutions data book (DL207/D). In most high performance clock networks, point-to-point distribution of signals is the method of choice point-to- point scheme, either series terminated or parallel terminated transmission lines can be used ...

Page 7

... For a complete analysis of power consumption as a function of operating conditions and associated long term device reliability, please refer to the Freescale AN1545. According the AN1545, the long-term device reliability is a function of the die junction temperature: Table 7. Die Junction Temperature and MTBF Junction Temperature (° ...

Page 8

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP 300 T 250 f (AC) MAX 200 150 100 Safe operation 50 0 500 400 300 IFPM, CONVECTION Figure 4. Maximum MPC941 frequency 3.3 V, MTBF 9.1 years, CC driving series ...

Page 9

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP 300 250 f (AC) MAX 200 150 100 Safe operation 50 0 500 400 300 IFPM, CONVECTION Figure 8. Maximum MPC941 frequency 2.5 V, MTBF 9.1 years, CC driving series terminated ...

Page 10

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP Pulse Generator Z = 50Ω Figure 12. LVCMOS_CLK MPC941 AC Test Reference for V Differential Pulse Generator Z = 50Ω Figure 13. PECL_CLK MPC941 AC Test Reference for V PCLK_CLK V PP PCLK_CLK ...

Page 11

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP 4X 0.200 AB T 0.200 AC T BASE METAL 0.080 AC T-U ...

Page 12

MPC941 LOW VOLTAGE, 1:27 CLOCK DISTRIBUTION CHIP Contact Information: www.IDT.com Sales 800-345-7015 (inside USA) +408-284-8200 (outside USA) Fax: 408-284-2775 www.IDT.com/go/contactIDT © 2008 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT ...

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