MPC940LFA Freescale Semiconductor, MPC940LFA Datasheet

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MPC940LFA

Manufacturer Part Number
MPC940LFA
Description
IC CLOCK DISTRIB LV 1:18 32-LQFP
Manufacturer
Freescale Semiconductor
Type
Clock Distributionr
Datasheet

Specifications of MPC940LFA

Input
LVCMOS, LVPECL
Output
LVCMOS
Frequency - Max
250MHz
Voltage - Supply
2.375 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
32-LQFP
Frequency-max
250MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MPC940LFA
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MPC940LFAR2
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
Low Voltage 1:18 Clock
Distribution Chip
3.3V LVCMOS output capabilities. The device features the capability to
select either a differential LVPECL or an LVCMOS compatible input. The
18 outputs are 2.5V or 3.3V LVCMOS compatible and feature the drive
strength to drive 50
With output–to–output skews of 150ps, the MPC940L is ideal as a clock
distribution chip for the most demanding of synchronous systems. The
2.5V outputs also make the device ideal for supplying clocks for a high
performance microprocessor based design. For a similar device at a
lower price/performance point the reader is referred to the MPC9109.
states, the output buffers of the MPC940L are ideal for driving series
terminated transmission lines. With a 20
has the capability of driving two series terminated lines from each output.
This gives the device an effective fanout of 1:36. If a lower output
impedance is desired please see the MPC942 data sheet.
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 to provide for 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. All inputs of the MPC940L have internal pullup/pulldown
resistor so they can be left open if unused.
operate with a 3.3V core and 3.3V output, a 3.3V core and 2.5V outputs as well as a 2.5V core and 2.5V outputs. The 32–lead
LQFP package was chosen to optimize performance, board space and cost of the device. The 32–lead LQFP has a 7x7mm body
size with a conservative 0.8mm pin spacing.
01/01
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 2001
LVPECL or LVCMOS Clock Input
2.5V LVCMOS Outputs for Pentium II Microprocessor Support
150ps Maximum Output–to–Output Skew
Maximum Output Frequency of 250MHz
32–Lead LQFP Packaging
Dual or Single Supply Device:
The MPC940L is a 1:18 low voltage clock distribution chip with 2.5V or
With a low output impedance ( 20 ), in both the HIGH and LOW logic
The differential LVPECL inputs of the MPC940L allow the device to interface directly with a LVPECL fanout buffer like the
The MPC940L is a single or dual supply device. The device power supply offers a high degree of flexibility. The device can
Dual V CC Supply Voltage, 3.3V Core and 2.5V Output
Single 3.3V V CC Supply Voltage for 3.3V Outputs
Single 2.5V V CC Supply Voltage for 2.5V I/O
series or parallel terminated transmission lines.
Freescale Semiconductor, Inc.
For More Information On This Product,
1
output impedance the 940L
Go to: www.freescale.com
REV 3
DISTRIBUTION CHIP
32–LEAD LQFP PACKAGE
MPC940L
LOW VOLTAGE
1:18 CLOCK
CASE 873A–02
FA SUFFIX
Order this document
by MPC940L/D

Related parts for MPC940LFA

MPC940LFA Summary of contents

Page 1

... Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Low Voltage 1:18 Clock Distribution Chip The MPC940L is a 1:18 low voltage clock distribution chip with 2.5V or 3.3V LVCMOS output capabilities. The device features the capability to select either a differential LVPECL or an LVCMOS compatible input. The 18 outputs are 2 ...

Page 2

... Freescale Semiconductor, Inc. MPC940L PECL_CLK PECL_CLK LVCMOS_CLK LVCMOS_CLK_Sel (Internal Pulldown) Pinout: 32–Lead TQFP (Top View GNDO MPC940L VCCO For More Information On This Product, MOTOROLA LOGIC DIAGRAM VCCO FUNCTION TABLE 15 Q12 LVCMOS_CLK_Sel 14 Q13 13 Q14 12 GNDO POWER SUPPLY VOLTAGES 11 Q15 10 Q16 9 Q17 PIN CONFIGURATIONS ...

Page 3

... Freescale Semiconductor, Inc. ABSOLUTE MAXIMUM RATINGS* Symbol Parameter V CC Supply Voltage V I Input Voltage I IN Input Current T Stor Storage Temperature Range * Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute– ...

Page 4

... Freescale Semiconductor, Inc. MPC940L DC CHARACTERISTICS ( CCI = 3.3V 5%; V CCO = 2.5V 5%) Symbol Characteristic V IH Input HIGH Voltage V IL Input LOW Voltage V PP Peak–to–Peak Input Voltage V CMR Common Mode Range V OH Output HIGH Voltage V OL Output LOW Voltage I IN Input Current ...

Page 5

... Freescale Semiconductor, Inc. DC CHARACTERISTICS ( CCI = 2.5V 5%; V CCO = 2.5V 5%) Symbol Characteristic V IH Input HIGH Voltage V IL Input LOW Voltage V PP Peak–to–Peak Input Voltage V CMR Common Mode Range V OH Output HIGH Voltage V OL Output LOW Voltage I IN Input Current C IN ...

Page 6

... Freescale Semiconductor, Inc. MPC940L Pulse Generator Figure 1. LVCMOS_CLK MPC940L AC test reference for 3.3V and 2.5V Differential Pulse Generator Figure 2. PECL_CLK MPC940L AC test reference for 3.3V and 2.5V PECL_CLK V PP PECL_CLK Figure 3. Propagation delay ( test reference 100% The time from the PLL controlled edge to the non controlled ...

Page 7

... Freescale Semiconductor, Inc –T– DETAIL –Z– –AB– SEATING –AC– PLANE 0.10 (0.004 DETAIL AD For More Information On This Product, TIMING SOLUTIONS DL207 — Rev 0 OUTLINE DIMENSIONS FA SUFFIX QFP PACKAGE CASE 873A–02 ISSUE A 4X 0.20 (0.008) AB T–U ...

Page 8

... Freescale Semiconductor, Inc. MPC940L Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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