MPC942CAC
MPC942CAC Datasheet
Order this document by MPC942C/D
| Part | Datasheet |
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MPC942CAC |
MPC942CAC (pdf) |
| Related Parts | Information |
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MPC942CFA |
MPC942CFA |
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| Freescale Semiconductor, Inc... MOTOROLA Freescale Semiconductor, Inc. SEMICONDUCTOR TECHNICAL DATA Order this document by MPC942C/D Low Voltage 1:18 Clock Distribution Chip MPC942C The MPC942 is a 1:18 low voltage clock distribution chip with 2.5V or 3.3V LVCMOS output capabilities. The device is offered in two versions the MPC942C has an LVCMOS input clock while the MPC942P has a LVPECL input clock. The 18 outputs are 2.5V or 3.3V LVCMOS compatible and feature the drive strength to drive series or parallel terminated transmission lines. With skews of 200ps, the MPC942 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 Pentium II microprocessor based design. LOW VOLTAGE 1:18 CLOCK DISTRIBUTION CHIP • LVCMOS/LVTTL Clock Input • 2.5V LVCMOS Outputs for Pentium II Microprocessor Support • 150ps Maximum Targeted Skew • Maximum Output Frequency of 250MHz VCC • TQFP Packaging • Single 3.3V or 2.5V Supply With a low output impedance in both the HIGH and LOW logic states, the output buffers of the MPC942 are ideal for driving series terminated transmission lines. With an output impedance of the MPC942 can drive two series terminated transmission lines from each output. This capability gives the MPC942 an effective fanout of The MPC942 provides enough copies of low skew clocks for most high performance synchronous systems. FA SUFFIX TQFP PACKAGE CASE The LVCMOS/LVTTL input of the MPC942C provides a more standard LVCMOS interface. The OE pins will place the outputs into a high impedance state. The OE pin has an internal pullup resistor. The MPC942 is a single supply device. The VCC power pins require either 2.5V or 3.3V. The TQFP package was chosen to optimize performance, board space and cost of the device. The TQFP has a 7x7mm body size with a conservative 0.8mm pin spacing. Pentium II is a trademark of Intel Corporation. 02/01 Motorola, Inc. 2001 MPC942C Freescale Semiconductor, Inc. LOGIC DIAGRAM MPC942C Block Diagram LVCMOS_CLK OE Int. Pullup Q0 Q1:Q16 Q17 FUNCTION TABLE Output HIGH IMPEDANCE OUTPUTS ENABLED Pinout Top View 24 23 22 21 20 19 18 17 MPC942C 12345678 Freescale Semiconductor, Inc... LVCMOS_CLK ABSOLUTE MAXIMUM RATING Parameter VCC VI IIN TStor |
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