PDF PCK942C Data sheet ( Hoja de datos )

Número de pieza	PCK942C
Descripción	Low voltage 1 : 18 clock distribution chip
Fabricantes	NXP Semiconductors
Logotipo
Hay una vista previa y un enlace de descarga de PCK942C (archivo pdf) en la parte inferior de esta página. Total 11 Páginas
No Preview Available ! PCK942C www.DataSheet4U.com Low voltage 1 : 18 clock distribution chip Rev. 01 — 15 February 2006 Product data sheet 1. General description The PCK942C is a 1 : 18 low voltage clock distribution chip with 2.5 V or 3.3 V LVCMOS output capabilities. The device is offered in two versions: the PCK942C has an LVCMOS input clock, while the PCK942P has an LVPECL input clock. The 18 outputs are 2.5 V or 3.3 V LVCMOS compatible and feature the drive strength to drive 50 Ω series or parallel terminated transmission lines. With output-to-output skews of 200 ps, the PCK942C is ideal as a clock distribution chip for the most demanding of synchronous systems. The 2.5 V outputs also make the device ideal for supplying clocks for a higher performance Pentium II microprocessor based design. With a low output impedance of approximately 12 Ω, in both the HIGH and LOW logic states, the output buffers of the PCK942C are ideal for driving series terminated transmission lines. With an output impedance of 12 Ω the PCK942C can drive two series terminated transmission lines from each output. This capability gives the PCK942C an effective fan-out of 1 : 36. The PCK942C provides enough copies of low skew clocks for most high performance synchronous systems. The LVCMOS/LVTTL input of the PCK942C provides a more standard LVCMOS interface. The OE pin will place the outputs into a high-impedance state. The OE pin has an internal pull-up resistor. The PCK942C is a single supply device. The VCC power pins require either 2.5 V or 3.3 V. The 32-lead LQFP package was chosen to optimize performance, board space, and cost of the device. The 32-lead LQFP package has a 7 mm × 7 mm body size with a conservative 0.8 mm pin spacing. 2. Features s LVCMOS/LVTTL clock input s 2.5 V LVCMOS outputs for Pentium II microprocessor support s 150 ps maximum targeted output-to-output skew s Maximum output frequency of 250 MHz @ 3.3 V VCC s 32-lead LQFP packaging s Single 3.3 V or 2.5 V supply voltage 1 page Philips Semiconductors www.DataSheet4U.com PCK942C Low voltage 1 : 18 clock distribution chip 9. Dynamic characteristics Table 7: Dynamic characteristics (2.5 V) Tamb = 0 °C to 70 °C; VCC = 2.5 V ± 5 % Symbol Parameter Conditions Min Typ Max Unit foper(max) maximum operating frequency - - 200 MHz tPLH LOW-to-HIGH propagation delay 1.5 - 2.8 ns tsk(o) tsk(pr) δo tr tf output skew time process skew time output duty cycle rise time fall time output-to-output part-to-part part-to-part output output - [1] [2] - [1] [3] - 45 0.2 0.2 - - - - - - 200 ps 1.3 ns 600 ps 55 % 1.0 ns 1.0 ns [1] Tested using standard input levels, production tested @ 133 MHz. [2] Across temperature and voltage ranges, includes output skew. [3] For a speciﬁc temperature and voltage, includes output skew. Table 8: Dynamic characteristics (3.3 V) Tamb = 0 °C to 70 °C; VCC = 3.3 V ± 5 % Symbol Parameter Conditions Min Typ Max Unit foper(max) maximum operating frequency - - 250 MHz tPLH LOW-to-HIGH propagation delay 1.3 - 2.3 ns tsk(o) tsk(pr) δo tr tf output skew time process skew time output duty cycle rise time fall time output-to-output part-to-part part-to-part output output - [1] [2] - [1] [3] - 45 0.2 0.2 - - - - - - 200 ps 1.0 ns 500 ps 55 % 1.0 ns 1.0 ns [1] Tested using standard input levels, production tested @ 133 MHz. [2] Across temperature and voltage ranges, includes output skew. [3] For a speciﬁc temperature and voltage, includes output skew. PCK942C_1 Product data sheet Rev. 01 — 15 February 2006 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. 5 of 11 5 Page Philips Semiconductors 19. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 5 Pinning information . . . . . . . . . . . . . . . . . . . . . . 2 5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 Functional description . . . . . . . . . . . . . . . . . . . 3 6.1 Function table . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 3 8 Static characteristics. . . . . . . . . . . . . . . . . . . . . 4 9 Dynamic characteristics . . . . . . . . . . . . . . . . . . 5 10 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 6 11 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 11.1 Introduction to soldering surface mount packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 11.2 Reﬂow soldering . . . . . . . . . . . . . . . . . . . . . . . . 7 11.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . . 7 11.4 Manual soldering . . . . . . . . . . . . . . . . . . . . . . . 8 11.5 Package related soldering information . . . . . . . 8 12 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . 9 14 Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 10 15 Deﬁnitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 16 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 17 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 18 Contact information . . . . . . . . . . . . . . . . . . . . 10 www.DataSheet4U.com PCK942C Low voltage 1 : 18 clock distribution chip © Koninklijke Philips Electronics N.V. 2006 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Date of release: 15 February 2006 Document number: PCK942C_1 Published in The Netherlands 11 Page

Páginas	Total 11 Páginas
PDF Descargar	[ Datasheet PCK942C.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
PCK942C	Low voltage 1 : 18 clock distribution chip	NXP Semiconductors

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar