PCK2002PD,112

Clock Buffers, Drivers Overview

The PCK2002P is a 1:4 fanout clock buffer designed for general-purpose and PCI-X applications, supporting operating frequencies up to 533 MHz. It distributes one buffered input clock signal (BUF_IN) to four independent output clocks (BUF_OUT0–3). The device operates on a single 3.3 V supply with a recommended range of 3.0 V to 3.6 V. Key performance metrics include a typical propagation delay of 2.9 ns at 3.3 V with a 25 pF load, low output skew under 200 ps, and part-to-part skew less than 500 ps. It features an active-low Output Enable (OE) pin and provides robust ESD protection exceeding 2000 V per HBM.

Clock Buffers, Drivers Feature Summary

• Supports PCI-X clock distribution with operating frequencies up to 533 MHz
• Low output skew (<200 ps) and part-to-part skew (<500 ps)
• Single 3.3 V operation with quiescent supply current of 50 µA typical
• ESD protection exceeds 2000 V Human Body Model (HBM)

Clock Buffers, Drivers Applications

• PCI-X system clock distribution
• General-purpose high-performance clock buffering
• Server and data center infrastructure

Clock Buffers, Drivers Procurement Notes

Verify the package variant against the order code: PCK2002PD corresponds to the 8-pin Plastic SO package (SOT96-1), while PCK2002PDP denotes the 8-pin TSSOP package (SOT505-1). Both variants share the same electrical specifications and operate within the -40 °C to +85 °C temperature range. Confirm that the design requires the specific 1:4 fanout configuration rather than other available ratios like 1:6 or 1:10.

Clock Buffers, Drivers Selection Notes

Select this component when a 1:4 fanout ratio is required for signals up to 533 MHz. Ensure the load capacitance on each output does not exceed 30 pF to maintain specified timing parameters. Compare with the PCK2001 series if higher fanout counts (up to 18 outputs) are needed, or if different package constraints apply. Verify that the 3.3 V logic levels align with the receiving devices' VIH/VIL requirements.

Clock Buffers, Drivers Part Context

This device belongs to the Philips Semiconductors (now NXP) PCK200x family of clock buffers. Related parts include the PCK2001 (48-pin, 1:18 fanout), PCK2001M (28-pin, 1:10 fanout), and PCK2001R (16-pin, 1:6 fanout). These components share similar electrical characteristics but differ in pin count and output drive capacity to suit various board density requirements.

Clock Buffers, Drivers Replacement Considerations

Direct functional substitutes within the same family include PCK2001, PCK2001M, and PCK2001R, provided the pinout and fanout ratio differences are accommodated by the design. No other cross-manufacturer equivalents are verified in the source documentation.