PCKEP14PW,112

Clock Buffers, Drivers Overview

The PCKEP14PW,112 is a low skew 1-to-5 differential clock driver manufactured by NXP USA Inc. in a TSSOP20 package. It accepts two clock sources via an input multiplexer and supports ECL, PECL, HSTL, and LVDS input signals. The device operates with VCC = 2.375 V to 3.8 V (VEE = 0 V) or VCC = 0 V (VEE = -2.375 V to -3.8 V). Key electrical parameters include a maximum toggle frequency exceeding 2 GHz, typical propagation delay of 400 ps, within-device skew of 25 ps, and part-to-part skew of 100 ps. It features synchronous enable logic referenced to the negative clock edge.

Clock Buffers, Drivers Feature Summary

• Low skew performance: 25 ps within-device and 100 ps part-to-part
• High-speed operation: Maximum toggle frequency > 2 GHz
• Flexible input support: Compatible with ECL, PECL, HSTL, and LVDS signals
• Synchronous enable: Prevents runt clock pulses during state transitions

Clock Buffers, Drivers Applications

• High-performance clock distribution in +3.3 V systems
• Clock distribution in +2.5 V systems
• NECL mode applications requiring negative supply rails

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix '112' against current manufacturer documentation to confirm specific tape-and-reel packaging details. Confirm that the TSSOP20 package variant aligns with the required PCB footprint dimensions for reflow soldering processes.

Clock Buffers, Drivers Selection Notes

Select this component when tight output-to-output skew specifications are critical. Ensure differential outputs are terminated identically into 50 Ω resistors to maintain specified skew limits. Verify that the system power supply allows for the required VCC and VEE voltage ranges for the chosen logic mode.

Clock Buffers, Drivers Part Context

This component belongs to the PCKEP14 family of differential clock drivers. The PW suffix specifically denotes the TSSOP20 plastic thin shrink small outline package (SOT360-1), distinguishing it from the SO20 package variant (PCKEP14D). Both variants share identical electrical characteristics and pin configurations.

Clock Buffers, Drivers Replacement Considerations

The PCKEP14D serves as a direct functional replacement if the SO20 package is acceptable. No other cross-model substitutes are documented in the provided datasheet.