MPC962305D-1H

Overview

The MPC962305D-1H is a low-cost, single-supply 3.3 V zero-delay buffer manufactured by Motorola (now Freescale/NXP). It functions as a 1:5 LVCMOS clock distribution device featuring an on-chip PLL that locks to a reference input presented on the REF pin. The -1H suffix indicates a high-drive version capable of operating at frequencies up to 133 MHz with faster rise and fall times compared to standard variants. The component accepts one reference input and drives five buffered outputs while maintaining low skew characteristics suitable for CPU and PCI bus applications.

Feature Summary

• Zero-delay buffering with internal PLL feedback from CLKOUT to REF
• High-drive output capability supporting frequencies up to 133 MHz
• Low output-to-output skew guaranteed at 250 ps maximum
• Single 3.3 V supply operation with power-down mode below 25 µA

Applications

• Distribution of high-speed clocks in systems compatible with Pentium-based architectures
• Clock distribution for CPU and PCI bus frequencies ranging from 10 MHz to 133 MHz
• Spread spectrum clocking applications

Procurement Notes

Verify manufacturing origin as this part was originally produced by Motorola and later transitioned through Freescale Semiconductor before being acquired by NXP. Confirm current availability status as legacy timing solutions may be subject to discontinuation or limited stock. Ensure compatibility with existing PCB footprints for the 8-pin SOIC package when sourcing replacements.

Selection Notes

Select the MPC962305D-1H over the base MPC962305D-1 model when higher drive strength and faster signal transitions are required for loads exceeding standard specifications. Verify that the system design supports the 3.3 V supply voltage range of 3.0 V to 3.6 V. Consider the 8-pin SOIC package dimensions if space constraints preclude the use of the TSSOP variant.

Part Context

This component belongs to the MPC962305 family of zero-delay buffers designed for clock distribution. It serves as a compact alternative to the 16-pin MPC962309, which offers nine outputs. The device is electrically compatible with Cypress CY2305 and CY23S05 devices, allowing for potential direct pin-compatible substitutions in designs originally utilizing those parts.

Replacement Considerations

Public confirmed substitute part numbers include CY2305 and CY23S05.