NB2304AC2D

Overview

The NB2304AC2D is a commercial-grade, 3.3 V zero delay clock buffer manufactured by onsemi. It features an integrated PLL that locks to an input clock presented on the REF pin, with feedback driven to the FBK pin from one of four outputs. The device operates within a frequency range of 15 MHz to 133 MHz and supports a supply voltage of 3.0 V to 3.6 V. It guarantees an input-to-output propagation delay of less than 250 ps and an output-to-output skew of less than 200 ps. The part is housed in an 8-pin SOIC package.

Feature Summary

• Zero input-output propagation delay adjustable via capacitive load on the FBK input
• Integrated PLL for high-speed clock distribution with < 250 ps input-to-output delay
• Low-skew performance with < 200 ps output-to-output skew and < 500 ps device-to-device skew
• Configurable output frequencies including Reference, 1/2 X, and 2X based on feedback selection

Applications

• PC and workstation clock distribution
• Datacom equipment timing
• Telecommunications systems
• High-performance computing applications

Procurement Notes

Verify the specific suffix 'C' indicates the Commercial temperature range (0°C to 70°C) and '2' denotes the specific configuration allowing REF, 1/2 X, and 2X frequencies. Confirm the package type is SOIC-8. Check current availability status as product lifecycles may change. Ensure the ordering code matches the required industrial or commercial grade for the target environment.

Selection Notes

Select this component when a zero-delay buffer with configurable frequency multiplication/division is required. The NB2304AC2D allows users to obtain REF, 1/2 X, and 2X frequencies depending on which output drives the feedback pin. Ensure all outputs are equally loaded to maintain zero input-output delay and minimal skew. Verify that the 3.3 V supply and 133 MHz maximum frequency meet system requirements.

Part Context

The NB2304AC2D belongs to the NB2304A family of 3.3 V zero delay buffers. It shares core specifications with variants like NB2304AC1D but differs in configuration capabilities. The 'C' suffix specifies the commercial operating temperature range, while the '2' suffix identifies the specific internal divider configuration for generating multiple frequency ratios from the reference input.

Replacement Considerations

Direct replacements include other NB2304A variants such as NB2304AC1D or NB2304AI2D, provided the temperature range and specific frequency configuration match the design needs. Cross-vendor alternatives like Cypress CY2305C offer similar zero-delay buffering functions but require verification of pin compatibility and electrical parameters.