MC100E142FNR2G

Shift Registers Overview

The MC100E142FNR2G is a 9-bit shift register from the 100 Series, designed for byte-parity applications. It supports serial/parallel in and serial/parallel out shifting in one direction (bit 0 to bit 8). The device operates in PECL mode with VCC = 4.2 V to 5.7 V and VEE = 0 V, or NECL mode with VCC = 0 V and VEE = −4.2 V to −5.7 V. It features dual clocks (CLK1, CLK2), an asynchronous master reset, and internal input 50 kΩ pulldown resistors. The minimum shift frequency is 700 MHz. It is housed in a PLCC-28 package.

Shift Registers Feature Summary

• Supports byte-parity applications with 9-bit capacity
• Features asynchronous master reset and dual clock inputs
• Includes internal input pulldown resistors for noise reduction
• Provides ESD protection exceeding 2 kV Human Body Model

Shift Registers Applications

• Byte-parity generation and checking circuits
• High-speed data shifting and storage systems
• Serial-to-parallel and parallel-to-serial conversion interfaces

Shift Registers Procurement Notes

Verify the specific ordering suffix 'R2G' corresponds to the tape and reel packaging configuration as documented in the manufacturer's ordering information table. Confirm that the Pb-Free status aligns with project requirements, noting that moisture sensitivity level differs between leaded and lead-free variants. Ensure supply chain channels are authorized to guarantee component authenticity and traceability.

Shift Registers Selection Notes

Select this component when a 9-bit shift register with byte-parity capability is required. Choose the 100 Series variant over the 10 Series if temperature compensation is necessary for the operating environment. Verify that the system power supply architecture supports either PECL or NECL voltage ranges before implementation.

Shift Registers Part Context

This part belongs to the MC10E/100E142 family of 5V/EnECL 9-Bit Shift Registers manufactured by onsemi. The 100 Series specifically incorporates temperature compensation compared to the standard 10 Series. The device is available in various packages including PLCC-28, with the FNR2G suffix indicating a specific reel quantity and lead-free composition.

Shift Registers Replacement Considerations

MC100E142FN

Shift Registers FAQ

How does the SEL pin control operation?

The SEL pin switches between LOAD mode (when LOW) and SHIFT mode (when HIGH).

What is the recommended termination for unused outputs?

Unused Q outputs should be left unterminated to minimize noise and power consumption.