MC100EP142MNG

Shift Registers Overview

The MC100EP142MNG is a 9-bit shift register from the onsemi 100EP series, designed for byte-parity applications. It operates in PECL mode with VCC ranging from 3.0 V to 5.5 V (VEE = 0 V) and NECL mode with VCC at 0 V and VEE from -3.0 V to -5.5 V. The device accepts serial or parallel data inputs and provides serial/parallel outputs, shifting directionally from Bit 0 to Bit 8. It features dual clock inputs (CLK0, CLK1), an asynchronous master reset, and supports shift frequencies exceeding 2.8 GHz. Packaged in a 32-lead QFN (5x5 mm) with an exposed pad.

Shift Registers Feature Summary

• Supports byte-parity applications with 9-bit capacity
• Features asynchronous master reset overriding clock inputs
• Includes safety clamps on inputs and open input default state
• Operates in both PECL and NECL voltage modes

Shift Registers Applications

• Byte-parity generation and checking circuits
• High-speed serial-to-parallel data conversion
• Parallel-to-serial data serialization
• ECL-based digital signal processing systems

Shift Registers Procurement Notes

Verify component authenticity through authorized distributors as this part number may be subject to obsolescence. Confirm package suffix 'MN' corresponds to the QFN-32 form factor. Check RoHS compliance status and moisture sensitivity level requirements during storage and handling. Ensure power supply decoupling meets ECL design guidelines for stable operation.

Shift Registers Selection Notes

Select this component when byte-aligned parity operations are required within ECL logic families. Consider the QFN-32 package constraints regarding thermal dissipation and PCB layout. Verify compatibility with existing PECL or NECL power rails. Evaluate the need for dual-clock inputs versus single-clock alternatives based on system timing architecture.

Shift Registers Part Context

Part of the MC100EP family utilizing temperature-compensated ECL technology. Designed for high-frequency digital applications requiring reliable data shifting and parity functions. Manufactured by onsemi using lead-free processes compliant with environmental standards.

Shift Registers Replacement Considerations

MC100EP142FAG serves as a direct functional substitute offering identical electrical characteristics but housed in an LQFP-32 package instead of QFN-32. Verify pinout compatibility and thermal management requirements when transitioning between package types.

Shift Registers FAQ

How does the SEL input control operation mode?

The SEL input switches between SHIFT and LOAD modes. When SEL is HIGH, the device shifts data on the positive clock edge. When SEL is LOW, parallel data inputs D0-D8 are loaded into the registers.

What is the function of the Master Reset (MR) pin?

A HIGH signal on the MR pin asynchronously resets all nine registers to zero, immediately overriding the CLK0 and CLK1 inputs regardless of their current state.

Can unused Q outputs be left unconnected?

Yes, to minimize power consumption, any Q output not utilized in the application should be left unterminated rather than connected to a load.