MC100E241FNG

Shift Registers Overview

The MC100E241FNG is an 8-bit shiftable register from the onsemi 100 Series, packaged in a 28-lead PLCC (CASE 776). It operates within a PECL mode range of VCC = 4.2 V to 5.7 V with VEE = 0 V, or NECL mode with VCC = 0 V and VEE = −4.2 V to −5.7 V. The device features a maximum clock-to-Q propagation delay of 1000 ps and accepts parallel inputs D0–D7 and serial input S-IN. Data shifts on the positive clock edge, controlled by SEL0 overriding SEL1. An asynchronous Master Reset (MR) forces outputs LOW when HIGH. Internal 50 kΩ pulldown resistors are present at inputs.

Shift Registers Feature Summary

• SHIFT control line overrides HOLD/LOAD functionality for simplified scan mode switching
• Asynchronous Master Reset pin forces all registers to zero state
• Internal input pulldown resistors simplify interface design
• Pin-compatible with E141 universal shift register

Shift Registers Applications

• High-speed data storage and shifting in communication systems
• Scan chain implementation for testability in digital logic designs
• Parallel-to-serial and serial-to-parallel conversion circuits
• Buffering and timing adjustment in ECL-based processing architectures

Shift Registers Procurement Notes

Verify package suffix 'FN' corresponds to PLCC-28 and 'G' indicates Pb-Free status per datasheet ordering information. Confirm voltage requirements match PECL or NECL specifications before integration. Ensure thermal management meets junction-to-ambient resistance limits for the operating environment. Check moisture sensitivity level requirements during assembly process planning.

Shift Registers Selection Notes

Select this component when pin compatibility with E141 is required alongside enhanced shift control logic. Consider the 1000 ps max propagation delay for high-frequency applications up to 900 MHz toggle frequency. Evaluate power supply configurations against PECL or NECL operating ranges. Verify that internal pulldown resistors meet input termination needs without external components.

Shift Registers Part Context

Part of the onsemi 100 Series ECL logic family, designed for temperature compensation and high-speed operation. The series includes various gates, flip-flops, and registers optimized for low-voltage differential signaling environments. This specific register provides specialized control logic distinct from standard universal shift registers through its internal feedback organization.

Shift Registers Replacement Considerations

MC100E141 is documented as pin-compatible but lacks the SHIFT override feature. Verify functional equivalence if replacing with other 100 Series registers. No direct substitutes are listed in the provided documentation.