MC100E241

• SHIFT overrides HOLD/LOAD Control
• 1000ps Max. CLK to Q
• Asynchronous Master Reset
• Pin-Compatible with E141
• Extended 100E VEE Range of 4.2V to 5.46V
• 75k Input Pulldown Resistors

The MC100E241 is an 8-bit shiftable register. Unlike a standard universal shift register such as the E141, the MC100E241 features internal data feedback organized so that the SHIFT control overrides the HOLD/LOAD control. This enables the normal operations of HOLD and LOAD to be toggled with a single control line without the need for external gating. It also enables switching to scan mode with the single SHIFT control line.

The eight inputs D₀ D₇ accept parallel input data, while S-IN accepts serial input data when in shift mode. Data is accepted a set-up time before the positive-going edge of CLK; shifting is also accomplished on the positive clock edge. A HIGH on the Master Reset pin (MR) asynchronously resets all the registers to zero.