This is a used MM506 Dynamic Shift Register IC, a dual 100-bit component. The item is sold in its current, pre-owned condition as described. Free shipping is included with this purchase. This type of integrated circuit is commonly used in digital electronics for temporary data storage and transfer, making it suitable for hobbyists, technicians, or engineers involved in prototyping, repairs, or educational projects. As a used part, it is a cost-effective option for non-critical applications or testing. Please check the listing for full details on the specific physical state and any included accessories. MM506 Dynamic Shift Register IC, Dual 100 Bit, SOLDER PULL. Condition: Used. Listed at 12.95 USD. Flat shipping for any qty. purchased! NOTE: Multiple item listing - your part may have different markings or date codes, but will be in similiar or better condition. This is a solder pull.