AMI Semiconductors - S1685 – Vintage Dual 480 Dynamic 256 to 500 Bit Shift Register, Gold Leads, New.

AMI Semiconductors - S1685 – Vintage Dual 480 Dynamic 256 to 500 Bit Shift Register, Gold Leads, New. An AMI S1685 IC is a vintage, bipolar shift register, specifically a dual 480-bit recirculating shift register, manufactured by American Microsystems, Inc. (AMI), used in early digital systems to temporarily store and shift data bits, functioning like a digital conveyor belt controlled by a clock signal. When you clock it, the data in each bucket (bit) moves to the next bucket down the line, and it can recirculate. It's a fundamental building block for serial-to-parallel conversion and data buffering in older electronics. It replaced Magnetostrictive Delay Line Memory and was a popular component in the 1970s for building memory boards, offering a way to store data before faster IC memory took over. Key Characteristics: • Type: Shift Register (Dual 480-bit). • Manufacturer: AMI (American Microsystems, Inc.). • Function: Stores and moves digital data (bits) sequentially, like a delay line. Supply Voltage: +5V, -12V. Dissipation: 170mW. Technology: PMOS. Data Rate: 1 MHz Clocks: 2 I/O: TTL/MOS Package: TO-8-12, Gold Leads, Metal Can. Alternate: Fairchild 3337 Applications: This IC is considered a vintage electronic component and is often sought after for repairing or restoring legacy computer hardware and industrial equipment from the early 1970s. Made in USA Genuine Vintage American Micro System – No Counterfeits – No China – No Delays – No Disappointments. New Old Stock