HCTL-2017-A00 — Broadcom (Avago Technologies)

Overview

The Broadcom (formerly Avago) HCTL-2017-A00 is a CMOS quadrature decoder that offloads incremental-encoder decoding from the host processor, accumulating position in a 16-bit counter. Schmitt-triggered inputs and a clocked digital filter reject glitches from motor-drive noise, but because the filter samples on the system clock, clock rate caps the encoder edge rate the device can follow. In this 16-pin DIP version the cascade outputs are absent, so firmware must poll often enough to catch counter wrap-around.

Key Features

• 16-bit binary up/down position counter
• 8-bit tristate bus with latched, TTL/CMOS-compatible outputs
• Clock operation up to 14 MHz
• 4.5–5.5 V supply
• −40 °C to +85 °C operating range
• 16-pin plastic DIP, through-hole, RoHS compliant

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Closed-loop servo position feedback in CNC axes and robotic joints
• Manual pulse generator handwheel input on machine-tool panels
• Shaft-angle tracking in motorized antenna or telescope mounts
• Repair and retrofit of legacy 8-bit motion-control boards