HCTL-20XX-XX is a programmable counter with high noise immunity and low power consumption, which can interface with a microprocessor for use in digital closed-loop motion control systems and digital data input systems.
The HCTL‑20XX family are CMOS ICs that provide quadrature decoding, counting, and an 8‑bit tristate bus interface for digital motion‑control and data‑input systems. The devices operate from a 4.5‑5.5 V supply, support clock frequencies up to 33 MHz, and function over a temperature range of –40 °C to +100 °C. Features include Schmitt‑trigger inputs, high noise immunity, 32‑bit up/down counters, and optional index‑channel support.
Typical applications are interfacing incremental shaft encoders to microprocessors, connecting digital potentiometers to data buses, and other encoder‑to‑processor tasks. Ordering information and distributor contacts are provided at the end of the sheet.
| Maximum Clock Frequency | 33 MHz |
|---|---|
| Recommended Supply Voltage | 4.5 V to 5.5 V |
| Operating Temperature Range | -40 °C to +100 °C |
| Counter Width | 32‑bit up/down counter |
| Bus Interface | 8‑bit tristate interface |
| Positive‑Going Input Threshold (Vt4) | 3.5 V to 4.0 V |
The devices operate up to 33 MHz clock frequency.
A supply voltage of 4.5 V to 5.5 V is recommended.
They function from –40 °C to +100 °C.
No, the HCTL‑2022 supports only single‑axis operation and lacks decoder output.