# Synchronous binary counter

Canonical URL: https://eloragrid.ai/symbols/synchronous-binary-counter
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: CTR-SYNC
Drawing use: Schematic
Reference families: Manufacturer

Updates its binary count from a common clock with the documented count-enable, load and clear controls.

## What it represents

Updates its binary count from a common clock with the documented count-enable, load and clear controls.
On a schematic, identify the common clock, enables, load data and reset timing and trace the count outputs and carry/cascade signal. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
Synchronous operation does not remove setup/hold and output-delay requirements; reset can be synchronous or asynchronous depending on the part.
The preview is an independently drawn educational functional reference. Add the selected component’s actual power pins, terminal numbers, timing or analogue reference details when producing a construction drawing.

## How to read it

- Identify the common clock, enables, load data and reset timing.
- Trace the count outputs and carry/cascade signal.

## Information to show or reference

- Label the common clock, enables, load data and reset timing.
- Cross-reference the count outputs and carry/cascade signal.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

Synchronous operation does not remove setup/hold and output-delay requirements; reset can be synchronous or asynchronous depending on the part.

## Facts

- Common schematic mnemonic: CTR-SYNC — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The common clock, enables, load data and reset timing
- Artwork scope: Original educational functional/circuit reference; not a selected product pinout.

## Public references

- [SN74HC163 — synchronous binary counters](https://www.ti.com/lit/ds/symlink/sn74hc163.pdf) — Texas Instruments. Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.