74HC163 4-Bit Synchronous Binary Counter IC

74HC163 synchronous binary counter IC

The 74HC163 is a presettable 4-bit binary counter for digital logic circuits. Its four outputs represent a binary count, making it useful for counting clock pulses, building divide-by-N logic with external circuitry and demonstrating sequential logic in electronics projects.

Counting, parallel loading and reset are synchronous with the positive-going clock edge. Unlike an asynchronous-clear counter, asserting reset does not immediately clear the outputs without the required clock transition.

Core counter functions

• Counter width: 4 bits.
• Clock: positive-edge triggered.
• Preset: synchronous parallel loading.
• Reset: synchronous.
• Control: count-enable inputs.
• Expansion: carry output for suitable cascaded counter designs.

Confirm package and electrical compatibility

Verify the actual manufacturer marking and full part suffix before selecting a PCB footprint or breadboard adapter. The listing’s package details are inconsistent, so DIP or surface-mount stock should be confirmed with EPRO before purchase. Do not choose a footprint from the generic 74HC163 number alone.

The HC family uses CMOS input thresholds. The related HCT family has different input-level requirements; do not assume that a 74HC163 input is interchangeable with a TTL-level input in every circuit.

Use the datasheet for the actual supplied part to check supply voltage, input thresholds, timing limits, pinout and decoupling. Clock speed depends on the device, supply and circuit conditions; no single maximum frequency is promised for unidentified stock.

Pair it with suitable passive components from resistors and capacitors when building your logic circuit. A complete project board or clock source is not established as included.

Frequently asked questions

Is its reset synchronous?

Yes. The 74HC163 resets on the required positive-going clock transition.

Can I connect it to Arduino logic?

Only after checking supply levels, input thresholds and timing for both devices. A direct connection is not universally suitable.

Is the stocked IC DIP16?

The exact package is unresolved. Confirm the supplied suffix and package before ordering.