← All parts
74HC688 8-bit Comparator
SN74HC688
Texas Instrumentsic logic
The 74HC688 is an 8-bit comparator that performs binary or BCD word comparisons and outputs the result based on the inputs P and Q.
In stock
Specifications
4- Operating Voltage
- 2.5-6V
- Supply Current
- 80μA (typical)
- Temperature Range
- -40 to 85°C
- Package
- 20-Pin CDIP, SOIC, PDIP, TSSOP
Pinout
20| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | P0 | GPIO | Input for comparison |
| 2 | P1 | GPIO | Input for comparison |
| 3 | P2 | GPIO | Input for comparison |
| 4 | P3 | GPIO | Input for comparison |
| 5 | P4 | GPIO | Input for comparison |
| 6 | P5 | GPIO | Input for comparison |
| 7 | P6 | GPIO | Input for comparison |
| 8 | P7 | GPIO | Input for comparison |
| 9 | Q0 | GPIO | Input for comparison |
| 10 | Q1 | GPIO | Input for comparison |
| 11 | Q2 | GPIO | Input for comparison |
| 12 | Q3 | GPIO | Input for comparison |
| 13 | Q4 | GPIO | Input for comparison |
| 14 | Q5 | GPIO | Input for comparison |
| 15 | Q6 | GPIO | Input for comparison |
| 16 | Q7 | GPIO | Input for comparison |
| 17 | OE | GPIO | Output enable input, forces the output to high level when active low |
| 18 | VCC | POWER | Supply voltage |
| 19 | GND | GND | Ground |
| 20 | VSS | POWER | Supply voltage (alternative to VCC) |
Interactive pinout
Highlight:
SN74HC688
Click a pin to copy its name · tap a tag above to spotlight a bus.