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74LS688 8-bit Comparator
74LS688
Texas Instrumentsic logic
The SN54LS687/74LS686/74LS687 is an 8-bit magnitude/identity comparator with totem-pole outputs, designed for digital signal processing and comparison tasks.
In stock
Specifications
2- Operating Voltage
- 5 V V
- Package
- DW, JT, NT
Pinout
21| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | P0 | GPIO | Input pin for the least significant bit of P |
| 2 | Q0 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 3 | P1 | GPIO | Input pin for the second least significant bit of P |
| 4 | Q1 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 5 | P2 | GPIO | Input pin for the third least significant bit of P |
| 6 | Q2 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 7 | P3 | GPIO | Input pin for the fourth least significant bit of P |
| 8 | Q3 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 9 | P4 | GPIO | Input pin for the fifth least significant bit of P |
| 10 | Q4 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 11 | P5 | GPIO | Input pin for the sixth least significant bit of P |
| 12 | Q5 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 13 | P6 | GPIO | Input pin for the seventh least significant bit of P |
| 14 | Q6 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 15 | P7 | GPIO | Input pin for the most significant bit of P |
| 16 | Q7 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 17 | G1 | POWER | Power supply input for the device |
| 20 | P8 | GPIO | Input pin for the least significant bit of P (not shown in diagram) |
| 21 | Q8 | GPIO | Output pin indicating equality or inequality between P and Q at this bit position |
| 22 | P=Q | GPIO | Output pin indicating if P equals Q overall |
| 23 | G2 | POWER | Power supply input for the device (not shown in diagram) |
Interactive pinout
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74LS688
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