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Specifications
SKU: 11226671
| Parameter | Symbol | Min | Typical | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 2.0 | - | 6.0 | V | Recommended operating range is 2.0V to 6.0V |
| Input Low Voltage | VIL | - | 0.3 | 1.5 | V | Input voltage for logic low |
| Input High Voltage | VIH | 3.5 | - | VCC | V | Input voltage for logic high |
| Output Low Voltage | VOL | - | 0.1 | 0.4 | V | Output voltage for logic low (IOL = 4 mA) |
| Output High Voltage | VOH | 2.4 | - | VCC - 0.1 | V | Output voltage for logic high (IOH = -0.4 mA) |
| Input Leakage Current | IIL | -1.0 | 0 | 1.0 | μA | Maximum leakage current at input pins |
| Output Sink Current | IOL | - | 25 | 70 | mA | Maximum sink current per output pin |
| Output Source Current | IOH | - | 25 | 70 | mA | Maximum source current per output pin |
| Propagation Delay Time | tpd | - | 12 | 25 | ns | Propagation delay time from input to output (VCC = 5V) |
| Power Consumption | PT | - | 10 | 20 | mW | Total power consumption at VCC = 5V, all inputs high |
Instructions for Use
Power Supply:
- Connect VCC to the positive supply voltage (2.0V to 6.0V).
- Connect GND to the ground.
Input Connections:
- Connect the input pins (A0-A7, B0-B7) to your logic signals.
- Ensure that the input voltages are within the specified range (VIL and VIH).
Output Connections:
- The outputs (Y0-Y7) will indicate the result of the comparison.
- Ensure that the load connected to the output pins does not exceed the maximum sink or source current ratings.
Propagation Delay:
- The propagation delay time (tpd) is the time it takes for the output to change state after the input changes. This is typically around 12 ns at VCC = 5V.
Power Consumption:
- The device has a typical power consumption of 10 mW when all inputs are high and VCC is 5V.
Handling:
- Handle the device with care to avoid static damage.
- Store and use the device in a controlled environment to prevent damage from humidity and temperature extremes.
Application:
- The 74HC688AP is an 8-bit magnitude comparator. It compares two 8-bit binary numbers (A0-A7 and B0-B7) and provides outputs indicating whether A is less than, equal to, or greater than B.
By following these guidelines, you can ensure reliable operation of the 74HC688AP in your circuit.
(For reference only)Inquiry - 74HC688AP
