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Description
74HC688Comparator ID 8 BIT 20PD(18) Feature Basic Information: Type: Parallel Priority Encoder Family: 74HC (High Speed CMOS) Function: Converts 8 input lines into a 3 bit binary output, providing priority to the highest order active input. Pin Configuration: Inputs: A0 to A7 (8 inputs) Outputs: Y0, Y1, Y2 (3 bit binary output) Control Inputs: G (Enable): Activates the device. A (Active Low): When low, it allows the encoder to function. Operation: The
Comparator ID 8-BIT 20PD(18)
Feature
Basic Information:
- Type: Parallel Priority Encoder
- Family: 74HC (High-Speed CMOS)
- Function: Converts 8 input lines into a 3-bit binary output, providing priority to the highest-order active input.
Pin Configuration:
- Inputs: A0 to A7 (8 inputs)
- Outputs: Y0, Y1, Y2 (3-bit binary output)
Control Inputs:
- G (Enable): Activates the device.
- A (Active Low): When low, it allows the encoder to function.
Operation:
- The 74HC688 encodes the highest priority active input (from A0 to A7) into a binary output.
- If no inputs are active, the outputs are set to a predefined state (usually all low).
Electrical Characteristics:
- Supply Voltage (Vcc): Typically operates at 2V to 6V.
- High Level Input Voltage (VIH): Minimum value required for a high logic level.
- Low Level Input Voltage (VIL): Maximum value for a low logic level.
- Output High Voltage (VOH): Minimum value for a high output.
- Output Low Voltage (VOL): Maximum value for a low output.
Additional Information
| Device | Comparator |
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4.4 ★★★★★
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Product Reviews
★★★★★ 5
Super cute!
Color: A2: Silver Color 4 Pcs + Birthstone
The delivery time was great for the range going from June 3 - June 13 (I received it on June 4). The keychains are super cute. I had ordered this for my friends’ birthdays, they all have one in May. I can’t wait to give it to them :).
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Reviewed in the United States on June 4, 2024
★★★★★ 5
Puzzle key chain
Color: A1: Silver Color 5 Pcs
It really came out nice. Nice size. Looking forward to handout at the sibling reunion. I'm adding the tree of life charm to each one.
Nice memento for my siblings.
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Reviewed in the United States on May 9, 2024
★★★★★ 5
Super cute!!
Color: A2: Silver Color 4 Pcs + Birthstone
This was such an easy purchase no complications while ordering, the quality is good. I’m very pleased with this product.
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Reviewed in the United States on February 1, 2024
★★★★★ 5
It’s really nice
Color: A2: Silver Color 4 Pcs + Birthstone
I thought this was a really cute little extra for my sisters Christmas gift. Honestly it’s really nice. They have some weight to them and it’s not cheaply made. I have been disappointed by many orders this season but not this one. Recommended!
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Reviewed in the United States on December 13, 2022
★★★★★ 5
Exactly as expected
Color: A2: Silver Color 5 Pcs + Birthstone
Gave this to family members we each took one other than our own to remember every time we get in the car that we are part of a family that cares about each others safety.
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Reviewed in the United States on January 29, 2023