Overview
The SN74HC688DW is an 8-bit identity comparator manufactured by Texas Instruments, designed for high-performance digital logic applications. This component is part of the 74HC series and is widely used in systems requiring precise comparison of binary or BCD data. Its market positioning targets applications in industrial automation, consumer electronics, and embedded systems, where reliable and efficient logic operations are essential. The SN74HC688DW stands out for its wide operating voltage range, low power consumption, and high-speed performance, making it a competitive choice for engineers and designers.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Brand | Texas Instruments | - | - |
| Model | SN74HC688DW | - | - |
| Package | SOIC-20 | - | - |
| Comparator Type | Identity | - | - |
| Number of Bits | 8 | bit | - |
| Logic Function | A = B | - | - |
| Output Type | Active Low | - | - |
| Supply Voltage (Max) | 6 | V | - |
| Supply Voltage (Min) | 2 | V | - |
| Operating Temperature (Min) | -40 | °C | - |
| Operating Temperature (Max) | +85 | °C | - |
| Propagation Delay Time | 210, 42, 36 | ns | Varies with conditions |
| Static Current | 8 | µA | - |
| Output Drive Current | 5.2 | mA | - |
Key Features
- Wide operating voltage range from 2 V to 6 V.
- Low power consumption with a maximum static current of 8 µA.
- High-speed performance with propagation delays as low as 36 ns.
- Active low output for efficient logic operations.
- Designed for comparing two 8-bit binary or BCD words.
Applications
The SN74HC688DW is ideal for a variety of applications, including industrial control systems, consumer electronics, and embedded systems. In industrial automation, it is used for data comparison in control units. In consumer electronics, it supports logic operations in devices such as gaming consoles and home appliances. Its reliability and speed also make it suitable for automotive electronics, where precision and efficiency are critical.
Q & A
1. What is the operating voltage range of the SN74HC688DW?
The operating voltage range is from 2 V to 6 V.
2. What is the maximum propagation delay of the SN74HC688DW?
The maximum propagation delay is 210 ns, with typical values of 42 ns and 36 ns under specific conditions.
3. What type of output does the SN74HC688DW have?
It has an active low output.
4. What is the function of the SN74HC688DW?
It is an 8-bit identity comparator used to compare two 8-bit binary or BCD words.
5. What is the operating temperature range of the SN74HC688DW?
The operating temperature range is from -40°C to +85°C.
6. Is the SN74HC688DW RoHS compliant?
Yes, it is RoHS compliant.
7. What is the package type of the SN74HC688DW?
It comes in an SOIC-20 package.
8. What is the static current consumption of the SN74HC688DW?
The static current consumption is 8 µA.
9. Can the SN74HC688DW be used in automotive applications?
Yes, its reliability and performance make it suitable for automotive electronics.
10. What is the output drive current of the SN74HC688DW?
The output drive current is 5.2 mA.
