Overview: SN74LS169 Up/Down Synchronous Binary Counter
"(《世界人权宣言》) SN74LS169 is a 4-bit synchronous up/down binary counter from 德州仪器, designed to operate efficiently within TTL logic families. It incorporates synchronous parallel load capability, which allows loading any desired value into the counter. This makes it highly suitable for applications requiring programmable counting sequences.
Thanks to its synchronous architecture, all changes are executed in response to the clock input, ensuring timing consistency and minimizing propagation delays. This IC is packaged in a robust DIP-16 format, supporting reliable through-hole integration.
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Electrical Specifications and Key Parameters
| 参数 | 价值 | 单位 |
|---|---|---|
| 功能 | 4-bit Synchronous Up/Down Binary Counter | – |
| 包装 | DIP-16 | – |
| Input Compatibility | TTL | – |
| Count Direction | Selectable (Up/Down) | – |
| Load Type | Parallel Synchronous Load | – |
| Reset Type | Synchronous Clear | – |
| 安装 | Through Hole | – |
| 温度范围 | 0 至 70 | ??C |
Advantages of SN74LS169 in Timing Applications
This device excels in time-sensitive digital circuits due to its synchronous counting mechanism. Unlike ripple counters, the SN74LS169 ensures output bits change simultaneously, minimizing timing mismatches.
Its up/down select input enables flexible counting directions, and its load capability supports programmable operations in embedded controllers and automation systems. Engineers rely on this component in scalable digital counters and logic sequencing where precise timing and logic integrity are critical.
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Backed by Texas Instruments?? legacy and distributed by 集成电路制造商, the SN74LS169 brings both performance and reliability into your design.
Detailed Technical Parameters
| 特点 | 说明 |
|---|---|
| Logic Type | TTL |
| Counting Mode | Up/Down Synchronous |
| Control Inputs | Load, Clear, Count Enable |
| 输出类型 | Binary, TTL-Compatible |
| 针数 | 16 |
| 电源 | 5V Nominal |
Typical Applications of SN74LS169
- Programmable event counters in test and measurement systems
- Digital timers in industrial automation equipment
- Sequential logic controllers for consumer electronics
- Clock division circuits in embedded logic systems
- Digital input stepper motor controllers
常见问题（FAQ）
What is the primary function of the SN74LS169?
It performs 4-bit binary counting with synchronous up/down control and presettable values, suitable for complex timing and control applications.
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Can the SN74LS169 be used in up and down counting operations?
Yes, the direction input allows the user to switch between up-counting and down-counting modes dynamically during operation.
What benefits does synchronous design offer?
Synchronous counters ensure all flip-flops are triggered simultaneously by the same clock signal, reducing propagation delays and improving accuracy.
Is the SN74LS169 suitable for consumer electronics?
Absolutely. Its compact DIP-16 package and low-power TTL operation make it ideal for control functions in consumer and household electronics.
What makes it better than asynchronous counters?
Synchronous counters like the SN74LS169 provide more precise timing and cleaner signal transitions, which are essential in complex digital systems.
