SN54LS05 - Military 6-ch Open-Collector Inverter | TI
料号： SN54LS05 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.47 | $1,235.00 |
| 1,000 | $2.19 | $2,190.00 |
SN54LS05 概述
An inverter is a logic gate that outputs the logical complement of its input. The SN54LS05 specifically features open-collector outputs, meaning the output transistor's collector is left unconnected internally, requiring an external pull-up resistor to define the high-level output voltage. This allows the device to interface with different voltage domains and to implement wired-OR logic by connecting multiple outputs together. Open-collector outputs also enable driving loads such as relays, LEDs, and lamps directly, with appropriate current limiting.
Key features include six independent inverters, a wide operating temperature range of -55°C to 125°C, and compatibility with TTL logic levels. The open-collector outputs can sink up to 8 mA, and the device supports a supply voltage range of 4.5 V to 5.5 V. The military-grade qualification ensures reliability in defense and aerospace applications.
Technically, the SN54LS05 uses bipolar junction transistor (BJT) technology, providing fast switching speeds and robust output drive. The open-collector design allows for level shifting and bus communication, making it versatile for various logic interfacing tasks. The device is available in a 14-pin CDIP package, which offers excellent thermal and mechanical stability.
Typical applications include military electronics, industrial control systems, and any design requiring high-voltage or high-current logic interfacing. The SN54LS05 is often used to drive relays, lamps, and other loads, as well as to implement wired-OR logic in bus systems.
When designing with this device, ensure that pull-up resistors are properly sized to limit output current and to achieve the desired switching speed. The open-collector outputs require external pull-ups to VCC or another voltage rail, and the resistor value should be chosen based on the load capacitance and required rise time.
直接替换替代料： SN54LS05 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
SN54S05
✅ 直接替换📋 参考替代料（不在目录中）
SN74LS05
✅ 直接替换📋 参考替代料（不在目录中）
SN74S05
✅ 直接替换📋 参考替代料（不在目录中）
MC54LS05
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC74LS05
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SN54LS05 最大额定值与电气特性
| Number of Channels | 6 |
| Supply Voltage Range | 4.5 V to 5.5 V |
| 输出类型 | Open Collector |
| Logic Family | LS |
| 工作温度范围 | -55°C to 125°C |
| Package Type | 14-CDIP |
| 安装类型 | Through Hole |
| Output Current (Sink) | 8 mA |
| Input Voltage (High) | 2 V (min) |
| Input Voltage (Low) | 0.8 V (max) |
| RoHS 状态 | Compliant |
| Military Grade | Yes |
| 引脚数 | 14 |
| Technology | Bipolar |
SN54LS05 引脚配置
| 引脚 1 | 1A — Input of inverter 1 |
| 引脚 2 | 1Y — Output of inverter 1 (open-collector) |
| 引脚 3 | 2A — Input of inverter 2 |
| 引脚 4 | 2Y — Output of inverter 2 (open-collector) |
| 引脚 5 | 3A — Input of inverter 3 |
| 引脚 6 | 3Y — Output of inverter 3 (open-collector) |
| 引脚 7 | GND — Ground |
| 引脚 8 | 4Y — Output of inverter 4 (open-collector) |
| 引脚 9 | 4A — Input of inverter 4 |
| 引脚 10 | 5Y — Output of inverter 5 (open-collector) |
| 引脚 11 | 5A — Input of inverter 5 |
| 引脚 12 | 6Y — Output of inverter 6 (open-collector) |
| 引脚 13 | 6A — Input of inverter 6 |
| 引脚 14 | VCC — Positive supply voltage (4.5V to 5.5V) |
典型应用
SN54LS05 适用于 6 应用s: Military Electronics, Industrial Control Systems, Wired-OR Logic, Level Shifting, Relay and Lamp Driving, Avionics and Aerospace.
Military Electronics
The SN54LS05 is designed for military-grade applications requiring reliable operation over -55°C to 125°C. Its open-collector outputs allow interfacing with high-voltage loads and implementing wired-OR logic in avionics and defense systems. The device's bipolar technology ensures robust performance in harsh environments, and its 8 mA sink capability can drive relays and indicators directly.
推荐
Industrial Control Systems
In industrial control, the SN54LS05 is used for logic-level conversion and driving loads such as relays and lamps. Its open-collector outputs can be pulled up to different voltages, enabling level shifting between 5-V logic and 24-V industrial signals. The wide temperature range and military-grade reliability make it suitable for factory automation and process control.
推荐
Wired-OR Logic
The SN54LS05's open-collector outputs allow multiple outputs to be connected together to implement wired-OR logic. This is useful in bus systems where multiple devices need to share a common line. The device can sink current from the bus, and an external pull-up resistor sets the high level. This configuration is common in interrupt lines and status signals.
推荐
Level Shifting
The SN54LS05 can shift logic levels between different voltage domains. By connecting the pull-up resistor to a higher voltage rail, the open-collector output can produce a high-level voltage that is higher than the device's supply. This enables interfacing 5-V logic with 12-V or 24-V systems, making it useful in mixed-voltage designs.
推荐
Relay and Lamp Driving
The open-collector outputs of the SN54LS05 can directly drive relays, lamps, and LEDs when the current is within the 8 mA sink capability. For higher currents, an external transistor or a driver IC like the ULN2803 can be used. The device's wide temperature range makes it suitable for automotive and industrial lighting applications.
推荐
Avionics and Aerospace
The SN54LS05 is qualified for military and aerospace applications, where reliability and wide temperature operation are critical. It is used in flight control systems, navigation equipment, and communication interfaces. The 14-CDIP package provides robust mechanical integrity, and the bipolar technology ensures consistent performance under extreme conditions.
推荐
推荐产品汇总
工程参考数据： SN54LS05 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | SN54S05 | SN74LS05 | SN74S05 | MC54LS05 | MC74LS05 |
|---|---|---|---|---|---|---|
| Package | 14-CDIP | 14-CDIP | 14-SOIC | 14-SOIC | 14-CDIP | 14-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Motorola | Motorola |
| Number of Channels | 6 | 6 | 6 | 6 | 6 | 6 |
| Supply Voltage Range | 4.5V to 5.5V | 4.5V to 5.5V | 4.75V to 5.25V | 4.75V to 5.25V | 4.5V to 5.5V | 4.75V to 5.25V |
| Output Type | Open Collector | Open Collector | Open Collector | Open Collector | Open Collector | Open Collector |
| Operating Temperature Range | -55°C to 125°C | -55°C to 125°C | 0°C to 70°C | 0°C to 70°C | -55°C to 125°C | 0°C to 70°C |
| Output Current (Sink) | 8 mA | 20 mA | 8 mA | 20 mA | 8 mA | 8 mA |
关键差异点
- Military-grade temperature range （对比 SN74LS05)
- Higher output sink current （对比 SN54S05)
- Lower power consumption （对比 SN54S05)
设计说明
Open-collector outputs require external pull-up resistors. Without them, the output cannot go high, and the logic level will be undefined. Choose pull-up resistor values based on the load capacitance and required rise time; typical values range from 1kΩ to 10kΩ.
For high-speed operation, keep pull-up resistors close to the device and minimize trace length to reduce parasitic capacitance. Use a ground plane to provide a low-impedance return path and reduce noise. Decouple the VCC pin with a 0.1µF ceramic capacitor placed as close as possible to the pin.
The SN54LS05 is specified for -55°C to 125°C. In high-temperature environments, ensure adequate airflow or heatsinking if driving multiple outputs at maximum current. The 14-CDIP package has a thermal resistance of approximately 100°C/W, so power dissipation should be limited to avoid exceeding the maximum junction temperature.
合规信息
RoHS compliant per TI product page. Military-grade, not AEC-Q100 qualified.
