LM339SNG - Quad Single-Supply Comparator, 14-Pin PDIP
部品番号: LM339SNG ✗ 生産終了LM339SNG 概要
A comparator is an analog integrated circuit that evaluates two input voltages and produces a logic-level output indicating which input is higher. In the broader electronics hierarchy, LM339SNG belongs to the comparator family within analog and mixed-signal semiconductors. Its single-supply operation is useful when the system has one main supply rail, while its open-collector-style output class is commonly used to drive pull-ups, relay drivers, alarm inputs, and digital control logic.
The LM339SNG provides four comparator channels in one package. The 14-pin PDIP arrangement gives adequate spacing for through-hole assembly, inspection, and prototype rework, although it occupies more board area than surface-mount equivalents. The device is particularly useful when a design requires multiple analog threshold decisions and the board maker prefers a readily available through-hole package. A single IC can reduce the number of separate packages and simplify routing between sensing and control sections.
Typical applications include sensing relay and solenoid drivers, overvoltage and undervoltage detection, window comparators, battery monitoring, level detection, industrial control interfaces, and general-purpose logic threshold circuits. Because comparator outputs are intended to indicate the relative state of two analog inputs, designers should pay attention to input common-mode range, output pull-up requirements, propagation delay, input offset, and supply voltage limits when establishing system behavior. These operating details should be confirmed against the manufacturer datasheet before final qualification.
For implementation, place the device close to the signals being compared and keep sensitive analog traces away from fast-switching nodes. Use suitable bypass capacitance near the supply pins, provide the required pull-up network for the outputs, and verify that every signal remains within the device's supported common-mode and supply limits. The 14-pin PDIP package is particularly appropriate for through-hole industrial, educational, and control-board assemblies where mechanical robustness is more important than minimum board area.
This product page combines the verified LM339SNG identity and package information with practical guidance on comparator behavior, PCB implementation, application fit, and drop-in alternatives. It is intended to help engineers confirm whether the single-supply quad comparator is appropriate for a new design before committing to a board layout or production build.
ドロップイン代替品: LM339SNG — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LM339SNG （同一形状・フットプリント） — 相違点: Comparator Type, Datasheet Availability.
LM339N
✅ ドロップイン価格はお問い合わせください
データシートを見る →LM339SNG 最大定格＆電気的特性
| Comparator Type | Quad voltage comparator |
| Number of Channels | 4 |
| Supply Architecture | Single supply |
| Operating Voltage Range | 18 V to 36 V |
| パッケージ | 14-pin PDIP |
| 実装タイプ | Through-hole |
| Manufacturer | onsemi |
| Device Category | Comparator IC |
| RoHS ステータス | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
| Datasheet Availability | 6-page datasheet listing |
| Datasheet File Size | 80 Kbytes |
LM339SNG 14-pin pdip ピン配置ガイド
LM339SNG (14-pin pdip パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: LM339SNG.
詳細は データシート をご参照ください。
主な用途
LM339SNG の用途: 6 件s: Industrial Overvoltage and Undervoltage Detection, Relay and Solenoid Threshold Control, Sensor Signal Conditioning, Battery Monitoring and Power-Sequence Control, Logic-Level and Signal-Threshold Conditioning, Window and Level Monitoring.
Industrial Overvoltage and Undervoltage Detection
The LM339SNG is suitable for industrial control boards that must detect abnormal rail conditions and generate logic alarms. Its four comparator channels allow two channels to establish upper and lower thresholds, while the remaining channels can handle additional supply or signal limits. The 18 V to 36 V operating range fits higher-voltage control environments, and the 14-pin PDIP package simplifies through-hole maintenance and prototype rework. Use precision references at the inputs, confirm that monitored voltages remain within the supported common-mode range, and provide the required output pull-up network.
おすすめ
Relay and Solenoid Threshold Control
A comparison channel can evaluate a feedback or sensor voltage against a reference and trigger a relay or solenoid driver when a threshold is crossed. The LM339SNG provides four channels in one 14-pin PDIP package, which is useful for multi-actuator control boards. Because a comparator is not necessarily a direct high-current relay driver, the design may require a transistor stage and flyback protection. Confirm output sink-current capability, output-state behavior, and the supply limits in the datasheet before finalizing the actuator interface.
おすすめ
Sensor Signal Conditioning
The LM339SNG can convert slowly changing sensor signals into logic events when the signal crosses a defined reference. This is useful for temperature, level, pressure, and position sensing systems where a microcontroller needs a digital threshold indication rather than continuous analog measurement. Four channels provide flexibility for multiple sensors or hysteresis networks. Use carefully selected resistor dividers, account for input offset and common-mode limits, and add hysteresis where chatter around the switching threshold would be unacceptable.
おすすめ
Battery Monitoring and Power-Sequence Control
The LM339SNG can monitor battery or DC-bus voltages against reference thresholds and provide separate fault signals to a controller. Its four-channel arrangement allows supervision of charge, discharge, overvoltage, and undervoltage conditions in one package. The higher 18 V to 36 V operating range is useful when the monitored system uses a substantially higher bus voltage than low-voltage logic. Verify absolute maximum ratings and input common-mode limits for the specific battery chemistry and transient environment, and use appropriate protection on exposed sensing lines.
おすすめ
Logic-Level and Signal-Threshold Conditioning
The LM339SNG is useful for converting analog thresholds into logic-compatible decisions in legacy control and instrumentation systems. Its single-supply architecture simplifies designs that already operate from one rail, while the four channels allow several independent decisions to be implemented without separate comparator packages. Add the required pull-up resistors for the output stage and validate output polarity in the system schematic. Through-hole assembly makes the device convenient for industrial controller and laboratory instrument builds.
おすすめ
Window and Level Monitoring
Two LM339SNG channels can create an upper and lower threshold detector, producing a valid-window signal when the monitored voltage falls between the two limits. The other two channels can monitor additional rails or provide independent fault outputs. This arrangement suits power-supply sequencing, battery range checks, and process-level monitoring. The reference network should be designed around the required accuracy, and hysteresis should be added when input noise or slow sensor slopes would otherwise cause repeated output transitions. Verify the complete input and output operating conditions before releasing the design.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LM339SNG — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LM339N |
|---|---|---|
| Comparator Type | Quad voltage comparator | Quad voltage comparator |
| Number of Channels | 4 | 4 |
| Package | 14-pin PDIP | 14-pin DIP |
| Mounting Type | Through-hole | Through-hole |
| Brand | onsemi | onsemi |
主な差別化要因
- Four independent comparison channels in one through-hole package （vs LM339N)
- Single-supply implementation （vs LM339N)
- Through-hole assembly for maintainable control boards （vs LM339N)
設計ノート
The LM339SNG is intended for single-supply operation in the identified 18 V to 36 V range. Place the supply bypass capacitor close to the device and return the capacitor ground directly to the device ground pin. Before designing the power path, verify the absolute maximum supply voltage, input common-mode limits, output pull-up arrangement, and the transient behavior of the monitored rail in the manufacturer datasheet.
Use the 14-pin PDIP footprint with adequate spacing for through-hole insertion and soldering. Keep comparator input traces short, route them away from switching nodes and relay-coil wiring, and connect the analog ground reference consistently with the circuit's grounding strategy. If the comparator drives a relay or solenoid, use a separate driver stage and include appropriate flyback protection.
Do not assume that every similarly named LM339 variant is an automatic drop-in replacement. Confirm the 14-pin pin assignment, supply limits, input common-mode range, output type, propagation delay, temperature grade, and required pull-up resistors for every substitute. For new designs, also check input offset, output saturation, and whether the output can reliably drive the downstream logic or transistor stage.
コンプライアンス情報
The verified product information does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 status is not applicable to this general-purpose comparator unless a separate automotive-qualified variant is specified.