LM211PW - Single Strobed Differential Comparator | Texas Instruments
부품 번호: LM211PW ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
LM211PW 개요
A differential comparator is an analog integrated circuit that compares two input voltages and produces a logic-oriented output indicating which input is higher. The LM211 belongs to the comparator and analog IC hierarchy, where it bridges an analog sensing function and downstream TTL, MOS, lamp, or relay control. Its strobe input allows the output state to be controlled for system timing, testing, or synchronization.
The verified product information identifies the LM211PW as a single high-speed voltage comparator with strobe capability, open-collector and open-emitter outputs, and compatibility with most TTL and MOS circuits. Texas Instruments describes the LM111, LM211, and LM311 family as capable of driving lamps or relays and operating across a broad power-supply range. The PW package is identified as an 8-pin TSSOP.
The open-collector and open-emitter outputs make output-state control and external pull-up or pull-down implementation important. The comparator is suitable for threshold detection, level translation, relay or lamp interfaces, industrial control logic, and mixed-signal systems where a decision is based on the relationship between two voltages. Its logic compatibility allows the output to interface with digital systems when appropriate external components are used.
Typical applications include sensing a control voltage against a reference, detecting an overvoltage or undervoltage condition, generating a system enable signal, and switching a relay or lamp from a low-voltage control circuit. The LM211PW should be selected when a differential comparison function, wide supply-voltage support, strobe control, and an 8-pin TSSOP are required. Exact electrical ratings, pin behavior, output ratings, and recommended operating limits should be confirmed from the manufacturer datasheet before design release.
The LM211PW datasheet is the authoritative source for pin assignments, voltage ranges, input common-mode behavior, output sink and source capabilities, timing characteristics, and application guidance. Verify the absolute maximum ratings, supply sequencing, input protection, output pull-up requirements, and external drive-current limits for the intended load. Do not assume that an open-collector output can source current without an appropriate pull-up or active external network.
This product data combines the verified Texas Instruments product identity, distributor catalog information, package details, comparator function, and application-relevant guidance. It is intended to support component search, engineering selection, and design review while avoiding unverified electrical values that are not present in the supplied source material.
드롭인 대체품: LM211PW — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
LM311PWR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM311PS
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM111PWR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
LM211PWR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM311PW
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
LM211PW 최대 정격 & 전기적 특성
| Product Type | Single differential comparator |
| Comparator Function | Differential voltage comparison |
| 출력 구성 | Open-collector and open-emitter |
| Strobe Capability | Yes |
| Supply Voltage Support | Wide range including ±15 V and 5 V |
| Input Type | Differential inputs |
| Logic Compatibility | Compatible with most TTL and MOS circuits |
| Output Load Capability | Capable of driving lamps or relays |
| 패키지 | 8-pin TSSOP (PW) |
| 실장 유형 | Surface mount |
| Manufacturer | Texas Instruments |
| Device Family | LM111, LM211, LM311 family |
LM211PW 8-pin tssop (pw) 핀 구성 가이드
LM211PW(8-pin tssop (pw) 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: LM211PW.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
LM211PW 적합 용도: 7 애플리케이션s: Industrial Threshold Detection, Relay Interface, Lamp and Indicator Control, Mixed-Signal Logic Interface, Power-Supply Supervision, Legacy Test and Measurement Control, Relay Logic and Sequencing.
Industrial Threshold Detection
The LM211PW fits industrial threshold-detection circuits because it compares a sensed voltage against a reference and provides a logic-oriented output for downstream control. Its differential input arrangement helps reject common-mode variation when both signals share a similar reference environment. The open-collector and open-emitter outputs allow the design to interface with TTL, MOS, relay, or lamp circuitry through suitable external components. The verified information supports wide supply operation, including ±15 V and 5 V contexts, but exact common-mode limits and timing values must be taken from the manufacturer datasheet. In a real control board, place the comparator near the protected sensing node, bypass the supply rails, and verify that the output network does not exceed the device's sink or source ratings.
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Relay Interface
The LM211PW can serve as the decision element in a relay-driver stage because Texas Instruments identifies the LM211 family as capable of driving lamps or relays. The comparator output is not assumed to be a complete power stage: the open output configuration requires a suitable pull-up, pull-down, transistor, or driver arrangement, and inductive loads require flyback protection. Use the comparator when a voltage threshold must determine whether a relay should change state. Verify output-current, voltage, response-time, and absolute-maximum specifications from the LM211 datasheet before selecting resistor values or adding a driver stage.
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Lamp and Indicator Control
The LM211PW is suitable for a lamp or indicator threshold switch when the system needs a clean digital decision from two analog voltages. Its output can be arranged to cooperate with external drive circuitry rather than directly assuming a push-pull output. A typical design compares a control signal with a threshold, then uses the resulting state to enable a transistor or logic gate driving the lamp. Because the verified data does not provide numeric output-current or thermal limits, calculate the load against the datasheet ratings and include current limiting, switching protection, and supply bypassing. The broad supply-voltage support makes the device relevant to both legacy ±15 V and 5 V logic-oriented systems.
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Mixed-Signal Logic Interface
The LM211PW fits a mixed-signal interface where an analog threshold must be converted into a signal that can interact with digital logic. Texas Instruments states that the LM211 family's output levels are compatible with most TTL and MOS circuits, while the strobe function gives the system a way to control or synchronize the comparison event. Use suitable pull-up or pull-down components for the open outputs and confirm the receiving device's input thresholds. Keep the comparator supply and input routing separated from noisy switching stages where possible. The supplied material does not include propagation delay or input-overvoltage values, so those timing and protection decisions require the official datasheet.
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Power-Supply Supervision
The LM211PW can implement a simple power-supply supervision function by comparing a divided feedback voltage with a reference or threshold. The resulting output can indicate an overvoltage, undervoltage, or enable condition for a supervisory path. Its differential inputs are useful for comparing two scaled rails, while the broad family supply-voltage support can assist legacy analog and logic systems. The actual accuracy, input offset, common-mode range, response time, and output behavior are not included in the supplied data and must be verified from the Texas Instruments datasheet. Add hysteresis where required to prevent repeated switching near the threshold.
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Legacy Test and Measurement Control
The LM211PW is suitable for legacy test and measurement equipment that uses analog threshold decisions to drive logic, lamps, or relays. A comparator can define whether an input crosses a selected reference and provide a strobed event for sequencing or capture. The verified Texas Instruments description specifically supports wide supply voltages, including ±15 V systems, and logic-compatible outputs. For instrumentation, keep input wiring short, provide local supply decoupling, and account for open-output pull-up requirements. Since the supplied evidence does not include offset, noise, response-time, or temperature data, do not use this page to establish precision metrology limits without reviewing the manufacturer datasheet.
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Relay Logic and Sequencing
The LM211PW can support relay logic and sequencing when a system needs a threshold-controlled decision before switching an external load. The strobe input allows a controller to qualify or time the comparison, while the open-collector and open-emitter outputs can be connected to an appropriately designed driver or pull-up network. This arrangement is useful in equipment with multiple rails or interlocked loads where a comparator must make an allow or inhibit decision. Add isolation, flyback diodes, and appropriate transistor gain as required. The exact pinout, output-current limits, response time, and supply ratings should be confirmed from the official LM211 documentation before final schematic approval.
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추천 제품 요약
엔지니어링 참조 데이터: LM211PW — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LM311PWR | LM311PS | LM111PWR | LM211PWR |
|---|---|---|---|---|---|
| Package | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | Single differential comparator | Single high-speed voltage differential comparator | Single differential comparator | Differential comparator | LM211 differential comparator |
주요 차별점
- Verified LM211PW identity and function (vs LM311PWR)
- Explicit open-output and strobe description (vs LM111PWR)
- Same broad application positioning (vs LM311PS)
설계 노트
The LM211PW family is described as operating from wide supply ranges, including ±15 V and 5 V systems. Verify the exact positive and negative supply limits, input voltage limits, and output ratings in the manufacturer datasheet before connecting external circuitry. Place supply bypassing close to the device and keep the comparator's return path connected to the reference ground used by the input signals.
Do not treat the LM211PW open-collector and open-emitter outputs as a push-pull logic driver. Add the required pull-up or pull-down network and confirm that its resistor value satisfies the receiving logic's input-current limits without exceeding the comparator output ratings. For relay or lamp loads, include suitable transistor drive and flyback or transient protection where required.
Keep the differential input traces short and route them away from switching nodes and high-current return paths. Use a clean local reference for the threshold or reference signal, and add hysteresis or filtering if noise near the decision point could cause repeated output transitions. The strobe connection should be driven only within the logic levels and timing conditions stated in the official datasheet.
규정 준수 정보
The supplied verified search results identify the manufacturer, function, package, and distributor sources but do not provide compliance declarations. These fields must be confirmed from current Texas Instruments product documentation.
