LM339PWRG3 - Quad 36V Comparator | Texas Instruments
Référence : LM339PWRG3 ✓ ActifLM339PWRG3 Présentation
A comparator is an analog integrated circuit that compares two input voltages and changes its output state when one input crosses the other. The LM339 family belongs to the comparator hierarchy within analog ICs and broader semiconductor signal-processing devices. Its four independent channels allow a single package to implement multiple sensing, protection, or level-conversion functions without requiring four separate single-comparator packages.
The LM339 family is designed for wide supply-voltage operation and common-mode input ranges that include ground. According to the Texas Instruments product page, the B-version is a drop-in replacement for LM239, LM339, and LM2901 devices, while the differential input range can equal the maximum-rated supply voltage of 38 V. Open-collector outputs allow wired-AND operation and require an external pull-up resistor. The outputs are designed to drive TTL, MOS, and CMOS-compatible logic.
The verified specifications identify a maximum input offset of 0.37 mV, an input bias current of 3.5 nA, and a supply current of 200 uA per comparator. A faster response is also listed as a family improvement. These characteristics make the LM339 useful when a system must compare low-level sensor signals against adjustable references while tolerating substantial supply variation. The open-collector architecture is especially useful where multiple channels must share a pull-up or where a wired fault-detection signal is required.
Typical uses include industrial control systems, battery-powered monitoring equipment, sensor threshold circuits, window or level comparators, overvoltage detection, and general digital interface conditioning. The wide operating range is valuable in industrial systems, while the low 200 uA per-comparator supply current supports low-power monitoring designs. Each internal comparator is electrically independent, allowing unused channels to be configured according to the manufacturer datasheet.
Layout should preserve a low-impedance ground reference and keep input and feedback traces short because comparison accuracy can be affected by input offset, bias current, and parasitic coupling. Open-collector outputs require suitable pull-up resistors and adequate logic-level current margin. Review the manufacturer pin-description table before assigning tracks because input, output, supply, and ground functions are distributed across the 14-pin TSSOP.
This page combines the LM339 family specifications with practical interpretation of supply range, input behavior, output compatibility, package construction, application fit, and replacement considerations. It helps engineers compare the device against closely related TI parts while keeping PCB footprint, logic interface, and analog performance requirements in view.
Alternatives de remplacement direct pour LM339PWRG3 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec LM339PWRG3 (même facteur de forme et même empreinte) — différant par Logic Compatibility, Output Type, Package.
LM339PWR
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →LM239PWR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LM2901PWR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LM2901PWD
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LM239PW
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LM339PWRG3 Valeurs maximales et caractéristiques électriques
| Comparator Type | Quad differential comparator |
| Number of Channels | 4 channels |
| Single-Supply Voltage Range | 2 V to 36 V |
| Dual-Supply Voltage Range | ±1 V to ±18 V |
| Maximum Supply Voltage | 36 V |
| Maximum Differential Input Voltage | ±38 V |
| Input Offset Voltage | 0.37 mV maximum |
| Input Bias Current | 3.5 nA maximum |
| Courant d'alimentation | 200 uA per comparator |
| Type de sortie | Open-collector |
| Logic Compatibility | TTL, MOS, and CMOS compatible |
| Common-Mode Input Range | Includes ground |
| ESD Rating | 2 kV HBM |
| Boîtier | 14-TSSOP, 0.173 inch x 4.40 mm width |
| Type de montage | Surface mount |
Guide de configuration des broches du LM339PWRG3 14-tssop, 0.173 inch x 4.40 mm width
Configuration des broches du LM339PWRG3 (boîtier 14-tssop, 0.173 inch x 4.40 mm width). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour LM339PWRG3.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
LM339PWRG3 convient pour 6 applications: Industrial Sensor Threshold Detection, Battery Monitoring and Protection, Overvoltage and Undervoltage Detection, Level and Window Monitoring, Open-Collector Fault Bus, Low-Power Remote Sensing.
Industrial Sensor Threshold Detection
The LM339PWRG3 is suitable for comparing a sensor signal with an adjustable reference because it provides four independent differential comparator channels in one 14-pin TSSOP. Its 0.37 mV maximum input offset and 3.5 nA maximum input bias current help limit errors when the sensed signal is small or the source impedance is high. Each channel can evaluate a separate limit or provide hysteresis through positive feedback. The open-collector output can be pulled up to the local logic supply and shared where wired-AND behavior is useful. Because the device accepts supplies up to 36 V, it can also monitor higher-voltage industrial signals when the selected operating point remains inside the manufacturer input and common-mode limits.
Recommandé
Battery Monitoring and Protection
The four independent channels in the LM339PWRG3 can monitor several battery-related voltages, such as pack level, charger status, or auxiliary rail thresholds. Its supply current of 200 uA per comparator is useful in low-power equipment because each channel consumes relatively little bias current. The wide single-supply range of 2 V to 36 V allows the comparator to operate across many battery-derived voltage domains, while the common-mode input range includes ground for low-side sensing. Open-collector outputs can pull up to a separate low-voltage logic rail if the system architecture permits it, enabling a mixed-voltage protection scheme. Final thresholds, input limits, and pull-up rails should be checked against the manufacturer datasheet for the intended cell chemistry and operating range.
Recommandé
Overvoltage and Undervoltage Detection
LM339PWRG3 is appropriate for power-supply protection because four independent comparator channels can detect overvoltage, undervoltage, and rail sequencing conditions without using separate packages. The wide 2 V to 36 V single-supply range supports industrial and distributed power systems, while open-collector outputs permit multiple fault signals to share a common pull-up for wired-AND behavior. A fault output can remain compatible with TTL, MOS, or CMOS logic when the pull-up voltage and sink-current requirements are respected. Designers should place the reference network close to the relevant input and route the sensed rail away from switching nodes. Confirm the exact common-mode range, response time, and output rating in the datasheet before setting production thresholds.
Recommandé
Level and Window Monitoring
A pair of LM339PWRG3 channels can form an upper and lower threshold window, while the remaining channels can monitor other analog quantities. The differential input arrangement permits comparison of a feedback voltage against a reference, and the low 0.37 mV maximum offset is valuable when the monitored window is narrow. Its 14-pin TSSOP package keeps four channels compact, although input routing must avoid coupling between adjacent channels. Open-collector outputs can drive fault indicators or logic inputs through external pull-ups. For accurate window measurements, use stable reference components, account for input bias current when selecting divider resistance, and keep the reference node away from high-current switching paths. The manufacturer pin-description table should be used for final channel assignment.
Recommandé
Open-Collector Fault Bus
The LM339PWRG3 open-collector architecture is well suited to a wired-AND fault bus because each comparator can pull a shared line low when a monitored condition fails. Four channels can report separate faults while one pull-up resistor establishes the inactive high level. This arrangement reduces the number of digital input pins required by a controller and works with TTL, MOS, and CMOS-compatible logic when the pull-up voltage is appropriate. The common-mode input range includes ground, supporting low-side fault sensing. Designers must verify the maximum output sink current and ensure that one asserted channel does not create excessive rise time for the shared bus. Use short output routing and a pull-up value based on capacitance, leakage, and required logic speed.
Recommandé
Low-Power Remote Sensing
The LM339PWRG3 can support remote or low-power sensing functions because each comparator consumes 200 uA of supply current according to the listed family specifications. A sensor signal can be compared with a reference to produce a digital threshold event without continuously operating a more complex microcontroller analog front end. Its wide supply-voltage envelope also accommodates the range of rails commonly found in remote industrial equipment. The open-collector output allows the sensing node to remain in a high-impedance state until an event occurs, which helps manage system power when paired with suitable pull-up and downstream logic. Account for the total current of four active channels, reference-network consumption, and pull-up loading in a low-power budget. Verify leakage and propagation behavior under the expected temperature range before deployment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LM339PWRG3 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LM339PWR | LM239PWR | LM2901PWR | LM2901PWD | LM239PW |
|---|---|---|---|---|---|---|
| Package | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Comparator Configuration | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels |
| Single-Supply Voltage Range | 2 V to 36 V | 2 V to 36 V | 2 V to 36 V | 2 V to 36 V | 2 V to 36 V | 2 V to 36 V |
| Dual-Supply Voltage Range | ±1 V to ±18 V | ±1 V to ±18 V | ±1 V to ±18 V | ±1 V to ±18 V | ±1 V to ±18 V | ±1 V to ±18 V |
| Output Type | Open-collector | Open-collector | Open-collector | Open-collector | Open-collector | Open-collector |
| Input Offset Voltage | 0.37 mV maximum | 0.37 mV maximum | 0.37 mV maximum | 0.37 mV maximum | 0.37 mV maximum | 0.37 mV maximum |
| Input Bias Current | 3.5 nA maximum | 3.5 nA maximum | 3.5 nA maximum | 3.5 nA maximum | 3.5 nA maximum | 3.5 nA maximum |
| Supply Current | 200 uA per comparator | 200 uA per comparator | 200 uA per comparator | 200 uA per comparator | 200 uA per comparator | 200 uA per comparator |
| ESD Rating | 2 kV HBM | 2 kV HBM | 2 kV HBM | 2 kV HBM | 2 kV HBM | 2 kV HBM |
Principaux différenciateurs
- Four independent threshold channels in one package (vs LM339PWR)
- Wide single-supply operating envelope (vs LM239PWR)
- Very low input bias current (vs LM2901PWR)
Notes de conception
Design the open-collector interface around an external pull-up resistor. The resistor sets the inactive output voltage and determines the rise time under capacitive loading. Check that the pull-up rail is within the output rating, that the comparator's sink-current capability covers the worst-case load, and that the resulting high level meets the receiving logic's input threshold.
Keep the differential inputs, reference divider, and feedback components physically close to their associated comparator pins. Route sensed voltages away from switching-node traces and maintain a low-impedance ground return beneath the circuit. Because the listed input bias current is as low as 3.5 nA, high-value divider networks can introduce meaningful errors and should be evaluated as part of the complete reference design.
Do not treat the 36 V supply rating as permission for every input to reach 36 V. Common-mode limits, differential input limits, supply sequencing, and output pull-up voltage are separate constraints. Verify each input and output against the manufacturer datasheet, particularly when monitoring high-energy industrial nodes or powering the device from an unusual dual-supply arrangement.
Informations de conformité
The component is a general-purpose analog comparator, so AEC-Q100 automotive qualification is not applicable. RoHS, REACH, lead-free, halogen-free, and conflict-minerals statuses require confirmation from the manufacturer product or declaration documentation.
