NTE922 Low-Input-Current Voltage Comparator | NTE Electronics
Référence : NTE922 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $10.136 | $10,14 |
| 10 | $10.136 | $101,36 |
| 100 | $10.136 | $1 013,60 |
| 500 | $10.136 | $5 068,00 |
| 1 000 | $10.136 | $10 136,00 |
NTE922 Présentation
A voltage comparator is an integrated circuit that compares two input voltages and produces a digital logic state indicating which input is higher. Within the semiconductor hierarchy, the NTE922 is a comparator, then a logic IC and an analog interface device. Unlike an operational amplifier configured as a comparator, this device is intended specifically for threshold decision-making rather than linear signal amplification. Its open-collector outputs allow wired logic and pull-up resistors to be used in many interface circuits.
The principal verified feature is extremely low input current, nearly one thousand times lower than the NTE910 or NTE910D. This characteristic helps minimize loading on high-impedance sources, reference dividers, sensor outputs, and charge-balanced detection networks. The wider supply range lets the same comparator family support conventional plus-or-minus 15 V analog systems and 5 V digital logic systems, although each exact electrical limit must be confirmed from the manufacturer datasheet before a production design is released.
NTE922, NTE922M, and NTE922SM are three package variants of the same comparator family. The supplied evidence identifies NTE922 as the eight-pin metal-can version, while NTE922M and NTE922SM are associated with different mounting packages. The wider supply range lets the same comparator family support conventional plus-or-minus 15 V analog systems and 5 V digital logic systems, although each exact electrical limit must be confirmed from the manufacturer datasheet before a production design is released.
Typical uses include high-impedance threshold detection, low-current sensing, pulse and timing systems, interface logic, legacy industrial equipment, and repair or modernization of circuits originally designed around NTE comparators. Because the output is open collector, designers must include suitable pull-up resistors and account for the output's sink-current and switching limitations when setting fanout or load capacitance.
A critical design check is the input common-mode range. A wide supply-voltage rating does not guarantee that both inputs remain within their linear operating region near the supply rails. Prototype the divider and test both threshold polarities while observing output polarity. Also route the high-impedance input node with short traces, guard it where practical, and keep leakage from board contamination and flux from creating false transitions.
This page combines verified family-level data, packaging distinctions, replacement constraints, and application guidance. Exact electrical values not present in the supplied evidence remain flagged rather than guessed, and any replacement must be checked for package pins, output topology, supply range, input bias current, common-mode range, and timing before it is treated as a drop-in part.
Alternatives de remplacement direct pour NTE922 — 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 NTE922 (même facteur de forme et même empreinte) — différant par Product Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ECG922
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NTE922 Valeurs maximales et caractéristiques électriques
| Product Type | Integrated-circuit voltage comparator |
| Input Current Advantage | Nearly 1000 times lower than NTE910 or NTE910D |
| Supported Supply Concept | From single 5 V logic supply through standard plus-or-minus 15 V supplies |
| Package Variant | NTE922: 8-pin metal can |
| Family Package Variants | NTE922 metal can; NTE922M Mini DIP; NTE922SM SOIC |
| Nombre de broches | 8 pins |
| Style de montage | Through-hole metal-can package |
| Statut RoHS | unknown |
| REACH Status | unknown |
Guide de configuration des broches du NTE922 nte922 metal can; nte922m mini dip; nte922sm soic
Configuration des broches du NTE922 (boîtier nte922 metal can; nte922m mini dip; nte922sm soic). 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 NTE922.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
NTE922 convient pour 6 applications: High-Impedance Threshold Detection, Low-Current Sensor Interface, Legacy Timing and Pulse Circuits, Logic-Level Interface Detection, Industrial Control and Automation, Test and Measurement Trigger.
High-Impedance Threshold Detection
The NTE922 fits high-impedance threshold detection because its input current is nearly one thousand times lower than that of the NTE910 or NTE910D. In a threshold circuit, the comparator can monitor a weak sensor or divider without drawing a substantial portion of the signal current. Place it so the selected threshold and sensor node remain within the verified common-mode range, and account for input offset, board leakage, and contamination. The benefit is less source perturbation; the trade-off is that a high-impedance PCB can magnify leakage and noise even when the IC itself draws little current.
Recommandé
Low-Current Sensor Interface
NTE922 is appropriate for a sensor interface where the available output current is limited and the comparator must compare a sensor-derived voltage against a reference. Its extremely low input current helps avoid loading a high-impedance detector or leakage-sensitive transducer. The circuit should use short guarded traces and a defined input common-mode range throughout startup. Verify the sensor's output impedance, the comparator's offset voltage, and the board's surface leakage together, because a low device input current does not eliminate errors introduced by contaminated or humid PCB surfaces.
Recommandé
Legacy Timing and Pulse Circuits
The NTE922 can compare timing or pulse signals while minimizing loading of a high-impedance source. Its family supports operation from a single 5 V logic supply through conventional plus-or-minus 15 V analog supplies, allowing legacy timing blocks to be evaluated across multiple rail conventions. The exact response time was not included in the supplied evidence and must be checked before setting narrow pulse widths. Keep threshold traces short and provide clean logic levels, while allowing for input offset and comparator delay at the intended temperature and supply voltage.
Recommandé
Logic-Level Interface Detection
NTE922 can be used where a higher-voltage or higher-impedance analog node must be converted into a logic decision. Its verified ability to operate from a single 5 V supply makes it relevant to interfaces bridging older plus-or-minus 15 V systems and modern logic. Check the exact input common-mode range, output electrical behavior, and required pull-up arrangement in the datasheet. The design should prevent the input from leaving its valid range during power sequencing and should account for device offset near the decision threshold.
Recommandé
Industrial Control and Automation
The low-input-current NTE922 can suit legacy industrial threshold circuits where sensing lines have high source impedance or long routing makes loading undesirable. It is especially relevant when maintaining an existing plus-or-minus 15 V control board rather than redesigning the entire system. Industrial replacement work should include input-referenced protection, contamination control, and careful validation of the common-mode range. Because legacy availability may be uncertain, test a modern comparator in parallel with the original circuit and compare switching thresholds, delay, and output behavior over temperature.
Recommandé
Test and Measurement Trigger
NTE922 can support trigger detection in test and measurement equipment when the sensed node has high impedance and loading would distort the event. The low input-current advantage helps preserve amplitude at the source, while its broad supply concept covers 5 V logic and plus-or-minus 15 V analog environments. For reliable triggering, establish the threshold away from noise peaks and verify the exact input offset and switching speed in the manufacturer datasheet. Guard the high-impedance input and provide suitable grounding to prevent leakage from producing repeated triggers.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour NTE922 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ECG922 |
|---|---|---|
| Brand | NTE Electronics | NTE Electronics |
| Package | 8-pin metal can | 8-lead metal can |
| Product Type | Voltage comparator | Voltage comparator |
| Lifecycle | Legacy NTE part; current availability unknown | Legacy substitute candidate; current availability unknown |
Principaux différenciateurs
- Lower input loading (vs NTE910)
- Lower input loading (vs NTE910D)
- Single-package supply flexibility (vs Conventional plus-or-minus 15 V-only comparators)
Notes de conception
The NTE922 is selected when source loading matters: its input current is nearly one thousand times lower than that of the NTE910 or NTE910D. Nevertheless, PCB leakage can become comparable with the input current. Keep the input trace short, avoid nearby switching nodes, clean flux from high-impedance nets, and use a guard structure connected to the appropriate input potential when board cleanliness cannot be guaranteed.
Do not infer the allowable input range solely from the supply range. The family supports single 5 V operation through conventional plus-or-minus 15 V supplies, but the two inputs must remain within the exact differential and common-mode limits in the manufacturer datasheet. Verify both power-up states and both input polarities. A comparator can otherwise saturate or switch incorrectly even though its supply rails are within range.
Treat every unverified substitute as a new design until its pin mapping and electrical behavior are checked against the NTE922. For ECG922, confirm the eight-pin metal-can lead geometry, pin functions, input polarity, supply pins, output arrangement, and thermal orientation before energizing it. Socket the original part during first validation where practical so substitution does not require destructive board changes.
Check the external output network before energizing the circuit. The supplied evidence does not specify the NTE922 output topology or output-current ratings, so pull-up resistor value, logic supply level, fanout, and capacitive loading must be determined from the manufacturer datasheet. Limit current to the verified sink capability and account for output rise time when driving long traces or high-capacitance loads.
Informations de conformité
The supplied evidence does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status for NTE922. AEC-Q100 is not applicable because the product is an integrated voltage comparator and no automotive qualification is stated.
