ISO722MD - 150 Mbps Digital Isolator | Texas Instruments
Teilenummer: ISO722MD ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
ISO722MD Übersicht
A digital isolator is a semiconductor interface device that transfers a digital signal across an electrically isolated barrier while preventing direct conductive current between the two sides. ISO72x devices use silicon-dioxide insulation to provide galvanic isolation up to 4000 V, as described in the family documentation. This isolation helps protect low-voltage circuitry from high-voltage transients, ground-potential differences, and noise-coupled environments when used with an appropriate isolated power supply.
Key features include a maximum signaling rate of 150 Mbps, low propagation delay, low pulse-width distortion, and typical transient immunity of 50 kV/µs according to the family datasheet information. The ISO722MD supports operation across the -40°C to +125°C temperature range and is identified by Texas Instruments as a drop-in replacement for most opto and magnetic isolators. Its failsafe output behavior is important when the isolated link loses input-drive validity.
The ISO722MD is suited to industrial control, test and measurement, communications, and power-conversion systems where a high-speed control or data signal must cross an isolation boundary. The enable input allows the output to be controlled during power-up or fault conditions. The 8-SOIC package supports conventional surface-mount assembly, while the isolation rating and transient immunity help simplify compliance-oriented system design.
Designers should confirm supply sequencing, input and output logic levels, decoupling, and the isolation-capacitor requirements against the manufacturer datasheet. For systems requiring reinforced isolation, working voltage, creepage, clearance, and applicable safety standards must be evaluated for the complete PCB layout. The ISO722M family documentation also notes that transient protection and propagation delay differ among vendors, so compatibility should not be inferred from package appearance alone.
Drop-in-Alternativen für ISO722MD – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ISO722MDR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ISO722DG4
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ISO722MD Technische Daten
| Product Type | Single-channel digital isolator |
| Signaling Rate | 0 Mbps to 150 Mbps |
| Isolation Voltage | 2500 Vrms |
| Common-Mode Transient Immunity | 25 kV/µs minimum listed value; 50 kV/µs typical family value |
| Versorgungsspannung | 3.3 V and 5 V |
| Number of Channels | 1 channel |
| Enable Function | Yes, single-channel digital isolator with enable |
| Failsafe Output | Failsafe output |
| Betriebstemperatur | -40°C to +125°C |
| Gehäuse | 8-pin SOIC (D), 0.154 inch body width, 3.90 mm width |
| Montageart | Surface mount |
| Isolation Technology | Silicon dioxide (SiO2) insulation barrier |
| UL Certification | UL 1577 component recognition listed in family documentation |
| IEC Certification | IEC 60747-5-2, IEC 61010-1, IEC 62368-1 and IEC 60747-17 family documentation references |
ISO722MD 8-pin soic (d), 0.154 inch body width, 3.90 mm width Pinbelegungsleitfaden
Pinbelegung für ISO722MD (8-pin soic (d), 0.154 inch body width, 3.90 mm width-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für ISO722MD.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ISO722MD ist geeignet für 6 Anwendungs: Industrial control isolation, Power-conversion control, Test and measurement interfaces, Communication link isolation, Medical and diagnostic equipment, Automotive and transportation electronics.
Industrial control isolation
The ISO722MD fits isolated high-speed control links between a controller and power or actuator electronics. Its 150 Mbps signaling rate provides timing headroom for fast digital command and status signals, while 2500 Vrms isolation and 25 kV/µs minimum CMTI help separate the two domains during electrically noisy operation. The 3.3 V and 5 V supply compatibility supports mixed logic environments. Designers should use the manufacturer recommended decoupling and isolation layout, and verify the timing budget against propagation delay and pulse-width distortion before production.
Empfohlen
Power-conversion control
ISO722MD can carry PWM, gate-driver control, or supervisory signals across the boundary between a primary and secondary power-conversion domain. The single-channel 150 Mbps device allows the control signal to cross the barrier without requiring a conductive ground path, while the failsafe output provides a defined starting point for fault analysis. Use the exact timing and supply data from the ISO722M datasheet, observe the isolation creepage and clearance requirements, and check whether the application needs the enable function or a different channel count.
Empfohlen
Test and measurement interfaces
The ISO722MD is appropriate for measurement systems that need a high-speed trigger, latch, or digital-control signal to cross an isolation barrier. Its 150 Mbps capability can reduce limitations caused by slower opto- or magnetic-isolator alternatives, while the 2500 Vrms isolation rating helps protect sensitive instrumentation. The design must still account for probe loading, ground-loop elimination, timing skew, and the exact input and output logic levels. Use the manufacturer pinout and timing curves rather than relying on the distributor package description.
Empfohlen
Communication link isolation
ISO722MD can isolate a high-speed digital communication path when the endpoint electronics must remain galvanically separated from a host, controller, or external connector. The 150 Mbps signaling rate is useful for control messages, serialized status, or other short digital transactions that do not require multi-channel isolation. Its enable pin supports interface enable and default-output control, but the design must verify protocol timing and the actual data-rate tolerance. Keep the isolation barrier geometry and return-current paths consistent with the manufacturer layout guidance.
Empfohlen
Medical and diagnostic equipment
The ISO722MD may be considered for medical or diagnostic equipment when a high-speed digital signal must cross a patient-protection or equipment-safety barrier. Its 150 Mbps rate and 2500 Vrms isolation can be valuable for control and data paths, but IEC 60601 and related medical-system requirements are not established by the supplied data. The final suitability depends on the complete barrier, working voltage, leakage, creepage, clearance, fault behavior, and risk assessment. Validate the exact ISO722MD variant with the manufacturer and the applicable safety standards.
Empfohlen
Automotive and transportation electronics
ISO722MD can support isolated control or communication links in transportation systems where galvanic separation and transient tolerance are important. The 150 Mbps signaling rate is suitable for many digital control signals, and the family documentation lists operation from -40°C to +125°C. However, the supplied data does not identify an automotive-qualified ISO722MD suffix or AEC-Q100 status, so it should not be assumed suitable for harsh automotive environments. Confirm qualification, transient immunity, temperature, and system safety requirements before use.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ISO722MD – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ISO722MDR | ISO722DG4 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC (D) | SOIC-8 (D) | SOIC-8 (D) |
Wichtigste Unterscheidungsmerkmale
- High-speed single-channel isolation (vs. ISO722DG4)
- Enable-controlled interface (vs. ISO722MDR)
- Broad supply compatibility (vs. ISO722DG4)
Designhinweise
Follow the ISO722M datasheet isolation-layout recommendation and preserve the specified copper, mask, and component keepout around the isolation barrier. Do not route non-isolated copper, vias, or test points beneath the barrier unless the package and safety requirements explicitly allow it. Validate creepage, clearance, contamination, and working voltage against the completed PCB stackup rather than relying on the 8-SOIC outline alone.
Place input and output bypass capacitors close to the corresponding supply pins and use separate, short return paths for each isolated domain. The device supports 3.3 V and 5 V operation, but the exact supply tolerances, quiescent current, startup behavior, and decoupling requirements must be taken from the ISO722M datasheet. Check that the isolated-side supply is referenced correctly and that ground currents do not cross the isolation boundary.
Treat the 150 Mbps signaling rate as a maximum capability rather than a guarantee that every board route will meet timing. Verify propagation delay, pulse-width distortion, output rise/fall behavior, and the external receiver’s setup and hold requirements. Keep the digital trace away from the isolation barrier and use a controlled return path; otherwise, high edge rates can couple into the isolated side despite the device’s CMTI rating.
Compliance-Informationen
The verified family documentation references UL 1577 and IEC certifications, but the supplied ISO722MD data does not explicitly provide a complete RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration. Verify the exact manufacturer declaration and ordering suffix.
