DP83950BVQB - IEEE 802.3 Ethernet Repeater Controller | TI
Référence : DP83950BVQB ✓ ActifDP83950BVQB Présentation
A Repeater Interface Controller is an interface IC within the broader Ethernet networking and communications-controller category. In an Ethernet topology, a repeater receives and regenerates signals from one network segment onto another. The RIC coordinates the physical-layer attachment, collision handling, partition management, and system monitoring functions required by an IEEE 802.3 repeater implementation. The DP83950BVQB is therefore intended for designers building dedicated Ethernet hubs, concentrators, repeater cards, and other legacy 10BASE-T network equipment.
The principal characteristics of the DP83950BVQB are its IEEE 802.3 repeater focus, 4.75 V to 5.25 V operating supply range, approximately 380 mA specified supply current, and 160-QFP package. The 160-pin package exposes the numerous repeater, port, control, and power-management connections needed for a multiport network repeater. Its size and pin count make it more appropriate for established repeater boards than compact embedded network nodes.
The DP83950B family is associated with the National Semiconductor legacy product line that was subsequently represented under Texas Instruments. The device should be selected based on the original repeater architecture, electrical timing requirements, PCB footprint, and the availability of the associated Ethernet magnetics and physical-layer circuitry. The verified distributor information identifies the part as a specialized interface component rather than a general-purpose microcontroller.
Typical applications include IEEE 802.3 repeater units, Ethernet hubs, network concentrators, multiport repeater cards, and legacy industrial or telecommunications Ethernet equipment. A design must provide the required 5 V supply, correct decoupling, Ethernet transformer or magnetics interfaces, and the appropriate transmission-line and signal-integrity implementation. The 160-QFP footprint requires careful fanout planning because the package has a high pin count and a large land pattern.
Design considerations include verifying the complete pinout against the manufacturer datasheet, confirming the exact package variant, and checking the controller's system-level timing and reset requirements. The datasheet and distributor records should be used as the authority for pin functions, electrical limits, and repeater implementation details. This page consolidates the verified distributor information, package identification, application guidance, and sourcing considerations for engineers evaluating the DP83950BVQB.
Alternatives de remplacement direct pour DP83950BVQB — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
DP83950B
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DP83950BVQ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DP83950BVQB Spécifications
| Product Type | Repeater Interface Controller (RIC) |
| Controller Type | Ethernet Repeater Interface Controller |
| Interface Standard | IEEE 802.3 |
| Supply Voltage Range | 4.75 V to 5.25 V |
| Courant d'alimentation | 380 mA |
| Boîtier | 160-QFP, 28 mm x 28 mm |
| Package Family | QFP family |
| Number of Terminals | 160 |
| Terminal Form | Gull wing |
| Package Code | QFP |
| Package Shape | Square |
| Type de montage | Surface Mount |
| Packaging | Tray |
| Temperature Grade | Commercial |
| Primary Application | IEEE 802.3 multiport repeater unit |
| Ethernet Segment Support | Repeater segment partition and jabber functions |
| Manufacturer Reference | National Semiconductor (Texas Instruments) |
Guide de configuration des broches du DP83950BVQB square
Configuration des broches du DP83950BVQB (boîtier square). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour DP83950BVQB.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
DP83950BVQB convient pour 6 applications: IEEE 802.3 Ethernet Repeater Unit, Legacy Ethernet Hub, Ethernet Concentrator, Multiport Repeater Card, Industrial Ethernet Segment Equipment, Telecommunications Network Support.
IEEE 802.3 Ethernet Repeater Unit
The DP83950BVQB is intended to serve as the Repeater Interface Controller in a dedicated IEEE 802.3 multiport repeater. Its verified 4.75 V to 5.25 V operating range supports conventional regulated 5 V repeater hardware, while the approximately 380 mA supply rating identifies the power requirement that must be included in the system budget. The controller coordinates repeater-specific interface behavior described in the DP83950B documentation, including segment-partition and jabber functions. In implementation, the IC works with Ethernet magnetics, line-interface circuitry, and the mechanical or system controls of the repeater. The principal engineering consideration is that this is a 160-QFP legacy controller rather than a compact modern Ethernet transceiver, so the PCB must accommodate its 28 mm by 28 mm footprint, 160 nets, and the associated analog isolation requirements.
Recommandé
Legacy Ethernet Hub
The DP83950BVQB can support the control portion of a legacy Ethernet hub because its verified function is an IEEE 802.3 Repeater Interface Controller. A hub implementation connects multiple Ethernet segments through repeater channels, and the RIC manages the controller-side functions needed by the repeater architecture. The device operates from 4.75 V to 5.25 V and is specified at 380 mA, so the hub power supply and decoupled 5 V distribution should be designed around that operating point. Its 160-QFP package provides numerous repeater and I/O connections but requires careful escape routing. Existing hub designs can benefit most from this part because the complete Ethernet magnetics, port partitioning, isolation, and system-control requirements already match the DP83950B architecture.
Recommandé
Ethernet Concentrator
The DP83950BVQB is applicable to an Ethernet concentrator that combines repeater functions within a shared enclosure. The verified controller description identifies IEEE 802.3 multiport repeater support, making the device relevant to concentrated network-access equipment. Its 5 V operating range and 380 mA specification align with conventional industrial Ethernet hardware built around regulated supplies. The designer must still account for each port's Ethernet transformer or magnetic isolation, port-isolation partitioning, cable surge exposure, and enclosure-level electromagnetic compatibility. Because the DP83950BVQB is a 160-pin legacy RIC, it is most valuable for maintaining or reproducing an established concentrator platform. A fresh product with different mechanical, port-density, or environmental requirements should compare this part against smaller contemporary controllers before committing to the large QFP footprint.
Recommandé
Multiport Repeater Card
The DP83950BVQB fits an add-in or rack-mounted repeater card where one controller coordinates several IEEE 802.3 network ports. The verified 160-QFP package and 28 mm by 28 mm body make the device suitable for established multiport boards with sufficient routing area, while the 380 mA supply specification informs regulator sizing and thermal checks. In a card implementation, each Ethernet port still requires its own magnetic interface and isolation path, and the PCB must preserve controlled-impedance routing where applicable. The controller should be placed so that high-speed repeater signals are not routed through areas likely to pick up switching-node noise from the 5 V supply. Retrofitting an existing repeater card is the strongest use case because the footprint and surrounding network interface circuitry are already proven.
Recommandé
Industrial Ethernet Segment Equipment
The DP83950BVQB can be evaluated for industrial or telecommunications equipment that retains an IEEE 802.3 repeater architecture. The controller's verified 4.75 V to 5.25 V supply range and 380 mA operating specification suit conventional 5 V industrial boards, provided the enclosure, thermal environment, and isolation strategy meet the product requirements. The controller handles the repeater-interface role but does not eliminate the need for Ethernet magnetics, surge protection, port isolation, or a system controller. Because the device is a high-pin-count legacy component, supply-chain continuity should be checked before committing to a new design. For modernization projects where PCB changes are permitted, a smaller Ethernet interface device may reduce assembly and routing cost; for proven repeater platforms, maintaining the DP83950BVQB can minimize redesign risk.
Recommandé
Telecommunications Network Support
The DP83950BVQB is relevant to telecommunications equipment that uses an IEEE 802.3 repeater interface, including legacy line-interface and terminal-adjacent systems. Its verified controller type, 5 V supply range, and 380 mA specification support integration into established 5 V telecom boards. The 160-QFP package requires a dense but deterministic layout, and designers should isolate repeater interfaces from noisy power-conversion stages. For new telecom platforms, the age and size of the QFP controller must be weighed against newer Ethernet PHYs and switching controllers, but the DP83950BVQB is attractive when maintaining an established repeater design because it preserves the original 160-pin footprint and controller architecture. Any deployment should verify current lifecycle and sourcing status directly with the manufacturer.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour DP83950BVQB — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | DP83950B | DP83950BVQ |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 160-QFP (28x28 mm) | 160-QFP family designation | 160-QFP family designation |
| Product Type | Repeater Interface Controller | Repeater Interface Controller | Repeater Interface Controller |
| Interface Standard | IEEE 802.3 | IEEE 802.3 | IEEE 802.3 |
| Number of Terminals | 160 | 160 | 160 |
| Primary Application | IEEE 802.3 multiport repeater unit | IEEE 802.3 multiport repeater unit | IEEE 802.3 multiport repeater unit |
Principaux différenciateurs
- Verified repeater-specific controller function (vs DP83223A-X)
- Documented 5 V operating range (vs NQ83C95)
- Established high-pin-count board footprint (vs NQ83C95)
Notes de conception
Design the 5 V rail for the verified 380 mA operating point of the DP83950BVQB, then add margin for local Ethernet-interface circuitry and transient requirements. Place the required bypass capacitors close to the power and ground pins, use short return paths, and keep the supply distribution away from sensitive repeater signals. The verified excerpts do not provide the manufacturer's recommended capacitor values or maximum supply ripple, so those values must be taken from the datasheet rather than estimated.
The 160-QFP, 28 mm by 28 mm footprint requires deliberate escape routing. Follow the manufacturer land pattern and pin numbering exactly, verify the exposed or thermal requirements if applicable to the package, and preserve a clean ground reference under the device. Because this legacy controller is commonly paired with Ethernet magnetics, route the relevant high-speed or isolation-sensitive nets according to the original reference design rather than treating them as ordinary digital signals.
Maintain separation between repeater interfaces and switching power converters, clock sources, and other noise-producing circuits. Use a compact ground return for each sensitive net, avoid unnecessary loops around interface routes, and confirm that the connector, transformer, and protection components preserve the intended isolation boundary. The supplied excerpts describe IEEE 802.3 repeater functionality but do not provide trace-length, impedance, or isolation-distance requirements, so the complete datasheet and reference circuitry are required.
Do not treat a package name or family designation as proof of drop-in compatibility. Confirm the complete manufacturer MPN, pinout, supply limits, timing, temperature grade, and package drawing before ordering a substitute. The DP83950BVQB uses a 160-terminal QFP package, and a mismatched pin map can damage the PCB even when the alternative appears to have the same number of terminals. Also avoid assuming that comparison-tool results prove functional interchangeability.
Informations de conformité
The supplied distributor and datasheet listings do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown rather than being inferred from the manufacturer or package.
