DP83848YB/NOPB - 10/100 Ethernet PHY | Texas Instruments
Référence : DP83848YB/NOPB ✓ ActifDP83848YB/NOPB Présentation
An Ethernet PHY transceiver is the physical-layer component that converts digital Ethernet data into differential signals suitable for twisted-pair cabling, while receiving and decoding incoming signals back into digital data. In the hierarchy of network interfaces, the PHY connects a MAC or embedded processor through a digital interface to an Ethernet medium through the 10BASE-T or 100BASE-TX analog front end.
The DP83848YB/NOPB supports 10-Mbps and 100-Mbps Ethernet operation and includes JTAG support for boundary-scan-based board manufacturing, diagnostic, and test workflows. Its single-port architecture targets one copper Ethernet channel per device. The extended temperature qualification distinguishes it from commercial-temperature PHY variants when equipment must operate reliably across a broader environmental range.
The device integrates the PHY functions required for copper Ethernet connectivity, including physical signaling for 10BASE-T and 100BASE-TX links and digital data exchange with the upper protocol layer. Exact clocking, register, reset, and media-access interface details should be established from the manufacturer datasheet and application circuit before schematic capture. JTAG access provides an additional board-level diagnostic route when included in the system test plan.
Typical applications include industrial Ethernet controllers, factory automation equipment, embedded routers, motor-drive systems, building infrastructure, industrial communications gateways, and temperature-extended control systems. Pairing it with a suitable Ethernet-capable microcontroller or processor allows a compact embedded design to add wired network connectivity without implementing the analog PHY separately.
Layout is a critical part of PHY implementation. Keep the digital interface and PHY traces short, provide continuous ground planes, decouple supply rails close to the device, and follow the manufacturer’s differential-pair and magnetics guidance to limit radiated emissions and maintain signal integrity. The exposed thermal area must also be connected and thermally coupled according to the package design guidance.
This product page consolidates the exact ordering information, package characteristics, operating-temperature limits, interface features, application context, and engineering considerations needed to evaluate the DP83848YB/NOPB before beginning a board design. It also distinguishes genuine same-family drop-in candidates from options that would require package, clock, feature, or interface revalidation.
Alternatives de remplacement direct pour DP83848YB/NOPB — 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 DP83848YB/NOPB (même facteur de forme et même empreinte) — différant par Product Type, Auto-MDIX, MSL Level, Number of Ports, Operating Temperature.
DP83848YB
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DP83848IVVX/NOPB
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →DP83848C
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DP83848KSQ/NOPB
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →DP83848I/NOPB
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DP83848YB/NOPB Spécifications
| Product Type | Single-port Ethernet physical-layer transceiver |
| Supported Ethernet Speed | 10/100 Mbps |
| Number of Ports | 1 port |
| JTAG Support | Supported |
| Plage de température de fonctionnement | -40°C to +125°C |
| Package Type | HLQFP (PTB), 48 pins |
| Package Body Size | 7 mm x 7 mm |
| Type de montage | Surface mount |
| Exposed Thermal Pad | Present in 48-LQFP-EP package |
| Maximum Link Rate | 100 Mbps |
Guide de configuration des broches du DP83848YB/NOPB 7 mm x 7 mm
Configuration des broches du DP83848YB/NOPB (boîtier 7 mm x 7 mm). 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 DP83848YB/NOPB.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
DP83848YB/NOPB convient pour 6 applications: Industrial Ethernet Gateways, Factory Automation Controllers, Embedded Network Terminals, Building Infrastructure Equipment, Motor Drives and Servo Systems, Industrial Communications Hubs.
Industrial Ethernet Gateways
The DP83848YB/NOPB is suitable for industrial gateways that convert local serial or fieldbus data to 10/100-Mbps Ethernet. Its single-port PHY handles one copper link, while the -40°C to +125°C operating range supports equipment installed in factories, process plants, and industrial vehicles. Place the PHY close to the Ethernet transformer and RJ45 or rugged connector, following the manufacturer layout for differential routing and exposed-pad thermal vias. Pair it with an Ethernet-capable MCU or processor so protocol conversion remains local and deterministic. The 100-Mbps link is sufficient for supervisory traffic, configuration data, and moderate sensor or controller payloads, although sustained bulk transfers may justify a gigabit PHY.
Recommandé
Factory Automation Controllers
The DP83848YB/NOPB can provide wired connectivity in PLCs, remote I/O modules, servo interfaces, and factory automation controllers. A 10/100-Mbps PHY is appropriate for cyclic control traffic, diagnostics, web configuration, and plant-network management when a gigabit connection is unnecessary. The extended -40°C to +125°C range helps the design address temperature variation near machinery and enclosed control cabinets. Keep the PHY-to-MAC interface short, place supply decoupling at the pins, and preserve continuous ground references beneath the differential pairs. Ethernet magnetics and surge protection should be selected to match the cable environment and installation isolation requirements.
Recommandé
Embedded Network Terminals
The DP83848YB/NOPB is useful in embedded terminals that add wired Ethernet to a local processor without requiring a complete network controller. Typical equipment includes building controllers, access-control terminals, environmental monitors, and remote supervisory units. The device supports 10- and 100-Mbps links, allowing shared industrial networks where a common 100-Mbps segment serves several low-bandwidth nodes. Its 48-pin PTB package is larger than the smallest PHY options but offers a well-established footprint with an exposed thermal pad. The host processor should provide the required clock, reset sequencing, firmware driver, and media-access control behavior specified by the manufacturer interface.
Recommandé
Building Infrastructure Equipment
The DP83848YB/NOPB supports building infrastructure products such as room controllers, HVAC gateways, access panels, and energy-management nodes. The -40°C to +125°C rating is valuable in unheated equipment rooms, wall boxes, and enclosed panels where temperature can vary considerably. A 100-Mbps copper link provides enough bandwidth for supervisory protocols, configuration access, and standard building-network traffic. Designers should account for the Ethernet isolation boundary, grounding strategy, cable surge exposure, and regulatory requirements for connected equipment. The PHY’s single-port arrangement also keeps routing and magnetics straightforward compared with a multi-port device.
Recommandé
Motor Drives and Servo Systems
The DP83848YB/NOPB can add diagnostic and service-network connectivity to motor drives, servo amplifiers, and robotics controllers. Ethernet links can carry configuration, real-time status, fault information, and service traffic while avoiding additional connectors for maintenance access. The extended temperature range is relevant to drives installed near motors, where enclosure temperatures can rise quickly. Maintain separation between Ethernet differential pairs and high-current motor-drive power paths, and use a solid ground-plane strategy to reduce coupling. The 100-Mbps capability handles standard Ethernet protocols, but a control system requiring deterministic higher-bandwidth timing should independently assess synchronization and latency requirements.
Recommandé
Industrial Communications Hubs
The DP83848YB/NOPB can serve one copper port in a compact industrial communications hub, protocol bridge, or diagnostic controller. Multiple PHY devices can be placed around a switching or bridging backbone, although each DP83848YB/NOPB independently supports one 10/100-Mbps port. The -40°C to +125°C range allows placement in temperature-extended bridge enclosures. Board planning should minimize differential impedance discontinuities, provide close decoupling, and use a continuous reference plane under the copper pairs. The JTAG feature can assist boundary-scan inspection and production diagnostics if the product’s test architecture exposes the JTAG chain. Cabling and enclosure selection remain important for reliable operation in electrically noisy industrial environments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour DP83848YB/NOPB — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | DP83848YB | DP83848I | DP83848C | DP83848KSQ/NOPB | DP83848I/NOPB |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-LQFP-EP (7x7), PTB | 48-LQFP-EP (7x7), PTB | 48-LQFP-EP (7x7), PTB | 48-LQFP-EP (7x7), PTB | 48-LQFP-EP (7x7), PTB | 48-LQFP-EP (7x7), PTB |
| Supported Speed | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Number of Ports | 1 port | 1 port | 1 port | 1 port | 1 port | 1 port |
| Pin Count | 48 pins | 48 pins | 48 pins | 48 pins | 48 pins | 48 pins |
Principaux différenciateurs
- Extended-temperature operation (vs DP83848I)
- Integrated board diagnostics (vs DP83848C)
- Established 48-pin thermal-pad footprint (vs DP83848KSQ/NOPB)
Notes de conception
Route the Ethernet differential pairs as a tightly coupled pair over a continuous ground plane, with no plane changes, stubs, or test-point breaks unless the test structure is designed for high-speed integrity. Keep the PHY, magnetics, and connector in the same signal path, minimize the connector-to-PHY distance, and observe the manufacturer’s differential impedance and pair-length guidance. These practices reduce reflections, common-mode conversion, and radiated emissions in industrial installations.
The 48-LQFP-EP package requires its exposed thermal area to be connected to the ground plane through the land pattern and thermal vias recommended by the manufacturer. Keep the via field close to the pad and avoid placing high-current or temperature-sensitive circuitry directly beneath the PHY. Validate the final assembly under worst-case ambient temperature and sustained 100-Mbps traffic rather than relying only on a nominal thermal estimate.
Place all required bypass capacitors immediately beside their associated supply pins, with short ground vias and an uninterrupted ground reference. Keep the digital host interface away from the transformer-side analog section, and do not route high-current switching or motor-drive nodes beneath the differential pairs. Validate power sequencing, reset release, and clock startup because incorrect sequencing can prevent the PHY from acquiring a stable link even when the schematic connections are correct.
Do not assume that two PHY family members are interchangeable solely because both are labeled 10/100 Ethernet. Before replacing DP83848YB/NOPB, compare the exact package drawing, exposed-pad dimensions, pin names, digital interface voltage, clock source, reset polarity, register behavior, and media configuration. Also verify the orderable suffix and temperature grade. These checks prevent a mechanically similar device from creating boot failures or subtle interoperability problems.
Informations de conformité
The manufacturer product and ordering pages identify the device and its operating-temperature grade, but no specific environmental or material-compliance declaration is included in the supplied product information. Automotive qualification must not be inferred from the YB designation.
