P82B96PW - 2-Channel 2-15V I2C Bus Extender | TI
Référence : P82B96PW ✓ ActifP82B96PW Présentation
The P82B96 family belongs to the bidirectional bus-buffer category, which includes I2C buffers, SMBus repeaters, level translators, and bus extenders. Unlike a unidirectional logic buffer, a bidirectional bus buffer must detect and preserve the direction of data while allowing both sides to drive and receive the same lines. This makes the device useful between a host controller and remote sensors, EEPROMs, FPGAs, embedded processors, or other I2C targets that operate at a different electrical reference or require additional bus drive capability.
The verified listing identifies P82B96PW as a 2-channel, 400 kHz buffer/reDriver in an 8-pin TSSOP package. The manufacturer describes the device family as a 2-bit bidirectional 2- to 15-V I2C/SMBus buffer and cable extender. The operating temperature range shown in the verified part information is -40 °C to +85 °C. The PW package is a compact surface-mount form suitable for industrial and embedded board layouts, while the 2-bit configuration reduces the number of separate buffer packages needed when multiple related bus lines must be conditioned.
A key design consideration is the relationship between bus capacitance, cable or trace length, pull-up resistance, and supported clock rate. Buffering does not remove the need for correct I2C pull-up placement; it provides an intermediate drive point that can isolate the source-side and remote-side buses. The engineer should verify voltage compatibility on both sides, account for the maximum remote-bus loading, and test the complete network at the intended 400 kHz operating condition. The verified datasheet source should be consulted for detailed logic thresholds, timing, and application limits.
Typical uses include extending an I2C sensor bus in industrial control equipment, buffering an SMBus connection in a power system, separating a controller from a cable-connected peripheral, and bridging logic domains when voltage-level and current requirements differ. It is also useful in test fixtures and embedded platforms where a long cable or dense peripheral load would otherwise weaken the original bus. Compared with a simple series resistor or passive level shifter, the P82B96 provides an active bidirectional buffer and defined cable-extension function, while still requiring careful external pull-up and grounding design.
This product page consolidates the verified manufacturer description, distributor listing information, package identification, pricing reference, and application-oriented guidance. It does not infer unprovided electrical thresholds or invent a cross-brand substitute where the supplied cross-reference data does not establish pin compatibility. The result is intended to support initial component selection and PCB planning, followed by validation against the official P82B96 datasheet and application circuit.
Alternatives de remplacement direct pour P82B96PW — 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 P82B96PW (même facteur de forme et même empreinte) — différant par Package.
P82B96PWR
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Voir la fiche technique →P82B96PW Spécifications
| Product Type | 2-bit bidirectional bus buffer and cable extender |
| Bus Compatibility | I2C/SMBus compatible |
| Channel Count | 2 channels |
| Operating Voltage Range | 2 V to 15 V |
| Maximum Bus Frequency | 400 kHz |
| Bidirectional Data Transfer | Yes |
| Boîtier | 8-pin TSSOP (PW) |
| Plage de température de fonctionnement | -40 °C to +85 °C |
| Type de montage | Surface mount |
| DigiKey Description | Buffer, ReDriver 2 Channel 400kHz 8-TSSOP |
| Manufacturer Function | Bidirectional data transfer between I2C bus and other bus configurations with different voltage and current levels |
| Cable Extension Function | Yes |
| I2C Bus Standards | I2C and SMBus compatible |
| Output Drive Configuration | Dual bidirectional bus buffer |
| LCSC Price Reference | $3.8578 as of 2026-10-23 |
| Manufacturer Datasheet Source | Texas Instruments P82B96 I2C-compatible dual bidirectional bus buffer datasheet |
Guide de configuration des broches du P82B96PW 8-pin tssop (pw)
Configuration des broches du P82B96PW (boîtier 8-pin tssop (pw)). 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 P82B96PW.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
P82B96PW convient pour 6 applications: Industrial I2C Sensor-Bus Extension, SMBus Power-System Isolation, Embedded Processor-to-Sensor Bus Segmentation, FPGA and Logic-Device Bus Conditioning, Remote Test and Measurement Fixture, Battery-Powered Sensor Hub Bus Extension.
Industrial I2C Sensor-Bus Extension
The P82B96PW fits industrial systems that place remote temperature, pressure, or configuration sensors several cable positions away from a controller. Its verified 2 V to 15 V range and 400 kHz capability make it suitable for a buffered I2C segment, while the bidirectional structure lets the controller continue addressing and receiving data from the remote devices. Place the buffer between the local bus and the extended bus, provide separate pull-up networks appropriate to each side, and verify capacitance and rise time with the actual wiring.
Recommandé
SMBus Power-System Isolation
A P82B96PW can provide a bidirectional interface point in an SMBus-based power system where the supervisory controller and remote power-management circuitry are separated by wiring distance or load. The verified Texas Instruments description identifies I2C/SMBus compatibility and operation from 2 V to 15 V, allowing the buffer to bridge buses whose voltage and current conditions differ. The designer must still select the correct pull-up voltage, keep the return path continuous, and validate clock timing and fault behavior across the power system’s operating envelope.
Recommandé
Embedded Processor-to-Sensor Bus Segmentation
The P82B96PW is useful when an embedded processor must communicate with a remote sensor, EEPROM, or FPGA through a longer or more heavily loaded I2C branch. Its two bidirectional channels can support a paired bus segment, and the 400 kHz operating point aligns with the common I2C performance range identified by Texas Instruments. The buffer should be placed at a deliberate segmentation point rather than simply added in series; maintain local pull-ups on both sides and validate the complete network against the highest bus frequency and cable capacitance.
Recommandé
FPGA and Logic-Device Bus Conditioning
A P82B96PW can condition an I2C connection between an FPGA or other programmable logic device and a peripheral board. The active bidirectional buffer helps isolate the source-side and remote-side loads, while the verified 2 V to 15 V range gives the designer a broad rail-selection window. It does not alter the I2C protocol, so the FPGA logic must still generate valid start, address, data, and stop sequences. Confirm signal thresholds and timing in the final device datasheet before applying the buffer to high-speed or nonstandard bus configurations.
Recommandé
Remote Test and Measurement Fixture
The P82B96PW is appropriate for test fixtures where an instrument controller communicates with a probe card, remote module, or cable-connected sensor over I2C. Buffering can reduce the impact of fixture capacitance and provide a defined split between the controller-side and device-side buses. Because the verified information does not provide every threshold, delay, or drive-current detail, use the manufacturer datasheet for timing margins. External pull-ups, protection resistors, grounding, and cable length should be validated in the actual fixture arrangement.
Recommandé
Battery-Powered Sensor Hub Bus Extension
A battery-powered sensor hub can use the P82B96PW to extend an I2C branch to a remote sensor module without allowing the full cable capacitance to load the controller directly. The verified 2 V minimum operating voltage is relevant to low-voltage systems, while the 400 kHz limit provides a defined design ceiling. The active buffer’s additional current and external pull-up requirements must be included in a battery budget. Confirm the actual system’s low-voltage behavior, startup sequencing, and the datasheet’s recommended application circuit before production use.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour P82B96PW — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | P82B96PWR |
|---|---|---|
| Product type | 2-bit bidirectional I2C/SMBus buffer and cable extender | 2-bit bidirectional I2C/SMBus buffer and cable extender |
| Brand | Texas Instruments | Texas Instruments |
| Channel count | 2 channels | 2 channels |
| Operating voltage range | 2 V to 15 V | 2 V to 15 V |
| Maximum bus frequency | 400 kHz | 400 kHz |
| Bidirectional operation | Yes | Yes |
| Package | 8-pin TSSOP (PW) | 8-pin TSSOP (PW) |
| Cable-extension function | Yes | Yes |
Principaux différenciateurs
- Bidirectional cable-extension function (vs P82B96PWR)
- Two-channel integration (vs P82B96PWR)
- Verified supply reference (vs P82B96PWR)
Notes de conception
Use separate pull-up networks on the controller-side and remote-side I2C buses, and place the P82B96PW at the intended bus segmentation point. The verified device is rated for 400 kHz, but the complete wiring, pull-up resistance, capacitance, cable length, and clock timing must be checked together. Do not assume that inserting a buffer automatically preserves timing in a long or heavily loaded cable.
Keep the device, its local pull-ups, and any bypass or protection components close to the intended I2C branch. Maintain a continuous ground reference between the controller and remote bus, and route the two bidirectional channels consistently. The verified package is an 8-pin TSSOP (PW), so use the official TI land pattern and confirm pin functions against the P82B96 datasheet before fabrication.
Do not substitute P82B96PWR for P82B96PW solely because both names appear similar. The supplied data confirms the P82B96 family and 8-pin TSSOP/PW package context but does not provide a complete verified drop-in comparison. Check exact pinout, ordering suffix, temperature range, electrical limits, and assembly footprint against the manufacturer datasheet before substituting.
Informations de conformité
The supplied verified data does not include explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for P82B96PW.
