P82B96PWRG4 - 2-15V 400kHz I2C Buffer | Texas Instruments
MPN: P82B96PWRG4 ✓ فعالP82B96PWRG4 نمای کلی
An I2C bus buffer is an interface IC placed between two bus segments to buffer bidirectional clock and data signals. It helps isolate bus capacitance, separate supply domains, extend cable reach, and prevent contention between devices on different portions of a bus. Within the power-management hierarchy, the P82B96 functions as a signal-conditioning and interface component rather than a regulator or digital logic gate.
The principal feature set includes bidirectional data transfer, operation with I2C and SMBus systems, and a supply range covering 2 V through 15 V. Because the two buffered sides can use different logic levels, the device can interface I2C buses operating at different voltages. Its 400 kHz operating capability supports standard Fast-mode I2C communication while providing electrical separation between the main bus and the buffered side.
The device uses two bidirectional channels identified in manufacturer documentation as Tx/Rx and Ty/Ry, with corresponding Sx and Sy bus-side nodes. Manufacturer guidance states that there are no restrictions on interconnecting Tx/Rx and Ty/Ry I/O pins to other P82B96 devices in star or multipoint arrangements. This flexibility supports bus partitioning in systems with multiple isolated branches or line-card slave devices.
Typical applications include separating a main I2C bus from a remote cable segment, translating between different logic voltages, extending an I2C bus to line-card peripherals, and isolating high-capacitance branches from the main bus. The same 8-pin TSSOP footprint is useful for compact industrial, communications, and embedded-control equipment where PCB area is constrained.
Designers should account for each side's pull-up resistor network, verify that all attached devices remain compatible with the target I2C mode and voltage levels, and confirm that the selected logic levels satisfy the device's electrical limits. Because the verified excerpts do not provide a complete pin table, capacitance limits, propagation-delay limits, or thermal data, those values should be confirmed in the manufacturer datasheet before release to production.
This page combines the verified manufacturer description, distributor availability information, package details, pin-compatible substitute evidence, application guidance, and design considerations to support faster component selection and PCB planning without duplicating the full datasheet.
جایگزین‌های drop-in برای P82B96PWRG4 — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای P82B96PWRG4 (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Bidirectional Data Transfer, Bus Compatibility, Package, Device Type.
P82B96PWR
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←P82B96PW
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←P82B96PWG4
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←P82B96PWRG4 مشخصات
| Device Type | 2-bit bidirectional I2C/SMBus buffer and cable extender |
| Bidirectional Channels | 2 channels |
| Operating Power-Supply Voltage Range | 2 V to 15 V |
| Maximum Bus Frequency | 400 kHz |
| Bus Compatibility | I2C and SMBus |
| Voltage-Level Translation | Supported between I2C buses operating at different logic levels |
| Data Transfer | Bidirectional |
| بسته‌بندی | 8-pin TSSOP (0.173 inch, 4.40 mm width) |
| نوع نصب | Surface mount |
| تعداد پین‌ها | 8 pins |
راهنمای پیکربندی پین P82B96PWRG4 8-pin tssop (0.173 inch, 4.40 mm width)
پیکربندی پین برای P82B96PWRG4 (پکیج 8-pin tssop (0.173 inch, 4.40 mm width)). شماره‌گذاری پایه‌ها، عملکردها و نمودارهای اتصال در دیتاشیت سازنده تعریف شده است. برای footprint دقیق و دستورالعمل‌های لحیم‌کاری به آن مراجعه کنید.
داده پین‌آوت تفصیلی موجود نیست برای P82B96PWRG4.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
P82B96PWRG4 مناسب است برای 6 کاربردs: I2C Bus Isolation, I2C Cable Extension, Mixed-Logic-Level I2C Interfaces, Multipoint I2C Branching, Line-Card Peripheral Isolation, Embedded Control Bus Conditioning.
I2C Bus Isolation
The P82B96PWRG4 fits bus-isolation designs because it provides two bidirectional I2C channels, a 2 V to 15 V operating supply range, and operation at up to 400 kHz. It can sit between a main controller bus and a remote branch so that the two bus sections are buffered rather than directly tied together. This arrangement reduces the electrical loading presented by downstream devices and allows pull-up networks to be selected for each logic domain. According to the Texas Instruments product description, the device also supports buses operating at different logic levels, making it useful for segmenting systems with mixed voltage requirements. Each side should receive its own correctly sized pull-up network, and the complete bus topology should be checked for capacitance, rise-time, and contention behavior against the official datasheet.
پیشنهادی
I2C Cable Extension
The P82B96PWRG4 is suitable for extending I2C communication into a cable segment because it buffers two bidirectional signals and supports operation up to 400 kHz. In this topology, the main SDA and SCL nodes connect to the buffered Tx/Rx and Ty/Ry side through the appropriate external network, helping the remote section operate as a controlled branch. The 2 V to 15 V supply range provides flexibility for legacy and modern logic domains, while the buffered topology helps isolate downstream loading from the controller. In practice, cable length, pull-up resistance, bus capacitance, and signal rise time determine whether the target Fast-mode timing is achievable; those details are not quantified in the supplied excerpts and must be verified from the manufacturer datasheet.
پیشنهادی
Mixed-Logic-Level I2C Interfaces
The P82B96PWRG4 can connect I2C buses operating at different logic levels because Texas Instruments explicitly identifies voltage-level translation between buses as a supported function. Its 2 V to 15 V supply range allows each buffered domain to be evaluated against common low-voltage systems and higher-voltage legacy interfaces. The two bidirectional channels support both clock and data paths, preserving the open-drain communication model when suitable pull-ups are installed. Design effort should focus on confirming that each side's high-level threshold, pull-up voltage, and timing margin meet the device requirements. Because the verified excerpts omit complete threshold and timing tables, those parameters should be taken from the official P82B96 documentation rather than inferred from the operating-voltage range alone.
پیشنهادی
Multipoint I2C Branching
The P82B96PWRG4 supports multipoint arrangements because the Texas Instruments datasheet guidance states that Tx/Rx and Ty/Ry I/O pins can be interconnected with other P82B96 devices in star or multipoint configurations. This makes the device useful when several remote slave groups must share a controller-side bus while remaining connected through buffered nodes. The 400 kHz operating class and two-channel bidirectional architecture provide a practical basis for partitioning a larger I2C network. Pull-up placement is critical in a multipoint network because excessive parallel pull-up resistance can weaken the bus, while each isolated branch still needs appropriate biasing. Engineers should validate the exact node arrangement, capacitance budget, and timing margin using the manufacturer's example diagrams and complete electrical specifications.
پیشنهادی
Line-Card Peripheral Isolation
The P82B96PWRG4 is applicable to line-card peripheral isolation because manufacturer guidance specifically describes P82B96 devices sharing common Tx/Rx and Ty/Ry nodes while their Sx/Sy sides connect to line-card slave devices. That arrangement separates the card-facing loads from the main bus and supports multiple buffered branches without requiring a new logic level on every device. With a 2 V to 15 V supply range and 400 kHz operation, the P82B96 can serve as a compact interface-conditioning element in communication equipment. In a line-card design, the system should verify cable length, connector parasitics, pull-up topology, and fault behavior before production. The 8-pin TSSOP package also limits board area, but pin mapping and exposed routing requirements must be taken directly from the official package drawing.
پیشنهادی
Embedded Control Bus Conditioning
The P82B96PWRG4 can condition an I2C bus in embedded-control equipment where multiple sensors, EEPROMs, or interface devices create load and voltage-domain differences. Its two bidirectional channels provide dedicated buffering for clock and data, and its 400 kHz operating limit covers standard Fast-mode communication. Placing the device between the controller and a peripheral group can improve topology control and make pull-up selection more manageable on each side. Because this is an interface IC rather than a regulator, supply decoupling and logic thresholds still require careful review. The verified data does not state propagation delay, channel-to-channel skew, or maximum capacitance, so high-speed margin calculations and worst-case timing checks must use the complete manufacturer datasheet.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای P82B96PWRG4 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | P82B96PWR | P82B96PW | P82B96PWG4 |
|---|---|---|---|---|
| Package | TSSOP-8 | TSSOP-8 - same | TSSOP-8 - same | TSSOP-8 - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | 2-bit bidirectional I2C/SMBus buffer and cable extender | 2-bit bidirectional I2C/SMBus buffer and cable extender | 2-bit bidirectional I2C/SMBus buffer and cable extender | 2-bit bidirectional I2C/SMBus buffer and cable extender |
| Operating Supply Range | 2 V to 15 V | 2 V to 15 V | 2 V to 15 V | 2 V to 15 V |
| Bus Frequency | 400 kHz | 400 kHz | 400 kHz | 400 kHz |
| Bidirectional Channels | 2 channels | 2 channels | 2 channels | 2 channels |
| Bus Compatibility | I2C and SMBus | I2C and SMBus | I2C and SMBus | I2C and SMBus |
| Voltage-Level Translation | Supported between different logic levels | Supported between different logic levels | Supported between different logic levels | Supported between different logic levels |
تفاوت‌های کلیدی
- Broad operating supply range (در مقابلP82B96PWR)
- Two-channel bidirectional buffering (در مقابلP82B96PW)
- TSSOP-8 footprint continuity (در مقابلP82B96PWG4)
یادداشت‌های طراحی
Treat the P82B96PWRG4 supply as an interface-domain supply rather than a general power-conversion output. The verified operating range is 2 V to 15 V, but the supplied excerpts do not provide quiescent current, absolute maximum ratings, or decoupling recommendations. Confirm the exact supply tolerances and pin connections in the manufacturer datasheet, provide local high-frequency bypass capacitance using the manufacturer's guidance, and ensure the selected supply remains stable during bus switching.
Calculate pull-up resistance separately for each buffered side using that side's voltage, total bus capacitance, and required rise time. Do not reuse the main-bus pull-up value automatically because voltage-level translation can require different pull-up networks. The verified material does not provide maximum capacitance or propagation-delay values, so validate the worst-case bus timing from the official datasheet and include tolerance, connector parasitics, and cable effects in the margin calculation.
Place the P82B96 close to the physical boundary between the main bus and the branch being isolated. Keep the Sx/Sy and Tx/Rx/Ty/Ry routes short, maintain a continuous ground reference, and avoid routing sensitive buffered nodes beneath unrelated switching circuitry. Because the verified excerpts do not provide a complete numbered pin table or layout drawing, the PCB must follow the official TI package drawing and application guidance; generic TSSOP-8 assumptions may be unsafe.
Avoid treating the P82B96 as a galvanic isolator, directional transceiver, or power converter. It buffers bidirectional I2C/SMBus signals and supports different logic levels, but its operating range alone does not guarantee every voltage pairing. Confirm pull-up values, logic thresholds, bus topology, and timing for each connected node. Also verify that the selected P82B96 order suffix matches the required TSSOP-8 package and assembly format before releasing the BOM.
اطلاعات انطباق
The supplied verified excerpts do not explicitly state the requested compliance status. No compliance claim should be made without the current manufacturer product-page declarations or material declaration.
