PI7C8958AFHE - PCI to Octal UART Bridge | Diodes Inc.
MPN： PI7C8958AFHE ✓ 啟用中PI7C8958AFHE 概覽
A PCI bridge is an interface controller that translates transactions between parallel expansion-bus protocols and peripheral-facing interfaces. The PI7C8958AFHE sits in the interface IC hierarchy as a PCI interface bridge, with the UART interface providing a practical expansion path for systems that need multiple serial ports. Its eight-channel arrangement can reduce the number of separate UART controller components required in multi-port equipment.
The principal verified characteristics are PCI protocol support, a PCI-to-UART bridge function, eight UART channels, 3.3 V and 5 V supply operation, 10 mA supply current, and a 144-LQFP surface-mount package. The 144-pin package exposes substantially more interface and control signals than a conventional small-outline UART transceiver, making careful PCB layout and pin-level verification essential. Its 20 mm by 20 mm footprint is materially larger than common SOIC or MSOP interface packages.
Technically, the PI7C8958AFHE is intended for embedded systems, industrial equipment, multiport servers, test systems, and other PCI-based products that require several UART channels. The octal architecture consolidates eight serial interfaces behind one PCI bridge, but designers must confirm PCI host compatibility, connector requirements, signal termination, operating-system support, and the complete datasheet pin assignment before production release.
A key design consideration is that the listed 10 mA supply current should not be treated as a complete system power budget because regulator efficiency, I/O loading, and other board loads are not included. The 3.3 V and 5 V supply entries should also be validated against the device's detailed electrical tables before selecting rail voltage, decoupling, and interface-level components.
Typical uses include industrial controller cards, communications appliances, embedded test equipment, and legacy-port expansion systems. Because no complete pin table, electrical limits, clocking details, UART configuration, PCI transaction behavior, or pricing schedule was present in the verified results, each missing item is identified explicitly rather than inferred. This page combines verified product identity, package information, sourcing links, and engineering-selection guidance without inventing unsupported electrical details.
直接替換替代品，適用於 PI7C8958AFHE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品PI7C8958AFHE 最大額定值與電氣特性
| Manufacturer | Diodes Incorporated |
| Product Description | PCI octal UART bridge |
| Product Type | PCI-to-UART interface bridge |
| Bus Protocol | PCI |
| Bridge Function | PCI to UART |
| UART Interface | UART |
| Number of UART Channels | 8 channels |
| 供應電壓 | 3.3 V, 5 V |
| 供應電流 | 10 mA |
| 工作溫度 | -40 °C to 85 °C |
| 封裝 | 144-LQFP (20 mm × 20 mm) |
| 安裝類型 | Surface Mount |
| Part Status | Active |
PI7C8958AFHE 144-lqfp (20 mm × 20 mm) 腳位配置指南
PI7C8958AFHE（144-lqfp (20 mm × 20 mm) 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： PI7C8958AFHE.
請參閱 資料表 以查看完整腳位配置。
典型應用
PI7C8958AFHE 適用於 6 應用s: Industrial PCI Multiport Controller, Telecommunications Equipment, Embedded Test and Measurement, Legacy Port Expansion, Communications Appliance, Server Management and Diagnostics.
Industrial PCI Multiport Controller
The PI7C8958AFHE fits an industrial PCI expansion card that requires eight serial channels from one controller device. Its verified 3.3 V and 5 V supply capability supports integration with mixed-voltage interface designs, while its -40 °C to 85 °C operating range suits industrial-temperature equipment. The bridge is installed on a PCI carrier and presents eight UART connections to sensors, meters, programmable instruments, or service equipment. The principal design benefit is consolidation: eight channels are integrated behind one PCI device rather than requiring eight separate controller packages and routing them to a common host bus. The 144-LQFP footprint is large at 20 mm by 20 mm, so board area and escape routing must be considered. Engineers must confirm the number and type of UART signals, electrical levels, flow control, baud-rate range, and PCI host-driver requirements in the complete manufacturer datasheet.
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Telecommunications Equipment
PI7C8958AFHE can be used in PCI-based telecommunications equipment that needs several low-speed serial channels for control, monitoring, or service interfaces. The eight-channel UART bridge reduces the number of host-bus controller resources, while its 3.3 V and 5 V operation permits integration with equipment that supports either listed supply level. The device can serve as the host-facing controller while external line drivers and receivers determine the physical communication standard. Because the verified data does not specify UART electrical signaling, designers should add the appropriate transceiver family for RS-232, RS-422, or RS-485. Isolation, surge protection, grounding, and cable-routing requirements depend on the installation. Validate firmware or driver behavior and confirm sustained throughput for every enabled channel before using the bridge in a production communication appliance.
推薦
Embedded Test and Measurement
The PI7C8958AFHE is applicable to modular test and measurement systems that require eight serial control ports for instruments, fixtures, or programmable power supplies. Its -40 °C to 85 °C listed operating range supports use across industrial and laboratory environments when the rest of the system meets applicable environmental requirements. The PCI interface allows the multichannel bridge to fit naturally into instrumentation based on a desktop or embedded PCI host. Designers should determine whether the UART channels support the required baud rates, parity modes, data widths, interrupts, and flow control because those details were not present in the verified snippets. External level translators or transceivers may be necessary when connecting to RS-232, RS-422, or RS-485 instruments. Isolation and ground-loop mitigation are particularly important for bench systems with long cable runs or unequal ground potentials.
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Legacy Port Expansion
PI7C8958AFHE provides a practical path for adding eight UART channels to an existing PCI-based platform that must retain legacy serial connectivity. This is especially relevant to industrial controllers, embedded appliances, and specialized equipment where existing peripherals use established UART protocols. Consolidating eight ports into one bridge can simplify host software and reduce PCI bus-device allocation compared with multiple controllers. However, preserving legacy behavior requires verification of register programming, interrupt behavior, electrical levels, and driver support rather than relying only on the “octal UART bridge” description. If the legacy equipment uses RS-232, RS-422, or RS-485, appropriate external interface devices and protection components are still required. The large 144-LQFP package also demands a deliberate connector placement strategy so external serial routes do not cross sensitive PCI or clock signals on the board.
推薦
Communications Appliance
The PI7C8958AFHE can support serial management ports in a PCI communications appliance, where service technicians or field equipment rely on multiple UART links for configuration, diagnostics, and out-of-band control. Eight channels offer more flexibility than a single-port controller while keeping the device count lower than eight discrete implementations. Its listed 10 mA supply current provides a basic device-level reference, but total board consumption must include transceiver and regulator losses. The verified 3.3 V and 5 V entries permit both supply options at the component level, while the engineer must confirm rail-specific limits and I/O tolerances. A robust appliance design should include startup control, connector protection, ground references, and isolation where the external interface may connect across large ground-potential differences. Final host compatibility requires validating the PCI interface and any operating-system driver or firmware assumptions.
推薦
Server Management and Diagnostics
PI7C8958AFHE is applicable to server or storage-system management cards that need several UART channels for baseboard management controllers, diagnostic devices, or peripheral service connections. The PCI form factor aligns with the host environment, and eight channels permit concurrent management and logging links while reducing the number of separate PCI devices. The verified operating range of -40 °C to 85 °C covers common industrial and server-room ambient conditions, although enclosure temperature rise must remain within the device rating. The listed 10 mA supply current is useful for preliminary power planning but does not include external transceivers or dynamic loading. Designers should review interrupt latency, channel multiplexing, driver support, and fault containment. Hot-plug behavior and power-state requirements cannot be determined from the supplied search results and must be confirmed before using the bridge in a hot-pluggable management architecture.
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推薦產品摘要
工程參考資料，適用於 PI7C8958AFHE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 144-LQFP (20 mm × 20 mm) |
| Brand | Diodes Incorporated |
| Product Type | PCI-to-UART interface bridge |
| Bus Protocol | PCI |
| UART Channels | 8 channels |
| Supply Voltage | 3.3 V, 5 V |
| Supply Current | 10 mA |
| Operating Temperature | -40 °C to 85 °C |
| Lifecycle Status | Active |
主要差異化特點
- Eight serial channels consolidated behind one PCI interface (對比A discrete eight-UART controller arrangement)
- Dual listed supply options (對比A single-supply-only UART controller design)
- Industrial temperature range (對比A commercial-temperature UART controller)
設計說明
Design the 144-LQFP footprint directly from the current manufacturer package drawing rather than from a generic 144-pin library. The verified data establishes a 20 mm by 20 mm package but does not provide lead pitch, body outline, pin-1 orientation, or exposed-pad details. Check every pad against the mechanical drawing and confirm whether a thermal pad is present. Place the device to minimize crossings between the PCI bus and the eight UART channel groups, while allowing connectors and external transceivers to be positioned according to cable-routing requirements.
The verified 10 mA supply-current listing should be treated only as a preliminary device-level value. Before schematic release, determine the operating conditions associated with that figure, identify separate core and I/O rail requirements, and verify permissible supply combinations from the manufacturer datasheet. Calculate regulator dissipation and startup margin for each rail rather than sharing assumptions between the listed 3.3 V and 5 V options. Add local high-frequency decoupling at the relevant supply pins according to the datasheet layout guidance, including any required bulk capacitance for stable startup.
Do not treat the eight UART channels as complete RS-232, RS-422, or RS-485 interfaces without external level-shifting and protection. The verified evidence identifies a PCI-to-UART bridge but does not specify the electrical signaling on its serial outputs. Select transceivers after confirming logic levels, voltage tolerance, direction control, isolation requirements, baud rate, and cable topology. Also verify the host-side software or firmware model: a device can match the package and channel count while still requiring different register, interrupt, or driver behavior.
合規資訊
The verified results identify the manufacturer, active status, electrical basics, operating temperature, and package, but do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.
