PI7C9X754FFEX - Quad UART Interface IC | Diodes Incorporated
N.º de pieza: PI7C9X754FFEX ✗ Fin de vidaPI7C9X754FFEX Descripción general
A UART interface IC is a semiconductor device that converts parallel digital data into serial signals and receives serial data in parallel form. It belongs to the interface IC hierarchy, which also includes RS485 controllers, IrDA transceivers, and other communication adapters. The PI7C9X754FFEX combines four UART functions in one package, reducing the number of separate serial-interface devices required in embedded equipment.
The main documented features include a quad-UART configuration, a 64-byte FIFO per channel according to the product listing, RS485 controller functionality, and IrDA 1.1 support. These features make the device relevant to industrial control, instrumentation, embedded communications, and multi-channel data-acquisition systems where several serial ports must operate within one design.
The 80-LQFP (12 x 12 mm) package provides a defined lead arrangement for compact but high-pin-count PCB designs. Because the device integrates four UART channels, board-level design requires careful review of each channel's data, control, interrupt, and supply connections. The manufacturer datasheet should be used to assign the complete pinout, power requirements, timing values, and electrical limits before PCB routing.
Typical uses include industrial controllers with multiple serial-device connections, test equipment communicating with several instruments, data-acquisition gateways, and embedded systems that bridge host processors to RS485 or IrDA peripherals. In each case, the integrated FIFO can help buffer serial traffic, while the quad-channel architecture reduces component count compared with four separate UART interface devices.
Designers should confirm signal levels, transceiver requirements, interrupt allocation, and package land pattern in the manufacturer datasheet. RS485 applications may require external line drivers or transceivers because the PI7C9X754FFEX is identified as an RS485 controller rather than a complete isolated RS485 transceiver. This page summarizes the available product information and provides engineering guidance for evaluating the device in a new design.
This product page consolidates the confirmed PI7C9X754FFEX features, package information, sourcing links, application guidance, and the key qualification checks engineers need when comparing multi-channel UART interface ICs.
Alternativas directas para PI7C9X754FFEX — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
No hay alternativas directas disponibles para este producto.
Solicitar alternativasPI7C9X754FFEX Valores máximos y características eléctricas
| Device Type | Quad UART interface IC |
| UART Channel Count | 4 channels |
| FIFO Capacity | 64 byte FIFO |
| RS485 Controller Support | Supported |
| IrDA Support | IrDA 1.1 |
| Encapsulado | 80-LQFP (12 x 12 mm) |
| Tipo de montaje | Surface mount |
| Interface Category | UART interface IC |
| Manufacturer | Diodes Incorporated |
Guía de configuración de pines de PI7C9X754FFEX 80-lqfp (12 x 12 mm)
Configuración de pines para PI7C9X754FFEX (encapsulado 80-lqfp (12 x 12 mm)). Este dispositivo de potencia presenta terminales de puerta, drenador y fuente. Para encapsulados no polarizados, consulte la hoja de datos del fabricante para conocer la orientación exacta del pin 1 y los detalles del footprint. Las aplicaciones habituales incluyen el diseño de fuentes de alimentación, el accionamiento de motores y la conmutación de cargas.
No hay datos detallados de patillaje disponibles para PI7C9X754FFEX.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
PI7C9X754FFEX es adecuado para 6 aplicacións: Industrial Multi-Port Control, Test and Measurement Instrumentation, Data-Acquisition Gateway, Embedded Serial Hubs, Communications Equipment, Point-to-Point Serial Expansion.
Industrial Multi-Port Control
PI7C9X754FFEX fits an industrial controller that must communicate with several local devices over separate UART channels. The four-channel architecture allows a single interface IC to serve multiple measurement, actuator, or service ports while preserving a consistent software model. Its listed RS485 controller capability is useful where the system includes compatible industrial serial links. The 64-byte FIFO can absorb short traffic bursts while the host processor handles control logic, although timing and interrupt behavior must be confirmed in the manufacturer datasheet.
Recomendado
Test and Measurement Instrumentation
The PI7C9X754FFEX is appropriate for test equipment that must connect a controller or host processor to multiple serial instruments. Four UART channels can reduce the number of communication controllers needed on the board and simplify the physical arrangement of a compact instrument. The listed FIFO provides a useful buffer for bursty test data, while IrDA 1.1 support can serve short-range infrared links where that interface is used. Engineers should confirm baud-rate limits, electrical levels, and interrupt timing before finalizing the instrument architecture.
Recomendado
Data-Acquisition Gateway
PI7C9X754FFEX can serve as the serial hub in a gateway that collects commands or measurements from several peripheral modules. The four UART channels allow independent serial links to coexist without requiring four discrete interface ICs, and the 64-byte FIFO can help decouple short data bursts from the gateway's main processor. A 12 x 12 mm 80-LQFP package keeps the integration reasonably compact for embedded gateway hardware. The design must account for the high pin count, signal conditioning, and any external transceivers required by the connected devices.
Recomendado
Embedded Serial Hubs
PI7C9X754FFEX is suitable for an embedded serial hub that connects a host processor to multiple modems, sensors, or service interfaces. Consolidating four UART channels into one IC can reduce repeated support components and simplify firmware organization by giving each peripheral a defined channel. The listed RS485 controller capability supports systems with compatible multi-drop serial networks, while IrDA 1.1 support adds a short-range optical communication option. Firmware and PCB design should use the manufacturer's register and interrupt descriptions to prevent FIFO overflow and channel contention.
Recomendado
Communications Equipment
PI7C9X754FFEX can support communications equipment that needs several management or service ports in a limited board area. Its quad-UART organization provides four serial channels, each with the device's documented FIFO capability, while the 80-LQFP footprint offers a conventional surface-mount assembly option for multilayer boards. In network-appliance or telecom-adjacent equipment, the RS485 controller function may be useful for industrial management links. System designers should verify supply voltage, timing, and I/O levels against the datasheet and determine whether galvanic isolation is required.
Recomendado
Point-to-Point Serial Expansion
PI7C9X754FFEX can be used where a board already requires a dense set of serial links and a single-channel UART would create excessive component duplication. The four channels provide a practical way to map related point-to-point links such as module control, status reporting, and peripheral programming. The package's 80 leads require careful signal assignment, but it offers a clear path to a consolidated interface section on a multilayer PCB. The FIFO and interrupt scheme should be evaluated with the expected baud rate and workload so that the host-side firmware can service each channel reliably.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PI7C9X754FFEX — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Notas de diseño
Assign the PI7C9X754FFEX pins by signal group and place the device where the 80-LQFP land pattern can be reached without excessive via congestion. Review the manufacturer pin table before assigning power, ground, UART, interrupt, and control signals. The 12 x 12 mm package has a high pin count, so a clear keep-clear area, adequate solder-mask definition, and a qualified footprint are important for reliable assembly.
Treat each UART channel as a separate interface when planning routing, especially if any connected cable or board interface can introduce noise or reflections. Keep serial traces away from switching nodes and high-current paths, and verify that the external transceiver or connector does not introduce signal-level or timing violations. The manufacturer datasheet should define the electrical conditions and the required external components for each supported interface mode.
Do not assume that the RS485 controller function replaces a complete RS485 line transceiver. Confirm whether the design requires a separate transceiver, protection network, biasing arrangement, and isolation. Likewise, validate the IrDA 1.1 implementation against the intended optical module and timing requirements. Using the manufacturer application guidance and register descriptions prevents incorrect peripheral connections and channel configuration.
Información de cumplimiento
No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements were identified for this exact MPN in the available product information.
