PI7C9X762BZHE - I2C/SPI to Dual UART Bridge | Diodes Incorporated
MPN: PI7C9X762BZHE ✓ ActivePI7C9X762BZHE Overview
An interface bridge is a semiconductor device that translates commands and data between incompatible communication protocols while presenting a defined electrical interface to the host system. In this case, the PI7C9X762 family belongs to the interface IC hierarchy and bridges I2C or SPI buses to dual UART ports. The manufacturer describes the controller as a high-performance bridge with data rates up to 33 Mbps and low operating and sleeping current.
The PI7C9X762BZHE includes support for up to eight additional programmable general-purpose I/O pins, expanding its usefulness in compact embedded products where connector count and board area are constrained. The device can operate from 1.8 V, 2.5 V, or 3.3 V supply rails, allowing integration into low-voltage portable and battery-operated equipment. Its dual-UART architecture can also reduce the number of separate protocol-conversion components required in a system.
Typical applications include industrial control modules, handheld test equipment, battery-powered instruments, communications equipment, and embedded systems that expose an I2C or SPI peripheral through conventional UART connections. The small 32-TQFN package supports compact layouts, but its exposed pad and high-speed serial interfaces require careful PCB planning. Power, ground, and signal-return paths should be arranged to minimize switching noise and data errors.
When selecting this controller, verify the electrical levels, protocol timing, UART baud-rate requirements, GPIO usage, and package pin assignment against the manufacturer datasheet. The exact PI7C9X762BZHE ordering code determines the lead-free package, temperature, and production configuration, so related family members should not be substituted without checking their suffix codes and pin definitions.
This product page consolidates the manufacturer function description, package information, interface characteristics, application guidance, and verified sourcing information into a technical reference for engineers evaluating the PI7C9X762BZHE.
Drop-in alternatives for PI7C9X762BZHE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesPI7C9X762BZHE Maximum Ratings & Electrical Characteristics
| Device Type | I2C/SPI to dual-channel UART bridge controller |
| Host Protocols | I2C-bus and SPI |
| UART Channels | 2 channels |
| Maximum Data Rate | 33 Mbps |
| Programmable GPIO | Up to 8 additional GPIO pins |
| Supply Voltage Options | 1.8 V, 2.5 V, 3.3 V |
| Package | 32-TQFN (5 mm x 5 mm) |
| Exposed Pad | Yes |
| Pin Count | 32 pins |
| Mounting Type | Surface mount |
PI7C9X762BZHE 32-tqfn (5 mm x 5 mm) Pin Configuration Guide
Pin configuration for PI7C9X762BZHE (32-tqfn (5 mm x 5 mm) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for PI7C9X762BZHE.
Refer to the datasheet for full pin configuration.
Typical Applications
PI7C9X762BZHE is suitable for 6 applications: Embedded Protocol Conversion, Industrial Control Module, Battery-Powered Portable Instrument, Serial Test and Measurement Equipment, Communications Gateway, Handheld Data Acquisition System.
Embedded Protocol Conversion
The PI7C9X762BZHE is appropriate for embedded systems that need a processor-side I2C or SPI connection to communicate with two conventional UART peripherals. The manufacturer describes a dual-channel UART bridge with data rates up to 33 Mbps, allowing a compact host platform to retain access to legacy serial devices without allocating a separate bridge IC for every port. Its 32-TQFN, 5 mm by 5 mm package also helps reduce board area in space-constrained equipment.
Recommended
Industrial Control Module
Industrial control modules can use the PI7C9X762BZHE to connect a controller operating with I2C or SPI to two UART-based downstream devices. The dual-UART arrangement reduces protocol-conversion component count, while the configurable GPIO capability provides additional control lines for sensors, interlocks, or status indicators. Low-voltage supply options of 1.8 V, 2.5 V, and 3.3 V support systems where logic levels and power budgets must be tightly controlled.
Recommended
Battery-Powered Portable Instrument
The PI7C9X762BZHE fits battery-powered portable instruments that need to present I2C or SPI sensors and internal modules through UART links. The manufacturer highlights low operating and sleeping current, which is important when equipment spends substantial time between active measurements. The 32-TQFN package supports compact construction, while the three identified supply options allow integration with low-energy embedded platforms.
Recommended
Serial Test and Measurement Equipment
The PI7C9X762BZHE can serve as the interface hub in portable test equipment where a control processor communicates over I2C or SPI while external instruments or modules require UART. Supporting two UART channels allows one bridge to manage multiple serial links, and the programmable GPIO pins can provide device resets, mode controls, or trigger signals. Placement and trace routing should preserve return paths for each high-speed serial interface.
Recommended
Communications Gateway
A communications gateway can use the PI7C9X762BZHE when its management processor uses I2C or SPI but downstream radio, modem, or service modules expect UART. The bridge's two UART outputs support multiple serial endpoints in one design, while the family description emphasizes data rates up to 33 Mbps for high-performance communication paths. Firmware must map the bridge's address mapping, GPIO behavior, and protocol timing to the host software.
Recommended
Handheld Data Acquisition System
The PI7C9X762BZHE can connect sensors and a host processor in a handheld data-acquisition system while providing UART access to local modules. Its low-voltage supply choices, low operating and sleeping current, and compact 32-TQFN package align well with portable instruments. The eight additional programmable GPIO capability can support sensor enables, status lamps, or control signals without requiring another dedicated expander when the interface timing permits.
Recommended
Recommended Products Summary
Engineering reference data for PI7C9X762BZHE — comparison, design guidance, and compliance information.
Selection Guide
Design Notes
Place the PI7C9X762BZHE close to the host processor and the devices it connects. Keep I2C, SPI, and UART traces short, provide a continuous ground reference, and route high-speed signals away from switching nodes. The 32-TQFN package includes an exposed pad, so follow the manufacturer land-pattern and thermal-via guidance when defining the PCB footprint.
Decouple the supply pins with the capacitance and placement specified in the manufacturer application circuit. Confirm that the selected 1.8 V, 2.5 V, or 3.3 V rail matches both the bridge and attached peripherals, and check I/O voltage compatibility before enabling communication. This matters particularly in mixed-voltage portable systems where interface levels may differ from the core supply.
Use a low-impedance ground plane and avoid splitting return paths beneath the I2C, SPI, or UART nets. For longer or faster routes, review rise time, loading, crosstalk, and termination requirements in the datasheet. Firmware should also verify baud-rate tolerance, address mapping, and GPIO states before exposing the bridged ports to production traffic.
Compliance Information
The ordering code contains an RoHS-style lead-free suffix, but explicit compliance declarations were not identified. AEC-Q100 qualification is marked not applicable because this product is not identified as an automotive-qualified device.
