The Highway09a is a low-power, high-speed CMOS dual differential line driver/receiver designed for automotive and industrial CAN bus applications (ISO 11898-2 compatible).
Q1: Is the Highway09a IC obsolete? A: Without the official datasheet, it's impossible to know. Search the PDF for a "Status" field (e.g., Production, End of Life, NRND).
Q2: Can I replace Highway09a with an MCP2551 or SN65HVD230? A: Only if the Highway09a IC Datasheet PDF shows identical pinout and electrical specs. Always compare datasheets side-by-side. Highway09a Ic Datasheet Pdf
Q3: Why do many Chinese suppliers list "Highway09a" without a datasheet? A: Some components are remarked or are custom ASICs for a specific product line (e.g., a dashboard cluster). In such cases, the datasheet is only available under NDA.
Q4: How do I request a datasheet directly? A: Go to the PCB or product that contains the IC. Look for FCC ID or manufacturer logos. Contact their technical support with the part number and photos of the IC top marking. The Highway09a is a low-power, high-speed CMOS dual
The Highway09a utilizes a 48-pin BGA (Ball Grid Array) package:
Contact Supplier or Manufacturer: If you bought this as part of a kit or module, ask the seller for the original part number or schematic. Signal Pins :
Once you have the PDF in hand, focus on these critical specifications:
| Pin | Name | Description | |-----|--------|------------------------| | 1 | TXD | Transmit data input | | 2 | GND | Ground | | 3 | VCC | Supply voltage (5V) | | 4 | RXD | Receive data output | | 5 | CANL | Low-level CAN bus line | | 6 | CANH | High-level CAN bus line| | 7 | S/STB | Standby control | | 8 | NC | No connect |
To confirm the exact function, you must consult the original Highway09a IC Datasheet PDF, as clone or generic components often have varied pinouts.