Overview
The L9638D is an Integrated Circuit (IC) from STMicroelectronics, categorized under Interface components, specifically Drivers, Receivers, and Transceivers. This IC is a half-duplex transceiver designed for Local Interconnect Network (LIN) bus applications, featuring one transmitter and one receiver. It is suitable for systems requiring bidirectional communication and is particularly used in automotive and industrial control systems. Although the L9638D is now obsolete and not recommended for new designs, it remains relevant for existing systems and maintenance purposes.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Max Supply Voltage | 26 V | Supply Voltage - Min | 6 V |
| Minimum Operating Temperature (°C) | -40 | Maximum Operating Temperature (°C) | +150 |
| Mounting Style | SMD/SMT | Moisture Sensitive | Yes |
| Number of Receivers | 1 | Series | L9638 |
| Factory Pack Quantity | 100 | ||
| Operating Junction Temperature (°C) | -40 to 150 | Thermal Shutdown Temperature (°C) | 170 ± 20 |
| Storage Temperature (°C) | -55 to 150 |
Key Features
- Single-wire transceiver for LIN-protocol
- Transmission rate up to 20 kbaud
- Operating power supply voltage range 6V ≤ Vs ≤ 26V (40V for transients)
- Low quiescent current in sleep mode (typ. 10µA)
- Wake-up through LIN-bus, Enable input (from µC CMOS compatible), or Wake-up input (edge driven)
- Wide input and output range -24V ≤ VLIN ≤ Vs
- Integrated pull/down/up resistors for LIN, TxD, RxD, EN, INH
- Inhibit output with low resistance (<40Ω) versus Vs and short circuit protection
- CMOS compatible TxD, RxD Interface
- EMI robustness optimized
- Thermal shutdown and LIN short circuit protection
Applications
- Automotive systems requiring LIN bus communication, such as onboard diagnostics (OBD) and vehicle communication
- Industrial control systems needing bidirectional data transfer
- Engine management, gearbox control, and anti-lock braking systems in automotive applications
- Motor control in industrial applications, such as controlling the speed and direction of electric motors
Q & A
- Q: What is the L9638D and its primary function?
A: The L9638D is a LIN bus transceiver from STMicroelectronics, designed for bidirectional communication in Local Interconnect Network (LIN) bus applications.
- Q: What are the key features of the L9638D?
A: Key features include single-wire transceiver for LIN-protocol, transmission rate up to 20 kbaud, low quiescent current in sleep mode, and integrated pull/down/up resistors among others.
- Q: What is the operating voltage range of the L9638D?
A: The operating power supply voltage range is 6V ≤ Vs ≤ 26V, with transient voltage up to 40V.
- Q: How does the L9638D wake up from sleep mode?
A: The L9638D can wake up through the LIN-bus, Enable input (from µC CMOS compatible), or Wake-up input (edge driven).
- Q: What are the typical applications of the L9638D?
A: It is commonly used in automotive systems for LIN bus communication and in industrial control systems for bidirectional data transfer.
- Q: Is the L9638D still recommended for new designs?
A: No, the L9638D is now obsolete and not recommended for new designs.
- Q: What kind of protection does the L9638D offer?
A: It offers thermal shutdown, LIN short circuit protection, and EMI robustness optimization.
- Q: How can I obtain detailed information about the L9638D, such as datasheets and pin diagrams?
A: You can find comprehensive details about the L9638D on the STMicroelectronics website or through authorized distributors like Ovaga, where you can access datasheets and other technical documents.
- Q: What is the warranty period for the L9638D when purchased from Ovaga?
A: Ovaga offers a 1-year warranty on the L9638D, covering any defects in materials and workmanship under normal use.
- Q: How does Ovaga ensure the authenticity of the L9638D from STMicroelectronics?
A: Ovaga rigorously tests and verifies the credentials of original STMicroelectronics manufacturers and authorized agents to ensure authenticity.
