Overview
The SN65LBC179QDRG4 is a differential line driver and receiver pair designed by Texas Instruments for high-speed multipoint data transmission over long cables. This integrated circuit is part of the SN65LBC179 family and is characterized for operation over an extended industrial or automotive temperature range of −40°C to 125°C. It combines the low power consumption of CMOS with the precision and robustness of bipolar transistors, utilizing TI’s proprietary LinBiCMOS™ technology.
The device is fully compliant with industry standards such as ANSI RS-485 and ISO 8482:1987(E), making it suitable for a wide range of applications requiring reliable and high-speed data transmission.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Supply Current (ICC) | - | 5 | 7 | mA |
| Differential Output Voltage (VOD) | 1.1 | 2.2 | 5 | V |
| Common-Mode Output Voltage (VOC) | 1 | 2.5 | 3 | V |
| Differential-Output Delay Time (td(OD)) | 7 | - | 18 | ns |
| Propagation Delay Time (tPHL, tPLH) | 15 | - | 30 | ns |
| Operating Temperature Range | -40 | - | 125 | °C |
| Junction Temperature (TJ) | - | - | 172 | °C |
Key Features
- Designed for high-speed multipoint data transmission over long cables.
- Operates with pulse widths as low as 30 ns.
- Low supply current: 5 mA max for SN65LBC179 and SN75LBC179, 7 mA max for SN65LBC179Q.
- Meets or exceeds the standard requirements of ANSI RS-485 and ISO 8482:1987(E).
- Common-mode voltage range of −7 V to 12 V.
- Positive-and negative-output current limiting.
- Driver thermal shutdown protection at approximately 172°C junction temperature.
- Pin compatible with the SN75179B.
- Available in 8-pin dual-in-line and small-outline packages.
Applications
- Point-to-point or multipoint data bus applications.
- Industrial automation and control systems.
- Automotive systems requiring high-speed data transmission.
- Telecommunications and networking equipment.
- Any application requiring reliable and high-speed differential data transmission over long cables.
Q & A
- What is the operating temperature range of the SN65LBC179QDRG4?
The SN65LBC179QDRG4 operates over an extended industrial or automotive temperature range of −40°C to 125°C.
- What are the key industry standards that the SN65LBC179QDRG4 complies with?
The device meets or exceeds the standard requirements of ANSI RS-485 and ISO 8482:1987(E).
- What is the typical supply current for the SN65LBC179QDRG4?
The typical supply current is 5 mA for SN65LBC179 and SN75LBC179, and 7 mA for SN65LBC179Q.
- What is the common-mode voltage range of the SN65LBC179QDRG4?
The common-mode voltage range is −7 V to 12 V.
- Does the SN65LBC179QDRG4 have thermal protection?
- What are the available package types for the SN65LBC179QDRG4?
The device is available in 8-pin dual-in-line (PDIP) and small-outline (SOIC) packages.
- What is the minimum pulse width the SN65LBC179QDRG4 can operate with?
The device can operate with pulse widths as low as 30 ns.
- Is the SN65LBC179QDRG4 pin compatible with other devices?
- What are some typical applications for the SN65LBC179QDRG4?
Typical applications include point-to-point or multipoint data bus systems, industrial automation, automotive systems, and telecommunications equipment.
- What is the differential-output delay time for the SN65LBC179QDRG4?
The differential-output delay time is between 7 ns and 18 ns.
