SN55HVD251 - 工业 CAN 收发器

SN55HVD251是TI德州仪器公司的一款无产品，SN55HVD251是工业 CAN 收发器，本站介绍了SN55HVD251的封装应用图解、特点和优点、功能等，并给出了与SN55HVD251相关的TI元器件型号供参考。

SN55HVD251 - 工业 CAN 收发器 - 无 - CAN收发器 - 德州仪器

产品特性

Drop-In Improved Replacement for the PCA82C250 and PCA82C251
Bus-Fault Protection of ±36 V
Meets or Exceeds ISO 11898
Signaling Rates(1) up to 1 Mbps
High Input Impedance Allows up to 120 Nodes on a Bus
Bus Pin ESD Protection Exceeds 14 kV HBM
Unpowered Node Does Not Disturb the Bus
Low-Current Standby Mode: 200-µA Typical
Thermal Shutdown Protection
Glitch-Free Power-Up and Power-Down CAN Bus Protection for Hot-Plugging
DeviceNet Vendor ID #806 (1)

(1) The signaling rate of a line is the number of voltage transitions that are made per second expressed in bps (bits per second).

产品应用

CAN Data Buses
Industrial Automation
SAE J1939 Standard Data Bus Interface
NMEA 2000 Standard Data Bus Interface

Block Diagram

产品说明

The HVD251 is intended for use in applications employing the Controller Area Network (CAN) serial communication physical layer in accordance with the ISO 11898 Standard. The HVD251 provides differential transmit capability to the bus and differential receive capability to a CAN controller at speeds up to 1 megabits per second (Mbps).

Designed for operation in harsh environments, the device features cross-wire, overvoltage and loss of ground protection to ±36 V. Also featured are overtemperature protection as well as –7-V to 12-V common-mode range, and tolerance to transients of ±200 V. The transceiver interfaces the single-ended CAN controller with the differential CAN bus found in industrial, building automation, and automotive applications.

Rs, pin 8, selects one of three different modes of operation: high-speed, slope control, or low-power mode. The high-speed mode of operation is selected by connecting pin 8 to ground, allowing the transmitter output transistors to switch as fast as possible with no limitation on the rise and fall slope. The rise and fall slope can be adjusted by connecting a resistor to ground at pin 8; the slope is proportional to the pin's output current. Slope control with an external resistor value of 10 kΩ gives about 15-V / µs slew rate; 100 kΩ gives about 2-V/µs slew rate.

If a high logic level is applied to the Rs pin 8, the device enters a low-current standby mode where the driver is switched off and the receiver remains active. The local protocol controller returns the device to the normal mode when it transmits to the bus.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
SN55HVD251	WSON (8)	4.00 mm × 4.00 mm
SN65HVD251	SOIC (8)	4.90 mm × 3.91 mm
SN65HVD251	PDIP (8)	9.81 mm × 6.35 mm

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