# SN65HVD252/253 DeviceNet CAN Transceivers

## Features

️· DeviceNet Compliant (supports 64 nodes)
️· Loopback function (HVD253)
️· Bus-fault protection (-36V to 40V)
️· Silent mode (driver disable, receiver active)
️· 3.3V compatible receiver output

## Applications

️· DeviceNet Networks
️· Industrial Automation
️· HVAC Networks
️· Security Systems
️· Telecom Base Station Status Control
️· CANopen, SDS, CAN Kingdom Data Buses

## Description

The SN65HVD252 and SN65HVD253 are CAN transceivers that meet DeviceNet specifications and ISO 11898-2:2003 standards. They support signaling rates up to 1 Mbps and feature robust protection for harsh industrial environments.

## Pinout

Pin #	SN65HVD252	SN65HVD253
1	VCC	VCC
2	RXD	RXD
3	TXD	TXD
4	GND	GND
5	VREF	AB
6	CANL	CANL
7	CANH	CANH
8	S	S

## Electrical Characteristics (Key Parameters)

️· Supply Voltage (VCC): 4.75V to 5.25V
️· Data Rate: Up to 1 Mbps
️· Input Resistance: 15kΩ - 40kΩ (CANH/CANL)
️· Bus Fault Protection: -36V to 40V
️· Receiver Output (VOH): 2.4V-3.7V
️· Receiver Output (VOL): 0.1V-0.2V

## Loopback Feature (HVD253)

The HVD253 includes a loopback feature which enables synchronization of the local node controller's baud rate with the CAN bus. In loopback mode, the driver outputs are high-impedance, while the receiver remains active.

## Silent Mode

Setting the 'S' pin high disables the driver and activates a listen-only mode, useful for preventing disruption of the network in case of local faults.

## VREF Output (SN65HVD252)

Provides a stable VCC/2 voltage reference for split termination schemes.