PCA82C250T/YMX,118 datasheet, PDF

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PCA82C250T/YMX,118: DescriptionPCA82C250T - CAN controller interface; CategoryWireless rf/communication Telecom circuit; File Size226KB，18 Pages; ManufacturerNXP; Websitehttps://www.nxp.com; Environmental Compliance

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PCA82C250T/YMX,118 Overview

PCA82C250T - CAN controller interface

PCA82C250T/YMX,118 Parametric

Parameter Name	Attribute value
Brand Name	NXP
Is it Rohs certified?	conform to
Maker	NXP
package instruction	SOP, SOP8,.25
Reach Compliance Code	unknown
JESD-30 code	R-PDSO-G8
Number of terminals	8
Transceiver quantity	1
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
power supply	5 V
Certification status	Not Qualified
Maximum slew rate	70 mA
Nominal supply voltage	5 V
surface mount	YES
technology	BICMOS
Telecom integrated circuit types	CAN TRANSCEIVER
Temperature level	AUTOMOTIVE
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL

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PCA82C250

CAN controller interface

Rev. 06 — 25 August 2011

Product data sheet

1. General description

The PCA82C250 is the interface between a CAN protocol controller and the physical bus.

The device provides differential transmit capability to the bus and differential receive

capability to the CAN controller.

2. Features and benefits



Fully compatible with the

“ISO 11898”

standard

High speed (up to 1 MBd)

Bus lines protected against transients in an automotive environment

Slope control to reduce Radio Frequency Interference (RFI)

Differential receiver with wide common-mode range for high immunity against

ElectroMagnetic Interference (EMI)

Thermally protected

Short-circuit proof to battery and ground

Low-current Standby mode

An unpowered node does not disturb the bus lines

At least 110 nodes can be connected

3. Applications



High-speed automotive applications (up to 1 MBd).

4. Quick reference data

Table 1.

Symbol

1/t

bit

CAN

diff

amb

Quick reference data

Parameter

supply voltage

supply current

maximum transmission speed

CANH, CANL input/output voltage

differential bus voltage

propagation delay

ambient temperature

High-speed mode

Standby mode

non-return-to-zero

Conditions

Min

4.5

8

1.5

40

Max

5.5

170

+18

3.0

+125

Unit

A

MBd

C

NXP Semiconductors

PCA82C250

CAN controller interface

7.2 Pin description

Table 3.

Symbol

TXD

GND

RXD

ref

CANL

CANH

Pin description

Description

transmit data input

ground

supply voltage

receive data output

reference voltage output

LOW-level CAN voltage input/output

HIGH-level CAN voltage input/output

slope resistor input

8. Functional description

The PCA82C250 is the interface between a CAN protocol controller and the physical bus.

It is primarily intended for high-speed automotive applications (up to 1 MBd). The device

provides differential transmit capability to the bus and differential receive capability to the

CAN controller. It is fully compatible with the

“ISO 11898”

standard.

A current limiting circuit protects the transmitter output stage against short-circuit to

positive and negative battery voltage. Although the power dissipation is increased during

this fault condition, this feature will prevent destruction of the transmitter output stage.

If the junction temperature exceeds a value of approximately 160

C,

the limiting current

of both transmitter outputs is decreased. Because the transmitter is responsible for the

major part of the power dissipation, this will result in reduced power dissipation and hence

a lower chip temperature. All other parts of the PCA82C250 will remain in operation. The

thermal protection is needed, in particular, when a bus line is short-circuited.

The CANH and CANL lines are also protected against electrical transients which may

occur in an automotive environment.

Pin 8 (Rs) allows three different modes of operation to be selected: High-speed, Slope

control and Standby.

For high-speed operation, the transmitter output transistors are simply switched on and off

as fast as possible. In this mode, no measures are taken to limit the rise and fall slope.

Use of a shielded cable is recommended to avoid RFI problems. The High-speed mode is

selected by connecting pin 8 to ground.

For lower speeds or shorter bus length, an unshielded twisted pair or a parallel pair of

wires can be used for the bus. To reduce RFI, the rise and fall slope should be limited. The

rise and fall slope can be programmed with a resistor connected from pin 8 to ground. The

slope is proportional to the current output at pin 8.

If a HIGH level is applied to pin 8, the circuit enters a low-current Standby mode. In this

mode, the transmitter is switched off and the receiver is switched to a low current. If

dominant bits are detected (differential bus voltage >0.9 V), RXD will be switched to a

PCA89C250

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 06 — 25 August 2011

3 of 18

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