PCA89C250

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© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 06 — 25 August 2011

4 of 18

NXP Semiconductors

PCA82C250

CAN controller interface

LOW level. The microcontroller should react to this condition by switching the transceiver

back to normal operation (via pin 8). Because the receiver is slow in Standby mode, the

first message will be lost.

[1]

X = don’t care.

9.

Limiting values

[1]

In accordance with “IEC 60747-1”. An alternative definition of virtual junction temperature is:

Tvj =Tamb +Pd  Rth(vj-a), where Rth(j-a) is a fixed value to be used for the calculation of Tvj. The rating for Tvj

limits the allowable combinations of power dissipation (Pd) and ambient temperature (Tamb).

[2]

Classification A: human body model; C = 100 pF; R = 1500

; V = 2000 V.

[3]

Classification B: machine model; C = 200 pF; R = 25

; V = 200 V.

Table 4.

Truth table of the CAN transceiver

Supply

TXD

CANH

CANL

Bus state

RXD

4.5 V to 5.5 V

0

HIGH

LOW

dominant

0

4.5 V to 5.5 V

1 (or floating) floating

floating

recessive

1

< 2 V (not powered)

X[1]

floating

floating

recessive

X[1]

2V<VCC < 4.5 V

>0.75VCC

floating

floating

recessive

X[1]

2V<VCC <4.5 V

X[1]

floating if

VRs >0.75VCC

floating if

VRs > 0.75VCC

recessive

X[1]

Table 5.

Pin Rs summary

Condition forced at pin Rs

Mode

Resulting voltage or current at pin Rs

VRs >0.75VCC

Standby

IRs < 10 A

10 A< I

Rs < 200 A

Slope control

0.4VCC <VRs <0.6VCC

VRs <0.3VCC

High-speed

IRs < 500 A

Table 6.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are referenced

to pin 2; positive input current.

Symbol Parameter

Conditions

Min

Max

Unit

VCC

supply voltage

0.3

+9.0

V

Vn

DC voltage at pins 1, 4, 5 and 8

0.3

VCC +0.3 V

V6, 7

DC voltage at pins 6 and 7

0 V < VCC <5.5 V;

no time limit

8.0

+18.0

V

Vtrt

transient voltage at pins 6 and 7

see Figure 8

150

+100

V

Tstg

storage temperature

55

+150

C

Tamb

ambient temperature

40

+125

C

Tvj

virtual junction temperature

[1]

40

+150

C

Vesd

electrostatic discharge voltage

[2]

2000

+2000

V

[3]

200

+200

V