TJA1053 데이터 시트보기 (PDF) - Philips Electronics

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TJA1053

Fault-tolerant CAN transceiver

Philips Electronics 

Philips Semiconductors

Fault-tolerant CAN transceiver

Preliminary specification

TJA1053

FEATURES

Optimized for in-car low-speed communication

• Baud rate up to 125 kbaud

• Up to 32 nodes can be connected

• Supports unshielded bus wires

• Low RFI due to built-in slope control function

• Fully integrated receiver filters

• Permanent dominant monitoring of TXD.

Bus failure management

• Supports one-wire transmission modes with ground

offset voltages up to 1.5 V

• Automatic switching to single-wire mode in the event of

bus failure

• Automatic reset to differential mode if bus failure is

removed.

Protection

• Short-circuit proof to battery and ground in 12 V

powered systems

• Thermally protected

• Bus lines protected against transients in an automotive

environment

• An unpowered node does not disturb the bus lines.

Support for low-power modes

• Low current sleep/standby mode with wake-up via the

bus lines

• Power-on reset flag on the output.

GENERAL DESCRIPTION

The TJA1053 is the interface between the CAN protocol

controller and the physical bus. It is primarily intended for

low-speed applications, up to 125 kbaud, in passenger

cars. The device provides differential transmit capability

but will switch in error conditions to a single-wire

transmitter and/or receiver. The TJA1053 is derived from

the PCA82C252.

1. It is better equipped for networks with more than

15 nodes

2. A timer has been integrated at the TXD input to

prevent a permanent dominant state

3. Reduced supply current in VCC standby mode

4. CANH output driver is disabled in the event that CANH

is short-circuited to battery failure mode.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

VCC

VBAT

supply voltage

battery voltage

no time limit

operating

load dump

Isleep

sleep mode current

VCANH,VCANL CANH, CANL input voltage

VCC = 0 V; VBAT = 12 V

VCC = 0 to 5.5 V; VBAT ≥ 0 V;

no time limit

VCC = 0 to 5.5 V; VBAT ≥ 0 V;

t < 0.1 ms; load dump

VDROP(H)

VDROP(L)

tPD

tf

tr

Tamb

CANH transmitter drop voltage ICANH = 40 mA

CANL transmitter drop voltage ICANL = 40 mA

propagation delay

TXD to RXD

bus output fall time

90% to 10%

bus output rise time

10% to 90%

operating ambient temperature

MIN.

4.75

−0.3

6.0

−

−

−10

TYP.

−

−

−

−

65

−

MIN.

5.25

+27

27

40

−

+27

UNIT

V

V

V

V

µA

V

−40 −

+40 V

−

−

−

−

−

1

−

0.5

−

0.5

−40 −

1.4

V

1.4

V

−

µs

−

µs

−

µs

+125 °C

1997 Oct 15

2

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