TJA1042 Просмотр технического описания (PDF) - Philips Electronics

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TJA1042

High-speed CAN transceiver with Standby mode

Philips Electronics 

NXP Semiconductors

TJA1042

High-speed CAN transceiver with Standby mode

VSPLIT = 0.5 VCC

in normal mode;

otherwise floating

VCC

TJA1042T

CANH

R

60 Ω

SPLIT

R

60 Ω

CANL

GND

015aaa020

Fig 3. Stabilization circuitry and application for version with SPLIT pin

7.3.2

VIO supply pin

Pin VIO on the TTJA1042T/3 and TJA1042TK/3 should be connected to the

microcontroller supply voltage (see Figure 7). This will adjust the signal levels of

pins TXD, RXD and STB to the I/O levels of the microcontroller. Pin VIO also provides the

internal supply voltage for the low-power differential receiver of the transceiver. For

applications running in low-power mode, this allows the bus lines to be monitored for

activity even if there is no supply voltage on pin VCC.

For versions of the TJA1042 without a VIO pin, the VIO input is internally connected to VCC.

This sets the signal levels of pins TXD, RXD and STB to levels compatible with 5 V

microcontrollers.

8. Limiting values

Table 5. Limiting values

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

Symbol Parameter

Conditions

Min Max Unit

Vx

voltage on pin x

no time limit; DC value

on pins CANH, CANL and SPLIT

58 +58 V

on any other pin

0.3 +7

V

Vtrt

transient voltage

on pins CANH and CANL

[1] 150 +100 V

TJA1042

Product data sheet

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

Rev. 7 — 8 May 2012

© NXP B.V. 2012. All rights reserved.

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