TJA1028T/3V3/20 NXP Semiconductors, TJA1028T/3V3/20 Datasheet - Page 7

• Manufacturer Part Number: TJA1028T/3V3/20
• Manufacturer: NXP Semiconductors

Specifications of TJA1028T/3V3/20

• Number Of Transmitters: 1
• Power Supply Requirement: Single
• Package Type: SO
• Mounting: Surface Mount
• Pin Count: 8
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
TJA1028
Product data sheet
7.2.1 Battery (pin V
7.2.2 Voltage regulator (pin V
7.2 Power supplies
7.3
To avoid complicated timing in the application, EN and TXD can be pulled LOW at the
same time without having any effect on the LIN bus. In order to ensure that the remote
wake-up time (t
pulled LOW at least t
The user must ensure the appropriate level is present on pin TXD while the mode select
window is open.
The TJA1028 contains a single supply pin, V
protect the device against negative voltages. The operating range is from 4.5 V to 28 V.
The TJA1028 can handle voltages up to 40 V (max). If the voltage on pin V
V
voltage regulator and disabling the LIN transmitter. The TJA1028 exits Off mode as soon
as the voltage rises above V
The TJA1028 contains a voltage regulator supplied via pin V
70 mA. It is designed to supply the microcontroller and its periphery via pin V
The output voltage on pin V
generated (pin RSTN goes LOW) if an undervoltage event is detected (V
t
The transceiver is the interface between a LIN master/slave protocol controller and the
physical bus in a Local Interconnect Network (LIN). It is primarily intended for in-vehicle
sub-networks using baud rates from 2.4 kBd up to 20 kBd and is LIN 2.0/LIN 2.1/SAE
J2602 compliant.
det(uv)(VCC)
LIN transceiver
Fig 4.
th(det)poff
operating
mode
TXD
EN
, the TJA1028 switches to Off mode, shutting down the internal logic and the
TXD is sampled during the mode select window. The TJA1028 switches to Standby (TXD HIGH) or
Sleep (TXD LOW) mode after sampling.
Transition from Normal to Sleep/Standby mode
).
t
msel(min)
Normal
wake(busdom)min
All information provided in this document is subject to legal disclaimers.
BAT
)
d(EN-TXD)
Rev. 2 — 25 February 2011
Normal withTXD
path blocked
CC
CC
th(det)pon
) is not reset on a transition to Sleep mode, TXD should be
after EN goes LOW. This is guaranteed by design.
)
is monitored continuously and a system reset signal is
, provided the junction temperature is below T
LIN transceiver with integrated voltage regulator
mode select window
t
msel(max)
BAT
. An external diode is needed in series to
TXD level in mode select window
Sleep or Standby depending on
BAT
, which delivers up to
TJA1028
© NXP B.V. 2011. All rights reserved.
CC
BAT
< V
CC
015aaa087
falls below
.
uvd
th(rel)otp
for
7 of 24
.