TJA1022TK,118 NXP Semiconductors, TJA1022TK,118 Datasheet - Page 6

• Manufacturer Part Number: TJA1022TK,118
• Description: LIN Transceivers DUAL LIN 5-18V
• Manufacturer: NXP Semiconductors

Specifications of TJA1022TK,118

• Rohs: yes
• Operating Supply Voltage: 5 V to 18 V
• Supply Current: 10 mA
• Package / Case: HVSON-14
• Mounting Style: SMD/SMT
• Factory Pack Quantity: 6000

NXP Semiconductors
TJA1022
Product data sheet
Fig 3.
(1) A positive edge on SLPx_N triggers a transition to Normal mode in the corresponding LIN transceiver; the LIN transmitter is
(2) Power dissipation is at a minimum when both transceivers are in Sleep mode.
(3) When a transceiver switches to Standby mode in response to a LIN bus wake-up event, the associated RXDx pin (RXD1 or
enabled once TXDx goes HIGH; in the event of thermal shutdown, both LIN transceivers are disabled.
RXD2) will be LOW to indicate which LIN channel was the source of the wake-up request.
State diagram
rising V
7.2.2 Sleep mode
BAT
A transceiver will switch to Sleep mode from Normal mode if SLPx_N is held LOW for
t
Power consumption is very low when both transceivers are in Sleep mode.
The voltage levels on LINx and TXDx have no effect on a transition to Sleep mode. So the
transceiver will still switch to Sleep mode even if TXDx is held LOW or there is a
continuous dominant level on LINx (e.g. due to a short circuit to ground).
Although current consumption is extremely low when both transceivers are in Sleep
mode, the TJA1022 can still be woken up remotely via the LIN bus pins or by the
microcontroller via pins SLPx_N. Filters on the receiver inputs (LIN1 and LIN 2) and on
pins SLPx_N prevent unwanted wake-up events occurring due to automotive transients or
radio frequency interference. To be valid, all wake-up events must be maintained for a
specific length of time (t
SLPx_N). Pin RXDx is floating when a transceiver is in Sleep mode.
> V
gotosleep
th(POR)H
Transmitter: off
RXDx: floating
Sleep x
Transmitter: off
RXDx: floating
. The relevant LIN transmit path is disabled as soon as SLPx_N goes LOW.
Reset
(2)
t
(SLPx_N = 1)
All information provided in this document is subject to legal disclaimers.
t
> t
(LINx = 0 → 1; after LINx = 0)
Rev. 1 — 30 March 2012
wake(dom)LIN
gotonorm
falling V
t
(SLPx_N = 0)
BAT
for a remote wake-up and t
< V
th(POR)L
> t
> t
wake(dom)LIN
gotosleep
RXDx: data output
Transmitter: on
Normal x
Dual LIN 2.2/SAE J2602 transceiver
t
(1)
(SLPx_N = 1)
Transmitter: off
RXDx: LOW
Standby x
gotonorm
> t
gotonorm
(3)
015aaa290
for a wake-up via
TJA1022
© NXP B.V. 2012. All rights reserved.
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