NXP Semiconductors
TJA1051
High-speed CAN transceiver
[4] Vcm(CAN) is the common mode voltage of CANH and CANL.
11. Dynamic characteristics
Table 7. Dynamic characteristics
Tvj = −40 °C to +150 °C; VCC = 4.5 V to 5.5 V; VIO = 2.8 V to 5.5 V[1]; RL = 60 Ω unless specified otherwise. All voltages are
defined with respect to ground. Positive currents flow into the IC.[2]
Symbol
Parameter
Conditions
Min Typ Max
Unit
Transceiver timing; pins CANH, CANL, TXD and RXD; see Figure 4 and Figure 5
td(TXD-busdom) delay time from TXD to bus dominant Normal mode
-
65 -
ns
td(TXD-busrec) delay time from TXD to bus recessive Normal mode
-
90 -
ns
td(busdom-RXD) delay time from bus dominant to RXD Normal and Silent modes
-
60 -
ns
td(busrec-RXD) delay time from bus recessive to RXD Normal and Silent modes
-
65 -
ns
tPD(TXD-RXD) propagation delay from TXD to RXD versions with pin 5 n.c.
Normal mode
40
-
220
ns
versions with VIO pin
Normal mode
40
-
250
ns
tto(dom)TXD
TXD dominant time-out time
VTXD = 0 V; Normal mode
0.3 1
12
ms
[1] Only TJA1051T/3 and TJA1051TK/3 have a VIO pin. In transceivers without a VIO pin, the VIO input is internally connected to VCC.
[2] All parameters are guaranteed over the virtual junction temperature range by design. Products are 100 % tested at 125 °C ambient
temperature (wafer level pretesting), and 100 % tested at 25 °C ambient temperature (final testing). Both pretesting and final testing use
correlated test conditions to cover the specified temperature and power supply voltage range.
+5 V
47 µF
100 nF
VIO(1)
VCC
TXD
CANH
TJA1051
RL
100 pF
RXD
CANL
GND
S
15 pF
015aaa040
(1) For versions with a VIO pin (TJA1051T/3 and TJA1051TK/3), the VIO input is connected to pin VCC.
Fig 4. Timing test circuit for CAN transceiver
TJA1051_4
Product data sheet
Rev. 04 — 20 October 2009
© NXP B.V. 2009. All rights reserved.
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