TJA1044 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2017. All rights reserved.
Product data sheet Rev. 6 — 24 August 2017 13 of 27
NXP Semiconductors
TJA1044
High-speed CAN transceiver with Standby mode
11. Dynamic characteristics
[1] Only TJA1044x/3 variants have a V
IO
pin; all circuitry is connected to V
CC
in the other variants.
[2] Factory testing uses correlated test conditions to cover the specified temperature and power supply voltage range.
[3] See Figure 5
.
Table 8. Dynamic characteristics
T
vj
=
40
C to +150
C; V
CC
= 4.75 V to 5.25 V; V
IO
= 2.95 V to 5.25 V
[1]
; R
L
=60
; C
L
= 100 pF unless specified otherwise.
All voltages are defined with respect to ground.
[2]
Symbol Parameter Conditions Min Typ Max Unit
Transceiver timing; pins CANH, CANL, TXD and RXD; see Figure 8
and Figure 4
t
d(TXD-busdom)
delay time from TXD to bus dominant Normal mode - 65 - ns
t
d(TXD-busrec)
delay time from TXD to bus recessive Normal mode - 90 - ns
t
d(busdom-RXD)
delay time from bus dominant to RXD Normal mode - 60 - ns
t
d(busrec-RXD)
delay time from bus recessive to RXD Normal mode - 65 - ns
t
d(TXDL-RXDL)
delay time from TXD LOW to RXD LOW TJA1044T; Normal mode 50 - 230 ns
all other variants; Normal mode 50 - 210 ns
t
d(TXDH-RXDH)
delay time from TXD HIGH to RXD HIGH TJA1044T; Normal mode 50 - 230 ns
all other variants; Normal mode 50 - 210 ns
t
bit(bus)
transmitted recessive bit width TJA1044Gx
t
bit(TXD)
= 500 ns
[3]
435 - 530 ns
t
bit(TXD)
= 200 ns
[3]
155 - 210 ns
t
bit(RXD)
bit time on pin RXD TJA1044Gx
t
bit(TXD)
= 500 ns
[3]
400 - 550 ns
t
bit(TXD)
= 200 ns
[3]
120 - 220 ns
t
rec
receiver timing symmetry TJA1044Gx
t
bit(TXD)
= 500 ns 65 - +40 ns
t
bit(TXD)
= 200 ns 45 - +15 ns
t
to(dom)TXD
TXD dominant time-out time V
TXD
= 0 V; Normal mode 0.8 3 6.5 ms
t
d(stb-norm)
standby to normal mode delay time 7 25 47 s
t
wake(busdom)
bus dominant wake-up time Standby mode;
variants with a V
IO
pin
0.5 - 1.8 s
Standby mode;
variants without a V
IO
pin
0.5 - 3.0 s
t
wake(busrec)
bus recessive wake-up time Standby mode;
variants with a V
IO
pin
0.5 - 1.8 s
Standby mode;
variants without a V
IO
pin
0.5 - 3.0 s
t
to(wake)bus
bus wake-up time-out time Standby mode 0.8 3 6.5 ms
t
fltr(wake)bus
bus wake-up filter time Standby mode
variants without a V
IO
pin 0.5 1 3 s
variants with a V
IO
pin 0.5 - 1.8 s
