Datasheet
TJA1085 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 1 — 23 October 2012 40 of 61
NXP Semiconductors
TJA1085
FlexRay active star coupler
[1] Specified current is the sum of currents I
CC1
and I
CC2
.
[2] These values are guaranteed under the condition that the internal digital block is supplied from V
BAT
.
[3] Guaranteed by design.
[4] V
cm
is the BP/BM common mode voltage.
[5] Z
o(eq)(TX)
= 50 (V
bus(100)
-V
bus(40)
)/(2.5 V
bus(40)
-V
bus(100)
) where:
- V
bus(100)
is the differential output voltage on a load of 100 and 100 pF in parallel
- V
bus(40)
is the differential output voltage on a load of 40 and 100 pF in parallel when driving a DATA_1.
[6] R
sc
is the short-circuit resistance; voltage difference between bus pins BP and BM is 60 V max.
[7] R
sc
is the short-circuit resistance between BP and BM.
[8] t
sc
is the minimum duration of the short-circuit
V
O
output voltage when undervoltage on V
IO
;
V
CC
4.75 V; R
L
= 100 k to GND
--500mV
V
CC
=V
BAT
=V
BUF
=0V;
R
L
= 100 k to GND
--500mV
Pin SDI
V
IH
HIGH-level input voltage 0.7V
IO
-5.5V
V
IL
LOW-level input voltage 0.3 - 0.3V
IO
V
R
pd
pull-down resistance to GND 50 150 400 k
Pin SCSN
V
IH
HIGH-level input voltage 0.7V
IO
-5.5V
V
IL
LOW-level input voltage 0.3 - 0.3V
IO
V
I
IH
HIGH-level input current V
SCSN
=V
IO
1-+1A
I
IL
LOW-level input current V
SCSN
=0.3V
IO
15 - 3 A
Pin SCLK
V
IH
HIGH-level input voltage 0.7V
IO
-5.5V
V
IL
LOW-level input voltage 0.3 - 0.3V
IO
V
R
pd
pull-down resistance to GND 50 150 400 k
Pin INTN
V
OL
LOW-level output voltage I
OL(INTN)
= 0.5 mA - - 0.4 V
V
O
output voltage when undervoltage on V
IO
;
V
CC
4.75 V; R
L
= 100 k to GND
--500mV
V
CC
=V
BAT
=V
BUF
=0V;
R
L
= 100 k to GND
--500mV
Temperature protection
T
j(warn)
warning junction
temperature
155 - 190 C
T
j(high)
high junction temperature 165 - 200 C
T
j(high-warn)
difference between high and
warning junction
temperature
10 - 45 C
Table 14. Static characteristics …continued
All parameters are guaranteed for V
BAT
= 4.45 V to 60 V; V
CC
= 4.45 V to 5.25 V; V
BUF
= 4.45 V to 5.25 V;V
IO
= 2.55 V to
5.25 V; T
vj
=
40
C to +150
C; C
bus
= 100 pF; R
bus
= 40
to 55
; C
RXD
= 15 pF and C
TRXD0
= C
TRXD1
= 50 pF unless
otherwise specified. All voltages are defined with respect to ground; positive currents flow into the IC.
Symbol Parameter Conditions Min Typ Max Unit