TJA1086 Datasheet, PDF (46/62 Pages) NXP Semiconductors – FlexRay active star coupler

NXP Semiconductors
TJA1086
FlexRay active star coupler
Table 15. Dynamic 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; R_bus = 40 , C_bus = 100 pF; C_RXD = 15 pF; C_TRXD0 = C_TRXD1 = 50 pF and C_SDO = 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
Bus error diagnosis
t_to(BFT)
BFT time-out time
Clamp detection
80
-
180 ns
t_detCL(bus)
bus clamp detection time
t_detCL(TRXD)
TRXD clamp detection time
t_detCL(TXEN)
TXEN clamp detection time
t_{det(col)(TRXD)}
TRXD collision detection time
Transition timing
650 -
650 -
650 -
40
-
2600 s
2600 s
2600 s
120 ns
t_{to_stargotosleep}
t_{t(bnorm-bdis)}
dStarGoToSleep time-out time
branch normal to branch disabled
transition time
AS_Normal; after a host
‘Branch_Disabled’ command; rising
edge on SCSN to transmitter
deactivated
640 -
-
-
6400 ms
1
s
t_{t(bdis-bnorm)}
branch disabled to branch normal AS_Normal; after a host
-
transition time
‘Branch_Normal’ command; rising
edge on SCSN to transmitter
activated
-
1
s
t_{t(bnorm-btx2)}
branch normal to branch TxOnly2 AS_Normal; after a host
-
transition time
‘Branch_TxOnly’ command; rising
edge on SCSN to deactivating
receive function
-
1
s
t_{t(btx2-bnorm)}
branch TxOnly2 to branch normal AS_Normal; after a host
-
transition time
‘Branch_Normal’ command; rising
edge on SCSN to activating receive
function
-
1
s
t_t(moch)
mode change transition time
after host command
-
AS_Sleep to AS_Standby
rising edge on SCSN to rising edge
on INH
-
25 s
[1] Sum of rise and fall times on TXD (20 % to 80 % on V_IO) is 9 ns (max).
[2] Guaranteed for V_bus(dif) = 300 mV and V_bus(dif) = 150 mV; V_bus(dif) is the differential bus voltage, V_BP - V_BM.
[3] V_cm is the BP/BM common mode voltage (V_cm = (V_BP + V_BM)/2).
[4] Defined for V_INH = 2 V.
TJA1086
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 18 April 2013
© NXP B.V. 2013. All rights reserved.
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