NCV7381(2012) データシートの表示（PDF） - ON Semiconductor

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NCV7381
(Rev.:2012)

FlexRay® Bus Driver

ON Semiconductor 

NCV7381

Table 12. TRANSMISSION PARAMETERS

Symbol

Parameter

Conditions

Min

Typ

Max Unit

uBDTxactive

Differential voltage |uBP−uBM| when sending

RBUS = 40−55 W;

600

symbol “Data_0” or “Data_1”

CBUS = 100 pF

uBDTxIdle

Differential voltage |uBP−uBM| when driving

signal “Idle”

Parameters defined in

Figure 10.

0

2000 mV

30

mV

dBDTx10

Transmitter delay, negative edge

Test setup as per

dBDTx01

dBDTxAsym

Transmitter delay, positive edge

Transmitter delay mismatch,

|dBDTx10−dBDTx01| (Note 7)

Figure 17 with

RBUS = 40 W;

CBUS = 100 pF

Sum of TXD signal rise

and fall time

dBusTx10

Fall time of the differential bus voltage from

(20%−80% VIO)

6

80% to 20%

of up to 9 ns

75

ns

75

ns

4

ns

18.75 ns

dBusTx01

Rise time of the differential bus voltage from

6

20% to 80%

Parameters defined in

Figure 10.

dBusTxDif

Differential bus voltage fall and rise time mis-

match |dBusTx10−dBusTx01|

18.75 ns

3

ns

dBDTxia

dBDTxai

dBDTxDM

dBusTxia

dBusTxai

Transmitter delay idle −> active

Transmitter delay active −> idle

Idle−active transmitter delay mismatch

| dBDTxia − dBDTxai |

Transition time idle −> active

Transition time active −> idle

Test setup as per

Figure 17 with

RBUS = 40 W;

CBUS = 100 pF

Parameters defined in

Figure 11.

75

ns

75

ns

50

ns

30

ns

30

ns

dTxENLOW

dBDTxActiveMax

Time span of bus activity

Maximum length of transmitter activation

550

650

ns

650

2600

ms

iBPBMShortMax

iBMBPShortMax

iBPGNDShortMax

iBMGNDShortMax

iBP−5VShortMax

iBM−5VShortMax

iBPBAT27ShortMax

iBMBAT27ShortMax

iBPBAT48ShortMax

iBMBAT48ShortMax

RBDTransmitter

Absolute maximum output current when BP

shorted to BM – no time limit

Absolute maximum output current when shor-

ted to GND – no time limit

Absolute maximum output current when shor-

ted to VBAT = −5 V – no time limit

Absolute maximum output current when shor-

ted to VBAT = 27 V – no time limit

Absolute maximum output current when shor-

ted to VBAT = 48 V – no time limit

Bus interface equivalent output impedance

(Bus driver simulation model parameter)

RShortCircuit ≤ 1 W

RShortCircuit ≤ 1 W

RShortCircuit ≤ 1 W

RShortCircuit ≤ 1 W

RShortCircuit ≤ 1 W

60

mA

60

mA

60

mA

60

mA

72

mA

31

105

500

W

7. Guaranteed for ±300 mV and ±150 mV level of uBus

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