SPSB081 datasheet(68/137 Pages) STMICROELECTRONICS

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Symbol

Parameter

Condition

Min Typ Max Unit Item

VDIFF_Arb

Differential output voltage in dominant state

during arbitration:

VCANHdom - VCANLdom

VTXDC = VTXDCLOW

RL = 2240 Ω

1.5

E.024

VDIFF,dom_ext

Differential output voltage in dominant state on

extended bus load range:

VCANHdom - VCANLdom

VTXDC = VTXDCLOW

RL = 45 Ω…70 Ω

1.4

3.3

E.025

VDIFF,domVsLow

Differential output voltage in dominant state:

VCANHdom - VCANLdom at low VSREG

VTXDC = VTXDCLOW

RL = 50 Ω…65 Ω

5 V < VSREG < 5.5 V(1)

1.35

E.026

VDIFF,dom_ext_ VsLow

Differential output voltage in dominant state:

VCANHdom - VCANLdom with 45 Ω…70 Ω load at

low VSREG

VTXDC = VTXDCLOW

RL = 45 Ω…70 Ω

5 V < VSREG < 5.5 V (1)

1.25

3.3

E.027

VSYM

Driver symmetry

VSYM = (VCANH + VCANL)/VCANSUP

VCANSUP = 5 V(2)

RL = 60 Ω ±1%

fTXDC = 1 MHz(3)

CSPLIT = 4.7 nF (±5%)

0.9

1.1

E.028

IOCANH,dom (-3 V)

CANH output current in dominant state

VTXDC = VTXDCLOW

VCANH = -3 V…18 V

-115

115

mA E.029

IOCANL,dom (18 V)

CANL output current in dominant state

VTXDC = VTXDCLOW

VCANL = -3 V…18 V

-115

115

mA E.030

IOCANL,dom (40 V)

CANL output current in dominant state

VTXDC = VTXDCLOW;

VCANL = 40 V

VSREG = 40 V

115

mA E.032

1. VSREG at device pin after reverse battery protection, while application is supplied with 6 V. Operating condition has to be

adapted, if a higher voltage drop occurs in the application.

2. Put into the datasheet, if it is an internal voltage. If it is an external pin, it should be supplied externally.

3. Measurement equipment input load < 20 pF, > 1 MΩ, guaranteed by E.025, E.026, E.029, E.030, E.053, E.054

measurements.

Table 44. CAN transmitter recessive output characteristics, CAN normal mode

Symbol

Parameter

Condition

Min Typ Max Unit Item

VCANHrec

CANH voltage level in recessive state (normal mode)

VTXDC = VTXDCHIGH

No load

2.5

E.033

VCANLrec

CANL voltage level in recessive state (normal mode)

VTXDC = VTXDCHIGH

No load

2.5

E.034

VDIFF,recOUT

Differential output voltage in recessive state (normal

mode):

VCANHrec - VCANLrec

VTXDC = VTXDCHIGH

No load

-50

mV E.035

Note:

CAN normal mode: tested in TRX normal state while the device is in active mode.

SPSB081

CAN FD transceiver

DS14048 - Rev 3

page 68/137

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