L9788 datasheet(156/264 Pages) STMICROELECTRONICS

156 / 264 page

CAN FD interface

L9788

156/264

DS12308 Rev 4

td,TXDC(rec-diff)

TxDC - CANH,L

Delay Time recessive

- dominant

RL = 60 Ω (±1%);

C2=100pF (±1%); 30%

VTXD – VDIFF = 0.9 V;

TXDC fall time = 10ns

(90% - 10%)

Guaranteed by bench

correlation

120

tTXDC_DOM_TO

TxDC dominant time-

out

-0.8

Table 65. CAN transmit data input: Pin TxDC (continued)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Table 66. CAN transmit data output: Pin RxDC

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

VRXDCLOW

Output voltage

dominant level

Active mode,



IRXDC = 2 mA

(0)

0.2

0.5

CAN_RX

VRXDCHIGH

Output voltage

recessive level

Active mode,



IRXDC = -2 mA

VDDIO-

0.5

VDDIO

-0.2

VDDIO

CAN_RX

tr, RXDC

RxDC rise time

CRX = 15 pF,



30% – 70% VRXDC

Guaranteed by bench

correlation

tf, RXDC

RxDC fall time

CRX = 15 pF,



70% – 30% VRXDC

Guaranteed by bench

correlation

td, RXDC

(dom-rec)

CANH,L – RxDC

Delay Time

dominant -

recessive

CRX = 15 pF,



VDIFF = 0.5V – 70%

VRXDC

Guaranteed by bench

correlation

120

td, RXDC

(rec - dom)

CANH,L – RxDC

Delay Time

recessive -

dominant

CRX = 15 pF,



VDIFF = 0.9 V – 30%

VRXDC

120

Table 67. CAN transmitter dominant output characteristics

Symbol

Parameter

Test condition

Min

Typ

Max Unit

VCANHdom

Single Ended CANH

voltage level in dominant

state

VTXDC = VTXDCLOW; 

RL = 50 Ω to 65 Ω;

2.75

3.5

4.5

VCANLdom

Single Ended CANL

voltage level in dominant

state

VTXDC = VTXDCLOW; 

RL = 50 Ω to 65 Ω;

0.5

1.5

2.25

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