L9924L datasheet(23/84 Pages) STMICROELECTRONICS

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DocID028840 Rev 3

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L9924L

Electrical specifications

15 Ibus_PAS_do

Input leakage current

at the receiver with

pull-up resistor

V(A+/B+) =12 V

[0x08].4 = LIN_PU_DIS = b0

V(TxD) = VTXDHIGH

V(LIN/BSS) = V(GND)

-1

16 Ibus_PAS_No

PU_dom

Input leakage current

at the receiver w/o

pull-up resistor

V(A+/B+) =12 V

[0x08].4 = LIN_PU_DIS = b1

V(TxD) = VTXDHIGH

V(LIN/BSS) = V(GND)

-0.85

17 Ibus_PAS_rec

Transmitter input

current in recessive

state

V(TxD) = VTXDHIGH

V(LIN/BSS) > 8 V

V(A+/B+) < 33 V

V(A+/B+)≤V(LIN/BSS)<V(A+/

B+)+0.3

µA

18 Ibus_NO_GND

Input current in case

of device GND loss

V(A+/B+)=V(GND) = 12 V

0 V < V(LIN/BSS) < 33 V

Ibus

Input current in case

of device A+/B+ loss

V(A+/B+) = V(GND)

0 V < V(LIN/BSS) < 33 V

3.5

LIN/BSS transmitter

VLINdom

LIN/BSS bus voltage

level in dominant state

V(TxD)=VTXDLOW

I(LIN/BSS) = 40 mA

1.35

VLINrec

LIN/BSS bus voltage

level in recessive

state

V(A+/B+) =12 V

V(TxD) = VTXDHIGH

I(LIN/BSS) = -10 µA

0.8

V(A+/B+)

RLINup

LIN/BSS bus pull up

resistor

V(LIN/BSS) = V(GND)



LIN/BSS timing

SRf

LIN/BSS bus slew rate

falling edge

V(A+/B+)=12V

From 20% to 80% of

V(LIN/BSS)

(Rbus,Cbus) = (1 kΩ, 1 nF)

V/µs

tRXpd

LIN/BSS-to-RxD

receiver

tRXDpdf=t[0,5*V(RxD)] -

t[0,45*V(LIN/BSS)]

tRXDpdr=t[0,5*V(RxD)]-

t[0,55*V(LIN/BSS)]

tRXDpd=max(tRXDpdr, tRXDpdf)

CRXD = 20 pF

V(A+/B+) = 12 V

(Rbus,Cbus) = (1 kΩ,1 nF),

(660 Ω,6.8 nF), (500 Ω,10nF)

µs

tRXDpd_sym

tRXDpd symmetry

(tRXDpdr Vs. tRXDpdf)

tRXpd_sym = tRXpdr –

tRXpdf

-4

µs

Table 13. Electrical characteristics pin "LIN/BSS" (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

L9924L Datasheet(PDF) 23 Page - STMicroelectronics

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