NCV7349
www.onsemi.com
8
Table 6. CHARACTERISTICS (V
CC
= 4.75 V to 5.25 V; V
IO
= 2.8 V to 5.5 V (NCV7349−3 only); T
J
= −40 to +150°C; R
LT
= 60 W
unless specified otherwise. On chip versions without V
IO
pin, reference voltage for all digital inputs and outputs is V
CC
instead of V
IO
.)
Symbol UnitMaxTypMinConditionsParameter
BUS LINES (Pins CANH and CANL)
I
LI(CANH)
Input leakage current to pin CANH
0 W < R(V
CC
to GND) < 1 MW
V
CANL
= V
CANH
= 5 V
−10 0 10
mA
I
LI(CANL)
Input leakage current to pin CANL
0 W < R(V
CC
to GND) < 1 MW
V
CANL
= V
CANH
= 5 V
−10 0 10
mA
V
o(dom)
(CANH)
Dominant output voltage at pin CANH V
TxD
= 0 V 3.0 3.6 4.25 V
V
o(dom)
(CANL)
Dominant output voltage at pin CANL V
TxD
= 0 V 0.5 1.4 1.75 V
V
o(dif)
(bus_dom)
Differential bus output voltage
(V
CANH
− V
CANL
)
V
TxD
= 0 V; dominant;
45 W < R
LT
< 65 W
1.5 2.25 3.0 V
V
o(dif)
(bus_rec)
Differential bus output voltage
(V
CANH
− V
CANL
)
V
TxD
= V
IO
; recessive; no load −120 0 +50 mV
I
o(sc)
(CANH)
Short circuit output current at pin CANH V
CANH
= 0 V; V
TxD
= 0 V −100 −70 −45 mA
I
o(sc)
(CANL)
Short circuit output current at pin CANL V
CANL
= 36 V; V
TxD
= 0 V 45 70 100 mA
V
i(dif)R
(th)
Differential receiver threshold voltage –
Dominant to Recessive (see Figure 6)
−2 V < V
CANL
< +7 V;
−2 V < V
CANH
< +7 V
0.5 0.6 0.7 V
V
i(dif)D
(th)
Differential receiver threshold voltage –
Recessive to Dominant (see Figure 6)
−2 V < V
CANL
< +7 V;
−2 V < V
CANH
< +7 V
0.7 0.8 0.9 V
V
ihcmR(dif)
(th)
Differential receiver threshold voltage –
Dominant to Recessive (see Figure 6)
−35 V < V
CANL
< +35 V;
−35 V < V
CANH
< +35 V
0.4 − 0.8 V
V
ihcmD(dif)
(th)
Differential receiver threshold voltage –
Recessive to Dominant (see Figure 6)
−35 V < V
CANL
< +35 V;
−35 V < V
CANH
< +35 V
0.6 − 1 V
V
ihcmD12(dif)
(th)
Differential receiver threshold voltage –
Both transitions (see Figure 6)
−12 V < V
CANL
< +12 V;
−12 V < V
CANH
< +12 V
0.5 − 0.9 V
V
i(dif)
(hys)
Differential receiver input voltage hys-
teresis
−2 V < V
CANL
< +7 V;
−2 V < V
CANH
< +7 V
100 200 300 mV
V
i(dif)
(th)_STDBY
Differential receiver threshold voltage
in standby mode
−12 V < V
CANL
< +12 V;
−12 V < V
CANH
< +12 V
0.4 0.8 1.15 V
R
i(cm)
(CANH)
Common−mode input resistance at pin
CANH
15 26 37
kW
R
i(cm)
(CANL)
Common−mode input resistance at pin
CANL
15 26 37
kW
R
i(cm)
(m)
Matching between pin CANH and pin
CANL common mode input resistance
V
CANH
= V
CANL
−3 0 +3 %
R
i(dif)
Differential input resistance 25 50 75
kW
C
i(CANH)
Input capacitance at pin CANH V
TxD
= V
IO
; (Note 9) − − 30 pF
C
i(CANL)
Input capacitance at pin CANL V
TxD
= V
IO
; (Note 9) − − 30 pF
C
i(dif)
Differential input capacitance V
TxD
= V
IO
; (Note 9) − 3.75 10 pF
THERMAL SHUTDOWN
T
J(sd)
Shutdown junction temperature Junction temperature rising 150 170 185 °C
TIMING CHARACTERISTICS (see Figure 5 and Figure 8)
t
d(TxD−BUSon)
Delay TxD to bus active C
i
= 100 pF between CANH to
CANL
− 50 − ns
t
d(TxD−BUSoff)
Delay TxD to bus inactive C
i
= 100 pF between CANH to
CANL
− 60 − ns
t
d(BUSon−RxD)
Delay bus active to RxD C
RxD
= 15 pF − 60 − ns
t
d(BUSoff−RxD)
Delay bus inactive to RxD C
RxD
= 15 pF − 60 − ns
9. Values based on design and characterization, not tested in production
