Datasheet

LTC2875
3
Rev A
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ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supplies
V
CC
Supply Voltage 3.3V V
CC
Range
l
3 3.3 3.6 V
5V V
CC
Range
l
4.5 5 5.5 V
I
CC(R)
Supply Current (Recessive)
l
1 1.8 3 mA
I
CC(D)
Supply Current (Dominant)
l
25 42 60 mA
I
CCS
Supply Current in Shutdown Mode (I-Grade) RS = TXD = V
CC
, RXD Open, T ≤ 85°C
l
1 5 µA
Supply Current in Shutdown Mode
(H-, MP-Grade)
RS
= TXD = V
CC
, RXD Open,
T ≤ 125°C
l
1 15 µA
Driver
V
O(D)
Bus Output Voltage
(Dominant)
CANH t
< t
TOTXD
V
CC
= 5V
l
2.75 3.6 4.5 V
V
CC
= 3.3V
l
2.15 2.9 3.3 V
CANL t < t
TOTXD
V
CC
= 5V
l
0.5 1.4 2.25 V
V
CC
= 3.3V
l
0.5 0.9 1.65 V
V
O(R)
Bus Output Voltage (Recessive) V
CC
= 5V, No Load (Figure1)
l
2 2.5 3 V
V
CC
= 3.3V, No Load (Figure1)
l
1.45 1.95 2.45 V
V
OD(D)
Differential Output Voltage (Dominant) R
L
= 50Ω to 65Ω (Figure1)
l
1.5 2.2 3.0 V
V
OD(R)
Differential Output Voltage (Recessive) No Load (Figure1)
l
–500 0 50 mV
V
OC(D)
Common Mode Output Voltage (Dominant) V
CC
= 5V, (Figure1)
l
2 2.5 3 V
V
CC
= 3.3V, (Figure1)
l
1.45 1.95 2.45 V
I
OS(D)
Bus Output Short-Circuit Current
(Dominant)
CANH CANH
= 0V
l
–100 –75 –40 mA
CANH –60V ≤ CANH ≤ 60V
l
–100 3 mA
CANL CANL = 5V
l
40 75 100 mA
CANL –60V ≤ CANL ≤ 60V
l
–3 100 mA
Receiver
V
CM
Bus Common Mode Voltage = (CANH + CANL)/2
for Data Reception
V
CC
= 5V
l
±36 V
V
CC
= 3.3V
l
±25 V
V
TH
+
Bus Input Differential Threshold Voltage
(Positive-Going)
V
CC
= 5V, –36V ≤ V
CM
≤ 36V
l
775 900 mV
V
CC
= 3.3V, –25V ≤ V
CM
≤ 25V
l
775 900 mV
V
TH
–
Bus Input Differential Threshold Voltage
(Negative-Going)
V
CC
= 5V, –36V ≤ V
CM
≤ 36V
l
500 625 mV
V
CC
= 3.3V, –25V ≤ V
CM
≤ 25V
l
500 625 mV
∆V
TH
Bus Input Differential Hysteresis Voltage V
CC
= 5V, –36V ≤ V
CM
≤ 36V 150 mV
V
CC
= 3.3V, –25V ≤ V
CM
≤ 25V 150 mV
R
IN
Input Resistance (CANH and CANL) TXD = V
CC
; R
IN
= ∆V/∆I; ∆I = ±20µA
l
25 40 50 kΩ
R
ID
Differential Input Resistance TXD = V
CC
; R
IN
= ∆V/∆I; ∆I = ±20µA
l
50 80 100 kΩ
∆R
IN
Input Resistance Matching R
IN
(CANH) to R
IN
(CANL)
l
±1 %
C
IH
Input Capacitance to GND (CANH) (Note 6) 32 pF
C
IL
Input Capacitance to GND (CANL) (Note 6) 8 pF
C
ID
Differential Input Capacitance (Note 6) 8.4 pF
I
L
Bus Leakage Current (Power Off) (I-Grade) V
CC
= 0V, CANH = CANL = 5V, T ≤ 85°C
l
±10 µA
Bus Leakage Current (Power Off) (H-, MP-Grade) V
CC
= 0V, CANH = CANL = 5V, T ≤ 125°C
l
±40 µA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.3V or 5V, Figure 1 applies with R
L
= 60Ω, RS = 0V, TYP values
at V
CC
= 5V unless otherwise noted. (Note 2)
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