Datasheet

© 2007 Microchip Technology Inc. DS21667E-page 9
MCP2551
2.2 DC Characteristics
DC Specifications
Electrical Characteristics:
Industrial (I): TAMB = -40°C to +85°C VDD = 4.5V to 5.5V
Extended (E):T
AMB = -40°C to +125°C VDD = 4.5V to 5.5V
Param
No.
Sym Characteristic Min Max Units Conditions
Supply
D1 I
DD Supply Current — 75 mA Dominant; VTXD = 0.8V; VDD
D2 — 10 mA Recessive; VTXD = +2V;
R
S = 47 kΩ
D3 — 365 µA -40°C ≤ T
AMB
≤ +85°C,
Standby; (Note 2)
— 465 µA -40°C ≤ T
AMB
≤ +125°C,
Standby; (Note 2)
D4 V
PORH High-level of the power-on reset
comparator
3.8 4.3 V CANH, CANL outputs are
active when V
DD > VPORH
D5 VPORL Low-level of the power-on reset
comparator
3.4 4.0 V CANH, CANL outputs are not
active when V
DD < VPORL
D6 VPORD Hysteresis of power-on reset
comparator
0.3 0.8 V Note 1
Bus Line (CANH; CANL) Transmitter
D7 V
CANH
(r);
VCANL
(r)
CANH, CANL Recessive bus
voltage
2.0 3.0 V VTXD = VDD; no load.
D8 I
O(CANH)(reces)
I
O(CANL)(reces)
Recessive output current -2 +2 mA -2V < V(
CAHL,CANH) < +7V,
0V <V
DD < 5.5V
D9 -10 +10 mA -5V < V(
CANL,CANH) < +40V,
0V <V
DD < 5.5V
D10 V
O(CANH) CANH dominant output voltage 2.75 4.5 V VTXD = 0.8V
D11 V
O(CANL) CANL dominant output voltage 0.5 2.25 V VTXD = 0.8V
D12 V
DIFF(r)(o) Recessive differential output
voltage
-500 +50 mV VTXD = 2V; no load
D13 V
DIFF(d)(o) Dominant differential output
voltage
1.5 3.0 V VTXD = 0.8V; VDD = 5V
40Ω < R
L < 60Ω (Note 2)
D14 I
O(SC)(CANH) CANH short-circuit output current — -200 mA VCANH = -5V
D15 — -100
(typical)
mA V
CANH = -40V, +40V. (Note 1)
D16 I
O(SC)(CANL)l CANL short-circuit output current — 200 mA VCANL = -40V, +40V. (Note 1)
Bus Line (CANH; CANL) Receiver: [TXD = 2V; pins 6 and 7 externally driven]
D17 V
DIFF(r)(i) Recessive differential input
voltage
-1.0 +0.5 V -2V < V(CANL, CANH) < +7V
(Note 3)
-1.0 +0.4 V -12V < V(
CANL, CANH) < +12V
(Note 3)
D18 V
DIFF(d)(i) Dominant differential input
voltage
0.9 5.0 V -2V < V(CANL, CANH) < +7V
(Note 3)
1.0 5.0 V -12V < V(
CANL, CANH) < +12V
(Note 3)
D19 V
DIFF(h)(i) Differential input hysteresis 100 200 mV see Figure 2-3. (Note 1)
D20 R
IN CANH, CANL common-mode
input resistance
550kΩ
D21 R
IN(d) Deviation between CANH and
CANL common-mode input resis-
tance
-3 +3 % VCANH = VCANL
Note 1: This parameter is periodically sampled and not 100% tested.
2: I
TXD = IRXD = IVREF = 0 mA; 0V < VCANL < VDD; 0V < VCANH < VDD; VRS = VDD
.
3: This is valid for the receiver in all modes; High-speed, Slope-control and Standby.