Datasheet

MCP2551
DS21667E-page 10 © 2007 Microchip Technology Inc.
FIGURE 2-1: TEST CIRCUIT FOR ELECTRICAL CHARACTERISTICS
Bus Line (CANH; CANL) Receiver: [TXD = 2V; pins 6 and 7 externally driven]
D22 R
DIFF Differential input resistance 20 100 kΩ
D24 I
LI CANH, CANL input leakage
current
—150µAVDD < VPOR;
V
CANH = VCANL = +5V
Transmitter Data Input (TXD)
D25 V
IH High-level input voltage 2.0 VDD V Output recessive
D26 V
IL Low-level input voltage VSS +0.8 V Output dominant
D27 I
IH High-level input current -1 +1 µA VTXD = VDD
D28 IIL Low-level input current -100 -400 µA VTXD = 0V
Receiver Data Output (RXD)
D31 V
OH High-level output voltage 0.7 VDD —VIOH = 8 mA
D32 V
OL Low-level output voltage — 0.8 V IOL = 8 mA
Voltage Reference Output (V
REF)
D33 V
REF Reference output voltage 0.45 VDD 0.55 VDD V-50µA < IVREF < 50 µA
Standby/Slope-Control (R
S pin)
D34 V
STB Input voltage for standby mode 0.75 VDD —V
D35 I
SLOPE Slope-control mode current -10 -200 µA
D36 V
SLOPE Slope-control mode voltage 0.4 VDD 0.6 VDD V
Thermal Shutdown
D37 T
J
(sd)
Shutdown junction temperature 155 180
o
C
Note 1
D38 T
J
(h)
Shutdown temperature hysteresis 20 30
o
C
-12V < V(
CANL, CANH) < +12V
(Note 3)
2.2 DC Characteristics (Continued)
DC Specifications (Continued)
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
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.
RS
Rext
GND
RXD
V
REF
TXD
60 Ω
100 pF
30 pF
CANH
CANL
CAN
Transceiver
Note: RS may be connected to VDD or GND via a load resistor depending on desired
operating mode as described in Section 1.7.8, “Slope Resistor Input (Rs)”.
0.1µF
V
DD