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MCP2551 Datasheet(PDF) 4 Page - Microchip Technology

Part No. MCP2551
Description  High-Speed CAN Transceiver
Download  24 Pages
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP2551 Datasheet(HTML) 4 Page - Microchip Technology

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MCP2551
DS21667E-page 4
© 2007 Microchip Technology Inc.
TABLE 1-1:
MODES OF OPERATION
TABLE 1-2:
TRANSCEIVER TRUTH TABLE
FIGURE 1-1:
SLEW RATE VS. SLOPE-CONTROL RESISTANCE VALUE
Mode
Current at Rs Pin
Resulting Voltage at RS Pin
Standby
-IRS < 10 µA
VRS > 0.75 VDD
Slope-control
10 µA < -IRS < 200 µA
0.4 VDD < VRS < 0.6 VDD
High-speed
-IRS < 610 µA
0 < VRS < 0.3VDD
VDD
VRS
TXD
CANH
CANL
Bus State(1)
RXD(1)
4.5V
≤ VDD ≤ 5.5V
VRS < 0.75 VDD
0
HIGH
LOW
Dominant
0
1 or floating
Not Driven
Not Driven
Recessive
1
VRS > 0.75 VDD
X
Not Driven
Not Driven
Recessive
1
VPOR < VDD < 4.5V
(See Note 3)
VRS < 0.75 VDD
0
HIGH
LOW
Dominant
0
1 or floating
Not Driven
Not Driven
Recessive
1
VRS > 0.75 VDD
X
Not Driven
Not Driven
Recessive
1
0 < VDD < VPOR
X
X
Not Driven/
No Load
Not Driven/
No Load
High Impedance
X
Note 1:
If another bus node is transmitting a dominant bit on the CAN bus, then RXD is a logic ‘0’.
2:
X = “don’t care”.
3:
Device drivers will function, although outputs are not ensured to meet the ISO-11898 specification.
0
5
10
15
20
25
10
20
30
40
49
60
70
76
90 100 110 120
Resistance (k
Ω)


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