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

Differential input resistance

20

100

k

Ω

D24

CANH, CANL input leakage

current

—150

µA

Transmitter Data Input (TXD)

D25

High-level input voltage

2.0

V

Output recessive

D26

Low-level input voltage

+0.8

V

Output dominant

D27

High-level input current

-1

+1

µA

D28

Low-level input current

-100

-400

µA

Receiver Data Output (RXD)

D31

High-level output voltage

—V

D32

Low-level output voltage

—

0.8

V

D33

Reference output voltage

D34

Input voltage for standby mode

—V

D35

Slope-control mode current

-10

-200

µA

D36

Slope-control mode voltage

V

Thermal Shutdown

D37

Shutdown junction temperature

155

180

Note 1

D38

Shutdown temperature hysteresis

20

30

(Note 3)

2.2

DC Characteristics (Continued)

DC Specifications (Continued)

Electrical Characteristics:

Param

No.

Sym

Characteristic

Min

Max

Units

Conditions

Note

1:

This parameter is periodically sampled and not 100% tested.

2:

3:

This is valid for the receiver in all modes; High-speed, Slope-control and Standby.

Rext

GND

RXD

TXD

60

Ω

100 pF

30 pF

CANH

CANL

CAN

Transceiver

Note:

operating mode as described in Section 1.7.8, “Slope Resistor Input (Rs)”.

0.1µF