MCP2561FD datasheet(13/32 Pages) MICROCHIP

13 / 32 page

 2014 Microchip Technology Inc.

DS20005284A-page 13

MCP2561/2FD

FIGURE 2-3:

TEST LOAD CONDITIONS

2.4

AC Characteristics

Electrical Characteristics: Extended (E): TAMB = -40°C to +125°C and High (H): TAMB = -40°C to +150°C;



VDD = 4.5V to 5.5V, VIO = 1.8V to 5.5V (Note 2), RL = 60

CL = 100 pF; unless otherwise specified.

Param.

No.

Sym

Characteristic

Min

Typ

Max

Units

Conditions

tBIT

Bit Time

0.2

—

69.44

µs

fBIT

Bit Frequency

14.4

—

5000

kHz

tTXD-BUSON Delay TXD Low to Bus Dominant

—

(Note 1)

tTXD-BUSOFF Delay TXD High to Bus Recessive

—

(Note 1)

tBUSON-RXD Delay Bus Dominant to RXD

—

(Note 1)

tBUSOFF-RXD Delay Bus Recessive to RXD

—

(Note 1)

tTXD - RXD

Propagation Delay TXD to RXD

—

120

—

120

180

RL = 120

CL = 200 pF,

(Note 1)

tBIT(RXD),2M

Recessive bit time on RXD -

2 Mbps, Loop Delay Symmetry

450

485

550

tBIT(TXD) = 500 ns,

see Figure 2-10

400

460

550

tBIT(TXD) = 500 ns,

see Figure 2-10,



RL = 120

CL = 200 pF,

(Note 1)

tBIT(RXD),5M

Recessive bit time on RXD -

5 Mbps, Loop Delay Symmetry

160

185

220

tBIT(TXD) = 200 ns,

see Figure 2-10

tBIT(RXD),8M

Recessive bit time on RXD -

8 Mbps, Loop Delay Symmetry

105

140

tBIT(TXD) = 120 ns,

see Figure 2-10



(Note 1)

tFLTR(WAKE) Delay Bus Dominant to RXD



(Standby mode)

0.5

µs

Standby mode

tWAKE

Delay Standby



to Normal Mode

µs

Negative edge on STBY

tPDT

Permanent Dominant Detect Time

—

1.25

—

TXD = 0V

tPDTR

Permanent Dominant Timer Reset

—

100

—

The shortest Recessive

pulse on TXD or CAN bus

to reset Permanent

Dominant Timer

Note 1: Characterized, not 100% tested.

VDD/2

VSS

RL = 464



CL = 50 pF

for all digital pins

Load Condition 1

Load Condition 2

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