MCP2551ESLASHP datasheet(11/20 Pages) MICROCHIP

11 / 20 page

 2002 Microchip Technology Inc.

Preliminary

DS21667C-page 11

MCP2551

2.3

AC Characteristics

AC Specifications

Electrical Characteristics:

Industrial (I): TAMB = -40°C to +85°CVDD = 4.5V to 5.5V

Extended (E): TAMB = -40°C to +125°CVDD = 4.5V to 5.5V

Param

No.

Sym

Characteristic

Min

Max

Units

Conditions

1tBIT

Bit time

62.5

µs

VRS = 0V

2fBIT

Bit frequency

1000

kHz

VRS = 0V

TtxL2bus(d) Delay TXD to bus active

—

-40°C

≤ TAMB ≤ +125°C,

VRS = 0V

TtxH2bus(r)

Delay TXD to bus inactive

—

125

-40°C

≤ TAMB ≤ +85°C,

VRS = 0V

—

170

-40°C

≤ TAMB ≤ +125°C,

VRS = 0V

TtxL2rx(d)

Delay TXD to receive active

—

130

-40°C

≤ TAMB ≤ +125°C,

VRS = 0V

—

250

-40°C

≤ TAMB ≤ +125°C,

RS = 47 k

Ω

TtxH2rx(r)

Delay TXD to receiver

inactive

—

175

-40°C

≤ TAMB ≤ +85°C,

VRS = 0V

—

225

-40°C

≤ TAMB ≤ +85°C,

RS = 47 k

Ω

—

235

-40°C

≤ TAMB ≤ +125°C,

VRS = 0V

—

400

-40°C

≤ TAMB ≤ +125°C,

RS = 47 k

Ω

CANH, CANL slew rate

5.5

8.5

V/µs

Refer to Figure 1-1;

RS = 47 k

Ω, (Note 1)

tWAKE

Wake-up time from standby

(Rs pin)

—

µs

see Figure 2-6

TbusD2rx(s) Bus dominant to RXD Low

(standby mode)

—

550

VRS = +4V; (see Figure 2-7)

CIN(CANH)

CIN(CANL)

CANH; CANL input

capacitance

—20

(typical)

1 Mbit/s data rate;

VTXD = VDD, (Note 1)

CDIFF

Differential input

capacitance

—10

(typical)

1 Mbit/s data rate

(Note 1)

TtxL2busZ

TX Permanent Dominant

Timer Disable Time

1.25

TtxR2pdt(res) TX Permanent Dominant

Timer Reset Time

—

µs

Rising edge on TXD while

device is in permanent

dominant state

Note 1: This parameter is periodically sampled and not 100% tested.

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