MB3U, MB3U-I2C

BiSS, SSI, PC-USB ADAPTER

Rev C3, Page 5/16

ELECTRICAL CHARACTERISTICS

Operating conditions: USB 2.0, port maximum 500 mA, Ta = 0..30 °C

Item

Symbol

Parameter

Conditions

Unit

No.

Min.

Typ.

Max.

Supply

001 Vusb

Supply Voltage

By USB port

4.5

5.0

5.5

V

002 Iusb

Current Consumption

From USB port

500

mA

003 Vext

Permissible External Supply

By wall adapter

9

12

15

V

Plug disconnects internal VB when plugged

004 VB

VB Supply Output

USB powered

9

12

13

V

005 VB

VB Supply Output

With wall adapter (Vext = 12 V, 500 mA)

Vext

V

006 I(VB)

Permissible VB Load Current

USB powered;

150

mA

load at VB of 9 pin BiSS/SSI connector;

no other load at 9 pin BiSS/SSI connector

(VDD, MA±, MO±);

no load at 10 pin pigtail SPI/I2C

007 I(VB)

Permissible VB Load Current

wall adapter (12 V, 500 mA) powered;

500

mA

load at VB of 9 pin BiSS/SSI connector;

no load at 9 pin BiSS/SSI connector (VDD,

MA±, MO±);

no load at 10 pin pigtail SPI/I2C

008 VDD

VDD Supply Output

At 10 pin pigtail SPI/I2C and 9 pin BiSS/SSI

4.5

5

5.5

V

009 I(VDD)

Permissible VDD Load Current

at 10 pin pigtail SPI/I2C

USB powered;

200

mA

load at VDD of 10 pin pigtail SPI/I2C;

no other load 10 pin pigtail SPI/I2C (MOSI,

SCL, NCS);

no load at 9 pin BiSS/SSI connector

010 I(VDD)

Permissible VDD Load Current

at 9 pin BiSS/SSI connector

USB powered;

150

mA

load at VDD of 9 pin BiSS/SSI connector;

no load at 9 pin BiSS/SSI connector (VDD,

MA±, MO±);

no load 10 pin pigtail SPI/I2C

011 I(VDD)

Permissible VDD Load Current

at 9 pin BiSS/SSI connector;

With wall adapter (12 V, 500 mA);

250

mA

load at VDD of 9 pin BiSS/SSI connector;

no load at 9 pin BiSS/SSI connector (VDD,

MA±, MO±);

no load 10 pin pigtail SPI/I2C

BiSS/SSI Communication Lines

101 Vout()

Diff. Clock Output at MA+, MA-

RL = 54Ω

1.1

2.2

5

V

(according to RS422 driver 65LBC179)

102 fclock()

Clock Frequency at MA+, MA-

iC-MB3 BiSS master oscillator

10

MHz

external oscillator

10

MHz

103 Vout()

Diff. Data Output at MO+, MO-

RL = 54Ω

1.1

2.2

5

V

(according to RS422 driver 65LBC179)

104 fdata()

Data Frequency at MO+, MO-

iC-MB3 BiSS master oscillator

10

MHz

external oscillator

10

MHz

105 VIT+()

Positive going input threshold

voltage at SL+ vs. SL-

according to RS422 (transceiver 65LBC179)

0.2

V

106 VIT-()

Negative going input threshold

voltage at SL+ vs. SL-

according to RS422 (transceiver 65LBC179)

-0.2

V

107 VHYST

Hysteresis voltage

according to RS422 (transceiver 65LBC179)

45

mV

108 Rin()

Input Termination at SL+ vs. SL-

120

Ω