DS2745 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

DS2745

Low-Cost I2C Battery Monitor

Maxim Integrated 

Input Resistance, VIN

Input Logic High:

SCL, SDA, PIO

Input Logic Low:

SCL, SDA, PIO

Output Logic Low:

SDA, PIO

Pulldown Current: SCL,

SDA, PIO

Input Capacitance: SCL,

SDA

SLEEP Timeout

RIN

VIH

VIL

VOL

IPD

CBUS

tSLEEP

-20°C ≤ TA ≤ +70°C,

2.5V ≤ VDD ≤ 4.5V

(Note 1)

(Note 1)

IOL = 4mA (Note 1)

(Note 3)

DS2745 Low-Cost I2C Battery Monitor

±2

±3

15

M

1.5

V

0.6

V

0.4

V

0.25

A

50

pF

2.2

S

2-WIRE INTERFACE TIMING SPECIFICATIONS

(VDD = 2.5V to 4.5V, TA = -20C to +70C.)

PARAMETER

SYMBOL

CONDITIONS

SCL Clock Frequency

fSCL

(Note 6)

Bus Free Time Between a

STOP and START Condition

Hold Time (Repeated)

START Condition

tBUF

tHD:STA

(Note 7)

Low Period of SCL Clock

tLOW

High Period of SCL Clock

Setup Time for a Repeated

START Condition

Data Hold Time

tHIGH

tSU:STA

tHD:DAT

(Note 8, 9)

Data Setup Time

Rise Time of Both SDA and

SCL Signals

Fall Time of Both SDA and

SCL Signals

Setup Time for STOP

Condition

Spike Pulse Widths

Suppressed by Input Filter

Capacitive Load for Each

Bus

Line

SCL, SDA Input

Capacitance

tSU:DAT

tR

tF

tSU:STO

tSP

(Note 8)

(Note 10)

CB

(Note 11)

CBIN

MIN TYP

0

1.3

0.6

1.3

0.6

0.6

0

100

20 + 0.1CB

20 + 0.1CB

0.6

0

MAX

400

0.9

300

300

50

UNITS

KHz

µs

µs

µs

µs

µs

µs

ns

ns

ns

µs

ns

400

pF

60

pF

3 of 15

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