MAX7300 Ver la hoja de datos (PDF) - Maxim Integrated

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MAX7300

2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander

Maxim Integrated 

2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or

28-Port I/O Expander

TIMING CHARACTERISTICS (Figure 2) (continued)

(VV+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)

Note 1: All parameters tested at TA = +25°C. Specifications over temperature are guaranteed by design.

Note 2: Guaranteed by design.

Note 3: A master device must provide a hold time of at least 300ns for the SDA signal (referred to VIL of the SCL signal) in order to

bridge the undefined region of SCL’s falling edge.

Note 4: Cb = total capacitance of one bus line in pF. tR and tF measured between 0.3V+ and 0.7V+.

Note 5: ISINK ≤ 6mA. Cb = total capacitance of one bus line in pF. tR and tF measured between 0.3V+ and 0.7V+.

Note 6: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.

__________________________________________Typical Operating Characteristics

(RISET = 39kΩ, TA = +25°C, unless otherwise noted.)

OPERATING SUPPLY CURRENT

vs. TEMPERATURE

0.40

0.36

VV+ = 2.5V TO 5.5V

NO LOAD

0.32

0.28 ALL PORTS

0.24 OUTPUT (1)

ALL PORTS

OUTPUT (0)

0.20

0.16

0.12

0.08

0.04

ALL PORTS INPUT HIGH

0

-40.0 -12.5 15.0 42.5 70.0

TEMPERATURE (°C)

97.5 125.0

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

8

VV+ = 5.5V

7

VV+ = 3.3V

6

5

VV+ = 2.5V

4

3

-40.0 -12.5

15.0 42.5 70.0

TEMPERATURE (°C)

97.5 125.0

OPERATING SUPPLY CURRENT vs. V+

(OUTPUTS UNLOADED)

1

ALL PORTS OUTPUT (1)

ALL PORTS OUTPUT (0)

ALL PORTS INPUT

(PULLUPS DISABLED)

0.1

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V+ (V)

4 _______________________________________________________________________________________

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