STA400A datasheet(115/117 Pages) STMICROELECTRONICS

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STA400A

9.2) Output Buffer Drive Characterictics (Guaranteed by Design)

Figure 18. Slew Rate Load Circuit

1) See PIN DESCRIPTION.

2) Load Circuit: see fig.17.

3) The Current Slew Rate values are the mean values between currents in Vdd=3.3V and GND power lines

for one buffer.

4) Typical Peak Current in GND: 24mA.

5) Typical Peak Current in GND: 50mA.

6) Temperature 25 °C, Vdd=3.3V.

Symbol

Parameter

Buffer

Codition

Min

Typ

Max

Unit

RVSR

Rise Voltage Slew Rate

2mA Driver 1)

With Load 2)

0.8

1.2

1.9

V/ns

No Load)

4.0

6.1

8.3

V/ns

FVSR

Fall Voltage Slew Rate

2mA Driver

With Load 2)

0.8

1.2

1.9

V/ns

No Load

3.6

5.3

7.9

V/ns

RVSR

Rise Voltage Slew Rate

4mA Driver 1)

With Load 2)

1.1

1.8

2.8

V/ns

No Load

4.6

6.8

9.6

V/ns

FVSR

Fall Voltage Slew Rate

4mA Driver

With Load 2)

1.2

1.8

2.6

V/ns

No Load

3.8

5.4

9.2

V/ns

CSR 3)

Current Slew Rate

2mA Driver 4)

35pF load 6)

8.0

mA/ns

4mA Driver 5)

35pF load 6)

6.0

mA/ns

10pF

1 KOhm

Vdd3

0.2*Vdd3

0.6*Vdd3

RVSR=Vr/tr

FVSR=Vf/tf

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