SN74AVCH16T245 参数 Datasheet PDF下载

SN74AVCH16T245

16 BIT DUAL SUPPLY BUS TRANSCEIVER

WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS

SCES587A − AUGUST 2004 − REVISED OCTOBER 2004

operating characteristics, T

A

= 25°C

PARAMETER

Outputs

enabled

A to B

CpdA†

B to A

Outputs

disabled

Outputs

enabled

Outputs

disabled

Outputs

enabled

A to B

CpdB†

B to A

Outputs

disabled

Outputs

enabled

Outputs

disabled

CL = 0,

f = 10 MHz,

tr = tf = 1 ns

CL = 0,

f = 10 MHz,

tr = tf = 1 ns

TEST

CONDITIONS

VCCA =

VCCB = 1.2 V

TYP

1

1

13

1

13

1

1

1

VCCA =

VCCB = 1.5 V

TYP

1

1

13

1

13

1

1

1

VCCA =

VCCB = 1.8 V

TYP

1

1

14

1

14

1

1

1

VCCA =

VCCB = 2.5 V

TYP

1

1

15

1

15

1

1

1

VCCA =

VCCB = 3.3 V

TYP

2

1

pF

16

1

16

1

pF

2

1

UNIT

† Power-dissipation capacitance per transceiver

power-up considerations

A proper power-up sequence always should be followed to avoid excessive supply current, bus contention,

oscillations, or other anomalies. To guard against such power-up problems, take the following precautions:

1. Connect ground before any supply voltage is applied.

2. Power up V

CCA

.

3. V

CCB

can be ramped up along with or after V

CCA

.

typical total static power consumption (I

CCA

+ I

CCB

)

Table 1

VCCB

0V

1.2 V

1.5 V

1.8 V

2.5 V

3.3 V

VCCA

0V

0

<0.5

<0.5

<0.5

<0.5

<0.5

1.2 V

<0.5

<1

<1

<1

1

1

1.5 V

<0.5

<1

<1

<1

<1

<1

1.8 V

<0.5

<1

<1

<1

<1

<1

2.5 V

<0.5

<1

<1

<1

<1

<1

3.3 V

<0.5

1

1

<1

<1

<1

µA

A

UNIT

POST OFFICE BOX 655303

•

DALLAS, TEXAS 75265

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