SN74LVC646

OCTAL BUS TRANSCEIVER AND REGISTER

WITH 3-STATE OUTPUTS

SCAS302A – JANUARY 1993 – REVISED JULY 1995

5

POST OFFICE BOX 655303

– 0.5 V to 4.6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

– 0.5 V to 6.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I/O ports (see Notes 1 and 2)

. . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

– 50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±100 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0.65 W

. . . . . . . . . . . . . . . . .

DW package

1.7 W

. . . . . . . . . . . . . . . . .

PW package

0.7 W

. . . . . . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

2. This value is limited to 4.6 V maximum.

3. The maximum package power dissipation is calculated using a junction temperature of 150

°C and a board trace length of 750 mils.

For more information, refer to the

Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology

Data Book, literature number SCBD002B.

recommended operating conditions (see Note 3)

MIN

MAX

UNIT

VCC

Supply voltage

2.7

3.6

V

VIH

High-level input voltage

VCC = 2.7 V to 3.6 V

2

V

VIL

Low-level input voltage

VCC = 2.7 V to 3.6 V

0.8

V

VI

Input voltage

Control inputs

0

5.5

V

VI

Input voltage

Data inputs

0

VCC

V

VO

Output voltage

0

VCC

V

IOH

High level output current

VCC = 2.7 V

–12

mA

IOH

High-level output current

VCC = 3 V

–24

mA

IOL

Low level output current

VCC = 2.7 V

12

mA

IOL

Low-level output current

VCC = 3 V

24

mA

∆t/∆v

Input transition rise or fall rate

0

10

ns / V

TA

Operating free-air temperature

–40

85

°C

NOTE 4: Unused inputs must be held high or low to prevent them from floating.