SN74LVC16652

16-BIT BUS TRANSCEIVER AND REGISTER

WITH 3-STATE OUTPUTS

SCAS319B – NOVEMBER 1993 – REVISED JULY 1995

6

POST OFFICE BOX 655303

FUNCTION TABLE

INPUTS

DATA I/O†

OPERATION OR FUNCTION

OEAB

OEBA

CLKAB

CLKBA

SAB

SBA

A1 THRU A8

B1 THRU B8

OPERATION OR FUNCTION

L

H

H or L

H or L

X

X

Input

Input

Isolation

L

H

↑↑

X

X

Input

Input

Store A and B data

X

H

↑

H or L

X

X

Input

Unspecified‡

Store A, hold B

H

H

↑↑

X‡

X

Input

Output

Store A in both registers

L

X

H or L

↑

X

X

Unspecified‡

Input

Hold A, store B

L

L

↑↑

XX‡

Output

Input

Store B in both registers

L

L

X

X

X

L

Output

Input

Real-time B data to A bus

L

L

X

H or L

X

H

Output

Input

Stored B data to A bus

H

H

X

X

L

X

Input

Output

Real-time A data to B bus

H

H

H or L

X

H

X

Input

Output

Stored A data to B bus

H

L

H or L

H or L

H

H

Output

Output

Stored A data to B bus and

Stored B data to A bus

† The data output functions may be enabled or disabled by a variety of level combinations at the OEAB or OEBA inputs. Data input functions are

always enabled; i.e., data at the bus terminals is stored on every low-to-high transition on the clock inputs.

‡ Select control = L; clocks can occur simultaneously.

Select control = H; clocks must be staggered in order to load both registers.

– 0.5 V to 4.6 V

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

– 0.5 V to 4.6 V

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

I/O ports (see Notes 1 and 2)

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

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

– 50 mA

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

±50 mA

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

±50 mA

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

±100 mA

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

1 W

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

DL package

1.4 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.