74AC16623

16BIT BUS TRANSCEIVER

WITH 3STATE OUTPUTS

SCAS172 − D3680, JANUARY 1991 − REVISED APRIL 1993

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Copyright

3−1

Widebus

 Family

Small-Outline Package Using 25-mil

Center-to-Center Pin Spacings

PCB Layout

Minimizes High-Speed Switching Noise

CMOS) 1-

µm Process

at 125

°C

description

The 74AC16623 is a 16-bit transceiver designed

for asynchronous communication between data

buses. The control function implementation allows

for maximum flexibility in timing.

This device can be used as two 8-bit transceivers

or

one

16-bit

transceiver.

It

allows

data

transmission from the A bus to the B bus or from

the B bus to the A bus, depending upon the logic

level at the output-enable (OEBA and OEAB)

inputs. The output-enable inputs can be used to

disable the device so that the buses are effectively

isolated.

The dual-enable configuration gives the bus transceiver the capability to store data by simultaneous enabling

of OEBA and OEAB. Each output reinforces its input in this transceiver configuration. Thus, when both control

inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, the bus lines

will remain at their last states.

The 74AC16623 is packaged in TI’s shrink small-outline package (DL), which provides twice the I/O pin count

and functionality of standard small-outline packages in the same printed-circuit-board area.

The 74AC16623 is characterized for operation from − 40

°C to 85°C.

FUNCTION TABLE

(each 8-bit section)

INPUTS

OPERATION

OEBA

OEAB

OPERATION

L

L

B data to A bus

H

H

A data to B bus

H

L

Isolation

L

H

B data to A bus,

A data to B bus

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

EPIC and Widebus are trademarks of Texas Instruments Incorporated.

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1OEAB

1B1

1B2

GND

1B3

1B4

1B5

1B6

GND

1B7

1B8

2B1

2B2

GND

2B3

2B4

2B5

2B6

GND

2B7

2B8

2OEAB

1OEBA

1A1

1A2

GND

1A3

1A4

1A5

1A6

GND

1A7

1A8

2A1

2A2

GND

2A3

2A4

2A5

2A6

GND

2A7

2A8

2OEBA

DL PACKAGE

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