74AC16623 Datasheet, PDF (1/7 Pages) Texas Instruments – 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

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74AC16623
16ĆBIT BUS TRANSCEIVER
WITH 3ĆSTATE OUTPUTS
SCAS172 − D3680, JANUARY 1991 − REVISED APRIL 1993
• Member of the Texas Instruments
Widebus  Family
• Packaged in Plastic 300-mil Shrink
Small-Outline Package Using 25-mil
Center-to-Center Pin Spacings
• Flow-Through Architecture Optimizes
PCB Layout
• Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
• EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
• 500-mA Typical Latch-Up Immunity
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.
DL PACKAGE
(TOP VIEW)
1OEAB 1
1B1 2
1B2 3
GND 4
1B3 5
1B4 6
V_CC 7
1B5 8
1B6 9
GND 10
1B7 11
1B8 12
2B1 13
2B2 14
GND 15
2B3 16
2B4 17
V_CC 18
2B5 19
2B6 20
GND 21
2B7 22
2B8 23
2OEAB 24
48 1OEBA
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 V_CC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2OEBA
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
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
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
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.
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Copyright  1993, Texas Instruments Incorporated
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