74AC16472 Datasheet, PDF (1/8 Pages) Texas Instruments – 18-BIT REGISTERED TRANS CIEVERS WITH 3-STATE OUTPUTS

54AC16472, 74AC16472
18ĆBIT REGISTERED TRANSCIEVERS
WITH 3ĆSTATE OUTPUTS
SCAS165A − JUNE 1990 − REVISED APRIL 1996
D Members of the Texas Instruments
Widebus  Family
D 3-State True Outputs
54AC16472 . . . WD PACKAGE
74AC16472 . . . DL PACKAGE
(TOP VIEW)
D Flow-Through Architecture Optimizes
PCB Layout
D Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
1OEAB 1
1LEAB 2
1A1 3
GND 4
56 1OEBA
55 1LEBA
54 1B1
53 GND
D EPIC  (Enhanced-Performance Implanted
CMOS) 1-µm Process
1A2 5
1A3 6
52 1B2
51 1B3
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) Package Using
25-mil Center-to-Center Pin Spacings and
380-mil Fine-Pitch Ceramic Flat (WD)
Package Using 25-mil Center-to-Center Pin
Spacings
V_CC 7
1A4 8
1A5 9
1A6 10
GND 11
1A7 12
1A8 13
1A9 14
2A1 15
50 V_CC
49 1B4
48 1B5
47 1B6
46 GND
45 1B7
44 1B8
43 1B9
42 2B1
description
2A2 16
2A3 17
41 2B2
40 2B3
The ’AC16472 are 18-bit registered transceivers
that contain two sets of D-type latches for
temporary storage of data flowing in either
direction. They can be used as two 9-bit
transceivers or one 18-bit transceiver. Separate
latch-enable (LEAB or LEBA) and output-enable
(OEAB or OEBA) inputs are provided for each
register to permit independent control in either
direction of data flow.
GND 18
2A4 19
2A5 20
2A6 21
V_CC 22
2A7 23
2A8 24
GND 25
2A9 26
39 GND
38 2B4
37 2B5
36 2B6
35 V_CC
34 2B7
33 2B8
32 GND
31 2B9
When OEAB and LEAB are both low, the A-to-B
latches are transparent; a subsequent low-to-high
2LEAB 27
2OEAB 28
30 2LEBA
29 2OEBA
transition of LEAB puts the A latches in the
storage mode. With OEAB low, the B outputs are active and reflect the data present at the output of the A latches.
Data flow from B to A is similar, but requires the use of the LEBA and OEBA inputs.
The 74AC16472 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 54AC16472 is characterized for operation over the full military temperature range of −55°C to 125°C. The
74AC16472 is characterized for operation from −40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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  1996, Texas Instruments Incorporated
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