74ACT16475 Datasheet, PDF (1/8 Pages) Texas Instruments – 18-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS

54ACT16475, 74ACT16475
18ĆBIT REGISTERED TRANSCEIVERS
WITH 3ĆSTATE OUTPUTS
SCAS198A − OCTOBER 1990 − REVISED APRIL 1996
D Members of the Texas Instruments
Widebus Family
D Inputs Are TTL-Voltage Compatible
D 3-State Inverting Outputs
D Flow-Through Architecture Optimizes
PCB Layout
D Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Packaged in Plastic 300-mil Shrink
Small-Outline (DL) Packages Using 25-mil
Center-to-Center Pin Spacings and 380-mil
Fine-Pitch Ceramic Flat (WD) Packages
Using 25-mil Center-to-Center Pin Spacings
description
The ’ACT16475 are 18-bit registered transceivers
that contain two sets of D-type flip-flops for
temporary storage of data flowing in either
direction. They can be used as two 9-bit
transceivers or one 18-bit transceiver. Separate
clock (CLKAB and CLKBA) and output-enable
(OEAB or OEBA) inputs are provided for each
register to permit independent control in either
direction of data flow.
Data at the A inputs meeting the setup time
requirements is transferred to the B outputs on the
positive-going edge of CLKAB. With OEAB low,
the 3-state B outputs are enabled and reflect the
inverted A data. Data flow from B to A is similar but
requires the use of the CLKBA and OEBA inputs.
54ACT16475 . . . WD PACKAGE
74ACT16475 . . . DL PACKAGE
(TOP VIEW)
1OEAB ₁
1CLKAB ₂
1A1 ₃
GND ₄
1A2 ₅
1A3 ₆
V_{CC 7}
1A4 ₈
1A5 ₉
1A6 ₁₀
GND ₁₁
1A7 ₁₂
1A8 ₁₃
1A9 ₁₄
2A1 ₁₅
2A2 ₁₆
2A3 ₁₇
GND ₁₈
2A4 ₁₉
2A5 ₂₀
2A6 ₂₁
V_{CC 22}
2A7 23
2A8 24
GND 25
2A9 26
2CLKAB 27
2OEAB 28
56 ^1OEBA
55 ^1CLKBA
54 ^1B1
53 ^GND
52 ^1B2
51 ^1B3
50 ^V_CC
49 ^1B4
48 ^1B5
47 ^1B6
46 ^GND
45 ^1B7
44 ^1B8
43 ^1B9
42 ^2B1
41 ^2B2
40 ^2B3
39 ^GND
38 ^2B4
37 ^2B5
36 ^2B6
35 ^V_CC
34 2B7
33 2B8
32 GND
31 2B9
30 2CLKBA
29 2OEBA
The 74ACT16475 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and
functionality of standard small-outline packages in the same printed-circuit-board area.
The 54ACT16475 is characterized for operation over the full military temperature range of −55°C to 125°C. The
74ACT16475 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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• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
Copyright  1996, Texas Instruments Incorporated
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