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54ACT16474 数据表(PDF) 1 Page - Texas Instruments

部件名 54ACT16474
功能描述  18-BIT REGISTERED BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

54ACT16474 数据表(HTML) 1 Page - Texas Instruments

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54ACT16474, 74ACT16474
18BIT REGISTERED BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCAS238A − MAY 1992 − REVISED APRIL 1996
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
D Members of the Texas Instruments
Widebus
 Family
D Inputs Are TTL-Voltage Compatible
D 3-State Outputs Drive Bus Lines Directly
D Flow-Through Architecture Optimizes
PCB Layout
D Distributed VCC and GND Pin
Configurations Minimize High-Speed
Switching Noise
D EPIC (Enhanced-Performance Implanted
CMOS) 1-
µm Process
D 500-mA Typical Latch-Up Immunity at
125
°C
D Package Options Include 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 ’ACT16474 are noninverting 18-bit registered
bus transceivers composed of two 9-bit sections
with separate control signals. For either 9-bit
transceiver section, data flow in the A-to-B mode
is controlled by output-enable (1OEAB or 2OEAB)
and clock (1CLKAB or 2CLKAB) inputs. When
1OEAB or 2OEAB is low, the corresponding
outputs are active (high or low) and take on either
the current data on low-to-high transition of
1CLKAB or 2CLKAB or the previously stored data
if 1CLKAB or 2CLKAB is low.
When 1OEAB or 2OEAB is high, the corresponding outputs are in the high-impedance state. 1OEAB or 2OEAB
does not affect the operation on the internal registers. Previously stored data can be retained or new data can
be entered while the outputs are in the high-impedance state.
Data flow from B to A is similar, but uses 1OEBA and/or 2OEBA and 1CLKBA and/or 2CLKBA.
The 74ACT16474 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 54ACT16474 is characterized for operation over the full military temperature range of −55
°C to 125°C. The
74ACT16474 is characterized for operation from −40
°C to 85°C.
Copyright
 1996, 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.
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.
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1OEAB
1CLKAB
1A1
GND
1A2
1A3
VCC
1A4
1A5
1A6
GND
1A7
1A8
1A9
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC
2A7
2A8
GND
2A9
2CLKAB
2OEAB
1OEBA
1CLKBA
1B1
GND
1B2
1B3
VCC
1B4
1B5
1B6
GND
1B7
1B8
1B9
2B1
2B2
2B3
GND
2B4
2B5
2B6
VCC
2B7
2B8
GND
2B9
2CLKBA
2OEBA
54ACT16474 . . . WD PACKAGE
74ACT16474 . . . DL PACKAGE
(TOP VIEW)


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