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參數(shù)資料
| 型號： | SN54AS823AJT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | AS SERIES, 9-BIT DRIVER, TRUE OUTPUT, CDIP24 |
| 封裝： | 0.300 INCH, CERAMIC, DIP-24 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 339K |
| 代理商： | SN54AS823AJT |
SN54AS823A . . . JT PACKAGE
SN74AS823A . . . DW OR NT PACKAGE
(TOP VIEW)
SN54AS823A . . . FK PACKAGE
(TOP VIEW)
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OE
1D
2D
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4D
5D
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9D
CLR
GND
VCC
1Q
2Q
3Q
4Q
5Q
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CLKEN
CLK
NC – No internal connection
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9D
CLR
GND
NC
CLK
CLKEN
9Q
2D
1D
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NC
1Q
2Q
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C
SN74AS824A . . . DW OR NT PACKAGE
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GND
VCC
1Q
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CLK
SN54AS823A, SN74AS823A, SN74AS824A
9-BIT BUS-INTERFACE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SDAS231A – JUNE 1984 – REVISED AUGUST 1995
Copyright
1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Functionally Equivalent to AMD’s AM29823
and AM29824
Provide Extra Data Width Necessary for
Wider Address/Data Paths or Buses With
Parity
Outputs Have Undershoot-Protection
Circuitry
Power-Up High-Impedance State
Buffered Control Inputs to Reduce
dc Loading Effects
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic
(NT) and Ceramic (JT) 300-mil DIPs
description
These 9-bit flip-flops feature 3-state outputs
designed specifically for driving highly capacitive
or relatively low-impedance loads. These devices
are particularly suitable for implementing wider
buffer registers, I/O ports, bidirectional bus
drivers, parity bus interfacing, and working
registers.
With the clock-enable (CLKEN) input low, the nine
D-type edge-triggered flip-flops enter data on the
low-to-high transitions of the clock (CLK) input.
Taking CLKEN high disables the clock buffer,
latching the outputs. The SN54AS823A and
SN74AS823A have noninverting data (D) inputs
and the SN74AS824A has inverting (D) inputs.
Taking the clear (CLR) input low causes the nine
Q outputs to go low independently of the clock.
A buffered output-enable (OE) input can be used
to place the nine outputs in either a normal logic
state (high or low logic level) or the high-
impedance state. In the high-impedance state, the
outputs neither load nor drive the bus lines
significantly. The high-impedance state and
increased drive provide the capability to drive bus
lines without interface or pullup components.
OE does not affect the internal operation of the
flip-flops. Old data can be retained or new data
can be entered while the outputs are in the
high-impedance state.
The SN54AS823A is characterized for operation
over the full military temperature range of – 55
°C
to 125
°C. The SN74AS823A and SN74AS824A
are characterized for operation from 0
°C to 70°C.
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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