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SN54AC374 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. SN54AC374
Description  OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54AC374 Datasheet(HTML) 1 Page - Texas Instruments

   
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SN54AC374, SN74AC374
OCTAL DTYPE EDGETRIGGERED FLIPFLOPS
WITH 3STATE OUTPUTS
SCAS543E − OCTOBER 1995 - REVISED OCTOBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D 2-V to 6-V VCC Operation
D Inputs Accept Voltages to 6 V
D Max tpd of 9.5 ns at 5 V
D 3-State Noninverting Outputs Drive Bus
Lines Directly
D Full Parallel Access for Loading
description/ordering information
These 8-bit flip-flops feature 3-state outputs
designed specifically for driving highly capacitive
or relatively low-impedance loads. The devices
are particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
The eight flip-flops of the ’AC374 devices are
D-type edge-triggered flip-flops. On the positive
transition of the clock (CLK) input, the Q outputs
are set to the logic levels set up at the data (D)
inputs.
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state
(high
or
low
logic
levels)
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
the increased drive provide the capability to drive
bus lines in bus-organized systems without need
for interface or pullup components.
OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while
the outputs are in the high-impedance state.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube
SN74AC374N
SN74AC374N
SOIC − DW
Tube
SN74AC374DW
AC374
SOIC − DW
Tape and reel
SN74AC374DWR
AC374
−40
°C to 85°C
SOP − NS
Tape and reel
SN74AC374NSR
AC374
−40 C to 85 C
SSOP − DB
Tape and reel
SN74AC374DBR
AC374
TSSOP − PW
Tube
SN74AC374PW
AC374
TSSOP − PW
Tape and reel
SN74AC374PWR
AC374
CDIP − J
Tube
SNJ54AC374J
SNJ54AC374J
−55
°C to 125°C
CFP − W
Tube
SNJ54AC374W
SNJ54AC374W
−55 C to 125 C
LCCC − FK
Tube
SNJ54AC374FK
SNJ54AC374FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright
 2003, 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.
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.
1
2
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5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
SN54AC374 ...J OR W PACKAGE
SN74AC374 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
2D
2Q
3Q
3D
4D
SN54AC374...FK PACKAGE
(TOP VIEW)
8D
7D
7Q
6Q
6D
On products compliant to MILPRF38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.


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