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參數資料
| 型號： | SNJ54HCT574FK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發器 |
| 英文描述： | HCT SERIES, 8-BIT DRIVER, TRUE OUTPUT, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數： | 1/15頁 |
| 文件大?。?/td> | 563K |
| 代理商： | SNJ54HCT574FK |
SN54HCT574, SN74HCT574
OCTAL EDGETRIGGERED DTYPE FLIPFLOPS
WITH 3STATE OUTPUTS
SCLS177E MARCH 1984 REVISED AUGUST 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Operating Voltage Range of 4.5 V to 5.5 V
D High-Current 3-State Noninverting Outputs
Drive Bus Lines Directly or Up To 15 LSTTL
Loads
D Low Power Consumption, 80-A Max ICC
D Typical tpd = 22 ns
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 A Max
D Inputs Are TTL-Voltage Compatible
D Bus-Structured Pinout
description/ordering information
These octal edge-triggered D-type flip-flops
feature 3-state outputs designed specifically for
bus driving. The ’HCT574 devices are particularly
suitable for implementing buffer registers, I/O
ports, bidirectional bus drivers, and working
registers.
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input.
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
increased drive provide the capability to drive bus
lines without interface or pullup components.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube of 20
SN74HCT574N
SOIC DW
Tube of 25
SN74HCT574DW
HCT574
SOIC DW
Reel of 2000
SN74HCT574DWR
HCT574
40
°C to 85°C
SOP NS
Reel of 2000
SN74HCT574NSR
HCT574
40
°C to 85°C
SSOP DB
Reel of 2000
SN74HCT574DBR
HT574
Tube of 70
SN74HCT574PW
TSSOP PW
Reel of 2000
SN74HCT574PWR
HT574
TSSOP PW
Reel of 250
SN74HCT574PWT
HT574
CDIP J
Tube of 20
SNJ54HCT574J
55
°C to 125°C
CFP W
Tube of 85
SNJ54HCT574W
55 C to 125 C
LCCC FK
Tube of 55
SNJ54HCT574FK
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
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.
32 1 20 19
910 11 1213
4
5
6
7
8
18
17
16
15
14
2Q
3Q
4Q
5Q
6Q
3D
4D
5D
6D
7D
2D
1D
OE
8Q
7Q
V
1Q
8D
GND
CLK
SN54HCT574 . . . FK PACKAGE
(TOP VIEW)
CC
SN54HCT574 ...J OR W PACKAGE
SN74HCT574 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1D
2D
3D
4D
5D
6D
7D
8D
GND
VCC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
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