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부품번호 DM74ALS574A 기능
기능 Octal D-Type Edge-Triggered Flip-Flop with 3-STATE Outputs
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DM74ALS574A 데이터시트, 핀배열, 회로
September 1986
Revised February 2000
DM74ALS574A
Octal D-Type Edge-Triggered Flip-Flop
with 3-STATE Outputs
General Description
These 8-bit registers feature totem-pole 3-STATE outputs
designed specifically for driving highly-capacitive or rela-
tively low-impedance loads. The high-impedance state and
increased high-logic-level drive provide these registers with
the capability of being connected directly to and driving the
bus lines in a bus-organized system without need for inter-
face or pull-up components. They are particularly attractive
for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers.
The eight flip-flops of the DM74ALS574A are edge-trig-
gered D-type flip-flops. On the positive transition of the
clock, the Q outputs will be set to the logic states that were
set up at the D inputs.
A buffered output control input can be used to place the
eight outputs in either a normal logic state (HIGH or LOW
logic levels) or a high-impedance state. In the high-imped-
ance state the outputs neither load nor drive the bus lines
significantly.
The output control does not affect the internal operation of
the flip-flops. That is, the old data can be retained or new
data can be entered even while the outputs are OFF.
Features
s Switching specifications at 50 pF
s Switching specifications guaranteed over full tempera-
ture and VCC range
s Advanced oxide-isolated, ion-implanted Schottky TTL
process
s Functionally equivalent with DM74LS374
s Improved AC performance over DM74LS374 at approxi-
mately half the power
s 3-STATE buffer-type outputs drive bus lines directly
Ordering Code:
Order Number Package Number
Package Description
DM74ALS574AWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74ALS574ASJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74ALS574AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
© 2000 Fairchild Semiconductor Corporation DS006110
www.fairchildsemi.com




DM74ALS574A pdf, 반도체, 판매, 대치품
Switching Characteristics
over recommended operating free air temperature range
Symbol
Parameter
Conditions
fMAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Maximum Clock Frequency
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
Output Enable Time
to HIGH Level Output
Output Enable Time
to LOW Level Output
Output Disable Time
from HIGH Level Output
Output Disable Time
from LOW Level Output
VCC = 4.5V to 5.5V
RL = 500
CL = 50 pF
From
To
Clock
Clock
Output Control
Output Control
Output Control
Output Control
Any Q
Any Q
Any Q
Any Q
Any Q
Any Q
Min
Max
Units
35 MHz
4 14 ns
4 14 ns
4 18 ns
4 18 ns
2 10 ns
2 12 ns
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DM74ALS574A 전자부품, 판매, 대치품
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N20A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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관련 데이터시트

부품번호상세설명 및 기능제조사
DM74ALS574A

Octal D-Type Edge-Triggered Flip-Flop with 3-STATE Outputs

Fairchild Semiconductor
Fairchild Semiconductor

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