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| 型号： | HCT273 |
| 厂商： | ON SEMICONDUCTOR |
| 英文描述： | Octal D Flip-Flop with Common Clock and Reset with LSTTL-Compatible Inputs |
| 中文描述： | 八路D触发器与普通时钟和复位触发器的输入通道兼容输入 |
| 文件页数： | 1/8页 |
| 文件大小： | 152K |
| 代理商： | HCT273 |
Semiconductor Components Industries, LLC, 2000
March, 2000 – Rev. 8
1
Publication Order Number:
MC74HCT273A/D
MC74HCT273A
Octal D Flip-Flop with
Common Clock and Reset
with LSTTL-Compatible
Inputs
High–Performance Silicon–Gate CMOS
The MC74HCT273A may be used as a level converter for
interfacing TTL or NMOS outputs to High–Speed CMOS inputs.
The HCT273A is identical in pinout to the LS273.
This device consists of eight D flip–flops with common Clock and
Reset inputs. Each flip–flop is loaded with a low–to–high transition of
the Clock input. Reset is asynchronous and active low.
Output Drive Capability: 10 LSTTL Loads
TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0 A
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 284 FETs or 71 Equivalent Gates
LOGIC DIAGRAM
DATA
INPUTS
D0
11
CLOCK
D1
D2
D3
D4
D5
D6
D7
18
17
14
13
8
7
4
3
1
RESET
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
16
15
12
9
6
5
2
PIN 20 = VCC
PIN 10 = GND
NONINVERTING
OUTPUTS
FUNCTION TABLE
Inputs
Output
Reset
Clock
D
Q
LX
X
L
HH
H
HL
L
H
L
X
No Change
H
X
No Change
X = Don’t Care
Z = High Impedance
http://onsemi.com
MARKING
DIAGRAMS
1
20
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
SOIC WIDE–20
DW SUFFIX
CASE 751D
HCT273A
AWLYYWW
PDIP–20
N SUFFIX
CASE 738
1
20
MC74HCT273AN
AWLYYWW
1
20
1
20
Device
Package
Shipping
ORDERING INFORMATION
MC74HCT273AN
PDIP–20
1440 / Box
MC74HCT273ADW
SOIC–WIDE
38 / Rail
MC74HCT273ADWR2 SOIC–WIDE
1000 / Reel
PIN ASSIGNMENT
Q2
D1
D0
Q0
RESET
GND
Q3
D3
D2
Q1
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
11
12
13
Q6
D6
D7
Q7
VCC
CLOCK
Q4
D4
D5
Q5
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