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CD74HCT273

更新时间: 2024-11-19 23:04:31
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德州仪器 - TI 触发器
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8页 57K
描述
High Speed CMOS Logic Octal D-Type Flip-Flop with Reset

CD74HCT273 数据手册

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CD74HC273,  
CD74HCT273  
Data sheet acquired from Harris Semiconductor  
SCHS174  
High Speed CMOS Logic  
February 1998  
Octal D-Type Flip-Flop with Reset  
Features  
Description  
• Common Clock and Asynchronous Master Reset  
• Positive Edge Triggering  
• Buffered Inputs  
The Harris CD74HC273 and CD74HCT273 high speed octal  
D-Type flip-flops with a direct clear input are manufactured  
with silicon-gate CMOS technology. They possess the low  
power consumption of standard CMOS integrated circuits.  
[ /Title  
(CD74  
HC273  
,
CD74  
HCT27  
3)  
Information at the D inputis transferred to the Q outputs on  
the positive-going edge of the clock pulse. All eight flip-flops  
are controlled by a common clock (CP) and a common reset  
(MR). Resetting is accomplished by a low voltage level  
independent of the clock. All eight Q outputs are reset to a  
logic 0.  
• Typical f  
MAX  
= 60MHz at V = 5V, C = 15pF,  
CC L  
o
T = 25 C  
A
• Fanout (Over Temperature Range)  
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads  
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads  
o
o
/Sub-  
ject  
• Wide Operating Temperature Range . . . -55 C to 125 C  
• Balanced Propagation Delay and Transition Times  
Ordering Information  
TEMP. RANGE  
PKG.  
NO.  
(High  
Speed  
CMOS  
Logic  
Octal  
D-  
o
• Significant Power Reduction Compared to LSTTL  
Logic ICs  
PART NUMBER  
CD54HC273F  
CD54HCT273F  
CD74HC273E  
CD74HCT273E  
CD74HC273M  
CD74HCT273M  
NOTES:  
( C)  
PACKAGE  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
20 Ld CERDIP F20.3  
20 Ld CERDIP F20.3  
• HC Types  
- 2V to 6V Operation  
20 Ld PDIP  
20 Ld PDIP  
20 Ld SOIC  
20 Ld SOIC  
E20.3  
E20.3  
M20.3  
M20.3  
- High Noise Immunity: N = 30%, N = 30% of V  
CC  
IL  
IH  
at V  
= 5V  
CC  
• HCT Types  
- 4.5V to 5.5V Operation  
- Direct LSTTL Input Logic Compatibility,  
Type  
Flip-  
V = 0.8V (Max), V = 2V (Min)  
IL IH  
- CMOS Input Compatibility, I 1µA at V , V  
OL OH  
l
1. When ordering, use the entire part number. Add the suffix 96 to  
obtain the variant in the tape and reel.  
2. Wafer and die for this part number is available which meets all  
electrical specifications. Please contact your local sales office or  
Harris customer service for ordering information.  
Pinout  
CD54HC273, CD54HCT273, CD74HC273, CD74HCT273  
(PDIP, SOIC, CERDIP)  
TOP VIEW  
1
2
3
4
5
6
7
8
9
V
MR  
Q0  
D0  
D1  
Q1  
Q2  
D2  
D3  
Q3  
20  
19  
CC  
Q7  
18 D7  
17 D6  
16 Q6  
15  
14  
Q5  
D5  
13 D4  
12  
Q4  
11 CP  
GND 10  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
File Number 1479.2  
Copyright © Harris Corporation 1998  
1

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