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参数资料
| 型号： | SN74LS273M |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 锁存器 |
| 英文描述： | LS SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO20 |
| 封装： | EIAJ, SOIC-20 |
| 文件页数： | 4/8页 |
| 文件大小： | 226K |
| 代理商： | SN74LS273M |
SN74LS273
http://onsemi.com
4
FUNCTIONAL DESCRIPTION
The SN74LS273 is an 8-Bit Parallel Register with a
common Clock and common Master Reset.
When the MR input is LOW, the Q outputs are LOW,
independent of the other inputs. Information meeting the
setup and hold time requirements of the D inputs is
transferred to the Q outputs on the LOW-to-HIGH transition
of the clock input.
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
0.65
1.5
V
VCC = MIN, IIN = 18 mA
VOH
Output HIGH Voltage
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VOL
Output LOW Voltage
0.25
0.4
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
0.35
0.5
V
IOL = 8.0 mA
IIH
Input HIGH Current
20
μA
VCC = MAX, VIN = 2.7 V
0.1
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
0.4
mA
VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 2)
20
100
mA
VCC = MAX
ICC
Power Supply Current
27
mA
VCC = MAX
2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
fMAX
Maximum Input Clock Frequency
30
40
MHz
Figure 1
tPHL
Propagation Delay, MR to Q Output
18
27
ns
Figure 2
tPLH
tPHL
Propagation Delay, Clock to Output
17
18
27
ns
Figure 1
AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
tw
Pulse Width, Clock or Clear
20
ns
Figure 1
ts
Data Setup Time
20
ns
Figure 1
th
Hold Time
5.0
ns
Figure 1
trec
Recovery Time
25
ns
Figure 2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74LS273MR1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS273N | 功能描述:触发器 Octal RoHS:否 制造商:Texas Instruments 电路数量:2 逻辑系列:SN74 逻辑类型:D-Type Flip-Flop 极性:Inverting, Non-Inverting 输入类型:CMOS 输出类型: 传播延迟时间:4.4 ns 高电平输出电流:- 16 mA 低电平输出电流:16 mA 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:X2SON-8 封装:Reel |
| SN74LS273N | 制造商:Texas Instruments 功能描述:Flip Flop Logic IC |
| SN74LS273N3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS273NE4 | 功能描述:触发器 Octal D-Type Flip-Flop w/Clear RoHS:否 制造商:Texas Instruments 电路数量:2 逻辑系列:SN74 逻辑类型:D-Type Flip-Flop 极性:Inverting, Non-Inverting 输入类型:CMOS 输出类型: 传播延迟时间:4.4 ns 高电平输出电流:- 16 mA 低电平输出电流:16 mA 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:X2SON-8 封装:Reel |
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