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參數(shù)資料
| 型號： | SN74LS273W |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | OCTAL D-TYPE FLIP-FLOP WITH CLEAR |
| 中文描述： | 八路D型倒裝，沒有明確的浮點(diǎn)運(yùn)算 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 117K |
| 代理商： | SN74LS273W |
SN74LS273
http://onsemi.com
3
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)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
V
IH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
V
IL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
V
IK
Input Clamp Diode Voltage
–0.65
–1.5
V
V
CC
= MIN, I
IN
= –18 mA
V
OH
Output HIGH Voltage
2.7
3.5
V
V
CC
= MIN, I
OH
= MAX, V
IN
= V
IH
or V
IL
per Truth Table
V
OL
Output LOW Voltage
0.25
0.4
V
I
OL
= 4.0 mA
V
CC
= V
CC
MIN,
V
IN
= V
IL
or V
IH
per Truth Table
0.35
0.5
V
I
OL
= 8.0 mA
I
IH
Input HIGH Current
20
μ
A
V
CC
= MAX, V
IN
= 2.7 V
0.1
mA
V
CC
= MAX, V
IN
= 7.0 V
I
IL
Input LOW Current
–0.4
mA
V
CC
= MAX, V
IN
= 0.4 V
I
OS
Short Circuit Current (Note 1)
–20
–100
mA
V
CC
= MAX
I
CC
Power Supply Current
27
mA
V
CC
= MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
(T
A
= 25
°
C, V
CC
= 5.0 V)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
f
MAX
Maximum Input Clock Frequency
30
40
MHz
Figure 1
t
PHL
Propagation Delay, MR to Q Output
18
27
ns
Figure 2
t
PLH
t
PHL
Propagation Delay, Clock to Output
17
18
27
27
ns
Figure 1
AC SETUP REQUIREMENTS
(T
A
= 25
°
C, V
CC
= 5.0 V)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
t
w
Pulse Width, Clock or Clear
20
ns
Figure 1
t
s
Data Setup Time
20
ns
Figure 1
t
h
Hold Time
5.0
ns
Figure 1
t
rec
Recovery Time
25
ns
Figure 2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN74LS273DW | LOW POWER SCHOTTKY |
| SN74LS273N | LOW POWER SCHOTTKY |
| SN74LS273DW | OCTAL D FLIP-FLOP WITH CLEAR |
| SN74LS273N | OCTAL D FLIP-FLOP WITH CLEAR |
| SN74LS280 | LOW POWER SCHOTTKY |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74LS275D | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS275N | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS279 WAF | 制造商:ON Semiconductor 功能描述: |
| SN74LS279AD | 功能描述:閉鎖 Quad /S-/R RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
| SN74LS279ADE4 | 功能描述:閉鎖 QUAD /S-/R LATCHES RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
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