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74LS279PCQR PDF预览

74LS279PCQR

更新时间: 2024-11-17 13:02:39
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 逻辑集成电路
页数 文件大小 规格书
4页 51K
描述
R-S Latch, 4-Func, 1-Bit, TTL, PDIP16,

74LS279PCQR 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete包装说明:DIP, DIP16,.3
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.83JESD-30 代码:R-PDIP-T16
JESD-609代码:e0逻辑集成电路类型:R-S LATCH
位数:1功能数量:4
端子数量:16最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP16,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):NOT SPECIFIED电源:5 V
子类别:FF/Latches标称供电电压 (Vsup):5 V
表面贴装:NO技术:TTL
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
Base Number Matches:1

74LS279PCQR 数据手册

 浏览型号74LS279PCQR的Datasheet PDF文件第2页浏览型号74LS279PCQR的Datasheet PDF文件第3页浏览型号74LS279PCQR的Datasheet PDF文件第4页 
August 1986  
Revised March 2000  
DM74LS279  
Quad S-R Latch  
General Description  
The DM74LS279 consists of four individual and indepen-  
dent Set-Reset Latches with active low inputs. Two of the  
four latches have an additional S input ANDed with the pri-  
mary S input. A LOW on any S input while the R input is  
HIGH will be stored in the latch and appear on the corre-  
sponding Q output as a HIGH. A LOW on the R input while  
the S input is HIGH will clear the Q output to a LOW. Simul-  
taneous transition of the R and S inputs from LOW-to-  
HIGH will cause the Q output to be indeterminate. Both  
inputs are voltage level triggered and are not affected by  
transition time of the input data.  
Ordering Code:  
Order Number Package Number  
Package Description  
DM74LS279M  
DM74LS279N  
M16A  
N16E  
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow  
16-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  
Function Table  
Inputs  
S (Note 1)  
Output  
R
L
Q
L
L
H (Note 2)  
H
L
H
L
H
H
H
Q0  
H = HIGH Level  
L = LOW Level  
Q
= The Level of Q before the indicated input conditions were established.  
0
Note 1: For latches with double S inputs:  
H = both S inputs HIGH  
L = one or both S inputs LOW  
Note 2: This output level is pseudo stable; that is, it may not persist when  
the S and R inputs return to their inactive (HIGH) level.  
© 2000 Fairchild Semiconductor Corporation  
DS006420  
www.fairchildsemi.com  

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