DM74LS279

更新时间： 2024-11-05 23:00:43

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
4页	51K
描述
Quad S-R Latch

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数据手册

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DM74LS279 数据手册

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

H (Note 2)

Q₀

H = HIGH Level

L = LOW Level

= The Level of Q before the indicated input conditions were established.

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.

DS006420

www.fairchildsemi.com

12 3 4

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与DM74LS279相关器件

型号	品牌	获取价格	描述	数据表
DM74LS279J	NSC	获取价格	IC,LATCH,QUAD,1-BIT,LS-TTL,DIP,16PIN,CERAMIC
DM74LS279J/A+	NSC	获取价格	IC,LATCH,QUAD,1-BIT,LS-TTL,DIP,16PIN,CERAMIC
DM74LS279M	FAIRCHILD	获取价格	Quad S-R Latch
DM74LS279M	NSC	获取价格	Quad S-R Latches
DM74LS279MX	FAIRCHILD	获取价格	S-R-Type Latch
DM74LS279N	FAIRCHILD	获取价格	Quad S-R Latch
DM74LS279N	NSC	获取价格	Quad S-R Latches
DM74LS279N	ROCHESTER	获取价格	R-S Latch, LS Series, 4-Func, Low Level Triggered, 2-Bit, True Output, TTL, PDIP16, 0.300
DM74LS279N/A+	NSC	获取价格	IC,LATCH,QUAD,1-BIT,LS-TTL,DIP,16PIN,PLASTIC
DM74LS279N/B+	NSC	获取价格	IC,LATCH,QUAD,1-BIT,LS-TTL,DIP,16PIN,PLASTIC