전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

74F257ASC 데이터시트(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 74F257ASC
상세설명  Quad 2-Input Multiplexer with TRI-STATE Outputs
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

74F257ASC 데이터시트(HTML) 2 Page - National Semiconductor (TI)

  74F257ASC Datasheet HTML 1Page - National Semiconductor (TI) 74F257ASC Datasheet HTML 2Page - National Semiconductor (TI) 74F257ASC Datasheet HTML 3Page - National Semiconductor (TI) 74F257ASC Datasheet HTML 4Page - National Semiconductor (TI) 74F257ASC Datasheet HTML 5Page - National Semiconductor (TI) 74F257ASC Datasheet HTML 6Page - National Semiconductor (TI) 74F257ASC Datasheet HTML 7Page - National Semiconductor (TI) 74F257ASC Datasheet HTML 8Page - National Semiconductor (TI)  
Zoom Inzoom in Zoom Outzoom out
 2 / 8 page
background image
Unit LoadingFan Out
54F74F
Pin Names
Description
UL
Input IIH IIL
HIGHLOW
Output IOH IOL
S
Common Data Select Input
1010
20 mA b06 mA
OE
TRI-STATE Output Enable Input (Active LOW)
1010
20 mA b06 mA
I0a–I0d
Data Inputs from Source 0
1010
20 mA b06 mA
I1a–I1d
Data Inputs from Source 1
1010
20 mA b06 mA
Za–Zd
TRI-STATE Multiplexer Outputs
15040 (333)
b
3 mA24 mA (20 mA)
Functional Description
The ’F257A is a quad 2-input multiplexer with TRI-STATE
outputs It selects four bits of data from two sources under
control of a Common Data Select input When the Select
input is LOW the I0x inputs are selected and when Select is
HIGH the I1x inputs are selected The data on the selected
inputs appears at the outputs in true (non-inverted) form
The device is the logic implementation of a 4-pole 2-posi-
tion switch where the position of the switch is determined by
the logic levels supplied to the Select input The logic equa-
tion for the outputs is shown below
Zn e OE  (In  S a Ion  S)
When the Output Enable input (OE) is HIGH the outputs are
forced to a high impedance OFF state If the outputs are
tied together all but one device must be in the high imped-
ance state to avoid high currents that would exceed the
maximum ratings Designers should ensure the Output En-
able signals to TRI-STATE devices whose outputs are tied
together are designed so there is no overlap
Truth Table
Output
Select
Data
Output
Enable
Input
Inputs
OE
SI0
I1
Z
HX
X
X
Z
LH
X
L
L
LH
X
H
H
LL
L
X
L
LL
H
X
H
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Z e High Impedance
Logic Diagram
TLF9507 – 4
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays
2


유사한 부품 번호 - 74F257ASC

제조업체부품명데이터시트상세설명
logo
Fairchild Semiconductor
74F257ASC FAIRCHILD-74F257ASC Datasheet
79Kb / 7P
   Quad 2-Input Multiplexer with 3-STATE Outputs
74F257ASCX FAIRCHILD-74F257ASCX Datasheet
80Kb / 7P
   Quad 2-Input Multiplexer with 3-STATE Outputs
More results

유사한 설명 - 74F257ASC

제조업체부품명데이터시트상세설명
logo
Texas Instruments
54AC257 TI1-54AC257 Datasheet
128Kb / 8P
[Old version datasheet]   Quad 2-Input Multiplexer with TRI-STATE Outputs
logo
National Semiconductor ...
MN54AC258-X NSC-MN54AC258-X Datasheet
17Kb / 7P
   Quad 2 Input Multiplexer With TRI - STATE Outputs
54AC258 NSC-54AC258 Datasheet
143Kb / 8P
   Quad 2-Input Multiplexer with TRI-STATE Outputs
54AC257 NSC-54AC257 Datasheet
120Kb / 8P
   Quad 2-Input Multiplexer with TRI-STATE Outputs
54F258ADM NSC-54F258ADM Datasheet
159Kb / 8P
   Quad 2-Input Multiplexer with TRI-STATE Outputs
logo
Texas Instruments
54AC258 TI1-54AC258 Datasheet
188Kb / 10P
[Old version datasheet]   Quad 2-Input Multiplexer with TRI-STATE Outputs
54F258A TI1-54F258A Datasheet
409Kb / 10P
[Old version datasheet]   54F258A 74F258A Quad 2-Input Multiplexer with TRI-STATE(RM) Outputs
logo
National Semiconductor ...
MN54AC251-X NSC-MN54AC251-X Datasheet
33Kb / 7P
   8-Input Multiplexer With TRI-STATE Outputs
logo
Fairchild Semiconductor
74F258A FAIRCHILD-74F258A Datasheet
56Kb / 6P
   Quad 2-Input Multiplexer with 3-STATE Outputs
logo
Texas Instruments
CD74AC257 TI-CD74AC257 Datasheet
39Kb / 8P
[Old version datasheet]   Quad 2-Input Multiplexer with Three-State Outputs
More results


Html Pages

1 2 3 4 5 6 7 8


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com