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부품번호 | KK74ACT251 기능 |
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기능 | 8-Input Data Selector/Multiplexer | ||
제조업체 | KODENSHI KOREA | ||
로고 | |||
TECHNICAL DATA
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8-Input Data Selector/Multiplexer
with 3-State Outputs
High-Speed Silicon-Gate CMOS
KK74ACT251
The KK74ACT251 is identical in pinout to the LS/ALS251,
HC/HCT251. The KK74ACT251 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The device selects one of the eight binary Data Inputs, as determined
by the Address Inputs. The Output Enable pin must be at a low level for
the selected data to appear at the outputs. If Output Enable is high, the Y
and the Y outputs are in the high-impedance state. This 3-State feature
allows the KK74ACT251 to be used in bus-oriented systems.
• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 µA; 0.1 µA @ 25°C
• Outputs Source/Sink 24 mA
ORDERING INFORMATION
KK74ACT251N Plastic
KK74ACT251D SOIC
TA = -40° to 85° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 16 =VCC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
A2 A1 A0 Output Y
Enable
Y
XX X H Z Z
LL L
L D0 D0
LL H
L D1 D1
LH L
L D2 D2
LH H
L D3 D3
HL L
L D4 D4
HL H
L D5 D5
HH L
L D6 D6
HH H
L D7 D7
D0,D1...D7=the level of the respective D
input
Z = high-impedance state
X = don’t care
1
KK74ACT251
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AC ELECTRICAL CHARACTERISTICS (VCC=5.0 V ± 10%, CL=50pF, Input tr=tf=3.0 ns)
Symbol
Parameter
tPLH Propagation Delay, Input A to
Output Y or Y (Figure 3)
tPHL Propagation Delay, Input A to
Output Y or Y (Figure 3)
tPLH Propagation Delay, Input D to
Output Y or Y (Figures 1,2)
tPHL Propagation Delay, Input D to
Output Y or Y (Figures 1,2)
tPZH Propagation Delay, Output Enable to
Output Y or Y (Figure 4)
tPZL Propagation Delay, Output Enable to
Output Y or Y (Figure 4)
tPHZ Propagation Delay, Output Enable to
Output Y or Y (Figure 4)
tPLZ Propagation Delay, Output Enable to
Output Y or Y (Figure 4)
CIN Maximum Input Capacitance
Guaranteed Limits
25 °C
-40°C to 85°C
Min Max Min Max
2.5 15.5 2.0 17.0
2.5 16.5 2.5 18.5
2.5 12.0 2.0 13.0
2.5 12.5 2.5 14.0
1.5 8.5 1.5 9.0
1.5 8.5 1.5 9.5
2.0 12.0 2.0 13.0
1.5 8.5 1.5 9.0
4.5 4.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
pF
CPD Power Dissipation Capacitance
Typical @25°C,VCC=5.0 V
70
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
4
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다운로드 | [ KK74ACT251.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
KK74ACT251 | 8-Input Data Selector/Multiplexer | KODENSHI KOREA |
KK74ACT253 | Dual 4-Input Data Selector/Multiplexer | KODENSHI KOREA |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |