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부품번호 | 74LV251 기능 |
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기능 | 8-input multiplexer 3-State | ||
제조업체 | Philips | ||
로고 | |||
전체 12 페이지수
INTEGRATED CIRCUITS
74LV251
8-input multiplexer (3-State)
Product specification
Supersedes data of 1997 Apr 10
IC24 Data Handbook
1998 May 20
Philips
Semiconductors
Philips Semiconductors
8-input multiplexer (3-State)
Product specification
74LV251
FUNCTION TABLE
INPUTS
OUTPUTS
OE S2 S1 S0 I0 I1 I2 I3 I4 I5 I6 I7 Y Y
HXXXXXXXXXXX Z Z
L L L L LXXXXXXXHL
L L L LHXXXXXXXLH
L L LHXLXXXXXXHL
L L LHXHXXXXXXLH
L LHLXXLXXXXXHL
L LHLXXHXXXXXLH
L LHHXXX L XXXXHL
L LHHXXXHXXXX LH
LHL LXXXXLXXXHL
LHL LXXXXHXXXLH
L H L HXXXXX L XXH L
L H L HXXXXXHXX L H
LHHL XXXXXX L XHL
LHHL XXXXXXHX LH
LHHHXXXXXXX LHL
L HHHX X X X X X XH L H
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
VCC
VI
VO
Tamb
DC supply voltage
Input voltage
Output voltage
Operating ambient temperature range in free air
See Note 1
See DC and AC
characteristics
1.0 3.3 3.6
V
0 – VCC V
0 – VCC V
–40
–40
+85
+125
°C
tr, tf Input rise and fall times
VCC = 1.0V to 2.0V – – 500
VCC = 2.0V to 2.7V – – 200 ns/V
VCC = 2.7V to 3.6V – – 100
NOTE:
1. The LV is guaranteed to function down to VCC = 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC = 5.5V.
1998 May 20
4
4페이지 Philips Semiconductors
8-input multiplexer (3-State)
Product specification
74LV251
AC WAVEFORMS
VM = 1.5 V at VCC ≥ 2.7 V
VM = 0.5 V × VCC at VCC < 2.7 V
VOL and VOH are the typical output voltage drop that occur with the
output load.
VX = VOL + 0.3 V at VCC ≥ 2.7 V
VX = VOL + 0.1 × VCC at VCC < 2.7 V
VY = VOH – 0.3 V at VCC ≥ 2.7V
VY = VOH – 0.1 × VCC at VCC < 2.7 V
V CC
In , Sn INPUT
GND
V OH
tPHL
Y OUTPUT
VM
VM
tPLH
V OL
SV00633
Figure 1. Multiplexer input (In) and select input (Sn) to
output (Y) propagation delays.
V CC
In, Sn INPUT
GND
tPHL
V OH
Y OUTPUT
VM
VM
tPLH
V OL
SV00634
Figure 2. Multiplexer input (In) and the select input (Sn) to
output (Y) propagation delays.
VCC
OE INPUT
VM
GND
VCC
OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
tPLZ
VX
tPHZ
tPZL
VM
tPZH
VOH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
outputs
enabled
VY
outputs
disabled
VM
outputs
enabled
SV00635
Figure 3. 3-State enable and disable times
TEST CIRCUIT
VCC
PULSE
GENERATOR
VI
RT
D.U.T.
VO
50pF
CL
RL= 1KΩ
Test Circuit for switching times
DEFINITIONS
RT = Termination resistance should be equal to ZOUT of pulse generators.
RL = Load resistor
CL = Load capacitance includes jig and probe capacitance
TEST
tPLH/tPHL
VCC
< 2.7V
2.7–3.6V
VI
VCC
2.7V
SV00776
Figure 4. Load circuitry for switching times.
1998 May 20
7
7페이지 | |||
구 성 | 총 12 페이지수 | ||
다운로드 | [ 74LV251.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 |
74LV251 | 8-input multiplexer 3-State | Philips |
74LV257 | Quad 2-input multiplexer 3-State | Philips |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |