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부품번호 | 74LV423 기능 |
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기능 | Dual retriggerable monostable multivibrator with reset | ||
제조업체 | Philips | ||
로고 | |||
INTEGRATED CIRCUITS
74LV423
Dual retriggerable monostable
multivibrator with reset
Product specification
IC24 Data Handbook
1997 Feb 04
Philips
Semiconductors
Philips Semiconductors
Dual retriggerable monostable multivibrator
with reset
LOGIC DIAGRAM
nREXT/CEXT
VCC
Preliminary specification
74LV423
RD
R
VCC
R
CL VCC
CL
CL
R
Q
Q
CL CL
A
B
It is recommended that Pin 6 (2CEXT) and Pin 14 (1CEXT) by externally grounded to Pin 8 (GND)
SV00163
FUNCTION TABLE
INPUTS
OUTPUTS
nRD
nA
nB
nQ
nQ
LXXLH
X H X L* H*
X X L L* H*
HL↑
H↓H
NOTES:
* If the monostable was triggered before this condition was
established, the pulse will continue as programmed.
H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH transition
↓ = HIGH-to-LOW transition
= one HIGH level output pulse
= one LOW level output pulse
VCC
REXT
CEXT
to nCEXT
(pin 14 or 6)
to nREXT/CEXT
(pin 15 or 7)
Figure 1. Timing Component Connection
SV00101
1997 Feb 04
4
4페이지 Philips Semiconductors
Dual retriggerable monostable multivibrator
with reset
Preliminary specification
74LV423
AC CHARACTERISTICS
GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 1KΩ
SYMBOL
PARAMETER
WAVEFORM
tPHL
Propagation delay
nRD, nA, nB, to nQ
Figure 4
CEXT = 0pF
REXT = 5kΩ
tPLH
Propagation delay
nRD, nA, nB, to nQ
Figure 4
CEXT = 0pF
REXT = 5kΩ
tPHL
Propagation delay
nRD to nQ (reset)
Figure 4
CEXT = 0pF
REXT = 5kΩ
tPLH
Propagation delay
nRD to nQ (reset)
Figure 4
CEXT = 0pF
REXT = 5kΩ
tW
Trigger pulse width
nA = LOW
Figure 4
tW
Trigger pulse width
nB = HIGH
Figure 4
tW
Reset pulse width
nRD = LOW
Figure 3
Output pulse width
tW nQ = HIGH
nQ = LOW
Figures 2, 3
Output pulse width
tW nQ = HIGH
Figures 2, 3
nQ = LOW
trt
Retrigger time
nA, nB
NOTES ON FOLLOWING PAGE
Figure 2
CONDITION
VCC(V)
1.2
2.0
2.7
3.0 to 3.6
4.5 to 5.5
1.2
2.0
2.7
3.0 to 3.6
4.5 to 5.5
1.2
2.0
2.7
3.0 to 3.6
4.5 to 5.5
1.2
2.0
2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.7
3.0 to 3.6
4.5 to 5.5
LIMITS
–40 to +85 °C
MIN TYP1 MAX
150
51 95
38 70
302 56
203 38
150
51 95
38 70
302 56
203 38
120
41 77
30 56
242 45
183 34
120
41 77
30 56
242 45
183 34
30
25
20
15
30
25
20 62
15
36
30
25
20
–40 to +125 °C
MIN MAX
116
85
68
45
116
85
68
45
92
68
54
41
92
68
54
41
40
30
25
20
40
30
25
20
40
30
25
UNIT
ns
ns
ns
ns
ns
ns
ns
4502
µs
752 ns
302 ns
1997 Feb 04
7
7페이지 | |||
구 성 | 총 16 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
74LV423 | Dual retriggerable monostable multivibrator with reset | Philips |
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