參數(shù)資料
型號(hào): 74AHCT123A
廠商: NXP Semiconductors N.V.
英文描述: Dual retriggerable monostable multivibrator with reset(帶復(fù)位的雙路可再觸發(fā)單穩(wěn)態(tài)多諧振蕩器)
中文描述: 雙retriggerable單穩(wěn)態(tài)觸發(fā)器的復(fù)位(帶復(fù)位的雙路可再觸發(fā)單穩(wěn)態(tài)多諧振蕩器)
文件頁(yè)數(shù): 14/24頁(yè)
文件大小: 111K
代理商: 74AHCT123A
2000 Mar 15
14
Philips Semiconductors
Product specification
Dual retriggerable monostable multivibrator
with reset
74AHC123A;
74AHCT123A
Notes
1.
2.
3.
Typical values are measured at V
CC
= 3.3 V and T
amb
= 25
°
C.
Typical values are measured at V
CC
= 5.0 V and T
amb
= 25
°
C.
For C
EXT
10 nF the typical value of the pulse width t
W
(
μ
s) = R
EXT
(k
)
×
C
EXT
(nF).
V
CC
= 4.5 to 5.5 V;
note 2
t
W
trigger pulse
width; nA = LOW
trigger pulse
width; nB = HIGH
reset pulse width;
nR
D
= LOW
output pulse
width;nQ = HIGH;
nQ = LOW
see Fig 8
50 pF 5.0
5.0
5.0
ns
see Fig 8
5.0
5.0
5.0
ns
see Fig 9
5.0
5.0
5.0
ns
C
EXT
= 28 pF;
R
EXT
= 2 k
;
note 3; see Figs 8,
9 and 10
C
EXT
= 0.01
μ
F;
R
EXT
= 10 k
;
note 3; see
Figs 8, 9 and 10
C
EXT
= 0.1
μ
F;
R
EXT
= 10 k
;
note 3; see Figs 8,
9 and 10
C
EXT
= 100 pF;
R
EXT
= 1 k
; see
Figs 8, 9 and 10
C
EXT
= 0.01
μ
F;
R
EXT
= 1 k
; see
Figs 8, 9 and 10
100
200
240
240
ns
90
100
110
90
110
85
115
μ
s
0.9
1
1.1
0.9
1.1
0.85
1.15
ms
t
rt
retrigger time;
nA to nB
39
ns
1.2
μ
s
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
(
°
C)
UNIT
WAVEFORMS
C
L
25
40 to +85
40 to +125
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
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