74LV423D 查看數據表（PDF） - Philips Electronics
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74LV423D Datasheet PDF : 16 Pages
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Philips Semiconductors
Dual retriggerable monostable multivibrator
with reset
Preliminary specification
74LV423
PIN CONFIGURATION
1A 1
1B 2
1RD 3
1Q 4
2Q 5
2CEXT 6
2REXT/CEXT 7
GND 8
16 VCC
15 1REXT/CEXT
14 1CEXT
13 1Q
12 2Q
11 2RD
10 2B
9 2A
SV00096
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
FUNCTION
1,9
1A, 2A
Trigger inputs
(negative-edge triggered)
2,10
1B, 2B
Trigger inputs
(positive-edge triggered)
3,11
4, 12
1RD, 2RD
1Q, 2Q
Direct reset LOW
Outputs (active LOW)
7
2REXT/CEXT External resistor/capacitor connection
8
GND
Ground (0V)
13, 5
1Q, 2Q Outputs (active HIGH)
14, 6
15
16
1CEXT,
2CEXT
1REXT/CEXT
VCC
External capacitor connection
External resistor/capacitor connection
Positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
14
CX
15
RCX
1
&
2
3
R
6
CX
7
RCX
9
&
10
11
R
13
4
5
12
SV00161
LOGIC SYMBOL
1 1A
9 2A
2 1B
10 2B
3 1RD
11 2RD
1CEXT 14
2CEXT 6
1REXT/CEXT 15
2REXT/CEXT 7
S
Q
T
Q
1Q 13
2Q 5
1Q 4
2Q 12
RD
SV00160
FUNCTIONAL DIAGRAM
1CEXT 14
2CEXT 6
1REXT/CEXT 15
2REXT/CEXT 7
1 1A
9 2A
2 1B
10 2B
3 1RD
11 2RD
S
Q
T
Q
1Q 13
2Q 5
1Q 4
2Q 12
RD
SV00162
1997 Feb 04
3
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