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74AHC123APW Fiches technique(PDF) 5 Page - NXP Semiconductors

No de pièce 74AHC123APW
Description  Dual retriggerable monostable multivibrator with reset
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Fabricant  NXP [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo NXP - NXP Semiconductors

74AHC123APW Fiches technique(HTML) 5 Page - NXP Semiconductors

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74AHC_AHCT123A_2
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 18 January 2008
5 of 21
NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
5.
Pinning information
5.1 Pinning
5.2 Pin description
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as
a supply pin or input.
Fig 5.
Pin configuration SO16, TSSOP16
Fig 6.
Pin configuration DHVQFN16
74AHC123A
74AHCT123A
1A
VCC
1B
1REXT/CEXT
1RD
1CEXT
1Q
1Q
2Q
2Q
2CEXT
2RD
2REXT/CEXT
2B
GND
2A
001aah068
1
2
3
4
5
6
7
8
10
9
12
11
14
13
16
15
001aah067
74AHC123A
74AHCT123A
2REXT/CEXT
2B
2CEXT
2RD
2Q
2Q
1Q
1Q
1RD
1CEXT
1B
1REXT/CEXT
Transparent top view
7
10
6
11
5
12
4
13
3
14
2
15
terminal 1
index area
GND(1)
Table 2.
Pin description
Symbol
Pin
Description
1A
1
negative-edge triggered input 1
1B
2
positive-edge triggered input 1
1RD
3
direct reset LOW and positive-edge triggered input 1
1Q
4
active LOW output 1
2Q
5
active HIGH output 2
2CEXT
6
external capacitor connection 2
2REXT/CEXT
7
external resistor and capacitor connection 2
GND
8
ground (0 V)
2A
9
negative-edge triggered input 2
2B
10
positive-edge triggered input 2
2RD
11
direct reset LOW and positive-edge triggered input 2
2Q
12
active LOW output 2
1Q
13
active HIGH output 1
1CEXT
14
external capacitor connection 1
1REXT/CEXT
15
external resistor and capacitor connection 1
VCC
16
supply voltage


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