74AHC123APW View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
74AHC123APW Datasheet PDF : 21 Pages
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NXP Semiconductors
74AHC123A; 74AHCT123A
Dual retriggerable monostable multivibrator with reset
5. Pinning information
5.1 Pinning
1A 1
1B 2
1RD 3
1Q 4
2Q 5
2CEXT 6
2REXT/CEXT 7
GND 8
74AHC123A
74AHCT123A
16 VCC
15 1REXT/CEXT
14 1CEXT
13 1Q
12 2Q
11 2RD
10 2B
9 2A
001aah068
Fig 5. Pin configuration SO16, TSSOP16
terminal 1
index area
74AHC123A
74AHCT123A
1B 2
1RD 3
1Q 4
2Q 5
2CEXT 6
2REXT/CEXT 7
GND(1)
15 1REXT/CEXT
14 1CEXT
13 1Q
12 2Q
11 2RD
10 2B
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Transparent top view
(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 6. Pin configuration DHVQFN16
5.2 Pin description
Table 2. Pin description
Symbol
Pin
1A
1
1B
2
1RD
3
1Q
4
2Q
5
2CEXT
6
2REXT/CEXT
7
GND
8
2A
9
2B
10
2RD
11
2Q
12
1Q
13
1CEXT
14
1REXT/CEXT
15
VCC
16
Description
negative-edge triggered input 1
positive-edge triggered input 1
direct reset LOW and positive-edge triggered input 1
active LOW output 1
active HIGH output 2
external capacitor connection 2
external resistor and capacitor connection 2
ground (0 V)
negative-edge triggered input 2
positive-edge triggered input 2
direct reset LOW and positive-edge triggered input 2
active LOW output 2
active HIGH output 1
external capacitor connection 1
external resistor and capacitor connection 1
supply voltage
74AHC_AHCT123A_2
Product data sheet
Rev. 02 — 18 January 2008
© NXP B.V. 2008. All rights reserved.
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