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74HCT423BQ Datenblatt(PDF) 4 Page - NXP Semiconductors

Teilenummer 74HCT423BQ
Bauteilbeschribung  Dual retriggerable monostable multivibrator with reset
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Hersteller  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

74HCT423BQ Datenblatt(HTML) 4 Page - NXP Semiconductors

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74HC_HCT423
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 6 — 19 December 2011
4 of 24
NXP Semiconductors
74HC423; 74HCT423
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 a
conductive die attach material. It cannot be used as
supply pin or input
Fig 5.
Pin configuration DIP16, SO16 and (T)SSOP16
Fig 6.
Pin configuration DHVQFN16
74HC423
74HCT423
1A
VCC
1B
1REXT/CEXT
1RD
1CEXT
1Q
1Q
2Q
2Q
2CEXT
2RD
2REXT/CEXT
2B
GND
2A
001aah785
1
2
3
4
5
6
7
8
10
9
12
11
14
13
16
15
001aah784
74HC423
74HCT423
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
VCC(1)
Table 2.
Pin description
Symbol
Pin
Description
1A, 2A
1, 9
trigger input (negative edge triggered)
1B, 2B
2, 10
trigger input (positive edge triggered)
1RD, 2RD
3, 11
direct reset (active LOW)
1Q, 2Q
4, 12
output (active LOW)
GND
8
ground (0 V)
1Q, 2Q
13, 5
output (active HIGH)
1CEXT, 2CEXT
14, 6
external capacitor connection
1REXT/CEXT, 2REXT/CEXT
15, 7
external resistor/capacitor connection
VCC
16
supply voltage


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