74HC_HCT423_15 Datasheet, PDF (4/24 Pages) NXP Semiconductors – Dual retriggerable monostable multivibrator with reset

NXP Semiconductors
74HC423; 74HCT423
Dual retriggerable monostable multivibrator with reset
5. Pinning information
5.1 Pinning
74HC423
74HCT423
1A 1
1B 2
1RD 3
1Q 4
2Q 5
2CEXT 6
2REXT/CEXT 7
GND 8
74HC423
74HCT423
16 V_CC
15 1REXT/CEXT
14 1CEXT
13 1Q
12 2Q
11 2RD
10 2B
9 2A
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terminal 1
index area
1B 2
1RD 3
1Q 4
2Q 5
2CEXT 6
2REXT/CEXT 7
V_CC(1)
15 1REXT/CEXT
14 1CEXT
13 1Q
12 2Q
11 2RD
10 2B
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Transparent top view
Fig 5. Pin configuration DIP16, SO16 and (T)SSOP16
(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 6. Pin configuration DHVQFN16
5.2 Pin description
Table 2. Pin description
Symbol
1A, 2A
1B, 2B
1RD, 2RD
1Q, 2Q
GND
1Q, 2Q
1CEXT, 2CEXT
1REXT/CEXT, 2REXT/CEXT
V_CC
Pin
1, 9
2, 10
3, 11
4, 12
8
13, 5
14, 6
15, 7
16
Description
trigger input (negative edge triggered)
trigger input (positive edge triggered)
direct reset (active LOW)
output (active LOW)
ground (0 V)
output (active HIGH)
external capacitor connection
external resistor/capacitor connection
supply voltage
74HC_HCT423
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 19 December 2011
© NXP B.V. 2011. All rights reserved.
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