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74HCT423PW,112

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
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 V
CC
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
GND
2A
1A
V
CC
Transparent top view
7 10
6 11
5 12
4
13
3 14
2 15
8
9
1
16
terminal 1
index area
V
CC
(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)
1R
D, 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
V
CC
16 supply voltage
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 5 of 24
NXP Semiconductors
74HC423; 74HCT423
Dual retriggerable monostable multivibrator with reset
6. Functional description
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
= LOW-to-HIGH transition;
= HIGH-to-LOW transition;
= one HIGH level output pulse;
= one LOW level output pulse.
[2] If the monostable multivibrator was triggered before this condition was established, the pulse will continue as programmed.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For DIP16 packages: above 70 C the value of P
tot
derates linearly at 12 mW/K.
[3] For SO16 packages: above 70 C the value of P
tot
derates linearly at 8 mW/K;
For SSOP16 and TSSOP16 packages: above 60 C the value of P
tot
derates linearly at 5.5 mW/K;
For DHVQFN16 packages: above 60 C the value of P
tot
derates linearly at 4.5 mW/K.
Table 3. Function table
[1]
Input Output
nRD nA nB nQ nQ
LXXLH
XHXL
[2]
H
[2]
XXLL
[2]
H
[2]
HL
H H
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage 0.5 +7 V
I
IK
input clamping current V
I
< 0.5 V or V
I
>V
CC
+0.5 V
[1]
- 20 mA
I
OK
output clamping current V
O
< 0.5 V or V
O
>V
CC
+0.5V
[1]
- 20 mA
I
O
output current 0.5 V < V
O
< V
CC
+0.5V - 25 mA
I
CC
supply current - 50 mA
I
GND
ground current 50 - mA
T
stg
storage temperature 65 +150 C
P
tot
total power dissipation DIP16 package
[2]
- 750 mW
SO16, SSOP16, TSSOP16 and
DHVQFN16 packages
[3]
- 500 mW
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 6 of 24
NXP Semiconductors
74HC423; 74HCT423
Dual retriggerable monostable multivibrator with reset
8. Recommended operating conditions
9. Static characteristics
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 74HC423 74HCT423 Unit
Min Typ Max Min Typ Max
V
CC
supply voltage 2.0 5.0 6.0 4.5 5.0 5.5 V
V
I
input voltage 0 - V
CC
0-V
CC
V
V
O
output voltage 0 - V
CC
0-V
CC
V
T
amb
ambient temperature 40 - +125 40 - +125 C
t/V input transition rise
and fall rate
V
CC
= 2.0 V - - 625 - - - ns/V
V
CC
= 4.5 V - 1.67 139 - 1.67 139 ns/V
V
CC
= 6.0 V - - 83 - - - ns/V
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C 40 C to
+85 C
40 C to
+125 C
Unit
Min Typ Max Min Max Min Max
74HC423
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V 1.5 1.2 - 1.5 - 1.5 - V
V
CC
= 4.5 V 3.15 2.4 - 3.15 - 3.15 - V
V
CC
= 6.0 V 4.2 3.2 - 4.2 - 4.2 - V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V - 0.8 0.5 - 0.5 - 0.5 V
V
CC
= 4.5 V - 2.1 1.35 - 1.35 - 1.35 V
V
CC
= 6.0 V - 2.8 1.8 - 1.8 - 1.8 V
V
OH
HIGH-level
output voltage
V
I
=V
IH
or V
IL
I
O
= 20 A; V
CC
= 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
I
O
= 20 A; V
CC
= 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
I
O
= 20 A; V
CC
= 6.0 V 5.9 6.0 - 5.9 - 5.9 - V
I
O
= 4.0 mA; V
CC
= 4.5 V 3.98 4.32 - 3.84 - 3.7 - V
I
O
= 5.2 mA; V
CC
= 6.0 V 5.48 5.81 - 5.34 - 5.2 - V
V
OL
LOW-level
output voltage
V
I
=V
IH
or V
IL
I
O
=20A; V
CC
= 2.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
=20A; V
CC
= 4.5 V - 0 0.1 - 0.1 - 0.1 V
I
O
=20A; V
CC
= 6.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
=4.0mA; V
CC
= 4.5 V - 0.15 0.26 - 0.33 - 0.4 V
I
O
=5.2mA; V
CC
= 6.0 V - 0.16 0.26 - 0.33 - 0.4 V
I
I
input leakage
current
V
I
=V
CC
or GND; V
CC
=6.0V - - 0.1 - 1.0 - 1.0 A
I
CC
supply current V
I
=V
CC
or GND; I
O
=0A;
V
CC
=6.0V
- - 8.0 - 80 - 160 A
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

74HCT423PW,112

Mfr. #:
Buy 74HCT423PW,112
Manufacturer:
NXP Semiconductors
Description:
Monostable Multivibrator DUAL RETGIG MONOSTBL
Lifecycle:
New from this manufacturer.
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