74HC423 Datasheet, PDF (9/23 Pages) NXP Semiconductors – Dual retriggerable monostable multivibrator with reset

NXP Semiconductors
74HC423; 74HCT423
Dual retriggerable monostable multivibrator with reset
Table 7. Dynamic characteristics …continued
GND = 0 V; test circuit see Figure 12.
Symbol Parameter Conditions
25 °C
−40 °C to −40 °C to Unit
+85 °C +125 °C
Min Typ Max Min Max Min Max
R_EXT
C_EXT
external timing V_CC = 2.0 V; see Figure 8
resistor
V_CC = 5.0 V
external timing V_CC = 5.0 V; see Figure 8
capacitor
10 - 1000 - - - - kΩ
2 - 1000 - - - - kΩ
[5]
no limits
pF
C_PD
power
per package; V_I = GND to V_CC
dissipation
capacitance
[6] _-
54
-
-
-
-
- pF
74HCT423
t_pd
propagation nA or nB to nQ or nQ; R_EXT = 5 kΩ;
delay
C_EXT = 0 pF; see Figure 7
V_CC = 4.5 V
V_CC = 5.0 V; C_L = 15 pF
nRD to nQ or nQ; R_EXT = 5 kΩ;
C_EXT = 0 pF; see Figure 7
V_CC = 4.5 V
V_CC = 5.0 V; C_L = 15 pF
t_t
transition time V_CC = 4.5 V; Figure 7
[1] _{- 30 51 - 64 - 77 ns}
[1] _-
26
-
-
-
-
- ns
[1] _{- 26 48 - 60 - 72 ns}
[1] _{- 26 48 - 60 - 72 ns}
[1] _-
22
-
-
-
-
- ns
[2] _-
7 15 - 19 - 22 ns
t_W
pulse width trigger pulse; nA input LOW; V_CC = 4.5 V;
20 5 - 25 - 30 - ns
see Figure 7 and Figure 10
trigger pulse; nB input HIGH; V_CC = 4.5 V;
see Figure 7 and Figure 10
20 5 - 25 - 30 - ns
reset pulse; nRD input LOW; V_CC = 4.5 V;
see Figure 7 and Figure 11
20 7 - 25 - 30 - ns
output pulse; nQ HIGH or nQ LOW;
V_CC = 5.0 V; R_EXT = 10 kΩ;
C_EXT = 100 nF; see Figure 7, Figure 10
and Figure 11
- 450 - - - - - µs
output pulse; nQ HIGH or nQ LOW;
[3] _-
75
-
-
-
-
- ns
V_CC = 5.0 V; R_EXT = 5 kΩ; C_EXT = 0 pF;
V_I = GND to V_CC − 1.5 V; see Figure 7,
Figure 10 and Figure 11
t_rtrig
R_EXT
retrigger time nA or nB input; V_CC = 5.0 V; R_EXT = 5 kΩ;
C_EXT = 0 pF; see Figure 10
external timing V_CC = 5.0 V; see Figure 8
resistor
- 110 - - - - - ns
2 - 1000 - - - - kΩ
C_EXT external timing V_CC = 5.0 V; see Figure 8
[5]
no limits
pF
capacitor
74HC_HCT423_3
Product data sheet
Rev. 03 — 24 July 2008
© NXP B.V. 2008. All rights reserved.
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