74HC_HCT221_CNV_15 Datasheet, PDF (9/15 Pages) NXP Semiconductors – Dual non-retriggerable monostable multivibrator with reset

Philips Semiconductors
Dual non-retriggerable monostable
multivibrator with reset
Product specification
74HC/HCT221
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
min typ max min max. min. max.
WAVEFORMS
t_PLH
propagation delay (trigger)
30 50
63
nA, nR_D to nQ
t_PLH
propagation delay (trigger)
24 42
53
nB to nQ
t_PHL
propagation delay (trigger)
26 44
55
nA to nQ
t_PHL
propagation delay (trigger)
21 35
44
nB to nQ
t_PHL
propagation delay (trigger)
26 43
54
nR_D to nQ
t_PHL
propagation delay (reset)
26 43
54
nR_D to nQ
t_PLH
propagation delay (reset)
31 51
64
nR_D to nQ
t_THL/ t_TLH output transition time
7 15
19
75 ns 4.5 C_EXT = 0 pF;
R_EXT = 5 kΩ;
Fig.10
63 ns 4.5 C_EXT = 0 pF;
R_EXT = 5 kΩ;
Fig.10
66 ns 4.5 C_EXT = 0 pF;
R_EXT = 5 kΩ;
Fig.10
53 ns 4.5 C_EXT = 0 pF;
R_EXT = 5 kΩ;
Fig.10
65 ns 4.5 C_EXT = 0 pF;
R_EXT = 5 kΩ;
Fig.10
65 ns 4.5 C_EXT = 0 pF;
R_EXT = 5 kΩ;
Fig.11
77 ns 4.5 C_EXT = 0 pF;
R_EXT = 5 kΩ;
Fig.11
22 ns 4.5 Fig.10
t_W
trigger pulse width
nA = LOW
t_W
trigger pulse width
nB = HIGH
t_W
pulse width
nR_D = LOW
t_W
output pulse width
nQ = LOW
nQ = HIGH
t_W
trigger pulse width
nQ or nQ
t_W
trigger pulse width
nQ or nQ
20 13
25
30
ns 4.5 Fig.10
20 13
25
30
ns 4.5 Fig.10
22 13
28
33
ns 4.5 Fig.8
630 700 770 602 798 595 805 µs
140
−
−
ns
1.5
−
−
µs
5.0 C_EXT = 100 nF;
R_EXT = 10 kΩ;
Fig.10
4.5 C_EXT = 28 pF;
R_EXT = 2 kΩ;
Fig.10
4.5 C_EXT = 1 nF;
R_EXT = 2 kΩ;
Fig.10
December 1990
9