Nexperia
HEF4528B
Dual monostable multivibrator
HEF4528B All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved.
Product data sheet Rev. 10 — 14 March 2017
7 / 15
Symbol Parameter Conditions V
DD
Extrapolation formula
[1]
Min Typ Max Unit
5 V
[4]
- 5.45 - μs
10 V - 4.95 - μs
nQ or nQ;
R
EXT
= 10 kΩ;
C
EXT
= 1 nF;
see Figure 6
15 V - 4.85 - μs
5 V
[5]
- ±3 - %
10 V - ±2 - %
nQ output variation
over temperature
range
15 V - ±2 - %
5 V - ±2 - %
10 V - ±1 - %
Δt
W
pulse width
variation
nQ output variation
over voltage range
V
DD
± 5 %
15 V - ±1 - %
5 V 5 - 2 MΩ
10 V 5 - 2 MΩ
R
EXT
external timing
resistor
see Figure 4
15 V 5 - 2 MΩ
5 V no limits
10 V no limits
C
EXT
external timing
capacitor
see Figure 4
15 V no limits
[1] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (C
L
in pF).
[2] t
t
is the same as t
THL
and t
TLH
.
[3] For other R
EXT
, C
EXT
combinations and C
EXT
< 0.01 μF see Figure 4.
[4] For other R
EXT
, C
EXT
combinations and C
EXT
> 0.01 μF use formula t
W
= K × R
EXT
× C
EXT
.
where: t
W
= output pulse width (s);
R
EXT
= external timing resistor (Ω);
C
EXT
= external timing capacitor (F);
K = 0.42 for V
DD
= 5 V;
K = 0.32 for V
DD
= 10 V;
K = 0.30 for V
DD
= 15 V.
[5] T
amb
= -40 °C to +85 °C; Δt
W
is referenced to t
W
at T
amb
= 25 °C.
Table 8. Dynamic power dissipation P
D
P
D
can be calculated from the formulas shown. V
SS
= 0 V; t
r
= t
f
≤ 20 ns; T
amb
= 25 °C.
Symbol Parameter V
DD
Typical formula for P
D
(μW) where:
5 V P
D
= 4000 × f
i
+ Σ(f
o
× C
L
) × V
DD
2
10 V P
D
= 20000 × f
i
+ Σ(f
o
× C
L
) × V
DD
2
P
D
dynamic power
dissipation
15 V P
D
= 59000 × f
i
+ Σ(f
o
× C
L
) × V
DD
2
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
DD
= supply voltage in V;
Σ(f
o
× C
L
) = sum of the outputs.
