HEF4528BP データシートの表示（PDF） - NXP Semiconductors.
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HEF4528BP Datasheet PDF : 16 Pages
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NXP Semiconductors
HEF4528B
Dual monostable multivibrator
Table 7. Dynamic characteristics …continued
VSS = 0 V; Tamb = 25 °C; for waveforms see Figure 6; for test circuit see Figure 7; unless otherwise specified.
Symbol Parameter
Conditions
VDD
Extrapolation formula[1] Min Typ Max Unit
∆tW
pulse width
variation
nQ output variation 5 V [5]
over temperature
range
10 V
15 V
-
±3 -
%
-
±2 -
%
-
±2 -
%
nQ output variation
over voltage range
VDD ± 5 %
5V
10 V
15 V
-
±2 -
%
-
±1 -
%
-
±1 -
%
REXT
external timing
resistor
see Figure 4
5V
10 V
5
-
2
MΩ
5
-
2
MΩ
15 V
5
-
2
MΩ
CEXT
external timing
capacitor
see Figure 4
5V
10 V
no limits
no limits
15 V
no limits
[1] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).
[2] tt is the same as tTHL and tTLH.
[3] For other REXT, CEXT combinations and CEXT < 0.01 µF see Figure 4.
[4] For other REXT, CEXT combinations and CEXT > 0.01 µF use formula tW = K × REXT × CEXT.
where: tW = output pulse width (s);
REXT = external timing resistor (Ω);
CEXT = external timing capacitor (F);
K = 0.42 for VDD = 5 V;
K = 0.32 for VDD = 10 V;
K = 0.30 for VDD = 15 V.
[5] Tamb = −40 °C to +85 °C; ∆tW is referenced to tW at Tamb = 25 °C.
Table 8. Dynamic power dissipation PD
PD can be calculated from the formulas shown. VSS = 0 V; tr = tf ≤ 20 ns; Tamb = 25 °C.
Symbol Parameter
VDD
Typical formula for PD (µW)
where:
PD
dynamic power 5 V
PD = 4000 × fi + Σ(fo × CL) × VDD2
fi = input frequency in MHz;
dissipation
10 V
PD = 20000 × fi + Σ(fo × CL) × VDD2
fo = output frequency in MHz;
15 V
PD = 59000 × fi + Σ(fo × CL) × VDD2
CL = output load capacitance in pF;
VDD = supply voltage in V;
Σ(fo × CL) = sum of the outputs.
HEF4528B_6
Product data sheet
Rev. 06 — 27 November 2009
© NXP B.V. 2009. All rights reserved.
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