74HC237DB(2004) 데이터 시트보기 (PDF) - NXP Semiconductors.
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74HC237DB Datasheet PDF : 19 Pages
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Philips Semiconductors
74HC237
3-to-8 line decoder, demultiplexer with address latches
Table 8: Dynamic characteristics …continued
GND = 0 V; tr = tf = 6 ns; CL = 50 pF; see Figure 9.
Symbol
Parameter
Tamb = −40 °C to +125 °C
tPHL, tPLH
propagation delay An to Yn
propagation delay LE to Yn
propagation delay E1 to Yn
propagation delay E2 to Yn
tTHL, tTLH
output transition time
tW
LE pulse width HIGH
tsu
set-up time An to LE
th
hold time An to LE
Conditions
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 7
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 8
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 8
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
see Figure 8
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
[1] CPD is used to determine the dynamic power dissipation (PD in µW).
PD = CPD × VCC2 × fi × N + ∑(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
∑(CL × VCC2 × fo) = sum of outputs.
9397 750 13807
Product data sheet
Rev. 03 — 12 November 2004
Min
Typ
Max Unit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
75
-
15
-
13
-
75
-
15
-
13
-
45
-
9
-
8
-
240
ns
48
ns
41
ns
285
ns
57
ns
48
ns
220
ns
44
ns
38
ns
220
ns
44
ns
38
ns
110
ns
22
ns
19
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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