74HC4520 Просмотр технического описания (PDF) - NXP Semiconductors.
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74HC4520 Datasheet PDF : 17 Pages
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Nexperia
74HC4520; 74HCT4520
Dual 4-bit synchronous binary counter
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit, see Figure 7.
Symbol Parameter Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min
Max Min
Max
74HCT4520
tpd
propagation nCP0 to nQn; see Figure 6 [1]
delay
VCC = 4.5 V
- 28 53
-
66
-
80 ns
VCC = 5.0 V; CL = 15 pF
- 24 -
-
-
-
- ns
nCP1 to nQn; see Figure 6 [1]
VCC = 4.5 V
- 25 53
-
VCC = 5.0 V; CL = 15 pF
- 24 -
-
tPHL
HIGH to LOW nMR to nQn; see Figure 6
propagation
delay
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
- 16 35
-
- 13 -
-
tt
transition
nQn; see Figure 6
time
VCC = 4.5 V
[2]
- 7 15
-
tW
pulse width nCP0, nCP1 HIGH or LOW; see Figure 6
VCC = 4.5 V
20 10 -
25
nMR HIGH; see Figure 6
66
-
-
-
44
-
-
-
19
-
-
30
80 ns
- ns
53 ns
- ns
22 ns
- ns
VCC = 4.5 V
20 12 -
25
trec
recovery time nMR to nCP0, nCP1; see Figure 6
VCC = 4.5 V
0 8 -
0
tsu
set-up time nCP0 to nCP1; nCP1 to nCP0; see Figure 6
VCC = 4.5 V
16 6 -
20
fmax
maximum
nCP0, nCP1; see Figure 6
frequency
VCC = 4.5 V
30 58 -
24
VCC = 5.0 V; CL = 15 pF
- 64 -
-
CPD
power
VI = GND to VCC 1.5 V;
[3] - 24 -
-
dissipation VCC = 5 V; fi = 1 MHz
capacitance
-
30
-
0
-
24
-
20
-
-
-
-
- ns
- ns
- ns
- MHz
- MHz
- pF
[1] tpd is the same as tPHL and tPLH.
[2] tt is the same as tTHL and tTLH.
[3] CPD is used to determine the dynamic power dissipation (PD in W):
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.
74HC_HCT4520
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 10 May 2016
© Nexperia B.V. 2017. All rights reserved
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