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HEF4518B Datasheet(PDF) 6 Page - Nexperia B.V. All rights reserved

Part # HEF4518B
Description  Dual BCD counter
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Manufacturer  NEXPERIA [Nexperia B.V. All rights reserved]
Direct Link  https://www.nexperia.com/
Logo NEXPERIA - Nexperia B.V. All rights reserved

HEF4518B Datasheet(HTML) 6 Page - Nexperia B.V. All rights reserved

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Nexperia
HEF4518B
Dual BCD counter
11. Dynamic characteristics
Table 7. Dynamic characteristics
VSS = 0 V; Tamb = 25 °C unless otherwise specified; for test circuit see Fig. 6.
Symbol Parameter
Conditions
VDD Extrapolation formula[1]
Min
Typ
Max Unit
5 V
93 ns + (0.55 ns/pF)CL
-
120
240 ns
10 V 44 ns + (0.23 ns/pF)CL
-
55
110 ns
nCP0, nCP1 to nQn;
see Fig. 5
15 V 32 ns + (0.16 ns/pF)CL
-
40
80 ns
5 V
48 ns + (0.55 ns/pF)CL
-
75
150 ns
10 V 24 ns + (0.23 ns/pF)CL
-
35
70 ns
tPHL
HIGH to LOW
propagation delay
nMR to nQn; see Fig. 5
15 V 17 ns + (0.16 ns/pF)CL
-
25
50 ns
5 V
93 ns + (0.55 ns/pF)CL
-
120
240 ns
10 V 44 ns + (0.23 ns/pF)CL
-
55
110 ns
tPLH
LOW to HIGH
propagation delay
nCP0, nCP1 to nQn;
see Fig. 5
15 V 32 ns + (0.16 ns/pF)CL
-
40
80 ns
5 V
10 ns + (1.00 ns/pF)CL
-
60
120 ns
10 V 9 ns + (0.42 ns/pF)CL
-
30
60 ns
tt
transition time
nQn; see Fig. 5
15 V 6 ns + (0.28 ns/pF)CL
-
20
40 ns
5 V
60
30
-
ns
10 V
30
15
-
ns
nCP0 input LOW;
minimum width;
see Fig. 5
15 V
20
10
-
ns
5 V
60
30
-
ns
10 V
30
15
-
ns
nCP1 input HIGH;
minimum width
see Fig. 5
15 V
20
10
-
ns
5 V
30
15
-
ns
10 V
20
10
-
ns
tW
pulse width
nMR input HIGH;
minimum width;
see Fig. 5
15 V
16
8
-
ns
5 V
50
25
-
ns
10 V
30
15
-
ns
trec
recovery time
nMR input; see Fig. 5
15 V
20
10
-
ns
5 V
50
25
-
ns
10 V
30
15
-
ns
nCP0 to nCP1;
see Fig. 5
15 V
20
10
-
ns
5 V
50
25
-
ns
10 V
30
15
-
ns
tsu
set-up time
nCP1 to nCP0;
see Fig. 5
15 V
20
10
-
ns
5 V
8
16
-
MHz
10 V
15
30
-
MHz
fmax
maximum
frequency
nCP0, nCP1; see Fig. 5
15 V
20
40
-
MHz
[1] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).
HEF4518B
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 9 — 3 December 2021
6 / 13


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