HEF4555BT(2018) 查看數據表（PDF） - NXP Semiconductors.

零件编号

产品描述 (功能)

生产厂家

HEF4555BT
(Rev.:2018)

1-of-4 decoder/demultiplexer

NXP Semiconductors. 

Nexperia

HEF4555B

1-of-4 decoder/demultiplexer

11. Dynamic characteristics

Table 7. Dynamic characteristics

VSS = 0 V; Tamb = 25 °C; for test circuit see Fig. 5; unless otherwise specified.

Symbol Parameter

Conditions

VDD

Extrapolation formula

tPHL

HIGH to LOW

nAn to nYn;

5V

[1] 88 ns + (0.55 ns/pF)CL

propagation delay see Fig. 4

10 V

34 ns + (0.23 ns/pF)CL

15 V

22 ns + (0.16 ns/pF)CL

nE to nYn;

see Fig. 4

5V

10 V

[1] 98 ns + (0.55 ns/pF)CL

39 ns + (0.23 ns/pF)CL

15 V

22 ns + (0.16 ns/pF CL

tPLH

LOW to HIGH

nAn to nYn;

5V

[1] 113 ns + (0.55 ns/pF)CL

propagation delay see Fig. 4

10 V

44 ns + (0.23 ns/pF)CL

15 V

32 ns + (0.16 ns/pF)CL

nE to nYn;

see Fig. 4

5V

10 V

[1] 123 ns + (0.55 ns/pF)CL

44 ns + (0.23 ns/pF)CL

15 V

32 ns + (0.16 ns/pF)CL

tt

transition time

nYn; see Fig. 4 5 V

[1][2] 10 ns + (1.00 ns/pF)CL

10 V

9 ns + (0.42 ns/pF)CL

15 V

6 ns + (0.28 ns/pF)CL

Min Typ Max Unit

- 115 230 ns

-

45 90 ns

-

30 65 ns

- 125 250 ns

-

50 95 ns

-

30 65 ns

- 140 280 ns

-

55 105 ns

-

40 75 ns

- 150 295 ns

-

55 110 ns

-

40 75 ns

-

60 120 ns

-

30 60 ns

-

20 40 ns

[1] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).

[2] Transition time tt is the same as the HIGH to LOW and LOW to HIGH transition times tTHL and tTLH.

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

PD

Parameter

dynamic power

dissipation

VDD

5V

10 V

15 V

Typical formula for PD (μW)

PD = 4500 × fi + Σ(fo × CL) × VDD2

PD = 18800 × fi + Σ(fo × CL) × VDD2

PD = 45700 × fi + Σ(fo × CL) × VDD2

Where:

fi = input frequency in MHz,

fo = output frequency in MHz,

CL = output load capacitance in pF,

VDD = supply voltage in V,

Σ(fo × CL) = sum of the outputs.

HEF4555B

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 7 — 15 October 2018

© Nexperia B.V. 2018. All rights reserved

5 / 10

Share Link: