74HC299(2016) Просмотр технического описания (PDF) - NXP Semiconductors.

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74HC299
(Rev.:2016)

8-bit universal shift register; 3-state

NXP Semiconductors. 

Nexperia

74HC299

8-bit universal shift register; 3-state

Table 7. Dynamic characteristics …continued

GND (ground = 0 V); for test circuit, see Figure 10.

Symbol Parameter

Conditions

fmax

maximum

frequency

CP input; see Figure 6

VCC = 2.0 V

VCC = 4.5 V

VCC = 5.0 V; CL = 15 pF

VCC = 6.0 V

[1] tpd is the same as tPHL and tPLH.

[2] tpd is the same as tPHL.

[3] tt is the same as tTHL and tTLH.

[4] ten is the same as tPZH and tPZL.

[5] tdis is the same as tPHZ and tPLZ.

[6] 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  VCC2  fo) = sum of outputs;

CL = output load capacitance in pF;

VCC = supply voltage in V;

N = number of inputs switching.

25 C

Min Typ Max

40 C to

+85 C

Min Max

40 C to Unit

+125 C

Min Max

5.0 15 - 4.0 - 3.4 - MHz

25 45 - 20 - 17 - MHz

- 50 -

-

-

-

- MHz

29 54 - 24 - 20 - MHz

74HC299

Product data sheet

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

Rev. 4 — 26 February 2016

© Nexperia B.V. 2017. All rights reserved

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