74HCT253D-Q100 查看數據表（PDF） - NXP Semiconductors.

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74HCT253D-Q100

IC MUX DUAL 4INPUT 2STATE 16SOIC

NXP Semiconductors. 

Nexperia

74HC253-Q100; 74HCT253-Q100

Dual 4-input multiplexer; 3-state

Table 7. Dynamic characteristics …continued

Voltages are referenced to GND (ground = 0 V); For test circuit see Figure 7.

Symbol Parameter

Conditions

25 C

Typ Max

tdis

disable time

nOE to nY; VCC = 4.5 V; [3] 13

30

see Figure 6

tt

transition time VCC = 4.5 V; see Figure 5

5

12

CPD

power dissipation per multiplexer;

[5] 55

-

capacitance

VI = GND to VCC  1.5 V

40 C to +85 C 40 C to +125 C Unit

Max

Max

38

45

ns

15

18

ns

pF

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

[2] ten is the same as tPZH, tPZL.

[3] tdis is the same as tPHZ, tPLZ.

[4] tt is the same as tTHL, tTLH.

[5] 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.

12. Waveforms

9,

6Q,QOQLQSXW

*1'

92+

Q<RXWSXW

92/

90

90

W3+/

90

W7+/

90



W3/+



W7/+

DDO

Fig 5.

Measurement points are given in Table 8.

VOL and VOH are typical voltage output levels that occur with the output load.

Propagation delays input (Sn, 1In, 2In) to output (nY) and output (nY) transition times

74HC_HCT253_Q100

Product data sheet

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

Rev. 2 — 21 January 2015

© Nexperia B.V. 2017. All rights reserved

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