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| 74HC_HCT253_15 Datasheet, PDF (8/17 Pages) NXP Semiconductors – Dual 4-input multiplexer; 3-state | |||
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NXP Semiconductors
74HC253; 74HCT253
Dual 4-input multiplexer; 3-state
Table 7. Dynamic characteristics â¦continued
Voltages are referenced to GND (ground = 0 V); For test circuit see Figure 8.
Symbol Parameter
Conditions
25 ï°C
Typ Max
CPD
power dissipation per multiplexer;
capacitance
VI = GND to VCC
74HCT253
[5] 55
-
tpd
propagation delay 1ln to 1Y or 2ln to 2Y;
[1]
see Figure 6
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
Sn to nY; see Figure 6
20
38
17
-
VCC = 4.5 V
22
40
VCC = 5.0 V; CL = 15 pF
19
-
ten
enable time
nOE to nY; VCC = 4.5 V; [2] 14
30
see Figure 7
tdis
disable time
nOE to nY; VCC = 4.5 V; [3] 13
30
see Figure 7
tt
transition time VCC = 4.5 V; see Figure 6
5
12
CPD
power dissipation per multiplexer;
[5] 55
-
capacitance
VI = GND to VCC ï 1.5 V
ï40 ï°C to +85 ï°C ï40 ï°C to +125 ï°C Unit
Max
Max
pF
48
57
ns
-
ns
50
60
ns
ns
38
45
ns
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 ïW).
PD = CPD ï´ VCC2 ï´ fi ï´ N + ï¥(CL ï´ VCC2 ï´ 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;
ï¥(CL ï´ VCC2 ï´ fo) = sum of outputs.
74HC_HCT253
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 â 21 January 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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