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| 74HC4851-Q100 Datasheet, PDF (11/21 Pages) NXP Semiconductors – 8-channel analog multiplexer/demultiplexer with injection-current effect control | |||
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NXP Semiconductors
74HC4851-Q100; 74HCT4851-Q100
8-channel analog multiplexer/demultiplexer with injection-current
effect control
Table 9. Dynamic characteristics â¦continued
At recommended operating conditions; voltages are referenced to GND (ground 0 V); for load circuit see Figure 14.
Symbol Parameter
Conditions
25 ï°C
ï40 ï°C to +85 ï°C ï40 ï°C to +125 ï°C Unit
Min Typ Max Min Max
Min
Max
74HCT4851-Q100
tpd
propagation delay Z, Yn to Yn, Z;
[1]
see Figure 10
VCC = 4.5 V
Sn to Z, Yn;
see Figure 11
1.6 3.7 11.5 1.1 12.5
1.1
13.5 ns
[1]
ten
enable time
VCC = 4.5 V
E to Z, Yn;
see Figure 12
3.2 8.0 13 2.3
15
2.3
17 ns
[2]
tdis
disable time
VCC = 4.5 V
E to Z, Yn;
see Figure 12
4.2 8.6 25 3.0
30
3.0
35 ns
[3]
VCC = 4.5 V
CPD
power dissipation per channel;
capacitance
see Figure 13
28.5 64.7 80 28.2
90
28
100 ns
[4]
VCC = 5.0 V
- 30 -
-
-
-
-
pF
[1] tpd is the same as tPLH and tPHL.
[2] ten is the same as tPZH and tPZL.
[3] tdis is the same as tPLZ and tPHZ.
[4] CPD is used to determine the dynamic power dissipation (PD in ïW):
PD = CPD ï´ VCC2 ï´ fi + ï¥{(CL + Csw) ï´ VCC2 ï´ fo} where:
fi = input frequency in MHz;
fo = output frequency in MHz;
ï¥{(CL + Csw) ï´ VCC2 ï´ fo} = sum of outputs;
CL = output load capacitance in pF;
Csw = switch capacitance in pF;
VCC = supply voltage in V.
12. Waveforms
VCC
Z or Yn
input
GND
VCC
Yn or Z
output
GND
0.5VCC
tPLH
0.5VCC
Fig 10. Input (Z, Yn) to output (Yn, Z) propagation delays
tPHL
001aah574
74HC_HCT4851_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 â 2 August 2012
© NXP B.V. 2012. All rights reserved.
11 of 21
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