74AHC377D 데이터 시트보기 (PDF) - NXP Semiconductors.
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74AHC377D Datasheet PDF : 16 Pages
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NXP Semiconductors
74AHC377; 74AHCT377
Octal D-type flip-flop with data enable; positive-edge trigger
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 8.
Symbol Parameter Conditions
25 °C
−40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ[1] Max Min Max
Min
Max
74AHCT377; VCC = 4.5 V to 5.5 V
tpd
propagation CP to Qn; see Figure 6
delay
CL = 15 pF
[2]
- 4.0 9.0 1.0 10.5
1.0
11.5 ns
CL = 50 pF
- 5.7 10.5 1.0 12.0
1.0
13.5 ns
fmax
maximum see Figure 6
frequency
CL = 15 pF
90 140 -
80
-
80
- MHz
CL = 50 pF
tW
pulse width CP HIGH or LOW;
see Figure 6
85 130 -
75
-
75
- MHz
5.0 -
-
5.0
-
5.0
- ns
tsu
set-up time Dn, E to CP; see Figure 7
4.5 -
-
4.5
-
4.5
- ns
th
hold time Dn, E to CP; see Figure 7
2.0 -
-
2.0
-
2.0
- ns
CPD
power
fi = 1 MHz; VI = GND to VCC [3] -
23 -
-
-
-
- pF
dissipation
capacitance
[1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2] tpd is the same as tPLH and tPHL.
[3] CPD is used to determine the dynamic power dissipation (PD in µW).
PD = CPD × VCC2 × fi × N + Σ(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;
Σ(CL × VCC2 × fo) = sum of the outputs.
74AHC_AHCT377_2
Product data sheet
Rev. 02 — 12 June 2008
© NXP B.V. 2008. All rights reserved.
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