74HC02D 查看數據表（PDF） - NXP Semiconductors.
零件编号
产品描述 (功能)
生产厂家
74HC02D Datasheet PDF : 16 Pages
| |||
NXP Semiconductors
74HC02; 74HCT02
Quad 2-input NOR gate
Table 7. Dynamic characteristics
GND = 0 V; CL = 50 pF; for load circuit see Figure 7.
Symbol Parameter
Conditions
Min
74HCT02
tpd
propagation delay nA, nB to nY; see Figure 6
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
tt
transition time
VCC = 4.5 V; see Figure 6
CPD
power dissipation per package;
capacitance
VI = GND to VCC 1.5 V
[1]
-
-
[2]
-
[3]
-
[1] tpd is the same as tPHL and tPLH.
[2] tt is the same as tTHL and tTLH.
[3] 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.
25 C
Typ
11
9
7
24
40 C to +125 C Unit
Max Max
Max
(85 C) (125 C)
19
24
-
-
15
19
-
-
29 ns
- ns
22 ns
- pF
11. Waveforms
VI
nA, nB input
GND
VOH
nY output
VOL
VM
tPHL
VY
tTHL
VM
VX
tPLH
tTLH
Fig 6.
Measurement points are given in Table 9.
VOL and VOH are typical voltage output levels that occur with the output load.
Input to output propagation delays
001aai814
Table 8. Measurement points
Type
Input
74HC02
74HCT02
VM
0.5VCC
1.3 V
Output
VM
0.5VCC
1.3 V
VX
0.1VCC
0.1VCC
VY
0.9VCC
0.9VCC
74HC_HCT02
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 4 September 2012
© NXP B.V. 2012. All rights reserved.
6 of 16
Share Link: 