參數(shù)資料
型號: 74LCX139TTR
廠商: 意法半導(dǎo)體
英文描述: LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER
中文描述: 低電壓CMOS雙2日至4譯碼器/解復(fù)用器
文件頁數(shù): 5/12頁
文件大?。?/td> 279K
代理商: 74LCX139TTR
74LCX139
5/12
Table 8: Capacitive Characteristics
1) C
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/2 (per gate)
Figure 5: Test Circuit
C
L
= 50 pF or equivalent (includes jig and probe capacitance)
R
L
= 500
or equivalent
R
T
= Z
OUT
of pulse generator (typically 50
)
Figure 6: Waveform - Propagation Delays For Inverting Outputs
(f=1MHz; 50% duty cycle)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25 °C
Min.
Typ.
Max.
C
IN
C
PD
Input Capacitance
Power Dissipation Capacitance
(note 1)
3.3
3.3
V
IN
= 0 to V
CC
f
IN
= 10MHz
V
IN
= 0 or V
CC
6
26
pF
pF
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