參數(shù)資料
型號(hào): MC74HC139AD
廠商: ON SEMICONDUCTOR
元件分類: 通用總線功能
英文描述: Dual 1-of-4 Decoder/Demultiplexer
中文描述: HC/UH SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝: SOIC-16
文件頁數(shù): 3/8頁
文件大?。?/td> 138K
代理商: MC74HC139AD
MC74HC139A
http://onsemi.com
3
AC ELECTRICAL CHARACTERISTICS
(CL = 50 pF, Input tr = tf = 6.0 ns)
NOTE:For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON
Semiconductor High–Speed CMOS Data Book (DL129/D).
tTHL
(Figures 1 and 3)
Symbol
Maximum Propagation Delay, Select to Output Y
(Figures 1 and 3)
Parameter
2.0
V
115
25 C
145
25
175
30
ns
6.0
20
pF
tPHL
4.5
6.0
(Figures 2 and 3)
15
13
4.5
19
16
23
22
19
29
35
Maximum Input Capacitance
10
10
10
Cin
Typical @ 25
°
C, VCC = 5.0 V
55
CPD
Power Dissipation Capacitance (Per Decoder)*
* Used to determine the no–load dynamic power consumption: PD = CPD VCC2f + ICC VCC. For load considerations, see Chapter 2 of the
ON Semiconductor High–Speed CMOS Data Book (DL129/D).
pF
SWITCHING WAVEFORMS
tTHL
tTLH
Figure 1.
VCC
GND
tr
tPHL
tPLH
OUTPUT Y
SELECT
90%
50%
10%
90%
50%
10%
Figure 2.
50%
tPHL
tPLH
VCC
GND
OUTPUT Y
50%
INPUT A
*Includes all probe and jig capacitance
Figure 3. Test Circuit
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
tf
VALID
VALID
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