參數(shù)資料
型號(hào): MC74HC253N
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: Dual 4-Input Data Selector/Multiplexer with 3-State Outputs
中文描述: HC/UH SERIES, DUAL 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDIP16
封裝: PLASTIC, DIP-16
文件頁(yè)數(shù): 3/5頁(yè)
文件大小: 186K
代理商: MC74HC253N
MC74HC253
High–Speed CMOS Logic Data
DL129 — Rev 6
3
MOTOROLA
tPHL
(Figures 1 and 3)
4.5
28
42
6.0
30
35
45
tPLZ,
Maximum Propagation Delay, Output Enable to Y
2.0
150
190
37
225
ns
tPZH
(Figures 2 and 4)
4.5
20
30
6.0
13
25
19
Cin
Cout
Maximum Input Capacitance
10
16
10
pF
Maximum Three–State Output Capacitance
15
10
15
pF
1. For propagation delays with loads other than 50 pF, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).
2. Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).
15
CPD
Power Dissipation Capacitance (Per Multiplexer)*
* Used to determine the no–load dynamic power consumption: PD = CPD VCC2f + ICC VCC. For load considerations, see Chapter 2 of the
Motorola High–Speed CMOS Data Book (DL129/D).
Typical @ 25
°
C, VCC = 5.0 V
31
pF
SWITCHING WAVEFORMS
Figure 1.
Figure 2.
tr
tf
VCC
GND
A OR D
Y
tPHL
tPLH
tTLH
tTHL
10%
590%
10%
50%
OUTPUT
ENABLE
Y
Y
50%
50%
50%
90%
10%
tPZL
tPLZ
tPZH
tPHZ
VCC
GND
HIGH
IMPEDANCE
VOL
VOH
HIGH
IMPEDANCE
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