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參數資料
| 型號： | MC74HC254A |
| 廠商： | Motorola, Inc. |
| 英文描述： | Octal 3-State Noninverting Buffer Transceiver |
| 中文描述： | 八路三態收發器同相緩沖 |
| 文件頁數： | 3/7頁 |
| 文件大小： | 149K |
| 代理商： | MC74HC254A |
MC54/74HC245A
High–Speed CMOS Logic Data
DL129 — Rev 6
3
MOTOROLA
(Voltages Referenced to GND)
μ
A
±
0.5
±
5.0
25 C
±
0.1
6.0
Output in High–Impedance State
Vin = VIL or VIH
Vout = VCC or GND
Vin = VCC or GND
Maximum Three–State Leakage
Current
IOZ
Unit
μ
A
±
10
125 C
±
1.0
85 C
±
1.0
V
Test Conditions
Vin = VCC or GND
Parameter
Symbol
Iin
NOTE:Information on typical parametric values and high frequency or heavy load considerations can be found in Chapter 2 of the Motorola High–
Speed CMOS Data Book (DL129/D).
AC ELECTRICAL CHARACTERISTICS
(CL = 50 pF, Input tr = tf = 6 ns)
ICC
Maximum Input Leakage Current
6.0
4.0
40
Maximum Quiescent Supply
6.0
160
μ
A
b l
V
15
Guaranteed Limit
Speed CMOS Data Book (DL129/D).
– 55 to
6.0
Maximum Propagation Delay, A to B, B to A
(Figures 1 and 3)
4.5
22
22
19
22
Maximum Propagation Delay, Direction or Output Enable to A or B
(Figures 2 and 4)
4.5
23
12
28
33
Maximum Propagation Delay, Output Enable to A or B
(Figures 2 and 4)
4.5
28
33
Maximum Output Transition Time, Any Output
(Figures 1 and 3)
4.5
15
18
(I/O in High–Impedance State)
Maximum Three–State I/O Capacitance
CPD
Power Dissipation Capacitance (Per Transceiver Channel)*
* 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
40
pF
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