參數(shù)資料
型號(hào): MC74HC244A
廠商: Motorola, Inc.
英文描述: Octal 3-State Noninverting Buffer/Line Driver/Line Receiver
中文描述: 八路三態(tài)同相緩沖器/線路驅(qū)動(dòng)器/線接收器
文件頁(yè)數(shù): 3/8頁(yè)
文件大?。?/td> 185K
代理商: MC74HC244A
MC54/74HC244A
High–Speed CMOS Logic Data
DL129 — Rev 6
3
MOTOROLA
(Voltages Referenced to GND)
0.1
0.1
25 C
6.0
|Iout|
20
μ
A
Voltage
Unit
V
0.1
125 C
0.1
85 C
0.1
V
Test Conditions
Vin = VIL
Parameter
Symbol
Speed CMOS Data Book (DL129/D).
Maximum Low–Level Output
Vin = VIL or VIH
Vin = VCC or GND
Iout = 0
μ
A
2.4 mA
2.0
0.1
|Iout|
3.0
4.5
0.26
0.26
±
5.0
0.33
0.33
0.4
0.4
Current (per Package)
Current
Maximum Quiescent Supply
AC ELECTRICAL CHARACTERISTICS
(CL = 50 pF, Input tr = tf = 6 ns)
Symbol
b l
Parameter
V
18
15
20
Guaranteed Limit
U i
125 C
Speed CMOS Data Book (DL129/D).
V
– 55 to
25 C
85 C
Unit
tPLH,
4.5
6.0
Maximum Propagation Delay, A to YA or B to YB
4.5
6.0
2.0
22
22
96
33
115
23
27
23
135
tPLZ,
4.5
Maximum Propagation Delay, Output Enable to YA or YB
2.0
12
110
33
140
28
165
6.0
Maximum Propagation Delay, Output Enable to YA or YB
(Figures 2 and 4)
28
Maximum Output Transition Time, Any Output
(Figures 1 and 3)
4.5
15
18
High–Impedance State)
Maximum Three–State Output Capacitance (Output in
CPD
Power Dissipation Capacitance (Per Buffer)*
* 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).
B ff )*
Typical @ 25
°
C, VCC = 5.0 V
34
pF
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