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參數資料
| 型號： | MC54-74HC244A |
| 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/線路驅動器/線接收器 |
| 文件頁數： | 4/8頁 |
| 文件大?。?/td> | 185K |
| 代理商： | MC54-74HC244A |
MC54/74HC244A
MOTOROLA
High–Speed CMOS Logic Data
DL129 — Rev 6
4
SWITCHING WAVEFORMS
Figure 1.
Figure 2.
VCC
GND
tf
tr
DATA INPUT
A OR B
OUTPUT
YA OR YB
10%
90%
10%
90%
tTLH
tPLH
tPHL
tTHL
ENABLE
A OR B
OUTPUT Y
OUTPUT Y
50%
50%
50%
90%
10%
tPZL
tPLZ
tPZH
tPHZ
VCC
GND
HIGH
IMPEDANCE
VOL
VOH
HIGH
IMPEDANCE
TEST CIRCUITS
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 3. Test Circuit
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 4. Test Circuit
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
1 k
PIN DESCRIPTIONS
INPUTS
A1, A2, A3, A4, B1, B2, B3, B4
(Pins 2, 4, 6, 8, 11, 13, 15, 17)
Data input pins. Data on these pins appear in noninverted
form on the corresponding Y outputs, when the outputs are
enabled.
CONTROLS
Enable A, Enable B (Pins 1, 19)
Output enables (active–low). When a low level is applied
to these pins, the outputs are enabled and the devices func-
tion as noninverting buffers. When a high level is applied, the
outputs assume the high impedance state.
OUTPUTS
YA1, YA2, YA3, YA4, YB1, YB2, YB3, YB4
(Pins 18, 16, 14, 12, 9, 7, 5, 3)
Device outputs. Depending upon the state of the output–
enable pins, these outputs are either noninverting outputs or
high–impedance outputs.
相關PDF資料 |
PDF描述 |
|---|---|
| MC74HC244A | Octal 3-State Noninverting Buffer/Line Driver/Line Receiver |
| MC54-74HC245A | Octal 3-State Noninverting Buffer Transceiver |
| MC74HC254A | Octal 3-State Noninverting Buffer Transceiver |
| MC54-74HC259A | 8-Bit Addressable Latch 1-of-8 Decoder |
| MC74HC259A | 8-Bit Addressable Latch 1-of-8 Decoder |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC54-74HC245A | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Octal 3-State Noninverting Buffer Transceiver |
| MC54-74HC251 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Input Data Selector/Multiplexer with 3-State Outputs |
| MC54-74HC259 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Addressable Latch 1-of-8 Decoder |
| MC54-74HC259A | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Addressable Latch 1-of-8 Decoder |
| MC54-74HC27 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Triple 3-Input NOR Gate |
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