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參數(shù)資料
| 型號(hào)： | MC74HC244A |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Octal 3 State Noninverting Buffer/Line Driver/Line Receiver(八總線緩沖器（三態(tài)同相輸出）) |
| 中文描述： | 八路3國同相緩沖器/線路驅(qū)動(dòng)器/線接收器（八總線緩沖器（三態(tài)同相輸出）） |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 130K |
| 代理商： | MC74HC244A |
MC74HC244A
http://onsemi.com
5
SWITCHING WAVEFORMS
Figure 1.
Figure 2.
V
CC
GND
t
f
t
r
DATA INPUT
A OR B
OUTPUT
YA OR YB
10%
50%
90%
10%
50%
90%
t
TLH
t
PLH
t
PHL
t
THL
ENABLE
A OR B
OUTPUT Y
OUTPUT Y
50%
50%
50%
90%
10%
t
PZL
t
PLZ
t
PZH
t
PHZ
V
CC
GND
HIGH
IMPEDANCE
V
OL
V
OH
HIGH
IMPEDANCE
TEST CIRCUITS
*Includes all probe and jig capacitance
C
L
*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 3. Test Circuit
*Includes all probe and jig capacitance
C
L
*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 4. Test Circuit
CONNECT TO V
CC
WHEN
TESTING t
PLZ
AND t
PZL
.
CONNECT TO GND WHEN
TESTING t
PHZ
AND t
PZH
.
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 (activelow). When a low level is applied
to these pins, the outputs are enabled and the devices
function 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
outputenable pins, these outputs are either noninverting
outputs or highimpedance outputs.
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PDF描述 |
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| MC74HC245AFELG | Octal 3-State Noninverting Bus Transceiver |
| MC74HC245ADT | Octal 3-State Noninverting Bus Transceiver |
| MC74HC245ADTG | Octal 3-State Noninverting Bus Transceiver |
| MC74HC245ADTR2 | Octal 3-State Noninverting Bus Transceiver |
| MC74HC245ADTR2G | Octal 3-State Noninverting Bus Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC74HC244ADT | 功能描述:緩沖器和線路驅(qū)動(dòng)器 2-6V Octal 3-State RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| MC74HC244ADTEL | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC74HC244ADTG | 功能描述:緩沖器和線路驅(qū)動(dòng)器 2-6V Octal 3-State Non-Inverting RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| MC74HC244ADTR2 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 2-6V Octal 3-State RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| MC74HC244ADTR2G | 功能描述:緩沖器和線路驅(qū)動(dòng)器 2-6V Octal 3-State Non-Inverting RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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