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參數資料
| 型號： | MC74HC244ASD |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal 3-State Noninverting Buffer/Line Driver/Line Receiver |
| 中文描述： | HC/UH SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | PLASTIC, SSOP-20 |
| 文件頁數： | 4/7頁 |
| 文件大小： | 258K |
| 代理商： | MC74HC244ASD |
MC54/74HC244A
MOTOROLA
High–Speed CMOS Logic Data
DL129 — Rev 6
4
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.
LOGIC DETAIL
DATA
INPUT
A OR B
ENABLE A OR
ENABLE B
TO THREE OTHER
A OR B INVERTERS
ONE OF 8
INVERTERS
YA
OR
YB
VCC
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| MC74HC245ADW | Octal 3-State Noninverting Bus Transceiver |
| MC74HC245AN | Octal 3-State Noninverting Bus Transceiver |
| MC74HC251 | 8-Input Data Selector/Multiplexer with 3-State Outputs |
| MC74HC251D | 8-Input Data Selector/Multiplexer with 3-State Outputs |
| MC74HC251N | 8-Input Data Selector/Multiplexer with 3-State Outputs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC74HC244B1 | 制造商:STMicroelectronics 功能描述: |
| MC74HC244N | 制造商:Panasonic Industrial Company 功能描述:IC |
| MC74HC245ADT | 功能描述:總線收發器 2-6V Octal 3-State RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| MC74HC245ADTEL | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC74HC245ADTG | 功能描述:總線收發器 2-6V Octal 3-State Non-Inverting Bus RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
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