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參數資料
| 型號： | DM74AS244N |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | AS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, MS-001, DIP-20 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 56K |
| 代理商： | DM74AS244N |
2000 Fairchild Semiconductor Corporation
DS006298
www.fairchildsemi.com
October 1986
Revised March 2000
D
DM74AS240 DM74AS244
3-STATE Bus Driver/Receiver
General Description
This family of Advance Schottky 3-STATE Bus circuits are
designed to provide either bidirectional or unidirectional
buffer interface in Memory, Microprocessor, and Communi-
cation Systems. The output characteristics of the circuits
have low impedance sufficient to drive terminated trans-
mission lines down to 133
. The input characteristics of
the circuits likewise have a high impedance so it will not
significantly load the transmission line. The package con-
tains eight 3-STATE buffers organized with four buffers
having a common 3-STATE enable gate. The DM74AS240
and DM74AS244 are eight wide in a 20 pin package, and
may be used as a 4 wide bidirectional or eight wide unidi-
rectional. The buffer selection includes inverting and non-
inverting, with enable or disable 3-STATE control.
Features
I
Advanced oxide-isolated, ion-implanted Schottky TTL
process
I
Improved switching performance with less power dissi-
pation compared with Schottky counterpart
I
Functional and pin compatible with 74LS and Schottky
counterpart
I
Switching response specified into 500
and 50 pF
I
Specified to interface with CMOS at V
OH
=
V
CC
2V
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams
DM74AS240
DM74AS244
Function Tables
DM74AS240
DM74AS244
L
=
LOW Logic Level
H
=
HIGH Logic Level
X
=
Either LOW or HIGH Logic Level
Z
=
High Impedance
Order Number
DM74AS240WM
DM74AS240N
DM74AS244WM
DM74AS244N
Package Number
M20B
N20A
M20B
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs
Output
G
L
L
H
A
L
H
X
Y
H
L
Z
Inputs
Output
G
L
L
H
A
L
H
X
Y
L
H
Z
相關PDF資料 |
PDF描述 |
|---|---|
| DM74AS244WM | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| DM74AS240WMX | Dual 4-Bit Inverting Buffer/Driver |
| DM74AS245N | Octal Bus Transceiver with 3-STATE Outputs |
| DM74AS245SJ | Octal Bus Transceiver with 3-STATE Outputs |
| DM74AS245WM | Octal Bus Transceiver with 3-STATE Outputs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DM74AS244N_Q | 功能描述:緩沖器和線路驅動器 Oct 3-STATE Driver RoHS:否 制造商:Micrel 輸入線路數量:1 輸出線路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DM74AS244SJ | 功能描述:緩沖器和線路驅動器 Bus Driver/Receiver 3State RoHS:否 制造商:Micrel 輸入線路數量:1 輸出線路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DM74AS244SJ_Q | 功能描述:緩沖器和線路驅動器 Bus Driver/Receiver 3State RoHS:否 制造商:Micrel 輸入線路數量:1 輸出線路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DM74AS244SJX | 功能描述:緩沖器和線路驅動器 Bus Driver/Receiver 3State RoHS:否 制造商:Micrel 輸入線路數量:1 輸出線路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DM74AS244WM | 功能描述:緩沖器和線路驅動器 Oct 3-STATE Driver RoHS:否 制造商:Micrel 輸入線路數量:1 輸出線路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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