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SN74ACT240DBRE4 参数 Datasheet PDF下载

SN74ACT240DBRE4图片预览
型号: SN74ACT240DBRE4
PDF下载: 下载PDF文件 查看货源
内容描述: 八路缓冲器/驱动器,具有三态输出 [OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS]
分类和应用: 总线驱动器总线收发器逻辑集成电路光电二极管输出元件
文件页数/大小: 17 页 / 692 K
品牌: TI [ TEXAS INSTRUMENTS ]
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SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515C – JUNE 1995 – REVISED OCTOBER 2002
D
D
4.5-V to 5.5-V V
CC
Operation
Inputs Accept Voltages to 5.5 V
SN54ACT240 . . . J OR W PACKAGE
SN74ACT240 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
D
D
Max t
pd
of 8.5 ns at 5 V
Inputs Are TTL Compatible
SN54ACT240 . . . FK PACKAGE
(TOP VIEW)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
2Y4
1A1
1OE
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
description/ordering information
These octal buffers and line drivers are designed specifically to improve the performance and density of 3-state
memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
The ’ACT240 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When
OE is low, the device passes inverted data from the A inputs to the Y outputs. When OE is high, the outputs are
in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
TA
PDIP – N
SOIC – DW
–40°C to 85°C
40°C
SOP – NS
SSOP – DB
TSSOP – PW
CDIP – J
–55°C to 125°C
CFP – W
LCCC – FK
PACKAGE†
Tube
Tube
Tape and reel
Tape and reel
Tape and reel
Tape and reel
Tube
Tube
Tube
ORDERABLE
PART NUMBER
SN74ACT240N
SN74ACT240DW
SN74ACT240DWR
SN74ACT240NSR
SN74ACT240DBR
SN74ACT240PWR
SNJ54ACT240J
SNJ54ACT240W
SNJ54ACT240FK
TOP-SIDE
MARKING
SN74ACT240N
ACT240
ACT240
AD240
AD240
SNJ54ACT240J
SNJ54ACT240W
SNJ54ACT240FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
2Y1
GND
2A1
1Y4
2A2
1