SN74ACT240_101 Datasheet, PDF (1/17 Pages) Texas Instruments – OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

D 4.5-V to 5.5-V V_CC Operation
D Inputs Accept Voltages to 5.5 V
SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515C – JUNE 1995 – REVISED OCTOBER 2002
D Max t_pd of 8.5 ns at 5 V
D Inputs Are TTL Compatible
SN54ACT240 . . . J OR W PACKAGE
SN74ACT240 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54ACT240 . . . FK PACKAGE
(TOP VIEW)
1OE ₁
1A1 ₂
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 9
GND 10
20 ^V_CC
19 ^2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
3 2 1 20 19
1A2 4
18 1Y1
2Y3 5
17 2A4
1A3 6
16 1Y2
2Y2 7
15 2A3
1A4 ⁸
14 _1Y3
9 10 11 12 13
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
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube
SN74ACT240N
SN74ACT240N
–40°C to 85°C
SOIC – DW
SOP – NS
Tube
Tape and reel
Tape and reel
SN74ACT240DW
SN74ACT240DWR
SN74ACT240NSR
ACT240
ACT240
SSOP – DB
Tape and reel SN74ACT240DBR
AD240
TSSOP – PW
Tape and reel SN74ACT240PWR
AD240
CDIP – J
Tube
SNJ54ACT240J
SNJ54ACT240J
–55°C to 125°C CFP – W
Tube
SNJ54ACT240W
SNJ54ACT240W
LCCC – FK
Tube
SNJ54ACT240FK
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.
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
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.
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