SN54AC240, SN74AC240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS512C – JUNE 1995 – REVISED SEPTEMBER 1996
SN54AC240 . . . J OR W PACKAGE
SN74AC240 . . . DB, DW, N, OR PW PACKAGE
(TOP VIEW)
EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), Thin Shrink Small-Outline (PW), and
DIP (N) Packages, Ceramic Chip Carriers
(FK), Flat (W), and DIP (J) Packages
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
2OE
1Y1
2A4
1Y2
2A3
1Y3
description
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.
13 2A2
12
11
1Y4
2A1
The ’AC240 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.
SN54AC240 . . . FK PACKAGE
(TOP VIEW)
3
2
1
20 19
18
4
5
6
7
8
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
17
16
15
14
The SN54AC240 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74AC240 is characterized for
operation from –40°C to 85°C.
9 10 11 12 13
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
OE
A
H
L
L
L
L
H
Z
H
X
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.
EPIC is a trademark of Texas Instruments Incorporated.
Copyright 1996, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265