74ACT11240
OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS

SCAS210A – MAY 1987 – REVISED APRIL 1996
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Inputs Are TTL-Voltage Compatible
C0068 Flow-Through Architecture Optimizes
PCB Layout
C0068 Center-Pin V
CC
and GND Configurations
Minimize High-Speed Switching Noise
C0068 EPICC0116 (Enhanced-Performance Implanted
CMOS) 1-C0109m Process
C0068 500-mA Typical Latch-Up Immunity at
125°C
C0068 Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, and Standard
Plastic 300-mil DIPs (NT)

description
This octal buffer or line driver is designed specifically to improve both the performance and density of 3-state
memory address drivers, clock drivers, and bus-oriented receivers and transmitters. This device provides
inverting outputs and symmetrical active-low output-enable (OE) inputs. This device features high fan-out and
improved fan-in.
The 74ACT11240 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
OE A
Y
L H L
L LH
H X Z
logic symbol
†
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
2A4
2A3
2A2
2A1
2OE
1A4
1A3
1A2
1A1
1OE
2Y4
2Y3
2Y2
2Y1
1Y4
1Y3
1Y2
1Y1
12
11
10
9
4
3
2
1
14
15
16
17
13
EN
20
21
22
23
24
EN
1 1
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.

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.
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
1Y1
1Y2
1Y3
1Y4
GND
GND
GND
GND
2Y1
2Y2
2Y3
2Y4
1OE
1A1
1A2
1A3
1A4
V
CC
V
CC
2A1
2A2
2A3
2A4
2OE
DB, DW, OR NT PACKAGE
(TOP VIEW)