74AC11240 Datasheet, PDF (1/6 Pages) Texas Instruments – OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS

74AC11240
OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCAS448A – MAY 1987 – REVISED APRIL 1996
D Flow-Through Architecture Optimizes
PCB Layout
D Center-Pin V_CC and GND Configurations
Minimize High-Speed Switching Noise
D EPICt (Enhanced-Performance Implanted
CMOS) 1-mm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, and Standard
Plastic 300-mil DIPs (NT)
description
DB, DW, OR NT PACKAGE
(TOP VIEW)
1Y1 1
1Y2 2
1Y3 ³
1Y4 ⁴
GND ⁵
GND ⁶
GND ⁷
GND ⁸
2Y1 ⁹
2Y2 ¹⁰
2Y3 ¹¹
2Y4 ¹²
24 1OE
23 1A1
22 _1A2
21 _1A3
20 _1A4
19 _VCC
18 _VCC
17 _2A1
16 _2A2
15 _2A3
14 _2A4
13 _2OE
This octal buffer/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 74AC11240 is organized as two 4-bit buffers/line drivers with separate 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.
The 74AC11240 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each buffer)
INPUTS
OE
A
OUTPUT
Y
L
H
L
L
L
H
H
X
Z
logic symbol^†
24
1OE
23
1A1
22
1A2
21
1A3
20
1A4
EN
1
1
1Y1
2
1Y2
3
1Y3
4
1Y4
13
2OE
17
2A1
16
2A2
15
2A3
14
2A4
† _{This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.}
EN
1
9
2Y1
10
2Y2
11
2Y3
12
2Y4
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.
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.
Copyright © 1996, Texas Instruments Incorporated
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