74AC11244_15 Datasheet, PDF (1/14 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

D EPIC™ (Enhanced-Performance Implanted
CMOS ) 1-µm Process
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D Flow-Through Architecture Optimizes PCB
Layout
D Center-Pin V_CC and GND Pin
Configurations Minimize High-Speed
Switching Noise
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, and Standard Plastic DIPs (NT)
74AC11244
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS171B – MARCH 1987 – REVISED SEPTEMBER 1998
DB, DW, NT, OR PW 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 V_CC
18 V_CC
17 2A1
16 2A2
15 2A3
14 2A4
13 2OE
description
The 74AC11244 is an octal buffer or line driver designed specifically to improve both the performance and
density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The
device can be used as two 4-bit buffers or one 8-bit buffer, with active-low output-enable (OE) inputs.
When OE is low, the device passes noninverted 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.
The 74AC11244 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each driver)
INPUTS
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
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 © 1998, Texas Instruments Incorporated
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