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ꢉ ꢊꢋꢌꢍꢇꢎ ꢏꢄ ꢄꢐ ꢑꢀꢒ ꢓꢑ ꢔ ꢕꢐ ꢑ
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SDFS063A − D2932, MARCH 1987 − REVISED OCTOBER 1993
SN54F244 . . . J PACKAGE
SN74F244 . . . DB, DW, OR N PACKAGE
(TOP VIEW)
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• Package Options Include Plastic
Small-Outline (SOIC) and Shrink
Small-Outline (SSOP) Packages, Ceramic
Chip Carriers, and Plastic and Ceramic
DIPs
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 both the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and
transmitters. Taken together with the ′F240 and
′F241, these devices provide the choice of
selected combinations of inverting and
noninverting outputs, symmetrical OE (active-low
output-enable) inputs, and complementary OE
and OE inputs.
13 2A2
12 1Y4
11
2A1
SN54F244 . . . FK PACKAGE
(TOP VIEW)
3
2
1
20 19
18
The ′F244 is organized as two 4-bit buffers/line
drivers with separate output enable (OE) inputs.
When OE is low, the device passes data from the
A inputs to the Y outputs. When OE is high, the
outputs are in the high-impedance state.
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
4
5
6
7
8
17
16
15
14
9 10 11 12 13
The SN74F244 is available in TI’s shrink
small-outline package (DB), which provides the
same I/O pin count and functionality of standard
small-outline packages in less than half the
printed-circuit-board area.
The SN54F244 is characterized for operation over
the full military temperature range of −55°C to
125°C. The SN74F244 is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
H
L
OE
A
H
L
L
L
H
X
Z
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Copyright 1993, Texas Instruments Incorporated
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ꢢ ꢦ ꢣ ꢢꢛ ꢜꢰ ꢞꢝ ꢡ ꢩꢩ ꢧꢡ ꢟ ꢡ ꢠ ꢦ ꢢ ꢦ ꢟ ꢣ ꢫ
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2−1
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