Texas Instruments SN74BCT2244DW, SN74BCT2244DWR, SN74BCT2244N, SNJ54BCT2244FK, SNJ54BCT2244J Datasheet
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SN54BCT2244, SN74BCT2244
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS017C – SEPTEMBER 1988 – REVISED NOVEMBER 1993
• State-of-the-Art BiCMOS Design
Significantly Reduces I
CCZ
• Output Ports Have Equivalent 33-Ω Series
Resistors, So No External Resistors Are
Required
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W),
andStandard Plastic and Ceramic 300-mil
DIPs (J, N)
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 ′BCT2240
and SN74BCT2241, these devices provide the
choice of selected combinations of inverting and
noninverting outputs, symmetrical active-low
output-enable (OE
OE and OE inputs. These devices feature high
fan-out and improved fan-in.
The outputs, which are designed to source or sink
up to 12 mA, include 33-Ω series resistors to
reduce overshoot and undershoot.
) inputs, and complementary
SN54BCT2244 ...J OR W PACKAGE
SN74BCT2244 . . . DW OR N PACKAGE
SN54BCT2244 . . . FK PACKAGE
1A2
2Y3
1A3
2Y2
1A4
(TOP VIEW)
1OE
1
1A1
2
2Y4
3
1A2
4
2Y3
5
1A3
6
2Y2
7
1A4
8
2Y1
9
GND
10
(TOP VIEW)
2Y4
3212019
4
5
6
7
8
910111213
2Y1
1A1
GND
20
19
18
17
16
15
14
13
12
11
1OE
V
2A1
CC
1Y4
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
18
17
16
15
14
2A2 2OE
1Y1
2A4
1Y2
2A3
1Y3
The SN54BCT2244 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74BCT2244 is characterized for
operation from 0°C to 70°C.
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.
FUNCTION TABLE
(each buffer)
INPUTS
OE
L H H
L LL
H X Z
OUTPUT
A
Y
Copyright 1993, Texas Instruments Incorporated
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
2–1
SN54BCT2244, SN74BCT2244
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS017C – SEPTEMBER 1988 – REVISED NOVEMBER 1993
1
2
4
6
8
19
11
13
15
17
†
EN
1
EN
1
logic symbol
1OE
1A1
1A2
1A3
1A4
2OE
2A1
2A2
2A3
2A4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
18
16
14
12
logic diagram (positive logic)
1A1
1A2
1A3
1A4
2A1
2A2
1
2
4
6
8
19
11
13
18
16
14
12
1Y1
1Y2
1Y3
1Y4
9
2Y1
7
2Y2
1OE
1Y1
1Y2
1Y3
1Y4
9
2Y1
7
2Y2
5
2Y3
3
2Y4
2OE
schematic of Y outputs
15
2A3
17 3
2A4
V
CC
Output
5
2Y3
2Y4
2–2
GND
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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