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器件描述：OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
器件厂商：TI [Texas Instruments]
厂商主页：http://www.ti.com/
文件大小：497.58KB
文件页数：14
PDF阅读：54F244.pdf (点击阅读器件资料)
摘要：
SN54F244, SN74F244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDFS063A – D2932, MARCH 1987 – REVISED OCTOBER 1993
Copyright ? 1993, Texas Instruments Incorporated
2–1POST OFFICE BOX 655303 ? DALLAS, TEXAS 75265
? 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
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.
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.
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
OE A
Y
L H H
L LL
HXZ
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54F244 ...J PACKAGE
SN74F244 . . . DB, DW, OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54F244 . . . FK PACKAGE
(TOP VIEW)
2Y4 1A1 1OE
1Y4 2A2
2OE
2Y1
GND
2A1
V
CC
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.
相关器件：JM38510/33203B2A JM38510/33203BRA JM38510/33203BSA SN54F244 SN54F244FK SN54F244J SN74F244 SN74F244DB SN74F244DBR SN74F244DBLE SN74F244DW SN74F244DWR SN74F244DBRE4 SN74F244N SN74F244DWG4 SN74F244DWRG4 SN74F244NSRE4 SN74F244N3 SN74F244NE4 SN74F244NSR SNJ54F244J SNJ54F244FK SNJ54F244W 5962-9758601QRA 5962-9758601QSA 5962-9758601Q2A
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