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參數(shù)資料
| 型號(hào)： | SN54F244FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 32Kx8 Nonvolatile SRAM, 10% Voltage Tolerance 28-DIP MODULE 0 to 70 |
| 中文描述： | 八路緩沖器/ 3司機(jī)態(tài)輸出 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 497K |
| 代理商： | SN54F244FK |
SN54F244, SN74F244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDFS063A – D2932, MARCH 1987 – REVISED OCTOBER 1993
Copyright
1993, Texas Instruments Incorporated
2–1
POST 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
transmitters. Taken together with the
′
F240 and
′
F241, these devices provide the choice of
selected
combinations
noninverting outputs, symmetrical OE (active-low
output-enable) inputs, and complementary OE
and OE inputs.
receivers
and
of
inverting
and
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
Y
OE
L
A
H
H
L
L
L
H
X
Z
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)
2
1
1
1
2
2
2
G
2
V
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.
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| SN54F245FK | 128Kx8 Nonvolatile SRAM, 5% Voltage Tolerance 32-DIP MODULE 0 to 70 |
| SN74F245DB | Switch-mode NiCd/NiMH Battery Charger w/Negative dV, Peak Voltage Detection, dT/dt Termination 16-PDIP -20 to 70 |
| SN54F299FK | 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH 3-STATE OUTPUTS |
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