参数资料
型号: SN74F240DN
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: F/FAST SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDIP20
封装: PLASTIC, DIP-20
文件页数: 1/5页
文件大小: 72K
代理商: SN74F240DN
SN54F240, SN74F240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDFS061A – 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
receivers
and
transmitters. Taken together with the
′F241 and
′F244, 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
′F240 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 SN74F240 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 SN54F240 is characterized for operation over
the full military temperature range of – 55
°C to
125
°C. The SN74F240 is characterized for
operation from 0
°C to 70°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
OE
A
Y
L
H
L
LH
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
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54F240 ...J PACKAGE
SN74F240 . . . DB, DW, OR N PACKAGE
(TOP VIEW)
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54F240 . . . 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PDF资料
PDF描述
SN74F245N-10 F/FAST SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20
SN74F286DR F/FAST SERIES, 9-BIT PARITY GENERATOR/CHECKER, TRUE OUTPUT, PDSO14
SN74F381N-10 F/FAST SERIES, 4-BIT ARITHMETIC LOGIC UNIT, PDIP20
SN74F564DW-00 F/FAST SERIES, 8-BIT DRIVER, INVERTED OUTPUT, PDSO20
SN54F564FK-00 F/FAST SERIES, 8-BIT DRIVER, INVERTED OUTPUT, CQCC20
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