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參數(shù)資料
| 型號(hào)： | 74F240 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Octal Buffers/Line Drivers with TRI-STATE Outputs |
| 中文描述： | 八路緩沖器/線路驅(qū)動(dòng)器，三態(tài)輸出 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 103K |
| 代理商： | 74F240 |
Philips Semiconductors
Product specification
74F240/74F240A/
74F241/74F241A
Buffers
2
January 2, 1991
853–0355 01345
FEATURES
Octal bus interface
3-State buffer outputs sink 64mA
15mA source current
Guaranteed output skew less than 2.0ns
(74F240A/74F241A)
Reduced ground bounce (74F240A/74F241A)
Reduced I
CC
(74F241A only)
Reduced loading (74F240A I
IL
= 100
μ
A,
74F241A I
IL
= 40
μ
A)
DESCRIPTION
The 74F240 and 74F241 are octal buffers that are ideal for
driving bus lines of buffer memory address registers. The
outputs are all capable of sinking 64mA and sourcing up to
15mA. The device features two output enables, each
controlling four of the 3–state outputs.
The 74F240A and 74F241A are functionally equivalent to
their non–A counterparts. They have been designed to
reduce effects of ground noise. Other advantages are noted
in the features.
TYPE
TYPICAL PROPAGATION DELAY
TYPICAL SUPPLY CURRENT (TOTAL)
74F240
4.3ns
37mA
74F240A
3.8ns
40mA
74F241
5.0ns
53mA
74F241A
4.5ns
32mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%, T
amb
= 0
°
C to +70
°
C
N74F240N, N74F240AN, N74F241N, N74F241AN
PKG DWG #
20–pin plastic DIP
SOT146-1
20–pin plastic SOL
N74F240D, N74F240AD, N74F241D, N74F241AD
SOT163-1
20-pin plastic SSOP II
N74F240DB
SOT339-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
20
μ
A/1.0mA
Data inputs (74F240)
1.0/1.67
Ian, Ibn
Data inputs (74F240A)
1.0/0.167
20
μ
A/100
μ
A
20
μ
A/1.6mA
20
μ
A/40
μ
A
Data inputs (74F241)
1.0/2.67
Data inputs (74F241A)
1.0/0.067
OEa, OEb
Output enable inputs (active low) (74F240)
1.0/0.33
20
μ
A/0.2mA
20
μ
A/100
μ
A
20
μ
A/1.0mA
20
μ
A/40
μ
A
Output enable inputs (active low) (74F240A)
1.0/0.167
OEa, OEb
Output enable input (74F241)
1.0/1.67
Output enable input (74F241A)
1.0/0.067
Yan, Ybn
Data outputs (74F241, 74F241A)
750/106.7
15mA/64mA
Yan, Ybn
Data outputs (74F240, 74F240A)
750/106.7
15mA/64mA
Note to input and output loading and fan out table
One (1.0) FAST unit load is defined as: 20
μ
A in the high state and 0.6mA in the low state.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F240PC | Octal Buffers/Line Drivers with TRI-STATE Outputs |
| 74F240SC | Octal Buffers/Line Drivers with TRI-STATE Outputs |
| 74F240SJ | Octal Buffers/Line Drivers with TRI-STATE Outputs |
| 74F240 | Octal Buffers/Line Drivers with 3-STATE Outputs |
| 74F240PC | Octal Buffers/Line Drivers with 3-STATE Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F240_04 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Buffers/Line Drivers with 3-STATE Outputs |
| 74F240A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal inverter buffer 3-State |
| 74F240AD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Inverting Buffer/Driver |
| 74F240AN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Inverting Buffer/Driver |
| 74F240D | 制造商:NXP Semiconductors 功能描述: 制造商:North American Philips Discrete Products Div 功能描述:Driver/Buffer Device, Dual, 4-Bit, 20 Pin, Plastic, SOP 制造商:NXP Semiconductors 功能描述:Driver/Buffer Device, Dual, 4-Bit, 20 Pin, Plastic, SOP |
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