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參數(shù)資料
| 型號： | 74F2240 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Octal Buffer/Line Driver with 25W Series Resistors in the Outputs |
| 中文描述： | 八路緩沖器/線與25W系列電阻的輸出驅(qū)動 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大小： | 96K |
| 代理商： | 74F2240 |
Philips Semiconductors
Product specification
74F2240, 74F2241
Octal buffers
2
December 13, 1990
853-1524 01255
FEATURES
Octal bus interface
30
output termination ideal for driving DRAM
15mA source current
DESCRIPTION
The 74F2240 and 74F2241 are octal buffers that are ideal for
driving dynamic DRAM with impedance matching. The outputs are
all capable of sinking 5mA and sourcing up to 15mA. The device
features two output enables, each controlling four of the 3-state
outputs.
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F2240
4.3ns
37mA
74F2241
4.5ns
30mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
N74F2240N, N74F2241N
PKG DWG #
20-pin plastic DIP
SOT146-1
20-pin plastic SOL
N74F2240D, N74F2241D
SOT163-1
INPUT AND OUTPUT LOADING
AND FAN-OUT TABLE
PINS
DESCRIPTION
74F (U.L.)
HIGH/LOW
LOAD
VALUE
HIGH/LOW
20
μ
A/0.2mA
Ian, Ibn
Data inputs
1.0/0.33
OEa, OEb
Output enable inputs
(active Low)
1.0/0.33
20
μ
A/0.2mA
OEb
Output enable input
(74F2241)
1.0/0.33
20
μ
A/0.2mA
Yan, Ybn
Data outputs (74F2241)
750/8.33
15mA/5mA
Yan, Ybn
NOTE:
One (1.0) FAST unit load is defined as: 20
μ
A in the High
state and 0.6mA in the Low state.
Data outputs (74F2240)
750/8.33
15mA/5mA
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 V
CC
OEa
Ia0
Yb0
Ia1
Yb1
Ia2
Yb2
Ia3
Yb3
GND
OEb
Ya0
Ib0
Ya1
Ib1
Ya2
Ib2
Ya3
Ib3
74F2240
SF00561
LOGIC SYMBOL
OEa
OEb
1
19
V
= Pin 20
GND = Pin 10
2
4
6
8
17 15 13
11
Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3
18 16 14 12
3
5
7
9
Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3
74F2240
SF00562
IEC/IEEE SYMBOL
2
4
6
8
17
15
13
11
1
19
2D
18
16
14
12
3
5
7
9
EN1
EN2
1
2
74F2240
SF00563
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F2240QC | Octal Buffer/Line Driver with 25W Series Resistors in the Outputs |
| 74F2240QCX | Dual 4-Bit Inverting Buffer/Driver |
| 74F2240SCX | Dual 4-Bit Inverting Buffer/Driver |
| 74F2244 | Octal buffer with 30ohm equivalent output termination 3-State |
| 74F2244 | Octal Buffer/Line Driver with 25X Series Resistors in Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F2240 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F2240QC | 功能描述:緩沖器和線路驅(qū)動器 Octal Buf/Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74F2240QCX | 功能描述:緩沖器和線路驅(qū)動器 Octal Buf/Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74F2240SC | 功能描述:緩沖器和線路驅(qū)動器 Octal Buf/Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74F2240SCX | 功能描述:緩沖器和線路驅(qū)動器 Octal Buf/Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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