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參數(shù)資料
| 型號： | 74F244SCX |
| 英文描述： | Dual 4-Bit Non-Inverting Buffer/Driver |
| 中文描述： | 雙4位非反向緩沖器/驅(qū)動器 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 147K |
| 代理商： | 74F244SCX |
Philips Semiconductors
Product specification
74F240/74F240A/
74F241/74F241A
Buffers
2
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.
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F244SJX | Dual 4-Bit Non-Inverting Buffer/Driver |
| 74F245DC | Single 8-bit Bus Transceiver |
| 74F245MSAX | Single 8-bit Bus Transceiver |
| 74F245MTCX | Single 8-bit Bus Transceiver |
| 74F245SCX | Single 8-bit Bus Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F244SCX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74F244SJ | 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 |
| 74F244SJ_Q | 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 |
| 74F244SJX | 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 |
| 74F245 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Bidirectional Transceiver with 3-STATE Outputs |
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